Patent US4476261A successfully refreshed from Google Patents.
US4476261A
Expired / Lapsed
US
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Aqueous coating composition
Assignee: Axalta Coating Systems Germany GmbH and Co KG
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Filing: 1983-12-21
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Granted: 1984-10-09
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Expires: 2003-12-21
Abstract
Abstract Aqueous coating composition, particularly for electrophoretic coating, containing, related to the total quantity of the binders contained in the coating composition, (A) 40 to 90% by weight of polyesters containing carboxyl groups; (B) 5 to 30% by weight of block polyisocyanates; (C) 5 to 40% by weight of polymers containing glycidyl groups and containing free epoxy groups; and (D) 0 to 20% by weight of hydroxyl group-containing polyesters and/or acrylic resins, and a process for the preparation of these aqueous coating compositions. The invention also relates to the use of these coating compositions for the production of coatings, particularly by the electrophoretic coating process.
Inventors
- 👤 Hans-Peter Patzschke
- 👤 Eduard Ehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:54
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4473; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/4009; C08G18/42; C08G18/4263; C09D175/00; C09D175/04; C09D175/06
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
84 words
An aqueous anodic electrophoretic coating composition comprising: (A) 40 to 90% by weight polyesters containing carboxyl groups, having an acid number of 30 to 150, a hydroxyl number of 20 to 150 and a Patton alkyd constant of 0.9 to 1.2; (B) 5 to 30% by weight blocked polyisocyanates; (C) 5 to 40% by weight polymers containing glycidyl groups and free epoxy groups and (D) 0 to 20% by weight hydroxyl group containing compounds selected from the group consisting of polyesters and acrylic resins.
Claim 2
Dependent Claim
84 words
An aqueous anodic electrophoretic coating composition comprising: (A) 40 to 90% by weight polyesters containing carboxyl groups, having an acid number of 30 to 150, a hydroxyl number of 20 to 150 and a Patton alkyd constant of 0.9 to 1.2; (B) 5 to 30% by weight blocked polyisocyanates; (C) 5 to 40% by weight polymers containing glycidyl groups and free epoxy groups and (D) 0 to 20% by weight hydroxyl group containing compounds selected from the group consisting of polyesters and acrylic resins.
Claim 3
Dependent Claim
61 words
The aqueous coating composition of claim 1, wherein said polyesters are produced from compounds selected from the group consisting of dihydric and polyhydric aliphatic and cycloaliphatic saturated alcohols, aliphatic, cycloaliphatic and monocyclic aromatic dibasic and polybasic polycarboxylic acids, linear and branched, saturated and unsaturated, aliphatic and cycloaliphatic C 3 to C 20 monohydric alcohols and monobasic carboxylic acids and mixtures thereof.
Claim 4
Dependent Claim
38 words
The aqueous coating composition of claim 1, wherein the polymers containing glycidyl groups are polyglycidyl ethers containing 1,2-epoxide groups and, on average, more than oen epoxide group per molecule and have a molecular weight of more than 350.
Claim 5
Dependent Claim
17 words
The aqueous coating composition of claim 3, wherein said polyglycidyl ethers contain at least two epoxide groups.
Claim 6
Dependent Claim
19 words
The aqueous coating composition of claim 3, wherein said polyglycidyl ethers have a molecular weight of more than 850.
Claim 7
Dependent Claim
47 words
The aqueous coating composition of claim 3, wherein the polyglycidyl ethers comprise ethers of the general formula ##STR3## R'=--C n H 2n+1 , hydrogen or halogen; R"=--(CR' 2 ) n --; R"'=hydrogen, --C n H 2n+1 and/or --C(halogen) 3 ; m=0 to 8 and n=1 to 3.
Claim 8
Dependent Claim
22 words
An aqueous coating composition of claim 6, wherein R' is hydrogen R" is --CH 2 -- and R"' is --CH 3 .
Claim 9
Dependent Claim
40 words
An aqueous coating composition of claim 1, wherein said polymers containing glycidyl groups are polyglycidyl esters as polymerization products of 2 to 20% by weight of glycidyl (meth)acrylate and unsaturated monomers having a double bond as the only reactive group.
Claim 10
Dependent Claim
32 words
An aqueous coating composition of claim 8, wherein said polyglycidyl esters contain, on average, more than one epoxide group per molecule and have an average molecular with Mn of at least 500.
Claim 11
Dependent Claim
17 words
An aqueous coating composition of claim 9, wherein said polyglycidyl esters contain at least two epoxide groups.
Claim 12
Dependent Claim
16 words
An aqueous coating composition of claim 10, wherein said average molecular weight is at least 1000.
Claim 13
Dependent Claim
81 words
A process for the preparation of an aqueous coating composition comprising mixing: (A) carboxy group--containing polyesters, having an acid number of 30 to 150, a hydroxyl number 20 to 150 and a Patton alkyd constant of 0.9 to 1.2; (B) 5 to 30% by weight blocked polyisocyanates; (C) 5 to 40% by weight polymers containing glycidyl groups and free epoxy groups and (D) 0 to 20% by weight hydroxyl group-containing compounds selected from the group consisting of polyesters and acrylic resins.
Claim 14
Dependent Claim
81 words
A process for the preparation of an aqueous coating composition comprising mixing: (A) carboxy group--containing polyesters, having an acid number of 30 to 150, a hydroxyl number 20 to 150 and a Patton alkyd constant of 0.9 to 1.2; (B) 5 to 30% by weight blocked polyisocyanates; (C) 5 to 40% by weight polymers containing glycidyl groups and free epoxy groups and (D) 0 to 20% by weight hydroxyl group-containing compounds selected from the group consisting of polyesters and acrylic resins.
Claim 15
Dependent Claim
61 words
The process of claim 12, wherein said carboxyl group-containing polyesters are produced by reacting compounds from the group consisting of dihydric and polyhydric aliphatic and cycloaliphatic saturated alcohols, aliphatic, cycloaliphatic and monocyclic aromatic dibasic and polybasic polycarboxylic acids, linear and branched, saturated and unsaturated, aliphatic and cycloaliphatic C 2 to C 20 monohydric alcohols and monobasic carboxylic acids and mixtures thereof.
Claim 16
Dependent Claim
17 words
The process of claim 12, wherein said mixing of A, B, C and D is in solution.
Claim 17
Dependent Claim
18 words
The process of claim 12, wherein said mixing comprises mixing said C as a powder into said A.
Claim 18
Dependent Claim
18 words
The process of claim 12, wherein said mixing comprises dissolving said B and said C into said A.
Claim 19
Dependent Claim
17 words
The process of claim 16 further comprising dispersing the mixture of A, B and C in water.
Claim 20
Dependent Claim
28 words
The process of claim 12, wherein said mixing comprises forming aqueous dispersions of said B and said C and mixing said dispersions in a solution of said A.
Claim 21
Dependent Claim
34 words
The process of claim 12, wherein said mixing comprises forming concentrated solutions of said B and said C in organic, water-miscible solvents and mixing said concentrated solutions with an aqueous solution of said A.
Claim 22
Dependent Claim
18 words
A process of coating a substrate comprising the electrophoretic disposition of the aqueous coating composition of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |