Patent US4254235A successfully refreshed from Google Patents.
US4254235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting powder paints
Assignee: Vibrantz Corp
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Filing: 1979-06-18
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Granted: 1981-03-03
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Expires: 1999-06-18
Abstract
Abstract The invention pertains to thermosetting powder paints adapted to fuse and thermoset upon exposure to heat. The powder paint is based upon a two-component binder system comprising a polymeric glycoluril adapted to cross-link a matrix polymer having reactive hydroxyl, carboxyl, or amide groups.
Inventors
- 👤 Edward T. Turpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/20; C09D161/32; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/10; C08G12/12; C08G12/40; C08G12/42; C09D161/22; C09D161/24; C09D201/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
146 words
A thermosetting powder coating composition adapted to be applied to a substrate as a powder and heat fused to provide a cross-linked thermoset continuous surface coating, comprising on a weight basis: between 30% and 90% of a reactive matrix polymer having reactive groups selected from hydroxyl, carboxyl, and amide groups; between 10% and 70% of a polymeric glycoluril having reactive methylol and/or alkoxy methyl groups for cross-linking with said reactive groups on said matrix polymer upon exposure to heat, said polymeric glycoluril having a molecular weight between about 500 and 5000 and being a condensation polymer of tetra-alkoxy-methyl glycoluril and/or tetra-methylol glycoluril containing at least 3 polymeric units selected from a self-condensate glycouril polymer containing at least 3 glycoluril units or a diol condensate polymer containing at least 2 glycoluril units condensed with diol; and said powder coating having a tack temperature greater tha 70° C.
Claim 2
Dependent Claim
146 words
A thermosetting powder coating composition adapted to be applied to a substrate as a powder and heat fused to provide a cross-linked thermoset continuous surface coating, comprising on a weight basis: between 30% and 90% of a reactive matrix polymer having reactive groups selected from hydroxyl, carboxyl, and amide groups; between 10% and 70% of a polymeric glycoluril having reactive methylol and/or alkoxy methyl groups for cross-linking with said reactive groups on said matrix polymer upon exposure to heat, said polymeric glycoluril having a molecular weight between about 500 and 5000 and being a condensation polymer of tetra-alkoxy-methyl glycoluril and/or tetra-methylol glycoluril containing at least 3 polymeric units selected from a self-condensate glycouril polymer containing at least 3 glycoluril units or a diol condensate polymer containing at least 2 glycoluril units condensed with diol; and said powder coating having a tack temperature greater tha 70° C.
Claim 3
Dependent Claim
24 words
The powder paint composition of claim 1 wherein the polymeric glycoluril is a copolymer containing by weight between about 10% and 70% copolymerized diol.
Claim 4
Dependent Claim
17 words
The powder paint composition of claim 1 wherein the polymeric glycoluril is a homopolymer of tetra-alkoxy-methyl glycoluril.
Claim 5
Dependent Claim
17 words
The powder paint composition of claim 1 wherein the polymeric glycoluril is a homopolymer of tetra-methylol glycoluril.
Claim 6
Dependent Claim
20 words
The powder paint composition of claim 1 wherein the polymeric glycoluril is a copolymer of tetra-alkoxy-methyl glycoluril and tetra-methylol glycoluril.
Claim 7
Dependent Claim
27 words
The powder paint composition of claim 1 wherein the composition comprises by weight between 70% and 90% reactive matrix polymer and between 10% and 30% polymeric glycoluril.
Claim 8
Dependent Claim
147 words
In a process of producing a thermosetting powder paint composition containing a reactive matrix polymer having reactive groups of hydroxy, carboxy, or amide adapted to be cross-linked upon heat fusing the powder paint, the improvement consisting of the step: providing in said powder paint composition a cross-linking polymer for cross-linking with the reactive groups of said matrix polymer, said cross-linking polymer produced by condensation polymerization of a glycoluril selected from tetra-alkoxy-methyl glycoluril or a tetra-methylol glycoluril to produce a polymeric glycoluril having a molecular weight between about 500 and 5000 and containing by weight between 4% and 40% alkoxy-methyl and/or methylol groups for cross-linking with the reactive groups on said matrix polymer, said polymeric glycol containing at least 3 polymeric units selected from a self-condensate glycoluril polymer containing at least 3 glycoluril units or a diol condensate polymer containing at least 2 glycoluril units condensed with diol.
Claim 9
Dependent Claim
147 words
In a process of producing a thermosetting powder paint composition containing a reactive matrix polymer having reactive groups of hydroxy, carboxy, or amide adapted to be cross-linked upon heat fusing the powder paint, the improvement consisting of the step: providing in said powder paint composition a cross-linking polymer for cross-linking with the reactive groups of said matrix polymer, said cross-linking polymer produced by condensation polymerization of a glycoluril selected from tetra-alkoxy-methyl glycoluril or a tetra-methylol glycoluril to produce a polymeric glycoluril having a molecular weight between about 500 and 5000 and containing by weight between 4% and 40% alkoxy-methyl and/or methylol groups for cross-linking with the reactive groups on said matrix polymer, said polymeric glycol containing at least 3 polymeric units selected from a self-condensate glycoluril polymer containing at least 3 glycoluril units or a diol condensate polymer containing at least 2 glycoluril units condensed with diol.
Claim 10
Dependent Claim
15 words
The process in claim 7 wherein the polymeric glycoluril is a homopolymer of tetra-alkoxy-methyl glycoluril.
Claim 11
Dependent Claim
15 words
The process in claim 7 wherein the polymeric glycoluril is a homopolymer of tetra-methyl glycoluril.
Claim 12
Dependent Claim
18 words
The process of claim 7 wherein the polymeric glycoluril is a copolymer of tetra-alkoxy-methyl glycoluril and tetra-methylol glycoluril.
References Cited (Backward Citations)
US3980733A
Cited
US3883462A
Cited
US3960983A
Cited
US3959405A
Cited
US4039496A
Cited
US4138528A
Cited
US4064191A
Cited
US4118437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |