CA1262092A

CA1262092A - Hydrated adhesive gel and method for preparing the same

Info

Publication number: CA1262092A
Application number: CA000503559A
Authority: CA
Inventors: Hiroshi Doi; Masanori Inoue
Original assignee: Nippon Oil and Fats Co Ltd
Current assignee: NOF Corp
Priority date: 1985-03-09
Filing date: 1986-03-07
Publication date: 1989-10-03
Also published as: AU5429186A; CN86102388A; EP0194807A3; CN1022022C; AU576946B2; US4839345A; DE3674815D1; EP0194807B1; EP0194807A2; KR860006986A; KR900004316B1

Abstract

HYDRATED ADHESIVE GEL AND
METHOD FOR PREPARING THE SAME

Abstract of the Disclosure This invention relates to a hydrated adhesive gel using a product which is obtained by reacting an aqueous solution essentially containing protein having amino groups at the side chains thereof, a gelling retarder, and a hydrophilic tackifier with a certain N-hydroxyimidoester compound.

Description

~262~2 60-~5,765 comb.

HYDRATED A~HESIVE GEL .~ND
METHOD FO~ PREPARING THE SAME

This invention relates -to hydrated adhesive gel, especially hydrated adhesi-ve gels for autohesion cataplasma and pack agents having sheet shape.
Hitherto, in order -to remove inflammation of 05 muscles caused by a bruise, a sprain, etc., swelling, fever, etc., and alleviate a pain of muscles, etc., it is conducted to treat the effected part by a cold or hot compress.
In this case, stable moisture retention and viscoelasticity of the using cataplasma are required without decreasing of water content in the hydrated adhesive gel such as ointments and plasters by bodily temperature, losing the adhesiveness for the sake of drying, and occurring phenomena of droop and surface tackiness due to moisture absorption and softening caused by sweating.
It is required that the hydrated adhesive gel i-tself has a sufficient adhesion, and a -fixed means such as adhesion sheet is not required in order to protect against slipping of the cataplasma caused by bending and s-tretching of an applied part of the cataplasma.
Such an autohesion cataplasma is disclosed, for example, in the Japanese Patent Laid-open No. 58-21,613, .
.

. -~ 2 ~ 2~ ~

and obtaiend by blending acrylic ester copolymer emulsion with a base con-taining polyvinyl pyrrolidone which is crosslinked by methylvinyl ether/maleic anhydride copolymer to provide autohesion.
05 Further, according to the invention disclosed in the Japanese Paten-t Laid-open No. 59-13,718, a compress agent having good adhesibility were obtainecl by adcling dialdehyde starch into an aqueous acid sol-u-tion of gelatin and polyacrylic acid, and adding a metallic salt or a rnetallic o~ide thereto.
Moreover, in order to give an ef~ect o~
beauty trea-tment by removing dirt or keratin, and osmosing beauty ingredients such as vitamin or hormone, etc. into -the skin, o/w type emulsion of aqueous 1S high-molecular compound such as polyvinyl alcohol or gelatinous ~ilm ~orming ingredients are commercialLy available as the pack agents. These agents are able to give an ef~ect of beauty treatment by taking out a necessary amount ~rom a vessel such as a tube, etc.
prior to use, applied it to the face skin, etc. to ~orm a ilm, and peeling o~-f the ~ilm or washing the face a~ter drying.
These pack agen-ts require to dry long time, and need to rapidly peel when a visitor suddenly comes not to see the strange ~ace. ~t is difficult to apply uniform the hydrated a~hesive ge~L such as ointments or plasters on the skin, when the dry film is stript off, it tends to be torn. There are clisadvantages such as ~ L~262gll92 that ingredients for the beauty skin can not be uniformly provided because of the ununiformity of thickness.
In order to improve these disadvantages, a sheet pack agent which is produced by adding a crosslinking agent 05 such as calcium chloride into an aqueous solu-tion of polyacrylic acid -to form hydrous sheet gel, and applied on the skin of face, etc. is known by the Japanese Patent Laid-open No. 58-180,408.
However, the said invention of the Japanese lo Patent Laid-open No. 58-21,613 concerning to the autohesion cataplasma comprises only blending acrylic ester copolymer emulsion as an adhesive into a base or crosslinked polyvinyl pyrrolidone. As the resul-t 3 it has disadvantages that the strength of the adhesion is ~ 15 limited because there is no chemical bonding between ; the base and the adhesive, and the adhesion lowers with time.
Fur-ther, the autohesion cataplasma disclosed in the Japanese Patent Laid-open No. 59~13,7~8 has good early adhesion. However, with the evaporation of the water con-tent, the adhesion lowers, and especially there are disadvantages that the a~hesion is little shown in case of reapplyi-ng the agents on the skin once the agents are peeled of-f.
Moreover, as the sheet pack agent, the said method (the Japanese Patent Laid-open No. 58-180,~08) uses crosslinking hydrous gel obtained by adding a crosslinking agent into an aqueous solution of ;
_ ~ _ : .
,: ~ :" ''' ':' ' :
.: .........
- ,.

~ 2 ~ 2 polyacrylic acid an~/or a pol~acrylate. In this case~
as the crosslinking agen-t, metal salts such as calcium chloride, magnesium chloride, e-tc., compounds having a~
least 2 epoxy groups in a molecular such as polyethylene 05 glycol diglycidyl ether, glycerine diglycidyl ether, etc.
are given.
However, when the said compounds are used as a crosslinking agent, the early aclhesion of the obtained cataplasma is good, but the adhesion is remarkably lowered when the sheet is reapplied on the skin af-ter the sheet is peeled off 1ike as the case of the said autohesion cataplasma described in the Japanese Patent Laid-open No. 59-13,71~.
When the latter or compounds having at leas-t

2 epoxy groups in a molecular are used, the reaction between these crosslinking agent an aqueous solution of polyacrylic acid and/or a polyacrylate is very slow.
Therefore, there are some faults~ for e~ample, the reaction needs high temperatures, e.g. 90C, so that the beauty skin ingredients such as vitamins, etc.
which are decomposable require to absorb into the sheet hydrous gel in particular after the formation of -the gel.
These inventors have investigated ~or dissolving the above disadvantages, and found that reaction products by adding an aqueous solution of an N-hydro~yimidoester compound in-to an aqueous solution of gelatin which contains a protein having amino groups " ' , ., .............. ~

~ 2 a~ ~he sicle groups thereoE and a gelling retarder such as calcium chloride, urea, etc., and par-tially briclging the protein, have very strong adhesion in wet stage.
~ urther, these inventors -found that hy subs-tituting a part of wa-ter in hydrated adhesive gel such as an ointmen-t or plaster for a hydrophilic tackifier such as glycerol, ethylene glycol, or polypropylene glycol which is liquid at ordinary temperature, it is able to protect from reducing adhesibility of said hydrated adhesive gel even if water content decreased during the use of an aqueous adhesive gel.
An object of the present invention is to provide a hydrated adhesive gel using a product which is obtained by reacting an aqueous solu-tion essentially containing protein having amino groups at the side chains thereof, and an N-hydroxyimidoester compound represented by the following ormula (1).

x ~ )m~Y~N\ ~

wherein X is a residue of a compound having 2 to 6 of carbons and 2 to 6 of hydroxyl groups, A is one or more groups selected from oxyethylene, oxypropylene, ancl ; . . :" : ~ , . - .
~ ' ,, .
,,.

~æ~o~%
o~ybutylene groups, Y is a residue of dibasic acid, Z is ~ a groupf of (2) C ~ OEl substituent, \C~
H

CH CH and its partial a groupf of (3) CH CH substituent, / \C/

/c CH C~2 and its partial a groupf of (4) C substituent, ~I2 ~CH and its partial a groupf oi (5) ~CH slibstituent, ~CH2 and its partial : ~ a groupf of (6) ,CH2 substituent, , . . .

. . .
,' ' ..., ,, ' .
., :

~L2~
~C~I2 ~nd its partial a group of (7) lH2 sllbs-ti-tuent, ,CH2 CH
and its partial a group of (8) CH subs-tituen~, m is 1-3000 n is 2-6.
Another object of the present invention is to provide a hydrated adhesive gel using a product which is obtained by reacting an aqueous solution essentially consisting of a protein having amino groups at the side chains thereof, a gelling retarder, and a hydrophilic tackifier with an N-hydroxyimidoester compound repre-sented by the following formula (1).

\ / ~ n ~ . ( 1 ) I

wherein X is a residue of a compound having 2 to 6 of carbons and 2 to 6 of hydroxyl groups, A is one -to three groups selected from oxyethylene, oxypropylene, and oxybutylene groups, : :

~ 9 Y is a residue of dibasic acid, Z is \ / ~
a groupf of (2) C CH substituen-t, ~1 C
CH CH and its partial a group-f of (3~ 1H CH swbstituent, /\ /

\/\
CH CH2 and its partial ~ a groupf of (4) 1H 1H2 SUbStitUent, /\C~

~CH and its partial a groupf of (5)~1H substituent, CH2 and its partial a groupf of (6)~l~l2 substituent, : ' ':

~2~9~
~CH2 I and its partial a group of (7) l~12 substi-tuent, ~CH2 ~CH
Il and its partial a group of (~) CH substituellt, ,CH2 m is 1-3000 n is 2-6.
N-hydroxyimidoester compounds (abbreviated as compo~nds of general formula (1)) represen-ted by the following formula (1) used in this invention are as follows.

X ~-(A~m-Y-N\ Z ~ -- (1) O

~herein X is an alcohol residue produced from a compound having 2 -to 6 of carbons and 2 to 6 of hydroxyl groups such as ethylene glycol, propylene glycol, ~lycerol, diglycerol, -trimethylolethane, trimethylolpropane, erythritol, pentaerythritol, sorbitol, mannitol, glucose, mannose, xylose, sorbitan, etc., n is a value of 2~6 corresponding the number of hydroxyl groups.

' , ~6~92 A is a polymeriza-tion unit or a copolymeriza-tion unir selected from one kind or any combination of 2 to 3 kinds of hydroxyethylene, hydroxypropylene, and hyroxybutylene groups, m is an average additional mole os number thereof.
Y is a residue of dibasic acid such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, cork acid, azelaic ac:id, sebacic acid, nonane-dicarboxylic acid, decane-dicarboxylic o acid, undecane-dicarboxylic acid, iso succinic acid, methyl succinic acid, e-thyl malonic acid, dimethyl malonic acid, malic acid, tariric acid, maleic acid, fumaric acid, oxalacetic acid, tartaric acid, mesoxalic acid, acetondicarboxylic acid, citraconic acid, mesaconic acid, itaconic acid, phthalic acid, isophthalic acid, terephthalic acid, homophthalic acid, hexahydrophthalic acid, tetrahydrophthalic acid, dihydrophthalic acid, : o-phenylenediacetic acid, m-phenylenediacetic acid, p-phenylenediacetic acid, o-phenyleneacetic acid-~-propion acid, naphthalene-2,3-dicarboxylic acid, naphthalene~l,2-dicarboxylic acid, naph-thalene-1,8-dicarboxylic acid, diphenic acid, aspartic acid, glutamic acid, ~-ke-togl--ltaric acid, ~-oxyglutaric acid, etc.
Z includes a structure of an acicl imide other s-tructure than the said formula of (2)-(8~, as a partial substituent such as:
in the case of formula (2), - 1.1 -~ H ~ C
~/\ \/~
C CH C CH
Il l 11 1 C CH C C-C~
/ \ ~ \ OH
C C
C H
}10 ~ Q

in the case oE formula (4), C-CH3 ~ ~C-OH
~CH ,CH

in the case oE formula (5), ~CH(CH3) ~ ~ICHBr ,C}~2 ,CHBr `CH(OH) ~ ~CH(OH) ,CH2 ~CH(OH) in -the case of formula (6), CH2 ~ C}l(Nnl2) C(OH)-COOH CH2 ~CH2 ,CH2 I'he compounds of the general formula of (1~
consisting of the said each constitution react specifi-cally with amino groups, and produce addition products of amino groups with the release of imidoxyl groups, 50 tha-t the compounds act as crosslinking agents to the , protein having amino groups at the si.de chains of gelatin~ etc., as described below, and reacted by crosslinking reaction at ordinary temperatures in an aqueous solution to form good gels by transforming the pro-teins into macromolecular substances.

O O
Il o o o 0 11 CH2-C ~ ll il l~ C-CH2 I /N-O-C C~OCH2C}I2~OCH2CH20~CH2CH20-~C C-O-N\

Il c~l2-cN2 CH2-C~l2 O O

proteinl -Nl~l2 H2N- ~protein O O O O

protein ~ C C~OCH2CH2-~0CH2CH2-O~cE2cH20-)~c C-NH- ~protein o -~2HO-N<

o In this case, when X ls an alcohol residue produced from diol such as ethylene glycol, propylene glycol, etc., n is 2, the compound of general formula (1) becomes ~ 2 ~ 2~ ~
a bifunctional crosslinking agent, and relatively so-ft gel such as ointment is produced. When ~ is an alcohol residue produced :Erom polyol such as pentaerythritol, sorbitol, etc. 9 n is 4 or 6, -the compound of general 05 formula (1) becomes polyfunctional crosslinking agent.
In producing the gel by this compound, rigid gel having high crosslinking density is produced. When A is greater than 7, obtained gel does not show adhesion~
From the said reason, preferable range is 2-3.
lo Fwrther when A is an oxyethylene group, the hydrophilic nature of the compound of general ~ormula (l) is larger than that of an oxypropylene group. When A is a copolymer of oxyethylene and oxypropylene groups, the hydrophilic nature is varied by the ratio o~ both, so that it is able to control the degree o~ -the hydrophilic na-ture.
m is able to take a value ranging 1-3000, when m is lesser, the crosslinking density of the compo~md per unit weight of general formula (l) becomes higher.
Therefore, ~igid gel is able to get easily, and the hydroph:ilic nature o-f the compound of general formula (l) becomes too small. When m is over 3000, imidoester part of the compound of general formula (l) becomes too small, the compound is impractical because the function ~5 as the crosslinking agent is very small. Accordingly, the preferable range of m is 5-200.
More, dibasic acid in which Y is a residue is optionally selected because -the esterification easily ~ ~ ~2 ~ ~
occurs between o~yalkylene addition product of alcohol and acid imide.
As the acid imide, ph-thalimide that partial structure of Z is represented by general formula ~2) 05 and the partial substituent thereof, maleimide of general formula (S) and the partial substituent thereof, and succinimide of general formula (6) and -the partial substituent thereof are desirable because these compounds are easily produced industrially and cheap.
o Proteins having amino groups at the side chains thereof are, for example, gelatin, proteose, pepton, casein, albumin, globulin, prolamin 9 protamine, histone, glutelin, etc.
The gelling retarder used in this invention is a compound which re-tard the velocity for gradually varying aqueous solution of protein having amino groups at the side chains, such as gelatin dissolved by heating into the gel together with lowering of tempera-ture, and has an effect which allows to lower the gelling tempera-ture. The gelling retarder which is stable as an aqueoussolution includes~ ~or example, inorganic compounds containing chlorine such as, potassium chloricle, sodium chloride, calcium chloride, magnesium chloride, ammonium magnesium chloride, ammonium chloride, zinc chloride, ammonium zinc chloride, manganese chloride, barium chloride, nickel chloride, lithium chloride, cobalt chloride, aluminum chlorid, antimony pen~achloride, stannic chloride, s-tannous chloride, titanous chloride, , . .

~ 2~;2al~12 titanic chloride, Eerric chloride, ferrous chloride, cupric chloride, etc., inorganic compounds containing bromine such as potassium bromide, sodium bromide, calcium bromide, magnesium bromide, ammonium bromide, 05 zinc chloride, manganese bromide, barium bromide, nickel chloride, lithium bromide, aluminum bromide, stannous bromide, ferrous bromide, ferric bromide, cupric bromide etc., inorganic compounds containing a nitrate group such as potassium nitrate, sodium 0 nitrate, calcium nitrate, ammonium nitrate, zinc nitrate, barium nitrate, nickel nitra-te, aluminum nitrate, cobalt nitrate, magnesium nitrate, manganese nitra-te, lithium nitrate, ferrous nitrate, ferric ni-trate, silver nitrate, cupric nitrate, etc., inorganic compounds containing a thiocyana-te group such as potassium thiocyanate, sodium thiocyanate, calcium thiocyanate, ammonium thiocyanate, barium thiocyanate, ferric thiocyanate, etc., nonelectrolytes such as resorcinol, hydroquincne, pyrocatechol, pyrogallol, furfural, urea, ethylalcohol, ethylalcohol denatured with methylalcohol, isopropylalcohol, chlorobutylalcohol, erythritol, etc.
The compounding weight of the gelling retarder 0.05-5 times oE the compounding weigh~ of the protein having amino groups, preEerably 0.5-l.5 times.
If the hydrophilic tackifier used in -this :invention i5 dissolved in water and -the water evapora-tes during the use oE the hydrated adhesive gel, such as ointment or plaster, it remains in said hydrated ~ 6 ~ ~2 adhesive gel, such as the ointment or plaster and gives the adhesion properties -to the gel. The hydrophilic tackifier includes glycerol, ethylene glycol, propylene glycol, and polyethylene glycol and polypropylene 05 glycol which are liquid at ordinary tempera-tures 3 etc.
These tackifiers have a tackifier effect by themselves.
However, the effect is also represente~ by the combined use.
The blending weight of the hydrophilic lo tackifier used in the hydrated adhesive gel is ~-80 weigh-t % pré~erably 3-50 weight %.
When the hydrated adhesive gel of this inven-tion uses as a medicine for external wse, efficacious ingredients such as methyl salicylate, glycol salicylate, menthol, camphol, thymol 9 borneol, diphenhy~ramine, indomethacin, ketoprophen, bruphen, nitroglycerol, peppermint oil, hormones, vitamins, etc., humec-tants such as sorbitol, benzyl alcohol, etc., powder base such as kaolin, bentonite, zinc white, titanium, dioxide, etc., as desired, tackifier such as rosin, ester-gum, polybutene, etc., cationic, anionic and nonionic surface active agents, other water-soluble or hydrophilic synthe-tic high molecular compounds or natural high molecular compounds, etc. such as polyvinyl alcohol, carboxymethylcellulose, araic gum, polyvinylpyrrolidone, polyacrylic acid, pectin, etc.
Further, ~hen the hydra-ted adhesive gel such as ointmen~ or plaster of this inven-tion is used as . .

~ 2 ~ 2 a cosme~ic pack agent having sheet structure, it is possible to add nwtritive agents of the skin such as vitamins, hormones, amino acids, materials extracted or secreted from animal or plant tissues, e-tc., ingredients 05 for beautiful skin used in usual pack agents, for example, skin improvement agents, etc., such as bleaching agents, depilatory agents, etc., coloring agents such as titanium dioxide, red 2 for food, as desired, hydrophilic synthetic high molecular compounds or lo natural high molecular compounds, etc., such as polyacrylic acid polyvinyl pyrrolidone, pec-tin, etc.
The hydrated adhesive gel of this invention is aqueous gel that the base contains crosslinking protein. If once such hydrated adhesive gel is adhered on the sk:in, the adhesion on the skin is very strong, so that such gel is possible to reapplied after peeling off, as desired. Its tack reduc-tion is rarely found.
Further, the early tackiness does no-t lower with time, and the tackiness tends to increase with the evaporation of water content. It is possible to raise the water retention rate in said gel, and i-t is possible up to 70 weight % according to compositions. When the hydrated adhesive gel of this invention having such good properties is used as the cataplasma, the said gel has good shape reten-tion, moist-ure re-tention, a~hesion to the skin, maintenance of cold feeling. Especially, the agents have good adhesion to the skin. There is no deviation or release of applied parts by bodily exercise.

.:

~2 ~ 2 Moreover, when said adhesive gel is reapplied after releasing, the adhesion is good. The lowering of adhesion by sweating is very 1ittle. Even if the ointment is used for a long time releasing of the 05 cataplasma is very difficult because the adhesion is not lowered by the evapora-tion of water content. When the cataplasma is released after using, there is not a pain in comparison with the conventional cataplasma using adhesion sheets. There is no poisoning of the lo skin compared with using the adhesion sheets.
When the ointment of this invention is used as a sheet pack agent for beauty effects of -the skin, especially for the face skin, disadvantages of conven-tional jellied pack agents, namely~ long drying time, impossible rewsing of used films, ~nuniformed films, etc.
are dissolved. In comparison with the sheet pack agents obtained by crosslinking polyacrylate wi-th crosslinking agents such as calcium chloride, etc., in an aqueous solution, the ointment of this invention has good adhesion and a remarkable effect in the adhesion of the reapplied pack agen-t.
The invention will now be described in detail wi-th reference to the accompanying drawings, wherein:
Fig. l shows adhesion change wi-th time of 2s Examples l-7 and Comparison examples l and 2;
Fig. 2 shows repeated adhesion of Examples 1-7 and Comparison examples l and 2;
Fig. 3 shows adhesion change with time o-f Examples 8-10 and Comparison examples 3 and 4; and Fig. 4 shows repeated adhesion of Examples 8-10 and Comparison examples 3 and 4.
Other objects and advantages of -this invention will become apparent with reference to the following Examples.
(Experiments and Comparison examples) Preparation of the compo-unds of the general formula (1~ (abbreviated as crosslinking agents).
Preparation example 1:
141 mol of additional mol numbers of poly-ethylene glycol is reacted with 2 mol of maleic anhydride -to form a half ester, and the ester is reacted with 2 mol of N-hydroxysuccinic imide to prepare a cross-linking agent 1.

CH2 ()-M
CH2 O-Ml O
Il O O C
Il 11 / \
Ml;~CH2CH2O-~n~C C-O-N ~ CH2 C=C C-CH2 H H O

Preparation example 2:
1 mol of glycerol is addition-palymerized with 1050 mol of propylene oxide, the obtained poly-propylene glycol ether of glycerol is reacted with :'

3 mol of phthalic anhydride to form a half ester, and the ester is reacted with 3 mol of N-hydroxyphthalic imide to prepare a crosslinking agent 2.

O CH
CH2 0 0 11~ \
l ll ll/C-C CH
M2; ~CH2CHO-~ 5 ~ C~ ~C \ C - C ~CH

~ ~ O CH
HC /CH
CH=CH

Preparation example 3:
1 mol of pentaerythritol is addi-tion-polymerized with 12000 mol of ethylene oxide, the obtained poly-ethylene glycol ether of pentaerythritol is reacted with 4 mol of citraconic anhydride to form a half ester, and the es-ter is reactd with 4 mol of N-hydroxy-maleic imide to prepare a crosslinking agent 3.

Cll2-O-M3 C}I2-O-M3 ~ C-CH
M3;~CH2CH20~ C C-O-N~ ¦¦
CH= ¢ C-CN

Preparation example 4:
1701 mol of additional mol numbers of poly-propylene glycol is reacted with 2 mol of succinic anhydride to form a half ester, and the ester is reacted with 2 mol of N-hydroxyglu-taconimide to prepare a cross-linking agent 4.

CH3 0 0 C~CH
11 11 / ~
M4;~CH2CHO~g5~C ~ C-O-N CH

o Preparation example 5:
1 mol of glucose is addition-polymerized with 25 mol of ethylene oxide and 25 mol of propylene oxide, ,.

~2 ~ 2 the obtained glucose-polyoxyalkylene glycol ether compound is reacted with 5 mol of tartari.c anhydride to form a half ester, and ~he ester is reacted with 5 mol of N-hydroxyglutal imide to prepare a crosslinking agent 5.

rlc~ , CH-OMs 11 1~
/ \
M5;~CH2CH20)5(CH2CHO~sC C-O-N \ / CH2 OH OH O

Preparation example 6:
1 mol of glycerol is addition-polymeriæed with a mixtwre of 2~ mol of ethylene oxide and 6 mol of butylene oxide, -the obtained glucose-polyoxyalkylene glycol ether compound is reacted with 3 mol oE succinic anhydride to form a half ester, and the ester is reacted with 3 mol of M-hydroxysuccinic imide to prepare a crosslinking agent 6.

, - ' ;~ ~ ' 9~Z~ 2 cll-o-M6 CH2 -O~M6 li ~ CH2 M6;~CH2CH2O)g(CH2CHO~zC C-O-N\

Example 1:
Based on the compounding as shown in Table 1, a raw material No. 1 is added into 9/10 of a raw material No. 36 and heated to dissolve at 60-70C. Then, a raw material No. 3 is added to the solution, stirred and dissolved. Further, materials No. 18 and No. 26 are added and s-tirred with a dissolver to disperse. To the dispersed solution, materials Nos. 28, 29, 30 and 33 are added, stirred with the dissolver at 2000 rpm for 5 minutes to disperse and obtained A1 liquid.
On the other hand, B1 liquid is obtained by adding 1/10 of the material No. 36 into a material No. 12~ stirring and dissolving.
After A1 liquid is added -to B1 liquid, stirred and mixed, the solution is applied to a piece of non-woven fabric. Then, the cataplasma of Example l is obtained by facing wi-th polyethylene film.
Using the cataplasma, the changi.ng of the adhesion with time is measured by the method as shown '- ' ': " , ' ~ D~2 below.
The result is shown in Fig. 1.
(Method fo~ measuring the adhesio~) A cataplasma cut 2 cm squares is applied 05 on a flat part of an arm. After a certain time, an acrylic resin plate of 2 cm squares and 1 mm thickness having a reverse U type puller at the center is applied by an adhesive on-to the cataplasma. After 10 minutes, the puller is pulled up to a vertical direction with lo a spring balance of 500 g having a hook and the adhesion is measured.
The properties of strike-through, shaping retention, adhesion and maintenance o~ cool-feeling are also -tes-ted.
The result is s~own in Fig~ 1 and Table 2.
~Method for measuring the adhesion of repetition) According to the method for measuring the adhesion, the first adhesion of the cataplasma is measured. Then, the tested material is applied again on the arm, and, after 10 minutes, the adhesion is measured again. This action is repeated 4 times.
The result is shown in Fig. 2.
Experiment 2:
Based on the compounding as shown in Table 1, the raw material No. 1 is added into 9/10 of the raw material No. 36 and heated to dissolve at 60-70C.
Then, a raw material No. ~ is added to the solution, stirred and dissolved. Further, materials Nos. 21 and ~' ' 3~26;i~ 2 26 are ad~ed and stirred with the dissolver to clisperse.
To the dispersed solution, materials Nos. 27, 29, 30, 31 ancl 33 are added, stirred with the dissolver at 2000 rpm -for 5 minutes to disperse and obtained A2 05 liquid. On the other hand, B2 liquid is obtained by adding l/:L0 of the material No. 36 into a material No. 13, stirring and dissolving.
After A2 liq~lid is added to ~2 liquid, stirred and Mixed, the solution is applied to a piece of non-woven fabric. Then, the cataplasma of Example 2 :is obtained by facing with polyethylene film.
Testing with the same cataplasma test method as Example 1, the resul-t is shown in Figs. 1 and 2 and Table 2.
Experiment 3:
Based on the compounding as shown in Table 1, -the raw material No. 1 is added into 1/2 of -the raw material No. 36 and heated to dissolve at 70-80C.
Then, a raw material No. 5 is added to the solution, stirred and dissolved. Further, materials Nos. 20, 23, 29, 30 and 33 are added, s-tirred with the dissolver at 1500 rpm for 10 minutes to disperse and obtained A3 liquid. On the other hand, B3 liquid is obtained b~
adding 1/2 of the material No. 36 in-to a material No. 14, stirring and dissolving.
After A3 liquid is added to B3 liquld, stirred and mixed, the solution is applied to a piece of non-~oven fabric. Then, -the cataplasma of Example 3 is .: .

~ 39 ~
obtained by facing with polypropylene film.
Testing wi~h the same cataplasma tes~ method as Example 1, the result is shown in Figs. 1 and 2 and Table 2.
05 Example 4:
Based on the compounding as shown in Table 1, the raw material No. 1 is added into 3/4 of the raw material No. 36 and heated to dissolve at 90-100C.
Then, a raw material No. ~ is added to the solution, stirred and dissolved. Further, materials Nos. 10, 22, 24 and 26 are added and stirred with the dissolver to disperse. To the dispersed solution~ materials Nos. 27, 29, 30 and 33 are added, stirred with the dissolver at 2500 rpm for 10 minutes to disperse and obtained A4 liquid. On the other hand, B4 liquid is obtained by adding 1/10 of the material No. 36 into a material ; No. 15, stirring and dissolving.
After A~ liquid is added to B4 liquid, stirred and mixed, the solution is applied to a piece of non-woven fabric. Then, the cataplasma of Example 4 is obtained by facing with polypropylene film.
Testing with the same cataplasma test method as Example 1, the result is shown in Figs. 1 and 2 and Table 2.
Example 5:
Based on the compounding as shown in Table 1, the raw material No. 1 is added into 9/10 of the raw material No. 36 and heated to dissolve at 90~100C.

:' ~ v ~ æ~2~
Then, a raw materlal No. 7 is added -to the solution, stirred and dissolved. Further, materials Nos. 18, l9, 23 and 25 are added and stirred with a dissolver ~o disperse. To the dispersed solution, materials Nos. 28, 05 29, 31 and 33 are added, stirred with the dissolver at 2500 rpm for 10 minutes to disperse and obtained A5 liqu-id. On the other hand, Bs liquid is obtained by adding 1/~ of the material No. 36 into a ma-terial No. 16, stirring and dissolving.
I0 After A5 liquid is added to B5 liquid, stirred and mixed, the solution is applied to a piece of non-woven fabric. Then, the cataplasma of Example 5 is obtained by facing with polypropylene film.
Testing with the same cataplasma ~est method as Example 1, the result is shown in Figs. 1 and 2 and Table 2.
Experiment 6:
Based on the compo~mding as shown in Table l, the raw material No. 1 is added into 9/10 of the raw material No. 36 and stirred to dissolve a-t 25-35~C.
Then, raw ma-terials Nos. 18 and 26 are added to the solution, stirred and dissolved. Further, ma-terials Nos. 32 and 33 are added, stirred with the dissolver at 2000 rpm for 15 minutes to disperse and obtained A6 liquid. On the other hand, B6 liquicd is obtained by adding 1/10 o -the material No. 36 into a ma-terial No. 17, stirring and dissolving.
After A6 liquicl is added to B6 liquid, stirred ~ 92 and mixed, the solution is applied to a piece of non-woven fabric. Then, the cataplasma o-f Example 6 is ob-tained by facing with polypropylene film.
Testing wi-th the same ca-taplasma -te~t me-thod 05 as Example 1, the result is shown in Figs. 1 and 2 and Ta'ble 2.
Experiment 7:
Based on -the compounding as shown in Table 1, the raw material No. 1 is added into 9/10 of the raw material No. 36 and heated to dissolve at 60-70C.
Then, raw material Nos. 18 and 26 are added to the solution, stirred with a dissolver and dispersed.
Further, materials Nos. 28, 29, 30 and 33 are added, stirred with the dissolver at 2000 rpm for 5 minutes to disperse and obtained A(l) liquid. On the other hand, B(l) liquid,is obtained by adding 1/10 of the material No. 36 into the material No. 12, stirring and dissolving.
After A(l) liquid is added -~o B(l) liquid, stirred and mixed, the solwtion is applied to a piece of non-woven fabric. Then, t'he cataplasma of Example 7 is obtained by facing with polyethylene film.
Testing with the same cataplasma test method as Example 1, the reswlt is shown in Figs. 1 and 2 and Table 2.
Comparative example 1:
Based on the compo~mding as shown in Tab'le 1, the raw material No. l is added in-to 9/10 of the raw material No. 36 and heated to dissolve. Then, raw ~ ~ 2~ ~
materials Nos. 8, 10, 13, 23, 27 and 29 are added,stirred with the dissolver at 2500 rpm for 10 minutes to disperse and the obtained ointment or plaster is applied to a piece of non-woven fabric. Then, the 05 cataplasma of Comparative example 1 is obtained by facing with polyethylene film.
Testing with the same cataplasma test method as Example 1, -the resul-t is shown in Figs. 1 and 2 and Table 2.
lo Compara-tive example 2:
Based on the compounding as shown in Table 1, a raw material No. 3~ is added in-to a raw Inaterial No. 9, raw materials Nos. 28, 29 and 30 are added and homogeneowsly stirred, and then a solution of 1/2 of lS the raw material No. 36 dissolving a material No. 11 is added and homogeneously mixed, then 1/2 o~ the raw material No. 36 is added, and a raw material No. 35 is added and stirred sufficiently. The obtained ointment or plaster is applied to a piece of non-woven fabric.
Then, the cataplasma of Compara-tive example 2 is obtained by facing with polyethylene film.
Testing with the same cataplasma test method as Example 1, the resul-t is shown in Figs. 1 and 2 and Table 2.
As shown in the test res-ult of Eig. 1, Examples 1-7 show high early adhesion, the adhesion increasin~ along with the evaporation of water content with time, and maintenance of remarkably high adhesion.

~ 6 ~
However, Comparative example l shows low early aclhesion, and the adhesion is not increase along with the evaporation of water content with time. And the value after 120 minutes is not arrived at the value of the 05 early adhesion of Examples 1-7. In Comparative example 2, the adhesion is in the range of the adhesion of Examples 1-7 until 60 minutes. However, after the time, the adhesion gradually lowers.
Further, from the -test result of ~ig. 2, Examples 1-7 show repeatable adhesion. After the sample o the cataplasma is applied, it is peeled off and reapplied, and then peeled off. The said action is repeated 4 times. As the result, the adhesion does not lower, and the readhesion shows above 45 G/CM2.
However, in Co~parative example 1, the early adhesion is low and shows 8 g/cm2, and the readhesion is also lO g/cm2. In Cornparative example 2, the early adhesion is 60 g/cm2, the value is considerably high. In spite o this, the first readhesion is 26 g/cm2 and the value is very low. 4th of the readhesion is very low 18 g/cm2.

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Table_2 _ ~ Strike- Shaping Adh Maintenance of through retention eslon cool-feeling (note 1) (note 2) no e (note 4 Example 1 o _ o Example 2 _ o Example 3 o o Example 4 o Example 5 o o o o Example 6 o o o o _ Example 7 o Comparative o x x x Example Comparative x o ~
Example 2 l _ _ Note 1: Strike-through test The strike-through of cataplasma to back surface of non-woven fabric is evaluated by the following evaluation modes:
o none, Q partial and x remarkable.
Note 2: Shaping reten-tion With cataplasma, it i5 evaluated by the following evaluation modes:
o Droop by bodily temperatwre or sweating is not entirely recog-nized.
A part softenes and droops.
x Droop ~26Z~2 Note 3: Adhesion o Adhesion feeling to the skin is good, the adhesion between the skin and the ointment or plaster is not released by bending and stretching of the applied part.
Adhesion feeling to the skin is good, but sometimes, the adhesion releases with time.
x Adhesion feeling -to the skin is weak.
Note 4: Ma:intenance of cool-feeling The feeling in case of wsing the cataplasma for 12 hours is evaluated.
o There is cool-feeling after 12 hours.
There is cool-feeling af-ter 6 hours.
x There is no cool-feeling after 6 hours.
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Experiment 8:
Based on the compounding as shown in Table 3, the raw material No. 1 is added into 9/10 o~ a raw material No. 19 and heated to dissolve at 60-70C.
Then, the raw material No. 5 is added to the solution, stirred and dissolved. Further, materials Nos. 11, 13 and 15 are added, stirred with the dissolver at 1000 rpm for 5 minutes to disperse and obtained A8 liquid.
On the other hand, B8 liquid is obtained by adding 1/10 of -the material No. 19 into the material No. 7, stirring and dissolving.
After A8 liquid is added to B8 liquid, stirred and mixed at room temperature for 10 minutes, -the solution is poured into a polypropylene vessel of 200x250x2 mm at the thickness of 0.6 mm, and warmed at 2 minu-tes at 50C. The obtained gel is applied -to a piece of non-woven fabric by softly pushing. After cooling to the room temperat-ure, the gel is peeled o-ff -from the vessel. A polypropylene sheet is adhered to the opposite side of the gel sheet, and the sheet cataplasma of Example 8 i5 obtained.
Testing with the same cataplasma test method :

~262~2 as Example l, the measurement of adhesion and repeated adhesion is conducted, and the resul-t is shown in Figs. 3 and 4.
Experiment 9:
05 Based on the compounding as shown in Table 3, a raw material No. 2 is added into 8/10 of the raw material No. 19 and heated to dissolve at room tempera-ture for 10 minutes. Then, materials Nos. ll, 14 and 17 are added, stirred with the dissolver at 1500 rpm for 10 minutes to disperse and obtained Ag liquid.
On the other hand, Bg liquid is obtained by adding 2/10 of -the material No. 19 into the material No. 6, stirring and dissolving.
After Ag liquid is added to Bg liquid, s-tirred and mixed at room -temperature for 10 minutes, the solution is poured into a polypropylene vessel of 200x250x2 mm a-t the thickness of 0.6 mm warmed at

5 minutes at 40C, and the thus ob-tained gel is applied to a piece of non-woven fabric of 200x250xl mm by softly pushing. After cooling to the room temperature, the gel is peeled off from the vessel. A pol~propylene sheet is adhered to the opposite side of the gel sheet, and the sheet pack of Example 9 is obtained.
Testing with -the same pack -test method as Example 1, the measurement of adhesion and repeated adhesion is conducted, and the result is shown in Figs. 3 and ~.

- ~0 -~ ~ 2 Experiment 10:
Based on the compounding as shown in Table 3, the raw material No. 18 is added into 8/10 of the raw material No. 19. Then, the raw material No. 3 is 05 added, and stirred to dissolve at room temperature for 10 minutes. Then, the raw material No. 6 is added to the solution, stirred and dissolved. Fur-ther, materials Nos. 12, 13 and 16 are added, stirred with the dissolver at 1500 rpm for 5 minutes to dissolve and disperse and lo obtained Alo liq~id. On the other hand, Blo liquid is ob-tained by adding 2/10 of the material No. 19 into the material No. 8, st-irring and dissolving.
After Alo liquid added to ~lO liquid, stirred and mixed at room temperature for 5 minutes, the solu-tion is poured in-to a polypropylene vessel of 200x250x2 mm at the thickness of 0.6 mm warmed at l minute at 60C, and the obtained gel is applied to a piece of non-woven fabric of 200x250xl mm by softly pushing. After cooling to the room temperature, the gel is peeled off from the vessel. A polypropylene sheet is adhered -to the opposite side of the gel sheet, and ~he sheet pack of Example 10 is obtained.
Testing with the same pack test method as Example 1, -the measwrement of adhesion and repeated adhesion i.s cond-uc-ted, and -the result is shown in Figs. 3 and 4.
Comparative e~ample 3:
Based on the compounding as shown in Table 3, ' ~`` ' ~ .

~ 2 the raw material No. 18 is addecl into the raw material No. 4 and heated to dissolve at room temperatwre for 10 minutes. Then, raw materials Nos. 11 and 13 are added, stirred with the dissolver at 1000 rpm for 05 5 minutes to dissolve. Then, materials Nos. S and 19 are added and stirred homogeneously at room temperature.
The obtained gel solution is applied to a side surface of non-woven -fabric at 0.6 rnm thickness. A polyester film is adhered to the opposite side surface of the fabric, put into a closing bag, and heated at 60C for 5 minutes, and the sheet pack of Comparative example 3 is obtained.
Testing with the same pack test method as Example 1, the measurement of adhesion and repeated adhesion is conducted, and the result is shown in Figs. 3 and 4.
Comparative example 4:
Based on the compounding as shown in Table 3, the raw material No. 18 is aclded into the raw material No. 4 and heated to dissolve at room tempera-ture for 10 minutes. Ihen, raw materials Nos. 11 and 15 are added, stirred with the dissolver at 1500 rpm for 5 minutes to clissolve. Then, materials Nos. 10 and 19 are added and stirred homogeneously at room temperatwre.
The ob-tained gel solution is applied to a side surface of non-woven fabric at 0.6 mm thickness. A polyester film is adhered -to the opposite side surface of the fabric, pwt into a closing bag, and heated at 60C for - ~2 -~z~

S minutes, and the sheet pack of Comparative example 4 is obtained.
Testing wi-th the same pack test method as Example l? the measurement of adhesion and repeated 05 adhesion is conducted, and the result is shown in Figs. 3 and 4.
As shown in the result of Fig. 3, Examples 8-lO show high early adhesion, the adhesion increasing along with the evapora~ion of wa-ter content with time, 0 and maintenance of remarl~ably hi~h adhesion. However, in Comparative example 3, the early adhesion is in the range of the value of Examples 8-lO, and af-ter that, the adhesion lowers. In Comparative example 4, the early adhesion is low, and the increase of the adhesion with time is also little.
By the high adhesion as shown in Examples 8-10, the sheet pack adheres strongly -to dirt of the skin, old keratin of the skin, etc. The sheet is kept for about 5-20 minutes, the then peeled off. As -the resul-t, the effec-t that these metabolism inhibitors of the skin are removed is exhibited.
Further, as shown in Examples 8-lO, the adhesion is increased with time. By this, -the skin is tensioned and incited. It i.s useful to the beauty effect.
As shown in the result of Fig. 4, in Examples 8-lO, the lowering of the 4 times readhesion is no-t shown. The other hand, Comparative example 3 shows - ~3 -~%~9~

a remarkably lowering in the firs-t readhesion, and the readhesion does not recover hereaf-ter. In Comparative example 4, the early adhesion is 1OW, and the increase of the adhesion by the readhesion is not also recognized.
05 ~s shown in Examples 8-lO, the high readhesion exhibits a characteristic of the sheet pack that, as if a visitor suddenly comes when these sheet packs are applied to the face, the sheet is once peeled off, and reapplied after that, the cleansing effect is not decreased.
Patch test:
In regard to Examples l and 9, Comparative examples l and 3, the patch test was conducted for 20 healthy adults who are 23-61 years old.
(Method of the pa-tch test) Each sample as described above was cut square of 25x25 mm, and applied to the inside of the arms of tested persons.
The test time was l hour and 24 hours, the skin was observed within 5 minutes after each test time, and the result was evaluated by the following criteria.

- ~4 -Z~
Criteria No erythema Very slight erythema Well defined erythema ~ Moderate to severe erythema ++~ Severe er-ythema to slight eschar formation The -test result is shown in Tables 4 and 5.

Table 4 l hour patch test result _ l Compara- Compara-No. Name Sex Age Example Example tive tive 1 9 example example l A.A. female 25 _ 2 H.H. ......... 35 _ _ ~
3 H.O. male 26 _ _ _ 4 M.I. 11 26 _ 5 S.O. ll 44 _

6 M.K. ll 23 _ _ _

7 H.K. .......... 34 _ _

8 T~Ko ~, 24 _

9 Y.K. ,. 4l _ lO M.S. " 23 _ ll I.T. " 50 _ 12 H.D. " 49 _ _ _ 13 M.T. ~, 25 _ _ l4 K.N. " 40 _ 15 S.M. ,l 42 _ 16 T.M. ......... 38 _ _ 17 S.M. ll 33 _ _ 18 S.Y. ll ~2 _ _ l9 T.Y. ll 61 _ _ 20 T.Y. 4l ~ _ _ - ~5 -., .

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Table 5 24 hours patch test result _ Compara- Compara-No. Name Sex Age Example Example tive tive _ ._ _ _ 1 ~_ exalmple ,, exa3mple 1 A.A. female 25 _ _ _ 2 M.I. male 26 _ _ 3 H.O. ll26 _ _ _ 4 S.O. ...... 44 5 H.O. " 49 _ _ _ 6 M.K. ll23 _ 7 H.K. ll34 _ _ _ 8 T.K. ll24 _ _ 9 Y.K. ll41 _ _ _

10 M.S. ll23 _ _ ~ +
ll K.T. ll34 _ _ _ 12 H.D. ll49 _ ~
13 M.T. ll25 _ _ 14 Y.N~ ,l47 _ _ _ 15 N.F. ll45 _ _ _ 16 S.M. ll42 _ _ 17 T.M. .,38 _ _ 18 S.M. ,l33 _ _ _ 19 S.Y. ll42 _ _ _ 20 T.Y. _ 41 _ _ From these tables, in Comparative example 1, 1 hour patch test shows that l case per 20 cases produces slightly erythema, and 24 hours patch test shows that 2 case per 20 cases produces erythema. In Comparative example 3, 24 hours patch test shows that l case per 20 cases produce erythema.
On the contrary, Examples 1 and 9, both 1 hour patch test and 24 hours patch test show that no .

~2~2at92:
case produces erythema. From the results, it is recognized that the ca-taplasma and the pack agents of this invention give little stim~llate for the skin.

-: -..

.

Claims

The embodiments of the invention in which as exclusive property or privilege is claimed are defined as follows:

1. A hydrated adhesive gel using a product which is obtained by reacting an aqueous solution essentially containing protein having amino groups at the side chains thereof, and an N-hydroxyimidoester compound represented by the following formula (1).

... (1) wherein X is a residue of a compound having 2 to 6 of carbons and 2 to 6 of hydroxyl groups, A is one or more groups selected from oxyethylene, oxypropylene, and oxybutylene groups, Y is a residue of dibasic acid, Z is and its partial ? a groupf of (3) substituent, ? a groupf of (4) substituent, ? a groupf of (5) substituent, and its partial ? a groupf of (6) substituent, ? a group of (7) substituent, ? a group of (8) substituent, m is 1-3000 n is 2-6.

2. A hydrated adhesive gel using a product which is obtained by reacting an aqueous solution essentially containing protein having amino groups at the side chains thereof, a gelling retarder, and a hydrophilic tackifier with an N-hydroxyimidoester compound repre-sented by the following formula (1).

... (1) wherein X is a residue of a compound having 2 to 6 of carbons and 2 to 6 of hydroxyl groups, A is one or more groups selected from oxyethylene, oxypropylene, and oxybutylene groups, Y is a residue of dibasic acid, Z is ? a groupf of (2) and ts partial ? a groupf of (3) and its partial ? a groupf of (4) substituent, ? a groupf of (5) and its partial substituent, and its partial ? a groupf of (6) substituent, ? a group of (7) and its partial substituent, ? a group of (8) and its partial substituent, m is 1-300 n is 2-6.

3. A hydrated adhesive gel as defined in claim 1, wherein the gelling retarder is a compound selected from group of both inorganic compound which is contained chlorine, bromine, nitrate group, and organic group, resorcinol, hydroquinone, pyrochatecol, pyrogallol, alcohols, urea and furfural.

4. A hydrated adhesive gel as defined in claim 1, wherein the hydrophilic tackifier is selected from the group consisting of glycerol, ethylene glycol, propylene glycol, polyethylene glycol and polypropylene glycol which are liquid at ordinary temperatures.

5. A hydrated adhsive gel as defined in claim 1, wherein a hydrated adhesive gel is selected from the group consisting of ointment and plaster.