CA2460083A1 - Coating composition for metal substrates - Google Patents

Coating composition for metal substrates Download PDF

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Publication number
CA2460083A1
CA2460083A1 CA002460083A CA2460083A CA2460083A1 CA 2460083 A1 CA2460083 A1 CA 2460083A1 CA 002460083 A CA002460083 A CA 002460083A CA 2460083 A CA2460083 A CA 2460083A CA 2460083 A1 CA2460083 A1 CA 2460083A1
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CA
Canada
Prior art keywords
composition according
coating
coating composition
binder
primer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002460083A
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French (fr)
Other versions
CA2460083C (en
Inventor
Paul Anthony Jackson
Gerald Howard Davies (Deceased)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzo Nobel Coatings International BV
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26069223&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2460083(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from PCT/EP2001/010552 external-priority patent/WO2002022745A1/en
Priority claimed from PCT/EP2001/010635 external-priority patent/WO2002022746A1/en
Application filed by Individual filed Critical Individual
Publication of CA2460083A1 publication Critical patent/CA2460083A1/en
Application granted granted Critical
Publication of CA2460083C publication Critical patent/CA2460083C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/106—Anti-corrosive paints containing metal dust containing Zn
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates

Abstract

The present invention relates to a composition for coating a metal substrate which is intended to be fabricated and overcoated, wherein the binder comprises an acqueous silica sol having a SiO2/M2O mole ratio, with M representing the total of alkali metal and ammonium ions, of at least 6:1, a nd wherein the ratio of the pigment volume concentration to the critical pigmen t volume concentration is smaller than 1.

Claims (16)

1. A composition for coating a metal substrate which is intended to be fabricated and overcoated, said composition comprising a silica binder, characterized in that the ratio of the pigment volume concentration to the critical pigment volume concentration of said composition is smaller than 1, and in that the binder comprises an aqueous silica sol and, optionally, a minor amount of alkali metal silicate, with the silica and/or silicate particles having an average size larger than 10 nm, and in that said binder has a SiO2/M2O mole ratio of at least 6:1, wherein M represents the total of alkali metal and ammonium ions.
2. A coating composition according to claim 1, characterized in that the pigment volume concentration is between 40 and 55%.
3. A coating composition according to claim 1 or 2, characterized in that the binder is a silica sol of SiO2/M2O mole ratio at least 25:1.
4. A coating composition according to any one of claims 1 to 3, characterized in that the binder comprises colloidal silica particles with an average particle size between 10 and 22 nm.
5. A coating composition according to claim 4, characterized in that the binder comprises colloidal silica particles with an average particle size between 10 and 16 nm.
6. A coating composition according to claim 5, characterized in that the aqueous silica sol has a pH in the range 9.5 to 11.
7. A coating composition according to any one of claims 1 to 6, characterized in that the primer coating further comprises 0 to 30% by weight of an organic resin, based on solid binder.
8. A coating composition according to claim 7, characterized in that the primer coating further comprises 10-20% by weight of an organic resin, based on solid binder.
9. A coating composition according to any one of claims 1 to 8, characterized in that the binder comprises an alumina surface-modified aqueous silica sol.
10. A coating composition according to claim 9, characterized in that the binder comprises 0.05 to 2.5 wt.% of alumina, calculated as the percentage by weight of Al2O3, based on the silica sol particles in the composition.
11. A coating composition according to any one of claims 1 to 10, characterized in that it is a water based shop primer.
12. A coating composition according to any one of claims 1 to 11, characterized in that the coating further comprises zinc powder and/or a zinc alloy.
13. Water based shop primer for the coating of steel substrates which are intended to be fabricated and overcoated, said composition having a solid content of 20 - 40% by volume, wherein the ratio of the pigment volume concentration to the critical pigment volume concentration is smaller than 1, comprising:
- an aqueous silica sol binder having a SiO2/M2O mole ratio of at least 6:1 and a pH between 9.5 and 11, wherein M represents the total of alkali metal and ammonium ions and wherein the optionally alumina modified silica particles have an average size between 10 nm and 16 nm, - 10 - 55% by volume of the coating on a dry film basis of zinc powder and/or a zinc alloy having a mean particle size in the range 2 to 12 µm, - 0 - 35% by weight, based on solid binder, of an organic resin, - 0 - 30% by weight, based on solid binder, of a silane coupling agent, - optionally non-zinc pigment(s), and - optionally a pot life extender.
14. A process for primer coating a steel substrate wherein the metal is primer coated with a coating composition according to any one of claims 1-12 which is prepared using a silica sol of which the pH is adjusted to pH 9.5-11.
15. A process for primer coating a steel substrate wherein the metal is primer coated with a coating composition according to any one of claims 1-12 and wherein after the primer coating has dried to the extent that it is touch dry, it is optionally treated with a film strengthening solution.
16. A process for primer coating a steel substrate wherein the metal is primer coated with a coating composition according to any one of claims 1-12 and wherein after the primer coating has dried to the extent that it is touch dry, the coated substrate is immersed in water or alternatively kept in an atmosphere with a relative humidity of of least 50%.
CA2460083A 2001-09-11 2002-08-13 Coating composition for metal substrates Expired - Lifetime CA2460083C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
PCT/EP2001/010552 WO2002022745A1 (en) 2000-09-13 2001-09-11 Primer coating of steel
EPEPO1/10552 2001-09-11
PCT/EP2001/010635 WO2002022746A1 (en) 2000-09-13 2001-09-13 Primer coating of steel
EPEP/0110635 2001-09-13
EP02250068.0 2002-01-07
EP02250068 2002-01-07
PCT/EP2002/009119 WO2003022940A1 (en) 2001-09-11 2002-08-13 Coating composition for metal substrates

Publications (2)

Publication Number Publication Date
CA2460083A1 true CA2460083A1 (en) 2003-03-20
CA2460083C CA2460083C (en) 2012-04-03

Family

ID=26069223

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2460083A Expired - Lifetime CA2460083C (en) 2001-09-11 2002-08-13 Coating composition for metal substrates

Country Status (13)

Country Link
US (1) US20050031790A1 (en)
EP (1) EP1425353B1 (en)
JP (1) JP4250080B2 (en)
CN (1) CN1245462C (en)
AT (1) ATE307175T1 (en)
BR (1) BR0212424B1 (en)
CA (1) CA2460083C (en)
DE (1) DE60206784T2 (en)
DK (1) DK1425353T3 (en)
ES (1) ES2251615T3 (en)
MX (1) MXPA04002292A (en)
RU (1) RU2293750C2 (en)
WO (1) WO2003022940A1 (en)

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CN103360837B (en) * 2012-03-31 2015-12-09 攀钢集团攀枝花钢铁研究院有限公司 A kind of metal protection coating and uses thereof and hot-dip metal plated material
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RU2538878C2 (en) * 2012-11-26 2015-01-10 Общество с ограниченной ответственностью "Инновации. Технологии. Производство" Composition for application of anticorrosion coating
KR101377627B1 (en) 2012-12-31 2014-03-25 윤경민 Coating composition with ceramic for eliminating surface exfoliation formation of metallic material by high temperature oxidation
RU2710814C2 (en) * 2013-03-16 2020-01-14 Прк-Десото Интернэшнл, Инк. Sol-gel corrosion inhibiting compositions
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Also Published As

Publication number Publication date
ATE307175T1 (en) 2005-11-15
WO2003022940A1 (en) 2003-03-20
CN1245462C (en) 2006-03-15
DE60206784D1 (en) 2006-03-02
DK1425353T3 (en) 2006-02-13
ES2251615T3 (en) 2006-05-01
JP4250080B2 (en) 2009-04-08
RU2293750C2 (en) 2007-02-20
EP1425353B1 (en) 2005-10-19
JP2005510584A (en) 2005-04-21
BR0212424A (en) 2004-08-03
MXPA04002292A (en) 2004-06-29
BR0212424B1 (en) 2012-07-24
RU2004110933A (en) 2005-10-10
WO2003022940A8 (en) 2003-12-31
DE60206784T2 (en) 2006-07-06
CA2460083C (en) 2012-04-03
CN1553941A (en) 2004-12-08
US20050031790A1 (en) 2005-02-10
EP1425353A1 (en) 2004-06-09

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