US3959404A
Expired / Lapsed
US
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Powder coating compositions containing glycidyl ester copolymers and phenolic hydroxy terminated crosslinking agent
Assignee: EIDP Inc
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Filing: 1973-12-18
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Granted: 1976-05-25
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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° to 90°C and a number average molecular weight (M n ) of between about 2500 and about 8500; and (B) a phenolic hydroxy terminated compound in the amount of between about 0.8 and 1.2 phenolic hydroxy 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
2026-10-31 20:16
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; C09D133/14; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L63/00; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/17; Y10S260/19; Y10S525/00; Y10S525/934
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
104 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 in the range of 40° to 90°C and a molecular weight (M n ) in the range of 2500 to 8500; and B. a phenolic hydroxy terminated compound in the amount of about 0.8 to about 1.2 phenolic hydroxy groups for each epoxy group in the copolymer.
Claim 2
Dependent Claim
104 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 in the range of 40° to 90°C and a molecular weight (M n ) in the range of 2500 to 8500; and B. a phenolic hydroxy terminated compound in the amount of about 0.8 to about 1.2 phenolic hydroxy groups for each epoxy group in the copolymer.
Claim 3
Dependent Claim
61 words
A powder coating composition in accordance with claim 1 wherein said copolymer has a glass transition temperature between about 50° and about 80°C and a molecular weight (M n ) 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
64 words
A powder coating composition in accordance with claim 1 wherein said copolymer has a glass transition temperature between about 50° and about 70°C and a molecular weight (M n ) 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
21 words
A powder paint composition in accordance with claim 1 wherein said phenolic hydroxy terminated compound is a phenolic hydroxy terminated resin.
Claim 6
Dependent Claim
18 words
A powder coating composition in accordance with claim 4 wherein said phenolic hydroxy terminated resin is a polyether.
Claim 7
Dependent Claim
28 words
A powder coating composition in accordance with claim 4 wherein said phenolic hydroxy terminated resin is a polyether having a molecular weight between about 600 and about 3000.
Claim 8
Dependent Claim
39 words
A powder coating composition in accordance with claim 4 wherein said phenolic hydroxy terminated resin is a polyether produced by reacting about one equivalent weight of a diepoxy resin with about 11/2 to 3 equivalent weights of a diphenol.
Claim 9
Dependent Claim
67 words
A powder coating composition in accordance with claim 4 wherein said phenolic hydroxy terminated resin is a polyether produced by reacting about 1 equivalent weight of a diepoxy resin having a molecular weight in the range of from about 250 to about 2000 with about 11/2 to 3 equivalent weights of a diphenol having a molecular weight in the range of from about 110 to about 550.
Claim 10
Dependent Claim
18 words
A powder coating composition in accordance with claim 1 wherein said phenolic hydroxy terminated compound is a diphenol.
Claim 11
Dependent Claim
42 words
A powder coating composition in accordance with claim 9 wherein said diphenol is selected from the group consisting of: bisphenol A; dihydroxydiphenyl sulfone; 1,1' bis(4-hydroxyphenyl) cyclohexane; 2,2'-biphenol; 4,4'-biphenol; 1,3-dihydroxynaphthalene; bis(2-hydroxyphenyl) methane; 4,4' dihydroxydiphenyl sulfide; 4,4'dihydroxydiphenol oxide; bis(4-hydroxyphenyl) methane; hydroquinone; and 2-2'-bis(4-hydroxyphenyl) butane.
Claim 12
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 13
Dependent Claim
18 words
A powder coating composition in accordance with claim 11 wherein said monofunctional, alpha-beta olefinically unsaturated monomers are acrylates.
Claim 14
Dependent Claim
27 words
A powder coating composition in accordance with claim 12 wherein said acrylates consist essentially of esters of C 1-C 8 monohydric alcohols and acrylic or methacrylic acid.
Claim 15
Dependent Claim
41 words
A powder coating composition in accordance with claim 11 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 16
Dependent Claim
30 words
A powder coating composition in accordance with claim 14 wherein said vinyl hydrocarbons are selected from the group consisting of styrene, alpha methyl styrene, vinyl toluene, t-butyl styrene and chlorostyrene.
Claim 17
Dependent Claim
34 words
A powder coating composition in accordance with claim 11 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.
Claim 18
Dependent Claim
136 words
A powder coating composition which, exclusive of pigments and other non-reactive components, comprises a coreactable mixture of: A. a copolymer of about 10 to about 25 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 90 to about 75 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature between about 50° and about 80°C and a molecular weight (M n ) between about 2500 and about 8500; and B. a phenolic hydroxy terminated resin comprising a polyester formed by reacting about one equivalent weight of a diepoxy resin with about one and a half to three equivalent weights of a diphenol, said phenolic hydroxy terminated resin being present in the amount of about 0.8 to about 1.2 phenolic hydroxy groups for each epoxy group in the copolymer.
Claim 19
Dependent Claim
136 words
A powder coating composition which, exclusive of pigments and other non-reactive components, comprises a coreactable mixture of: A. a copolymer of about 10 to about 25 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 90 to about 75 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature between about 50° and about 80°C and a molecular weight (M n ) between about 2500 and about 8500; and B. a phenolic hydroxy terminated resin comprising a polyester formed by reacting about one equivalent weight of a diepoxy resin with about one and a half to three equivalent weights of a diphenol, said phenolic hydroxy terminated resin being present in the amount of about 0.8 to about 1.2 phenolic hydroxy groups for each epoxy group in the copolymer.
Claim 20
Dependent Claim
62 words
A powder coating composition in accordance with claim 17 wherein said copolymer has a glass transition temperature between about 50° and about 70°C and a molecular weight (M n ) in the range of about 3,000 to about 4,000, said glycidyl ester being present in said copolymer from at least about 12 weight percent to no more than about 20 weight percent.
Claim 21
Dependent Claim
131 words
A powder coating composition which, exclusive of pigments and other non-reactive components, comprises a coreactable mixture of: A. a copolymer of about 10 to about 25 weight percent of glycidyl ester of a monoethylenically unsaturated acid and about 90 to about 75 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature between about 50° and about 80°C and a molecular weight (M n ) between about 3000 and about 6500; and B. a diphenol selected from the group consisting of: bisphenol A; dihydroxydiphenyl sulfone; 1,1' bis(4-hydroxyphenyl) cyclohexane; 2,2'-biphenol; 4,4'-biphenol; 1,3-dihydroxynaphthalene; bis(2-hydroxyphenyl) methane; 4,4' dihydroxydiphenyl sulfide; 4-4'dihydroxydiphenol oxide; bis(4-hydroxyphenyl) methane; hydroquinone; and 2-2'-bis(4-hydroxyphenyl) butane, said diphenol being present in the amount of about 0.8 to about 1.1 phenolic hydroxy groups for each epoxy group in the copolymer.
Claim 22
Dependent Claim
131 words
A powder coating composition which, exclusive of pigments and other non-reactive components, comprises a coreactable mixture of: A. a copolymer of about 10 to about 25 weight percent of glycidyl ester of a monoethylenically unsaturated acid and about 90 to about 75 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature between about 50° and about 80°C and a molecular weight (M n ) between about 3000 and about 6500; and B. a diphenol selected from the group consisting of: bisphenol A; dihydroxydiphenyl sulfone; 1,1' bis(4-hydroxyphenyl) cyclohexane; 2,2'-biphenol; 4,4'-biphenol; 1,3-dihydroxynaphthalene; bis(2-hydroxyphenyl) methane; 4,4' dihydroxydiphenyl sulfide; 4-4'dihydroxydiphenol oxide; bis(4-hydroxyphenyl) methane; hydroquinone; and 2-2'-bis(4-hydroxyphenyl) butane, said diphenol being present in the amount of about 0.8 to about 1.1 phenolic hydroxy groups for each epoxy group in the copolymer.
Claim 23
Dependent Claim
62 words
A powder coating composition in accordance with claim 19 wherein said copolymer has a glass transition temperature between about 50° and about 70°C and a molecular weight (M n ) in the range of about 3,000 to about 4,000, said glycidyl ester being present in said copolymer from at least about 12 weight percent to no more than about 20 weight percent.
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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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |