US4581294A
Expired / Lapsed
US
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Heat-hardenable binder mixture
Assignee: BASF Farben und Fasern AG
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Filing: 1984-12-06
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Granted: 1986-04-08
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Expires: 2004-12-06
Abstract
Abstract The heat-hardenable binder mixture based on organic resins comprises an organic resin having primary and/or secondary and, if appropriate, also additional tertiary amino groups and a cross-linking agent based on an organic compound containing at least 2 carbalkoxymethyl groups. The binder mixture can additionally contain pigments, fillers, cross-linking catalysts, corrosion inhibitors and further finish auxiliaries. The binder mixture is used in a process for preparing coatings by applying a coating agent in the form of a film to a substrate and subsequently hardening the film by baking.
Inventors
- 👤 Michael Geist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:13
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/831; C08G59/00; C08G59/02; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08G59/50; C08G59/56; C08G59/58; C09D157/00; C09D157/06; C09D157/12; C09D5/00; C09D5/44; C09D5/4488; C09D5/4496; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31551; Y10T428/31605; Y10T428/31678; Y10T428/31681; Y10T428/31688; Y10T428/31692; Y10T428/31855
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
216 words
A process for preparing coatings by applying a coating composition to a substrate and subsequently hardening the resulting film by baking at temperatures of 130° to 200° C. for a period of 10 to 60 minutes to cross-link for film, wherein the coating composition contains a binder mixture of components neutralized to make them water-soluble or water-dispersible, comprising: (A) 50 to 95% by weight of an organic resin having the primary and/or secondary amino groups, a number average molecular weight of 500 to 20,000 and an amine equivalent weight of 150 to 7,500; and (B) 5 to 50% by weight of a cross-linking agent based on an organic compound containing at least two carbalkoxymethyl ester groups, said organic compound selected from the group consisting of polyester resins and compounds containing free carboxyl groups to which said carbalkoxymethyl can be attached, the total amount of components (A) and (B) being 100% and wherein said substrate is electrically conductive and is immersed in an aqueous bath which contains said coating which is at least partially neutralized by acid and additionally contains organic solvents, and said substrate is connected as the cathode, said film is deposited on said substrate by means of direct current, said substrate is removed from said bath and said film is hardened by said baking.
Claim 2
Dependent Claim
216 words
A process for preparing coatings by applying a coating composition to a substrate and subsequently hardening the resulting film by baking at temperatures of 130° to 200° C. for a period of 10 to 60 minutes to cross-link for film, wherein the coating composition contains a binder mixture of components neutralized to make them water-soluble or water-dispersible, comprising: (A) 50 to 95% by weight of an organic resin having the primary and/or secondary amino groups, a number average molecular weight of 500 to 20,000 and an amine equivalent weight of 150 to 7,500; and (B) 5 to 50% by weight of a cross-linking agent based on an organic compound containing at least two carbalkoxymethyl ester groups, said organic compound selected from the group consisting of polyester resins and compounds containing free carboxyl groups to which said carbalkoxymethyl can be attached, the total amount of components (A) and (B) being 100% and wherein said substrate is electrically conductive and is immersed in an aqueous bath which contains said coating which is at least partially neutralized by acid and additionally contains organic solvents, and said substrate is connected as the cathode, said film is deposited on said substrate by means of direct current, said substrate is removed from said bath and said film is hardened by said baking.
Claim 3
Dependent Claim
46 words
The process of claim 1, wherein said resulting film is baked at a temperature of 150° to 180° C. for 15 to 30 minutes and Component A has a number average molecular weight of 600 to 10,000 and an amine equivalent weight of 200 to 5,000.
Claim 4
Dependent Claim
30 words
The process of claim 1, wherein the mixture contains, in addition to Components A and B, a Component C comprising pigments, fillers, cross-linking catalysts, corrosion inhibitors and further finish auxiliaries.
Claim 5
Dependent Claim
18 words
The process of claim 1, wherein Component B has a number average molecular weight of 200 to 10,000.
Claim 6
Dependent Claim
102 words
The process of claim 4, wherein Component B is a polyacrylate resin of the following monomers: (a) 10-50% by weight of alkyl acrylate having 1 to 18 carbon atoms in the alkyl radical, alkyl methacrylate having 2-18 carbon atoms in the alkyl radical and mixtures thereof; (b) 0-60% by weight of methyl methacrylate; (c) 0-35% by weight of styrene, α-methylstyrene, o-chlorostyrene, p-chlorostyrene, p-tert.-butylstyrene, vinyltoluene, vinylcarbazole and mixtures thereof; and (d) 2-65% by weight of carbalkoxymethyl methacrylate, carbalkoxymethyl acrylate, another olefinic, unsaturated polymerizable compound containing carbalkoxymethyl ester groups and mixtures thereof, the total amount of constituents (a), (b), (c) and (d) being 100%.
Claim 7
Dependent Claim
167 words
A coated substrate from a coating composition containing a binder mixture of components neutralized to make them water-soluble of water-dispersible, comprising: (A) 50 to 95% by weight of an organic resin having primary and/or secondary amino groups, a number average molecular weight of 500 to 20,000 and an amine equivalent weight of 150 to 7,500; and (B) 5 to 50% by weight of a cross-linking agent based on an organic compound containing at least two carbalkoxymethyl ester groups, said organic compound selected from the group consisting of polyester resins and compounds containing free carboxyl groups to which said carbalkoxymethyl can be attached, the total amount of components (A) and (B) being 100%, wherein said binder mixture, after protonation with acid, is present in the form of an aqueous solution or dispersion and wherein said composition is applied by cathodic electrocoating and hardened to a resulting film by baking at temperatures of 130° to 200° C. for a period of 10 to 60 minutes to cross-link said film.
Claim 8
Dependent Claim
167 words
A coated substrate from a coating composition containing a binder mixture of components neutralized to make them water-soluble of water-dispersible, comprising: (A) 50 to 95% by weight of an organic resin having primary and/or secondary amino groups, a number average molecular weight of 500 to 20,000 and an amine equivalent weight of 150 to 7,500; and (B) 5 to 50% by weight of a cross-linking agent based on an organic compound containing at least two carbalkoxymethyl ester groups, said organic compound selected from the group consisting of polyester resins and compounds containing free carboxyl groups to which said carbalkoxymethyl can be attached, the total amount of components (A) and (B) being 100%, wherein said binder mixture, after protonation with acid, is present in the form of an aqueous solution or dispersion and wherein said composition is applied by cathodic electrocoating and hardened to a resulting film by baking at temperatures of 130° to 200° C. for a period of 10 to 60 minutes to cross-link said film.
Claim 9
Dependent Claim
47 words
The coated article of claim 6, wherein said resulting film is baked at a temperature of 150° to 180° C. for 15 to 30 minutes and Component A has a number average molecular weight of 600 to 10,000 and an amine equivalent weight of 200 to 5,000.
Claim 10
Dependent Claim
31 words
The coated article of claim 6, wherein the mixture contains, in addition to Components A and B, a Component C comprising pigments, fillers, cross-linking catalysts, corrosion inhibitors, and further finish auxiliaries.
Claim 11
Dependent Claim
19 words
The coated article of claim 6, wherein Component B has a number average molecular weight of 200 to 10,000.
Claim 12
Dependent Claim
103 words
The coated article of claim 9, wherein Component (B) is a polyacrylate resin of the following monomers: (a) 10-50% by weight of alkyl acrylate having 1 to 18 carbon atoms in the alkyl radical, alkyl methacrylate having 2-18 carbon atoms in the alkyl radical, and mixtures thereof; (b) 0-60% by weight of methyl methacrylate; (c) 0-35% by weight of styrene, -methylstyrene, o-chlorostyrene, p-chlorostyrene, p-tert.-butylstyrene, vinyltoluene, vinylcarbazole and mixtures thereof; and (d) 2-65% by weight of carbalkoxymethyl methacrylate, carbalkoxymethyl acrylate, another olefinic, unsaturated polymerizable compound containing carbalkoxymethyl ester groups and mixtures thereof, the total amount of constituents (a), (b), (c) and (d) being 100%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |