Patent US3880947A successfully refreshed from Google Patents.
US3880947A
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Powder coating compositions including carboxyl terminated polyamide crosslinking agents
Assignee: EIDP Inc
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Filing: 1973-12-18
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Granted: 1975-04-29
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Expires: 1993-12-18
Abstract
Abstract Powder coating compositions are disclosed which, exclusive of pigments and nonreactive components, comprise a coreactive mixture of: (A) a copolymer of between about 8 and about 30 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and between about 92 and about 70 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature in the range of 40*C. to 90*C. and a number average molecular weight (Mn) of between about 2500 and about 8500; and (B) a carboxyl terminated polyamide crosslinking agent in the amount of between about 0.8 and about 1.2 carboxyl groups for each epoxy group in the copolymer.
Inventors
- 👤 Santokh S Labana
- 👤 Yun-Feng Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:15
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4246; C08G59/4269; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/068; C09D157/00; C09D157/06; C09D157/10; C09D177/00; C08L; C08L77/00; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/17; Y10S525/00; Y10S525/934
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
128 words
A POWDER COATING COMPOSITION WHICH, EXCULSIVE OF PIGMENTS AND OTHER NON-REACTIVE COMPONENTS, COMPRISES A COREACTABLE MIXTURE OF: A. A COPOLYMER OF ABOUT 8 TO ABOUT 30 WEIGHT PERCENT OF A GLYCIDYL ESTER OF A MONOETHYLENICALLY UNSATURATED ACID AND ABOUT 92 TO ABOUT 70 WEIGHT PERCENT OF OTHER MONOETHYLENICALLY UNSATURATED MONOMERS, SAID COPOLYMER HAVING A GLASS TRANSITION TEMPERATURE IN THE RANGE OF 40*C TO 90*C AND A MOLECULAR WEIGHT (MN) IN THE RANGE OF 2500 TO 8500; B. A CARBOXYL TERMINATED POLYAMIDE IN THE AMOUNT OF BETWEEN ABOUT 0.8 AND ABOUT 1.2 CARBOXYL GROUPS FOR EACH EPOXY GROUP IN THE COPOLYMER; AND C. FROM ABOUT 0.05 WEIGHT PERCENT TO ABOUT 4.0 WEIGHT PERCENT BASED ON THE TOTAL WEIGHT OF THE TOTAL COATING COMPOSITION OF A POLYMERIC FLOW CONTROL AGENT.
Claim 2
Dependent Claim
128 words
A POWDER COATING COMPOSITION WHICH, EXCULSIVE OF PIGMENTS AND OTHER NON-REACTIVE COMPONENTS, COMPRISES A COREACTABLE MIXTURE OF: A. A COPOLYMER OF ABOUT 8 TO ABOUT 30 WEIGHT PERCENT OF A GLYCIDYL ESTER OF A MONOETHYLENICALLY UNSATURATED ACID AND ABOUT 92 TO ABOUT 70 WEIGHT PERCENT OF OTHER MONOETHYLENICALLY UNSATURATED MONOMERS, SAID COPOLYMER HAVING A GLASS TRANSITION TEMPERATURE IN THE RANGE OF 40*C TO 90*C AND A MOLECULAR WEIGHT (MN) IN THE RANGE OF 2500 TO 8500; B. A CARBOXYL TERMINATED POLYAMIDE IN THE AMOUNT OF BETWEEN ABOUT 0.8 AND ABOUT 1.2 CARBOXYL GROUPS FOR EACH EPOXY GROUP IN THE COPOLYMER; AND C. FROM ABOUT 0.05 WEIGHT PERCENT TO ABOUT 4.0 WEIGHT PERCENT BASED ON THE TOTAL WEIGHT OF THE TOTAL COATING COMPOSITION OF A POLYMERIC FLOW CONTROL AGENT.
Claim 3
Dependent Claim
59 words
A powder coating composition in accordance with claim 1 wherein said copolymer has a glass transition temperature between about 50*C. and about 80*C. and a molecular weight (Mn) between about 3000 and about 6500, said glycidyl ester being present in said copolymer from at least about 10 percent by weight to no more than about 25 percent by weight.
Claim 4
Dependent Claim
2 words
aromatic groups
Claim 5
Dependent Claim
2 words
aromatic groups
Claim 6
Dependent Claim
2 words
heterocyclic groups
Claim 7
Dependent Claim
2 words
heterocyclic groups
Claim 8
Dependent Claim
62 words
A powder coating composition in accordance with claim 1 wherein said copolymer has a glass transition temperature between about 55*C. and about 70*C. and a molecular weight (Mn) in the range of about 3000 to about 4000, said glycidyl ester being present in said copolymer from at least about 12 percent by weight to no more than about 20 percent by weight.
Claim 9
Dependent Claim
25 words
A powder coating composition in accordance with claim 1 wherein said carboxyl terminated polyamide has a molecular weight (Mn) between about 500 and about 3,000.
Claim 10
Dependent Claim
30 words
alicyclic groups; and C. from about 0.05 weight percent to about 4.0 weight percent based on the total weight of the total coating composition of a polymeric flow control agent.
Claim 11
Dependent Claim
30 words
alicyclic groups; and C. from about 0.05 weight percent to about 4.0 weight percent based on the total weight of the total coating composition of a polymeric flow control agent.
Claim 12
Dependent Claim
25 words
A powder coating composition in accordance with claim 1 wherein said carboxyl terminated polyamide has a molecular weight (Mn) between about 700 and about 1500.
Claim 13
Dependent Claim
22 words
A powder coating composition in accordance with claim 1 wherein said monoethylenically unsaturated monomers consist essentially of monofunctional, alpha-beta olefinically unsaturated monomers.
Claim 14
Dependent Claim
18 words
A powder coating composition in accordance with claim 6 wherein said monofunctional, alpha-beta olefinically unsaturated monomers are acrylates.
Claim 15
Dependent Claim
107 words
A powder coating composition which, exclusive of pigments and other non-reactive components, comprises a coreactable mixture of: A. a copolymer of about 8 to about 30 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 92 to about 70 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature between about 40*C and about 90*C and a molecular weight (Mn) between about 2500 and about 8500; B. a carboxyl terminated polyamide in the amount of between about 0.8 and about 1.2 carboxyl groups for each epoxy group in the copolymer, and said carboxyl terminated polyamide having the general structure:
Claim 16
Dependent Claim
107 words
A powder coating composition which, exclusive of pigments and other non-reactive components, comprises a coreactable mixture of: A. a copolymer of about 8 to about 30 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 92 to about 70 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature between about 40*C and about 90*C and a molecular weight (Mn) between about 2500 and about 8500; B. a carboxyl terminated polyamide in the amount of between about 0.8 and about 1.2 carboxyl groups for each epoxy group in the copolymer, and said carboxyl terminated polyamide having the general structure:
Claim 17
Dependent Claim
59 words
A powder coating composition in accordance with claim 8 wherein said copolymer has a glass transition temperature between about 50*C. and about 80*C. and a molecular weight (Mn) between about 3000 and about 6500, said glycidyl ester being present in said copolymer from at least about 10 percent by weight to no more than about 25 percent by weight.
Claim 18
Dependent Claim
62 words
A powder coating composition in accordance with claim 8 wherein said copolymer has a glass transition temperature between about 55*C. and about 70*C. and a molecular weight (Mn) in the range of about 3000 to about 4000, said glycidyl ester being present in said copolymer from at least about 12 percent by weight to no more than about 20 percent by weight.
Claim 19
Dependent Claim
25 words
A powder coating composition in accordance with claim 8 wherein said carboxyl terminated polyamide has a molecular weight (Mn) between about 500 and about 3,000.
Claim 20
Dependent Claim
25 words
A powder coating composition in accordance with claim 8 wherein said carboxyl terminated polyamide has a molecular weight (Mn) between about 700 and about 1500.
Claim 21
Dependent Claim
24 words
A powder coating composition in accordance with claim 8 wherein said carboxyl terminated polyamide is prepared by reacting a dicarboxylic acid and a diamine.
Claim 22
Dependent Claim
24 words
A powder coating composition in accordance with claim 8 wherein said carboxyl terminated polyamide is prepared by reacting a diacyl halide and a diamine.
Claim 23
Dependent Claim
24 words
A powder coating composition in accordance with claim 8 wherein said carboxyl terminated polyamide is prepared by reacting a dicarboxylic anhydride and a diamine.
Claim 24
Dependent Claim
22 words
A powder coating composition in accordance with claim 8 wherein said monoethylenically unsaturated monomers consist essentially of monofunctional, alpha-beta olefinically unsaturated monomers.
Claim 25
Dependent Claim
18 words
A powder coating composition in accordance with claim 16 wherein said monofunctional, alpha-beta olefinically unsaturated monomers are acrylates.
Claim 26
Dependent Claim
25 words
A powder coating composition in accordance with claim 17 wherein said acrylates consist essentially of esters of C1-C8 monohydric alcohols and acrylic or methacrylic acid.
Claim 27
Dependent Claim
41 words
A powder coating composition in accordance with claim 16 wherein said monofunctional, alpha-beta olefinically unsaturated monomers consist essentially of a mixture of acrylates and vinyl hydrocarbons, said acrylates comprising greater than 50 weight percent of the monomer content of the copolymer.
Claim 28
Dependent Claim
30 words
A powder coating composition in accordance with claim 19 wherein said vinyl hydrocarbons are selected from the group consisting of styrene, alpha methyl styrene, vinyl toluene, t-butyl styrene and chlorostyrene.
Claim 29
Dependent Claim
34 words
A powder coating composition in accordance with claim 16 wherein said copolymer includes up to 35 weight percent of modifying monomers selected from the group consisting of vinyl chloride, acrylonitrile, methacrylonitrile and vinyl acetate.
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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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |