WO1998040881A1 - Corrosion protection of aluminum and aluminum alloys using emeraldine base polyaniline - Google Patents
Corrosion protection of aluminum and aluminum alloys using emeraldine base polyaniline Download PDFInfo
- Publication number
- WO1998040881A1 WO1998040881A1 PCT/US1998/004832 US9804832W WO9840881A1 WO 1998040881 A1 WO1998040881 A1 WO 1998040881A1 US 9804832 W US9804832 W US 9804832W WO 9840881 A1 WO9840881 A1 WO 9840881A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- coating
- substance
- metal piece
- aluminum
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/02—Polyamines
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/02—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions
Definitions
- the present invention relates to the protection of aluminum and its alloys from corrosion.
- EB emeraldine base polyaniline
- containing film protects the aluminum surface it is coated on, but may also protect the
- the present invention includes a coating composition for
- the composition comprises
- oligomers may be trimers, tetramers,
- emeraldine base may range from about .3 to about .75 units.
- emeraldine base or oligomers thereof may also be provided with additional ring substituents for purposes such as providing polymer cross linking, improved or in
- substituents may be, for example, carbonate groups, alkyl groups, epoxy groups, and
- the coating composition also include a
- polymers/oligomers mentioned herein may also offer corrosion protection of
- corrosion protecting polymer/oligomer also is likely to be utilized in order to improve
- the present invention also includes a coated metal piece which may be of
- the coated metal piece also has on at least one such surface a coating
- the coating may also be provided with a
- coating sealant such as a lacquer or epoxy sealant.
- the present invention also includes, in broadest terms, a coating composition
- composition for protecting aluminum and alloys thereof from corrosion, the composition
- oligomers comprising at least one substance selected from the group consisting of sulfonated polyaniline and salts and oligomers thereof.
- oligomers may include trimers,
- the sulfonated polyaniline coatings may also be born by resin such as acrylic
- the sulfonated polyaniline coatings will have a degree of sulfonation
- sulfonated polyaniline may also be provided with additional ring substituents for
- substituents may be, for example, carbonate
- the present invention also includes a coated metal piece comprising a metal
- said metal piece selected from the group consisting of aluminum and alloys thereof, said metal piece
- oligomers may be trimers
- the coated metal piece may also have a coating sealant atop the coating, and
- sealants may be, for instance, lacquers and epoxy sealants.
- Figure 1 shows the schematic chemical structure of emeraldine base
- Figure 2 shows the schematic chemical structure of sulfonated (100%)
- polyaniline in the emeraldine base form.
- Figure 3 shows the XPS Al 2p core level depth profile of a polished A13003
- Figure 4 shows the XPS Al 2p core level spectra of (a) an A13O03 sample
- Figure 5 shows the XPS Al 2p core level spectra of (a) A13003 exposed to
- Figure 6 shows a graph of a potentiodynamic scan showing the results of a
- the surface was polished with 600 grit emery paper and degreased
- Figure 7 shows a graph of a potentiodynamic scan showing the results of a
- Figure 8 shows a graph of a potentiodynamic scan showing the results of a
- Figure 9 shows a graph of a potentiodynamic scan showing the results of a
- Example 1 EB films were coated onto A13003 alloys and were found to reduce the
- samples consisting of Al vapor deposited onto glass.
- the acid used was 0.1 M HCl. After the acid exposure, the samples were
- X-ray photoelectron spectroscopy was carried using a VG Scientific
- depth profiling was carried out both the A13003 side and the EB side.
- metallic Al being the dominating feature at depths of -10 nm giving an estimate of the
- the unprotected A13003 sample (a) has a
- top coats typically used in the paint industry to protect the primer layer An example
- the unprotected sample has a distinct shoulder at -78 eV
- thickness of the EB films were -20 micrometers, and -40 micrometers for the trimer
- the potentiostat used for the potentiodynamic experiments was a Gamry Instruments model PC3 potentiostat galvanostat equipped with the CMS 100 corrosion system
- the scanning speed for the experiments was 5 mV/s.
- Trimer top coated A12024-T3 coupons had open circuit potentials of - -0.75 V vs
- the aluminum alloy is ennobled in the presence of an EB or a trimer
- top coat i.e., some form of anodic protection is taking place.
- trimer films have throwing power, i.e., the ability to protect a metal against
- Fig. 8 are shown the potentiodynamic scans for scribed EB and epoxy, and the
- trimer samples was reduced by an order of magnitude compared to the epoxy- coated coupons.
- oligomers of EB and SPAN trimers, tetramers, octamers, hexdecamers, etc.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU64595/98A AU6459598A (en) | 1997-03-11 | 1998-03-11 | Corrosion protection of aluminum and aluminum alloys using emeraldine base polyaniline |
JP10539791A JP2000512344A (en) | 1997-03-11 | 1998-03-11 | Corrosion protection of aluminum and aluminum alloys using emeraldine basic polyaniline |
CA002283926A CA2283926A1 (en) | 1997-03-11 | 1998-03-11 | Corrosion protection of aluminum and aluminum alloys using emeraldine base polyaniline |
EP98910331A EP0966737A4 (en) | 1997-03-11 | 1998-03-11 | Corrosion protection of aluminum and aluminum alloys using emeraldine base polyaniline |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3668597P | 1997-03-11 | 1997-03-11 | |
US60/036,685 | 1997-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998040881A1 true WO1998040881A1 (en) | 1998-09-17 |
Family
ID=21890053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/004832 WO1998040881A1 (en) | 1997-03-11 | 1998-03-11 | Corrosion protection of aluminum and aluminum alloys using emeraldine base polyaniline |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0966737A4 (en) |
JP (1) | JP2000512344A (en) |
AU (1) | AU6459598A (en) |
CA (1) | CA2283926A1 (en) |
WO (1) | WO1998040881A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1118631A1 (en) * | 2000-01-18 | 2001-07-25 | Council of Scientific and Industrial Research | Compensated sulphonated polyaniline and a process for the preparation thereof |
CN100358964C (en) * | 2004-12-08 | 2008-01-02 | 吉林正基科技开发有限责任公司 | Polyaniline corrosion proof sealant |
CN101381578B (en) * | 2008-10-17 | 2011-08-03 | 哈尔滨工程大学 | Super-light Mg-Li alloy high-efficiency anticorrosive paint |
WO2013188496A3 (en) * | 2012-06-12 | 2014-07-10 | Cbi Polymers, Inc. | Corrosion resistant additive compositions and coating compositions employing the same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8691028B2 (en) * | 2006-05-10 | 2014-04-08 | The Boeing Company | Article having a hexavalent-chromium-free, corrosion-inhibiting organic conversion coating thereon, and its preparation |
JP4640399B2 (en) * | 2007-09-25 | 2011-03-02 | トヨタ自動車株式会社 | Rust-proof metal substrate and rust prevention method on metal substrate surface |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5137991A (en) * | 1988-05-13 | 1992-08-11 | The Ohio State University Research Foundation | Polyaniline compositions, processes for their preparation and uses thereof |
US5208301A (en) * | 1988-05-13 | 1993-05-04 | Ohio State University Research Foundation | Sulfonated polyaniline compositions, ammonium salts thereof, process for their preparation and uses thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2133383T3 (en) * | 1992-01-21 | 1999-09-16 | Zipperling Kessler & Co | ANTI-CORROSION CONJUGATED POLYMER PAINT FORMULATIONS FOR METALLIC SURFACES. |
US5441772A (en) * | 1993-09-29 | 1995-08-15 | Air Products And Chemicals, Inc. | Protecting carbon steel from corrosion with nonconducting poly(aniline) |
-
1998
- 1998-03-11 AU AU64595/98A patent/AU6459598A/en not_active Abandoned
- 1998-03-11 CA CA002283926A patent/CA2283926A1/en not_active Abandoned
- 1998-03-11 WO PCT/US1998/004832 patent/WO1998040881A1/en not_active Application Discontinuation
- 1998-03-11 EP EP98910331A patent/EP0966737A4/en not_active Withdrawn
- 1998-03-11 JP JP10539791A patent/JP2000512344A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5137991A (en) * | 1988-05-13 | 1992-08-11 | The Ohio State University Research Foundation | Polyaniline compositions, processes for their preparation and uses thereof |
US5208301A (en) * | 1988-05-13 | 1993-05-04 | Ohio State University Research Foundation | Sulfonated polyaniline compositions, ammonium salts thereof, process for their preparation and uses thereof |
Non-Patent Citations (2)
Title |
---|
CHEMICAL ABSTRACTS, 1 January 1900, Columbus, Ohio, US; abstract no. 127:5508, XP002911883 * |
See also references of EP0966737A4 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1118631A1 (en) * | 2000-01-18 | 2001-07-25 | Council of Scientific and Industrial Research | Compensated sulphonated polyaniline and a process for the preparation thereof |
US6326441B1 (en) | 2000-01-18 | 2001-12-04 | Council Of Scientific And Industrial Research | Compensated sulphonated polyaniline and a process for the preparation thereof |
CN100358964C (en) * | 2004-12-08 | 2008-01-02 | 吉林正基科技开发有限责任公司 | Polyaniline corrosion proof sealant |
CN101381578B (en) * | 2008-10-17 | 2011-08-03 | 哈尔滨工程大学 | Super-light Mg-Li alloy high-efficiency anticorrosive paint |
WO2013188496A3 (en) * | 2012-06-12 | 2014-07-10 | Cbi Polymers, Inc. | Corrosion resistant additive compositions and coating compositions employing the same |
Also Published As
Publication number | Publication date |
---|---|
JP2000512344A (en) | 2000-09-19 |
AU6459598A (en) | 1998-09-29 |
CA2283926A1 (en) | 1998-09-17 |
EP0966737A4 (en) | 2000-04-19 |
EP0966737A1 (en) | 1999-12-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Qian et al. | The application of anti-corrosion coating for preserving the value of equipment asset in chloride-laden environments: a review | |
Majd et al. | The role of neodymium based thin film on the epoxy/steel interfacial adhesion and corrosion protection promotion | |
EP0792922B1 (en) | Chromate-free protective coatings | |
Racicot et al. | Corrosion protection of aluminum alloys by double-strand polyaniline | |
Twite et al. | Review of alternatives to chromate for corrosion protection of aluminum aerospace alloys | |
Mansfeld et al. | Corrosion protection of Al alloys and Al-based metal matrix composites by chemical passivation | |
Spinks et al. | Electroactive conducting polymers for corrosion control: part 2. Ferrous metals | |
EP0492306B1 (en) | Steel sheet with enhanced corrosion resistance having a silane treated silicate coating | |
JP4194654B2 (en) | Nonchromate corrosion inhibitor for aluminum alloys | |
KR100487855B1 (en) | Method for treating metallic surfaces | |
US7241371B2 (en) | Additive-assisted, cerium-based, corrosion-resistant e-coating | |
Suay et al. | The evaluation of anticorrosive automotive epoxy coatings by means of electrochemical impedance spectroscopy | |
US2525107A (en) | Coating composition for metals | |
US6749945B2 (en) | Advanced composite ormosil coatings | |
EP0966737A1 (en) | Corrosion protection of aluminum and aluminum alloys using emeraldine base polyaniline | |
Seré et al. | The surface condition effect on adhesion and corrosion resistance of carbon steel/chlorinated rubber/artificial sea water systems | |
Shah et al. | Corrosion and Bonding Behaviors of Intrinsically Conductive Polymers on Aluminum (AI 2024-T3) | |
Yasuda et al. | “Barrier-Adhesion” Principle for Corrosion Protection | |
Kendig et al. | Comparison of corrosion protection provided by a non-volatile organic compound epoxy and a marine epoxy primer | |
JPS58219274A (en) | Anticorrosive paint for anticorrosive cathode | |
Bisht et al. | Highly durable and novel anticorrosive coating based on epoxy reinforced with poly (aniline-co-pentafluoroaniline)/SiO2 composite | |
Yu et al. | Improved Corrosion Protection of Aluminum Alloys by System Approach Interface Engineering: Part 4Spray Paint Primer-Coated Aluminum Alloys | |
JP2005324543A (en) | Surface treated steel | |
Shah et al. | Adhesion of electrochemically formed conducting polymer coatings on Al-2024 | |
Yu et al. | Protection of aluminum alloys from filiform corrosion by low-temperature plasma interface engineering |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CA JP |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2283926 Country of ref document: CA Ref country code: CA Ref document number: 2283926 Kind code of ref document: A Format of ref document f/p: F Ref country code: JP Ref document number: 1998 539791 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998910331 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 64595/98 Country of ref document: AU |
|
WWP | Wipo information: published in national office |
Ref document number: 1998910331 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1998910331 Country of ref document: EP |