US3222420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable coating composition comprising copolymer containing grafted carboxyl groups and epoxy resin
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1961-07-13
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Granted: 1965-12-07
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Heppolette Robert Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:01
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08F; C08F291/00; C08F291/02; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/0025; C08L; C08L101/00; C08L51/00; C08L51/04; C08L57/00; C09D133/00; C09D133/04; C09D133/06; C09D139/00; C09D139/04; C09D139/08; C09D151/00; C09D151/003; C09D151/04; C09D161/00; C09D161/20; C08L2205/00; C08L2205/02; C08L33/00; C08L33/04; C08L33/06; C08L61/00; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A COATING COMPOSITION ADAPTED TO FORM A HARD BUT FLEXIBLE COATING UPON BAKING ON A SUBSTRATE WHICH CONTAINS AS ESSENTIAL INGREDIENTS (A) A COPOLYMER OF FROM 2 TO 15 PARTS BY WEIGHT OF AN A,B-MONOETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND FROM 85 TO 98 PARTS BY WEIGHT OF MONOETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH AND HAVING ETHYLENIC UNSATURATION AS SOLE REACTIVE GROUP, THE TOTAL PARTS BEING 100, THE SAID ACID AND MONOMER HAVING BEEN COPOLYMERIZED IN THE PRESENCE OF FROM 2 TO 20 PARTS BY WEIGHT OF A POLYMERIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE, POLY(VINYLOLUENE), POLYETHYLENE OF MOLECULAR WEIGHT GREATER THAN 10,000, AND POLY(METHYLMETHACRYLATE); (B) FROM 5% TO 55%, BY WEIGHT OF SAID COPOLYMER, OF AN EPOXIDIZED MATERIAL CONTAINING AT LEAST TWO EPOXIDE GROUPS PER MOLECULE; AND (C) A BASIC CATALYST.
Claim 2
Dependent Claim
132 words
A COATING COMPOSITION ADAPTED TO FORM A HARD BUT FLEXIBLE COATING UPON BAKING ON A SUBSTRATE WHICH CONTAINS AS ESSENTIAL INGREDIENTS (A) A COPOLYMER OF FROM 2 TO 15 PARTS BY WEIGHT OF AN A,B-MONOETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND FROM 85 TO 98 PARTS BY WEIGHT OF MONOETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH AND HAVING ETHYLENIC UNSATURATION AS SOLE REACTIVE GROUP, THE TOTAL PARTS BEING 100, THE SAID ACID AND MONOMER HAVING BEEN COPOLYMERIZED IN THE PRESENCE OF FROM 2 TO 20 PARTS BY WEIGHT OF A POLYMERIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE, POLY(VINYLOLUENE), POLYETHYLENE OF MOLECULAR WEIGHT GREATER THAN 10,000, AND POLY(METHYLMETHACRYLATE); (B) FROM 5% TO 55%, BY WEIGHT OF SAID COPOLYMER, OF AN EPOXIDIZED MATERIAL CONTAINING AT LEAST TWO EPOXIDE GROUPS PER MOLECULE; AND (C) A BASIC CATALYST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |