US4271277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing catalyst for thermosetting powder paints
Assignee: Vibrantz Corp
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Filing: 1979-10-09
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Granted: 1981-06-02
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Expires: 1999-10-09
Abstract
Abstract Thermosetting powder coatings comprising reactive polymers containing reactive carboxyl, hydroxyl, and/or amide groups and adapted to be cross-linked with aminoplast resins are substantially improved by the inclusion of at least about 0.25% by weight of a heat curing catalyst. The catalyst is an amine salt of cyclohexyl sulfamic acid.
Inventors
- 👤 Robert F. Golownia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:48
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/20; C09D201/00; C09D201/02; Y; Y10; Y10S; Y10S524/00; Y10S524/904; Y10S525/00; Y10S525/934
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A thermosetting powder paint composition containing reactive polymer having a reactive carboxyl, hydroxyl and/or amide groups adapted to be cross-linked upon heating with an aminoplast resin, the improvement comprising: said reactive polymer having a molecular weight between 1,000 and 10,000 and selected from epoxy polymer, polyester polymer, acrylic polymer, phenolic polymer, and vinyl polymer said reactive polymer having a melt temperature between 80° C. and 200° C.; and said powder paint composition containing by weight at least about 0.25% of a heat curing catalyst of an amine salt of cyclohexyl sulfamic acid, whereby said powder paint compositions are adapted to cure as a paint coating substantially free of surface pin-holes.
Claim 2
Dependent Claim
110 words
A thermosetting powder paint composition containing reactive polymer having a reactive carboxyl, hydroxyl and/or amide groups adapted to be cross-linked upon heating with an aminoplast resin, the improvement comprising: said reactive polymer having a molecular weight between 1,000 and 10,000 and selected from epoxy polymer, polyester polymer, acrylic polymer, phenolic polymer, and vinyl polymer said reactive polymer having a melt temperature between 80° C. and 200° C.; and said powder paint composition containing by weight at least about 0.25% of a heat curing catalyst of an amine salt of cyclohexyl sulfamic acid, whereby said powder paint compositions are adapted to cure as a paint coating substantially free of surface pin-holes.
Claim 3
Dependent Claim
18 words
The powder paint composition in claim 1 wherein the composition contains between 0.25% and 0.6% of said catalyst.
Claim 4
Dependent Claim
19 words
The powder paint composition in claim 1 wherein the catalyst is an alkyl amine salt of cyclohexyl sulfamic acid.
Claim 5
Dependent Claim
19 words
The powder paint composition in claim 1 wherein the catalyst is an aromatic amine salt of cyclohexyl sulfamic acid.
Claim 6
Dependent Claim
17 words
The powder paint composition in claim 1 wherein the catalyst is N,N,N',N'-tetrakis (hydroxypropyl)ethylene-diamine salt of sulfamic acid.
Claim 7
Dependent Claim
19 words
The powder paint composition in claim 1 wherein the catalyst is a triisopropanol amine salt of cyclohexyl sulfamic acid.
Claim 8
Dependent Claim
58 words
In a process of heat curing a thermosetting powder paint coating composition containing a reactive polymer adapted to be cross-linked with an aminoplast resin upon heating wherein the improvement comprises: the inclusion of between of at least about 0.25% by weight of heat curing catalyst of an amine salt of cyclohexyl sulfamic acid in the powder paint composition.
Claim 9
Dependent Claim
58 words
In a process of heat curing a thermosetting powder paint coating composition containing a reactive polymer adapted to be cross-linked with an aminoplast resin upon heating wherein the improvement comprises: the inclusion of between of at least about 0.25% by weight of heat curing catalyst of an amine salt of cyclohexyl sulfamic acid in the powder paint composition.
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) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |