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US4477530A
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Heat-hardenable binder mixture
Assignee: BASF Coatings GmbH
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Filing: 1982-01-26
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Granted: 1984-10-16
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Expires: 2002-01-26
Abstract
Abstract A 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 crosslinking agent based on an organic compound which contains at least 2 β-hydroxyalkyl ester groups. The binder mixture can additionally contain pigments, fillers, crosslinking catalysts, corrosion inhibitors and other paint 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 stoving.
Inventors
- 👤 Horst Diefenbach
- 👤 Michael Geist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:52
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D201/00; C09D201/02; 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; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
66 words
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 stoving, said coating agent containing a binder mixture, the improvement comprising said binder mixture comprising: (A) an organic resin having amino groups; and (B) a cross-linking agent based on an organic compound which contains at least 2 β-hydroxyalkyl ester groups.
Claim 2
Dependent Claim
66 words
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 stoving, said coating agent containing a binder mixture, the improvement comprising said binder mixture comprising: (A) an organic resin having amino groups; and (B) a cross-linking agent based on an organic compound which contains at least 2 β-hydroxyalkyl ester groups.
Claim 3
Dependent Claim
13 words
The process of claim 1, wherein said amino groups are primary amino groups.
Claim 4
Dependent Claim
13 words
The process of claim 1, wherein said amino groups are secondary amino groups.
Claim 5
Dependent Claim
15 words
The process of claim 1, wherein said amino groups are primary and secondary amino groups.
Claim 6
Dependent Claim
15 words
The process of claim 1, wherein said amino groups are primary and tertiary amino groups.
Claim 7
Dependent Claim
15 words
The process of claim 1, wherein said amino groups are secondary and tertiary amino groups.
Claim 8
Dependent Claim
16 words
The process of claim 1, wherein said amino groups are primary, secondary, and tertiary amino groups.
Claim 9
Dependent Claim
30 words
The process of claim 1, wherein said binder mixture, in addition to components (A) and (B), contains as component (C) pigments, fillers, cross-linking catalysts, corrosion inhibitors and other paint auxiliaries.
Claim 10
Dependent Claim
32 words
The process of claim 8, wherein the proportion of component (A) is 50-95% by weight, component (B) is 5-50% by weight, the total amount of the components (A) and (B) being 100%.
Claim 11
Dependent Claim
16 words
The process of claim 9, wherein component (A) has a number average molecular weight of 500-20,000.
Claim 12
Dependent Claim
16 words
The process of claim 10, wherein component (B) has a number average molecular weight of 200-10,000.
Claim 13
Dependent Claim
110 words
The process of claim 11, wherein component (B) is a polyacrylate resin prepared from the following monomers: (a) 10-50% by weight of an alkyl acrylate having 1 to 18 carbon atoms in the alkyl radical, an alkyl methacrylate having 2 to 18 carbon atoms in the alkyl radical or a mixture 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 or mixtures thereof; and (d) 2-35% by weight of a β-hydroxyalkyl acrylate, β-hydroxyalkyl methacrylate, another olefinic, unsaturated polymerizable compound containing β-hydroxyalkyl ester groups or mixtures thereof, the total amount of the constituents (a), (b), (c) and (d) being 100%.
Claim 14
Dependent Claim
17 words
The process of claim 12, wherein the coating agent is present in a finely divided, solid form.
Claim 15
Dependent Claim
18 words
The process of claim 13, wherein the coating agent is applied by using an electrostatic powder spray device.
Claim 16
Dependent Claim
16 words
The process of claim 12, wherein said binder mixture is present dissolved in an organic solvent.
Claim 17
Dependent Claim
18 words
The process of claim 15, wherein the coating agent is applied by spraying, dipping, flowing, rolling or knife-coating.
Claim 18
Dependent Claim
60 words
The process of claim 1, wherein an electrically conductive substrate is dipped into an aqueous bath of the coating agent which is at least partially neutralized by acid and connected as the cathode, the film is deposited on the substrate by means of direct current, the substrate is removed from the bath and the film is hardened by said stoving.
Claim 19
Dependent Claim
40 words
In a substrate coated with a binder mixture, the improvement comprising said binder mixture comprising: (A) an organic resin having amino groups; and (B) a cross-linking agent based on an organic compound which contains at least 2 β-hydroxyalkyl ester groups.
Claim 20
Dependent Claim
40 words
In a substrate coated with a binder mixture, the improvement comprising said binder mixture comprising: (A) an organic resin having amino groups; and (B) a cross-linking agent based on an organic compound which contains at least 2 β-hydroxyalkyl ester groups.
Claim 21
Dependent Claim
31 words
The coated article of claim 18, wherein said binder mixture, in addition to components (A) and (B), contains as component (C) pigments, fillers, cross-linking catalysts, corrosion inhibitors and other paint auxiliaries.
Claim 22
Dependent Claim
33 words
The coated article of claim 19, wherein the proportion of component (A) is 50-95% by weight, component (B) is 5-50% by weight, the total amount of the components (A) and (B) being 100%.
Claim 23
Dependent Claim
17 words
The coated article of claim 20, wherein component (A) has a number average molecular weight of 500-20,000.
Claim 24
Dependent Claim
17 words
The coated article of claim 21, wherein component (B) has a number average molecular weight of 200-10,000.
Claim 25
Dependent Claim
111 words
The coated article of claim 22, wherein component (B) is a polyacrylate resin prepared from the following monomers: (a) 10-50% by weight of an alkyl acrylate having 1 to 18 carbon atoms in the alkyl radical, an alkyl methacrylate having 2 to 18 carbon atoms in the alkyl radical or a mixture 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 or mixtures thereof; and (d) 2-35% by weight of a β-hydroxyalkyl acrylate, β-hydroxyalkyl methacrylate, another olefinic, unsaturated polymerizable compound containing β-hydroxyalkyl ester groups or mixtures thereof, the total amount of the constituents (a), (b), (c) and (d) being 100%.
Claim 26
Dependent Claim
18 words
The coated article of claim 23, wherein said binder mixture is present in a finely divided, solid form.
Claim 27
Dependent Claim
52 words
The process of claim 1, wherein the β-hydroxyalkyl ester groups of component (B) react with the amino groups of component (A) to form an amide bond and the basic nitrogen of the amino group of the resin of component (A) is converted in the stoved film into amide nitrogen of neutral pH.
Claim 28
Dependent Claim
53 words
The coated article of claim 18, wherein the β-hydroxyalkyl ester groups of component (B) react with the amino groups of component (A) to form an amide bond and the basic nitrogen of the amino group of the resin of component (A) is converted in the stoved film into amide nitrogen of neutral pH.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |