US4385097A
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US
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Anticorrosive coating composition
Assignee: Kansai Paint Co Ltd
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Filing: 1978-10-31
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Granted: 1983-05-24
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Expires: 1998-10-31
Abstract
Abstract An anticorrosive coating composition comprising (i) an aqueous medium, and dispersed therein, (ii) a water-soluble, film-forming and crosslinkable resin having a hydroxyl group and a proton-free onium salt radical and (iii) a chelate compound of titanium or zirconium.
Inventors
- 👤 Osamu Isozaki
- 👤 Shun-ichi Kodama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:01
CPC Classifications
C; C09; C09D; C09D175/00; C09D175/04; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/70; C08K; C08K5/00; C08K5/0091; C08K5/04; C08K5/05; C08K5/07; C08K5/09; C08K5/16; C08K5/17; C09D133/00; C09D133/04; C09D133/14; C09D201/00; C09D201/02; C09D5/00; C09D5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
160 words
An anticorrosive coating composition having a solids content of 5 to 70% by weight, and comprising: (i) an aqueous medium, and dispersed therein, (ii) 3 to 30% by weight of a water-soluble, film-forming and crosslinkable resin having at least 0.5 mole of hydroxyl group per kilogram of the resin and at least 0.1 mole of proton-free onium salt radical per kilogram of the resin, said proton-free onium salt radical having a central element selected from the group consisting of nitrogen, phosphorus and sulfur, said resin being free of carboxyl, phosphate, primary amino and secondary amino groups, and (iii) 1 to 30 parts by weight of a chelate compound of titanium or zirconium per 100 parts by weight of the resin, wherein the chelate compound is a chelate compound of a alkyl titanate or alkyl zirconate with a chelating agent selected from the group consisting of tie (lower alkanol) amines, acetoacetic acid esters, diketone alcohols, acylketones, glycols and hydroxy carboxylic acids.
Claim 2
Dependent Claim
160 words
An anticorrosive coating composition having a solids content of 5 to 70% by weight, and comprising: (i) an aqueous medium, and dispersed therein, (ii) 3 to 30% by weight of a water-soluble, film-forming and crosslinkable resin having at least 0.5 mole of hydroxyl group per kilogram of the resin and at least 0.1 mole of proton-free onium salt radical per kilogram of the resin, said proton-free onium salt radical having a central element selected from the group consisting of nitrogen, phosphorus and sulfur, said resin being free of carboxyl, phosphate, primary amino and secondary amino groups, and (iii) 1 to 30 parts by weight of a chelate compound of titanium or zirconium per 100 parts by weight of the resin, wherein the chelate compound is a chelate compound of a alkyl titanate or alkyl zirconate with a chelating agent selected from the group consisting of tie (lower alkanol) amines, acetoacetic acid esters, diketone alcohols, acylketones, glycols and hydroxy carboxylic acids.
Claim 3
Dependent Claim
137 words
The composition of claim 1 wherein the proton-free onium salt radical is a quaternary onium salt radical of the formula ##STR22## wherein Q 1 represents a nitrogen or phosphorus atom; R 1 , R 2 and R 3 , independently from each other, represent an organic group; or when Q 1 is a nitrogen atom, R 1 , R 2 and R 3 together may form a nitrogen-containing heterocyclic ring together with the nitrogen atom; and Y 1 .sup.⊖ represents an anion, or a tertiary onium salt radical of the formula ##STR23## wherein Q 2 represents a sulfur atom; R 4 and R 5 , independently from each other, represent an organic group, or R 4 and R 5 together may form a heterocyclic ring together with the sulfur atom; and Y 2 .sup.⊖ represents an anion.
Claim 4
Dependent Claim
91 words
The coating composition of claim 1 wherein the proton-free onium salt radical is a quaternary ammonium salt radical of the formula ##STR24## wherein R 11 , R 21 and R 31 , independently from each other, represent an organic group, or R 11 , R 21 and R 31 together may form a nitrogen-containing heteroaromatic ring together with the nitrogen atom to which they are bonded, the total carbon content of R 11 , R 21 and R 31 being up to 25, and Y 11 .sup.⊖ represents a halogen ion.
Claim 5
Dependent Claim
81 words
The composition of claim 1 wherein the proton-free onium salt radical is a tertiary sulfonium salt radical of the formula ##STR25## wherein R 41 and R 51 , independently from each other, represent an organic group, or R 41 and R 51 together may form a sulfur-containing heterocyclic ring together with the sulfur atom to which they are bonded, the total carbon content of R 41 and R 51 being up to 25, and Y 21 .sup.⊖ represents a halogen ion.
Claim 6
Dependent Claim
27 words
The composition of claim 1 wherein the resin contains the proton-free onium salt radical in an amount of the 0.1 to 2 moles per kilogram of resin.
Claim 7
Dependent Claim
21 words
The composition of claim 1 wherein the resin contains 1 to 5 moles of hydroxyl groups per kilogram of the resin.
Claim 8
Dependent Claim
18 words
The composition of claim 1 wherein the resin has a number average molecular weight of at most 100,000.
Claim 9
Dependent Claim
33 words
The composition of claim 1 wherein the resin is derived from a member selected from the group consisting of polyamide resins, acrylic resins, polyester resins, polyurethane resins, epoxy resins and modified diene resins.
Claim 10
Dependent Claim
27 words
The composition of claim 1 wherein the amount of the chelate compound is 2 to 10 parts by weight per 100 parts by weight of the resin.
Claim 11
Independent Claim
196 words
A method for forming a coating having corrosion resistance on the surface of a metal substrate which comprises (A) applying to the substrate surface a coating composition having a solids content of 5 to 70% by weight, and comprising: (i) an aqueous medium, and dispersed therein, (ii) 3 to 30% by weight of a water-soluble, film-forming and crosslinkable resin having at least 0.5 mole of hydroxyl group per kilogram of the resin and at least 0.1 mole of proton-free onium salt radical per kilogram of the resin, said proton-free onium salt radical having a central element selected from the group consisting of nitrogen, phosphorus and sulfur, said resin being free of carboxyl, phosphate, primary amino and secondary amino groups, and (iii) 1 to 30 parts by weight of a chelate compound of titanium or zirconium per 100 parts by weight of the resin wherein the chelate compound is a chelate compound of an alkyl titanate or alkyl zirconate with a chelating agent selected from the group consisting of tri (lowere alkanol) amines, acetoacetic acid esters, diketone alcohols, acylketones, glycols and hydroxy carboxylic acids, and (B) baking the coating at a temperature of at least 40° C.
Claim 12
Independent Claim
196 words
A method for forming a coating having corrosion resistance on the surface of a metal substrate which comprises (A) applying to the substrate surface a coating composition having a solids content of 5 to 70% by weight, and comprising: (i) an aqueous medium, and dispersed therein, (ii) 3 to 30% by weight of a water-soluble, film-forming and crosslinkable resin having at least 0.5 mole of hydroxyl group per kilogram of the resin and at least 0.1 mole of proton-free onium salt radical per kilogram of the resin, said proton-free onium salt radical having a central element selected from the group consisting of nitrogen, phosphorus and sulfur, said resin being free of carboxyl, phosphate, primary amino and secondary amino groups, and (iii) 1 to 30 parts by weight of a chelate compound of titanium or zirconium per 100 parts by weight of the resin wherein the chelate compound is a chelate compound of an alkyl titanate or alkyl zirconate with a chelating agent selected from the group consisting of tri (lowere alkanol) amines, acetoacetic acid esters, diketone alcohols, acylketones, glycols and hydroxy carboxylic acids, and (B) baking the coating at a temperature of at least 40° C.
Claim 13
Dependent Claim
11 words
A coated metal substrate prepared by the method of claim 10.
References Cited (Backward Citations)
US4154618A
Cited
US4071428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |