US4091048A
Expired / Lapsed
US
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Powder coating compositions containing glycidyl ester copolymers and organic carboxylic acid anhydride crosslinking agent
Assignee: EIDP Inc
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Filing: 1973-12-18
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Granted: 1978-05-23
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Expires: 1993-12-18
Abstract
Abstract Powder coating compositions are disclosed which, exclusive of pigments and other nonreactive components, comprise a coreactive mixture of: (A) a copolymer of between about 5 and about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and between about 95 to about 80 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 (M n ) of between about 2500 and about 8500; and (B) an organic carboxylic acid anhydride crosslinking agent, said anhydride being present in the amount of from about 0.4 to about 1.0 anhydride groups for each epoxy group in the copolymer.
Inventors
- 👤 Santokh S. Labana
- 👤 Ares N. Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:30
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/068; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3209; C08K; C08K5/00; C08K5/04; C08K5/09; C08L; C08L101/00; C08L57/00; C08L57/04; C09D133/14; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L73/00; C08L73/02; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/17; Y10S260/19; Y10S525/00; Y10S525/934
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
108 words
A powder coating composition which, exclusive of pigments and other nonreactive components, comprises a coreactable mixture of: (A) a copolymer of about 5 to about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 95 to about 80 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 (M n ) in the range of 2500 to 8500; and (B) an organic carboxylic acid anhydride crosslinking agent in the amount of between about 0.4 and about 1.0 anhydride groups for each epoxy group in the copolymer.
Claim 2
Dependent Claim
108 words
A powder coating composition which, exclusive of pigments and other nonreactive components, comprises a coreactable mixture of: (A) a copolymer of about 5 to about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 95 to about 80 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 (M n ) in the range of 2500 to 8500; and (B) an organic carboxylic acid anhydride crosslinking agent in the amount of between about 0.4 and about 1.0 anhydride groups for each epoxy group in the copolymer.
Claim 3
Dependent Claim
38 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 (M n ) between about 3000 and about 6500.
Claim 4
Dependent Claim
38 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 (M n ) between about 3000 and about 4000.
Claim 5
Dependent Claim
32 words
A powder coating composition in accordance with claim 1 wherein said monoethylenically unsaturated monomers consist essentially of monofunctional, alpha-beta olefinically unsaturated monomers selected from acrylates or mixtures of acrylates and monovinyl hydrocarbons.
Claim 6
Dependent Claim
32 words
A powder coating composition in accordance with claim 4 wherein said alpha-beta olefinically unsaturated monomers consist essentially of esters of C 1 - C 8 monohydric alcohols and acrylic or methacrylic acid.
Claim 7
Dependent Claim
44 words
A powder coating composition in accordance with claim 4 wherein modifying monomers selected from the group consisting of alpha methyl styrene, acrylonitrile, methacrylonitrile and chlorostyrene are included in an amount ranging between about 0 weight percent and about 35 weight percent of said copolymer.
Claim 8
Dependent Claim
32 words
A powder coating composition in accordance with claim 1 wherein said anhydride crosslinking agent is an anhydride of a saturated, aliphatic carboxylic acid containing between about 4 and about 20 carbon atoms.
Claim 9
Dependent Claim
32 words
A powder coating composition in accordance with claim 1 wherein said anhydride crosslinking agent is in anhydride of an unsaturated, aliphatic carboxylic acid containing between about 4 and about 20 carbon atoms.
Claim 10
Dependent Claim
22 words
A powder coating composition in accordance with claim 1 wherein said anhydride crosslinking agent is an anhydride of an aromatic carboxylic acid.
Claim 11
Dependent Claim
23 words
A powder coating composition in accordance with claim 1 wherein said anhydride crosslinking agent is an anhydride of a saturated alicyclic carboxylic acid.
Claim 12
Dependent Claim
23 words
A powder coating composition in accordance with claim 1 wherein said anhydride crosslinking agent is an anhydride of an unsaturated alicyclic carboxylic acid.
Claim 13
Dependent Claim
22 words
A powder coating composition in accordance with claim 1 wherein said anhydride crosslinking agent is an anhydride of a heterocyclic carboxylic acid.
Claim 14
Dependent Claim
21 words
A powder coating composition in accordance with claim 1 wherein said anhydride is a polymer of a saturated aliphatic carboxylic acid.
Claim 15
Dependent Claim
21 words
A powder coating composition in accordance with claim 1 wherein said anhydride is a polymer of an unsaturated, aliphatic carboxylic acid.
Claim 16
Dependent Claim
172 words
A powder coating composition which, exclusive of pigments and other nonreactive components, comprises a coreactable mixture of: (A) a copolymer of about 5 to about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 95 to about 80 weight percent of other monoethylenically unsaturated monomers consisting essentially of monofunctional, alpha-beta olefinically unsaturated monomers, said copolymer having a glass transition temperature in the range of 40° C to 90° C and a molecular weight (M n ) in the range of 2500 to 8500; and (B) an organic carboxylic acid anhydride selected from the group consisting of anhydrides of saturated aliphatic carboxylic acids containing between about 4 and about 20 carbon atoms, unsaturated aliphatic carboxylic acids containing between about 4 and about 20 carbons, atomatic carboxylic acids; saturated, alicyclic carboxylic acids; unsaturated, alicyclic carboxylic acids; heterocyclic carboxylic acids; and polymers of saturated or unsaturated carboxylic acids, said anhydride being included in an amount ranging from about 0.4 to about 1.0 anhydride groups per epoxy group in the copolymer.
Claim 17
Dependent Claim
172 words
A powder coating composition which, exclusive of pigments and other nonreactive components, comprises a coreactable mixture of: (A) a copolymer of about 5 to about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 95 to about 80 weight percent of other monoethylenically unsaturated monomers consisting essentially of monofunctional, alpha-beta olefinically unsaturated monomers, said copolymer having a glass transition temperature in the range of 40° C to 90° C and a molecular weight (M n ) in the range of 2500 to 8500; and (B) an organic carboxylic acid anhydride selected from the group consisting of anhydrides of saturated aliphatic carboxylic acids containing between about 4 and about 20 carbon atoms, unsaturated aliphatic carboxylic acids containing between about 4 and about 20 carbons, atomatic carboxylic acids; saturated, alicyclic carboxylic acids; unsaturated, alicyclic carboxylic acids; heterocyclic carboxylic acids; and polymers of saturated or unsaturated carboxylic acids, said anhydride being included in an amount ranging from about 0.4 to about 1.0 anhydride groups per epoxy group in the copolymer.
Claim 18
Dependent Claim
38 words
A powder coating composition in accordance with claim 15 wherein said copolymer has a glass transition temperature between about 50° C and about 80° C and a molecular weight (M n ) between about 3000 and about 6500.
Claim 19
Dependent Claim
38 words
A powder coating composition in accordance with claim 15 wherein said copolymer has a glass transition temperature between about 60° C and about 70° C and a molecular weight (M n ) between about 3000 and about 4000.
Claim 20
Dependent Claim
29 words
A powder coating composition in accordance with claim 15 wherein said monoethylenically unsaturated monomers consist essentially of C 1 - C 8 monohydric alcohols and acrylic or methacrylic acid.
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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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |