US3888943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder coating compositions comprising a blend of coreactive polymers - i
Assignee: EIDP Inc
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Filing: 1973-12-19
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Granted: 1975-06-10
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Expires: 1993-12-19
Abstract
Abstract Powder coating compositions are dissolved which comprise a blend of qualitatively-monofunctional, quantitatively-polyfunctional, coreactive copolymers. One polymer of the blend is an epoxyfunctional copolymer of about 5 to about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and about 80 to about 95 weight percent of monoethylenically unsaturated, quantitatively and qualitatively-monofunctional monomers. The second polymer of the blend is a copolymer of about 5 to about 20 weight percent of an anhydride of an olefinically-unsaturated dicarboxylic acid and about 80 to 95 weight percent of monoethylenically unsaturated, quantitatively and qualitativelymonofunctional monomers. The epoxy-functional copolymer and the anhydride-functional copolymer are blended in such proportions as to provide about 0.4 to about 1 anhydride group per epoxy group.
Inventors
- 👤 Santokh S Labana
- 👤 Ares N Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:59
CPC Classifications
C; C09; C09D; C09D163/00; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/068; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/062; C08L33/064; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/17; Y10S260/19; Y10S525/00; Y10S525/913
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
19 words
A THERMOSETTABLE POWDER COATING COMPRISING WHICH EXCLUSIVE OF PIGMENTS AND OTHER NON-REACTIVE COMPONENTS COMPRISES OF A COREACTIVE MIXTURE OF
Claim 2
Dependent Claim
19 words
A THERMOSETTABLE POWDER COATING COMPRISING WHICH EXCLUSIVE OF PIGMENTS AND OTHER NON-REACTIVE COMPONENTS COMPRISES OF A COREACTIVE MIXTURE OF
Claim 3
Dependent Claim
59 words
EPOXY-FUNCTIONAL COPOLYMER OF ABOUT 5 TO ABOUT 20 WEIGHT PERCENT OF A GLYCIDYL ESTER OF A MONOETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND ABOUT 80 TO ABOUT 95 WEIGHT PERCENT OF MONOETHYLENICALLY UNSATURATED, QUANTITATIVELY-MONOFUNCTIONAL MONOMERS, AND HAVING AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 1500 TO ABOUT 15,000 WITH NO MORE THAN 5 PERCENT THEREOF HAVING MOLECULAR WEIGHT ABOVE 20,000.
Claim 4
Dependent Claim
59 words
EPOXY-FUNCTIONAL COPOLYMER OF ABOUT 5 TO ABOUT 20 WEIGHT PERCENT OF A GLYCIDYL ESTER OF A MONOETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND ABOUT 80 TO ABOUT 95 WEIGHT PERCENT OF MONOETHYLENICALLY UNSATURATED, QUANTITATIVELY-MONOFUNCTIONAL MONOMERS, AND HAVING AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 1500 TO ABOUT 15,000 WITH NO MORE THAN 5 PERCENT THEREOF HAVING MOLECULAR WEIGHT ABOVE 20,000.
Claim 5
Dependent Claim
85 words
AN ANHYDRIDE-FUNCTIONAL COPOLYMER OF ABOUT 5 TO ABOUT 20 WEIGHT PERCENT OF AN ANHYDRIDE OF AN OLEFINICALLYUNSATURATED DICARBOXYLIC ACID AND ABOUT 80 TO ABOUT 95 WEIGHT PERCENT OF MONETHYLENICALLY UNSATURATED, QUANTITATIVELY-MONOFUNCTIONAL MONOMERS AND HAVING AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 1500 TO ABOUT 15,000 WITH NO MORE THAN 5 PERCENT THEREOF HAVING MOLECULAR WEIGHT ABOUT 20,000, SAID ANHYDRIDE-FUNCTIONAL COPOLYMER BEING PRESENT IN AN AMOUNT SUCH AS TO PROVIDE ABOUT 0.4 TO ABOUT 1 ANHYDRIDE GROUP PER EPOXY GROUP IN THE EPOXY-FUNCTIONAL COPOLYMER, SAID
Claim 6
Dependent Claim
85 words
AN ANHYDRIDE-FUNCTIONAL COPOLYMER OF ABOUT 5 TO ABOUT 20 WEIGHT PERCENT OF AN ANHYDRIDE OF AN OLEFINICALLYUNSATURATED DICARBOXYLIC ACID AND ABOUT 80 TO ABOUT 95 WEIGHT PERCENT OF MONETHYLENICALLY UNSATURATED, QUANTITATIVELY-MONOFUNCTIONAL MONOMERS AND HAVING AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 1500 TO ABOUT 15,000 WITH NO MORE THAN 5 PERCENT THEREOF HAVING MOLECULAR WEIGHT ABOUT 20,000, SAID ANHYDRIDE-FUNCTIONAL COPOLYMER BEING PRESENT IN AN AMOUNT SUCH AS TO PROVIDE ABOUT 0.4 TO ABOUT 1 ANHYDRIDE GROUP PER EPOXY GROUP IN THE EPOXY-FUNCTIONAL COPOLYMER, SAID
Claim 7
Dependent Claim
46 words
A thermosettable powder coating composition in accordance with claim 1 wherein said epoxy-functional copolymer contains about 8 to about 15 weight percent of said glycidyl ester of a monoethylenically unsaturated carboxylic acid and about 85 to about 92 weight percent of said monoethylenically unsaturated, quantitatively-monofunctional monomers.
Claim 8
Dependent Claim
84 words
an anhydride-functional copolymer of about 5 to about 20 weight percent of an anhydride of an olefinically-unsaturated dicarboxylic acid and about 80 to about 95 weight percent of monoethylenically unsaturated, quantitatively-monofunctional monomers and having average molecular weight in the range of about 1500 to about 15,000 with no more than 5 percent thereof having molecular weight about 20,000, said anhydride-functional copolymer.being present in an amount such as to provide about 0.4 to about 1 anhydride group per epoxy group in the epoxy-functional copolymer, and
Claim 9
Dependent Claim
84 words
an anhydride-functional copolymer of about 5 to about 20 weight percent of an anhydride of an olefinically-unsaturated dicarboxylic acid and about 80 to about 95 weight percent of monoethylenically unsaturated, quantitatively-monofunctional monomers and having average molecular weight in the range of about 1500 to about 15,000 with no more than 5 percent thereof having molecular weight about 20,000, said anhydride-functional copolymer.being present in an amount such as to provide about 0.4 to about 1 anhydride group per epoxy group in the epoxy-functional copolymer, and
Claim 10
Dependent Claim
18 words
a polymeric flow control agent forming at least about 0.5 to about 4.0 weight percent of the mixture.
Claim 11
Dependent Claim
18 words
a polymeric flow control agent forming at least about 0.5 to about 4.0 weight percent of the mixture.
Claim 12
Dependent Claim
17 words
A thermosettable powder coating composition in accordance with claim 1 wherein said glycidyl ester is glycidyl methacrylate.
Claim 13
Dependent Claim
18 words
A POLYMERIC FLOW CONTROL AGENT FORMING AT LEAST ABOUT 0.5 TO ABOUT 4.0 WEIGHT PERCENT OF THE MIXTURE.
Claim 14
Dependent Claim
18 words
A POLYMERIC FLOW CONTROL AGENT FORMING AT LEAST ABOUT 0.5 TO ABOUT 4.0 WEIGHT PERCENT OF THE MIXTURE.
Claim 15
Dependent Claim
17 words
A thermosettable powder coating composition in accordance with claim 1 wherein said glycidyl ester is glycidyl acrylate.
Claim 16
Dependent Claim
45 words
A thermosettable powder coating composition in accordance with claim 1 wherein said anhydride-functional copolymer contains about 8 to about 15 weight percent of said anhydride of an olefinically unsaturated dicarboxylic acid and about 85 to about 92 weight percent of said monoethylenically unsaturated, quantitatively-monofunctional monomers.
Claim 17
Dependent Claim
23 words
A thermosettable powder coating composition in accordance with claim 1 wherein said olefinically unsaturated dicarboxylic acid is an alpha-beta olefinically unsaturated dicarboxylic acid.
Claim 18
Dependent Claim
22 words
A thermosettable powder coating composition in accordance with claim 1 wherein said anhydride of said olefinically unsaturated dicarboxylic acid is maleic anhydride.
Claim 19
Dependent Claim
32 words
A thermosettable powder coating composition in accordance with claim 1 wherein said epoxy-functional copolymer and said anhydride-functional copolymer each have average molecular weight in the range of about 2,500 to about 6,000.
References Cited (Backward Citations)
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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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |