DE1211922B - Aid for filler retention in papermaking - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY Int. CL: D21d

D 21h
GERMAN 4fflTW> PATENT OFFICE

German class: 55 c -3/10

EDITORIAL

File number: F 34651VI b / 55 c
1211 922 Filing date: August 9, 1961

Opening day: March 3, 1966

Aid for filler retention in

The present invention relates to papermaking

Use of products made by implementation
from 0.8 to 0.95 mol of epichlorohydrin or a-dichlorohydrin with 1 mol of a di- or polyamine, the applicant of which:

Amino groups with at least 3 carbon atoms 5 Farbenfabriken Bayer Aktiengesellschaft,
are separated, in a diluent, preferred Leverkusen

wise in water, made as an aid for

filler retention in papermaking. Named _{as inventor:}

As di- or polyamines, which according to the invention ^ ", _{1f T. T} ,

conversion products to be used based on io Dr. Wolfgang Lehmann, Leverkusen
are, for example, trimethylene _

diamine, tetramethylene diamine, hexamethylene diamine, *

1,3-diaminobutane, 2-oxy-l, 3-diaminopropane, dipro- the retention effect increases with the increase in

pylenetriamine, dioxydipropylenetriamine of the formula increases viscosity and that to achieve good

HN γη rwrnmrH νηγη rwnwru ktw ¹⁵ R ^etenti onswerkung the viscosity of a 15% H ₂ N-CH ₂ -CH (OH) CH ₂ NHCh ₂ -CH (OH) CH ₂ NH ₂ . _{Solution at least} 1OcP ₂₃₀ , the viscosity of a

Tetrapropylenpentamine, Ν, Ν'-Diaminopropyl-tetra- 25% solution at least 40 cP _2S o and the Vis-

methylenediamine of the formula viscosity of a 35% solution at least 160 cP ₂₅ o

H N crw ϊ MHCrw ϊ xrmrw ϊ \ rw should be. Sufficient storage stability of the

H ₂ N- (CH ₂ ) ₃ NH (CH ₂ ) ₄ NH (CH ₂ ) ₃ NH ₂ , _ao solutions containing the reaction products,

1,6,11-triamino-n-undecane of the formula d. H. a storage stability that increases at room temperature

extends ^{tur au} ^ ^m i ^{n (3estens} 1 year, is then added _{when the} p _{rodu] tj} j _{the robe of a} p _{of the} aqueous

I solution with the addition of twice the amount of 50%

² 25 potassium hydroxide solution has precipitated out in water within

The implementation times of one hour have proven to be particularly effective. If you want the storage products, which γ, / -Diaminopropylalkylamine to improve the stability, then the amount of EpiFormel chlorohydrin or «-dichlorohydrin is within the other

H xrrR. to keep m rw xr rw πι γη mm given range as low as possible;

- ² - -: ² - ² - 30 if you want to increase the viscosity, it is

Ι ,, ι amount of epichlorohydrin or «-dichlorohydrin

^ as high as possible within the specified range

such as B. γ, / -diaminopropyl-methylamine and γ, γ'- to keep .

Diaminopropyl-butylamine, are based. The ones given in the example below

To produce the percentages to be used according to the invention, percentages by weight are based on

It is advisable to proceed in such a way that the solid substance contained in the paper stock,

the implementation of the reaction components in _.

the diluent at temperatures between example

20 and 70 ° C. The concentration of the paper pulp prepared in the usual way

Action partner is expediently between 20 and 40 of the grinding degree 23 ° Schopper-Riegler one sets

60 percent by weight. It is recommended that the implementation 0.25% of one of the in the table below

to begin at a concentration of about 40% Ibis 7 listed reaction products, 20% titanium

and after reaching a viscosity of about 50 dioxide and 5% of a commercially available pink-red

up to 100 cP by diluting with the organic pigment used. You then get a her-

Solvent at a concentration of 15 to 45 excellent filler retention.

30% to complete. The excellent effect of the items 1 to 7

How large the deficit of epichlorohydrin or led reaction products according to the invention

a-dichlorohydrin is to be chosen, depends on the type against the effect of the reaction products,

of the amine under consideration, of the amount used for their preparation to 1 mole of di- or polyamine

Desired storage stability and viscosity of the 50 more than 1 mol epichlorohydrin or α-dichlorohydrin

turning solution as well as of the desired height was used, is from the table below

the retention effect. It should be noted that:

Moles of epichlorohydrin
to 1 mole
Amine

° / o titanium dioxide im
paper

Color of the paper

; ■, y'-diaminopropylmethylamine

;>, / -Diaminopropylbutylamine

Dipropylenetriamine

Dioxydipropylenetriamine

Ν, Ν'-diaminopropyl-tetramethylenediamine

Tetrapropylene pentamine '

1,6,11-triamino-n-undecane

7, γ'-diaminopropylmethylamine

Tetraethylene pentamine

0.87
0.94
0.88
0.93
0.85
0.82
0.83
3.00
1.60

14.2
14.0
13.6
13.8
13.5
12.5
12.4
8.0
11.0

deep pink

deep pink

deep pink

deep pink

deep pink

deep pink

deep pink

pale pink

pale pink

The preparation of the reaction products to be used according to the invention will be explained in more detail below with reference to the preparation of a reaction product from epichlorohydrin and γ, / -diaminopropyl-methylamine:

80.5 g of epichlorohydrin (0.87 mol) are added to a solution of 145 g of γ, γ'-diaminopropylmethylamine (1 mol) in 362 ml of water at 30 ° C., while stirring and with cooling, over the course of 1 hour. The temperature of the reaction mixture is then increased ^{to 40 ° C. in the course of 1} hour and the mixture is stirred at this temperature until the viscosity has risen to about 70 cP; this is the case after about 80 minutes. Then 145 ml of water are added to the reaction mixture; this reduces the viscosity to around 40 cP. The mixture is now heated at 40 ° C. until the viscosity of the solution has risen to about 120 cP. This viscosity is reached after about 2/2 hours, calculated from the addition of the 145 ml of water, or after 4 hours, calculated from the end of the addition of the epichlorohydrin. Finally, 171 ml of water are added to the solution. The solution prepared in this way contains 25% of the reaction product of epichlorohydrin and 3>, / - diaminopropylmethylamine and has a viscosity of 145 cP at 25 ° C.

A product with practically the same properties is obtained if instead of 0.87 mol of epichlorohydrin 0.9 mol of a-dichlorohydrin is used. The conversion product is formed in this case more slowly, but can if desired by adding potassium hydroxide or sodium hydroxide can be significantly accelerated in amounts up to 0.9 mol.

Claims (1)

Claim: Use of products made by reacting 0.8 to 0.95 moles of epichlorohydrin or a-dichlorohydrin with 1 mol of a di- or Polyamines, the amino groups of which are separated by at least 3 carbon atoms, in one Diluents, preferably in water, have been prepared as an aid to filler retention in papermaking. Documents considered: German Patent No. 731030. 609 510/233 2.66 © Bundesdruckerei Berlin