US3880946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder paint compositions including carboxyl terminated polyether crosslinking agent
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 non-reactive 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 polyether crosslinking agent in an 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
2026-10-25 14:52
CPC Classifications
C; C09; C09D; C09D171/00; C09D171/02; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4246; C08G59/4269; C08G65/00; C08G65/02; C08G65/26; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/068; C09D157/00; C09D157/06; C09D157/10; C09D163/00; C08L; C08L71/00; C08L71/02; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/17; Y10S525/00; Y10S525/913; Y10S525/934
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
128 words
A POWER 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 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 POLYETHER IN TGE 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 POWER 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 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 POLYETHER IN TGE 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
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 5
Dependent Claim
25 words
A powder coating composition in accordance with claim 1 wherein said carboxyl terminated polyether has a molecular weight (Mn) between about 500 and about 5,000.
Claim 6
Dependent Claim
25 words
A powder coating composition in accordance with claim 1 wherein said carboxyl terminated polyether has a molecular weight (Mn) between about 700 and about 3500.
Claim 7
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 8
Dependent Claim
18 words
A powder coating composition in accordance with claim 6 wherein said monofunctional, alpha-beta olefinically unsaturated monomers are acrylates.
Claim 9
Dependent Claim
106 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 polyether in the amount of between about 0.8 and about 1.2 carboxyl groups for each epoxy group in the copolymer, said carboxyl terminated polyether having the general structure:
Claim 10
Dependent Claim
106 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 polyether in the amount of between about 0.8 and about 1.2 carboxyl groups for each epoxy group in the copolymer, said carboxyl terminated polyether having the general structure:
Claim 11
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 12
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 13
Dependent Claim
25 words
A powder coating composition in accordance with claim 8 wherein said carboxyl terminated polyether has a molecular weight (Mn) between about 500 and about 5,000.
Claim 14
Dependent Claim
25 words
A powder coating composition in accordance with claim 8 wherein said carboxyl terminated polyether has a molecular weight (Mn) between about 700 and about 3500.
Claim 15
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 16
Dependent Claim
18 words
A powder coating composition in accordance with claim 13 wherein said monofunctional, alpha-beta olefinically unsaturated monomers are acrylates.
Claim 17
Dependent Claim
25 words
A powder coating composition in accordance with claim 14 wherein said acrylates consist essentially of esters of C1-C8 monohydric alcohols and acrylic or methacrylic acid.
Claim 18
Dependent Claim
41 words
A powder coating composition in accordance with claim 13 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 19
Dependent Claim
30 words
A powder coating composition in accordance with claim 16 wherein said vinyl hydrocarbons are selected from the group consisting of styrene, alpha methyl styrene, vinyl toluene, t-butyl styrene and chlorostyrene.
Claim 20
Dependent Claim
34 words
A powder coating composition in accordance with claim 13 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 |