US3136736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising polyepoxides and maleic anhydride copolymers
Assignee: Rohm and Haas Co
•
Filing: 1959-02-26
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Granted: 1964-06-09
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Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Robert N Washburne
- 👤 William D Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:21
CPC Classifications
C; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064; C09D163/00; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A COATING COMPOSITION COMPRISING A SOLUTION IN AN ORGAINIC SOLVENT WHICH IS FREE OF ALCOHOLIC AND PHENOLIC HYDROXYL AND AMINE GROUPS OF (1) 70% TO 90% BY WEIGHT OF A LINEAR ADDITION COPOLYMER, HAVING A VISCOSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 10,000 TO 120, 000, OF A MIXTURE OF STYRENE, METHYL METHACRYLATE, BUTYL HYDROGEN MALEATE, AND 3% TO 15% BY WEIGHT OF MALEIC ANHYDRIDE, THE AMOUNT OF STYRENE BEING NOT OVER 50% BY WEIGHT OF THE COPOLYMER AND THE AMOUNT OF BUTYL HYDROGEN MALEATE NOT BEING OVER 10% BY WEIGHT OF THE COPOLYMER, THE ANHYDRIDE GROUPS BEING PRESERVED IN THE UNITS OF THE COPOLYMER DERIVED FROM THE MALEIC ANHYDRIDE, AND (2) 10% TO 30% BY WEIGHT OF A RESIN-FORMING POLYEPOXIDE CONTAINING AT LEAST TWO VICEPOXY GROUPS IN WHICH THE OXYGEN ATOM IS CONNECTED TO ADJOINED CARBON ATOMS CONNECTED TOGETHER BY A SINGLE VALENCE BOND AND HAVING A MOLECULAR WEIGHT OF ABOUT 250 TO 5,000.
Claim 2
Dependent Claim
154 words
A COATING COMPOSITION COMPRISING A SOLUTION IN AN ORGAINIC SOLVENT WHICH IS FREE OF ALCOHOLIC AND PHENOLIC HYDROXYL AND AMINE GROUPS OF (1) 70% TO 90% BY WEIGHT OF A LINEAR ADDITION COPOLYMER, HAVING A VISCOSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 10,000 TO 120, 000, OF A MIXTURE OF STYRENE, METHYL METHACRYLATE, BUTYL HYDROGEN MALEATE, AND 3% TO 15% BY WEIGHT OF MALEIC ANHYDRIDE, THE AMOUNT OF STYRENE BEING NOT OVER 50% BY WEIGHT OF THE COPOLYMER AND THE AMOUNT OF BUTYL HYDROGEN MALEATE NOT BEING OVER 10% BY WEIGHT OF THE COPOLYMER, THE ANHYDRIDE GROUPS BEING PRESERVED IN THE UNITS OF THE COPOLYMER DERIVED FROM THE MALEIC ANHYDRIDE, AND (2) 10% TO 30% BY WEIGHT OF A RESIN-FORMING POLYEPOXIDE CONTAINING AT LEAST TWO VICEPOXY GROUPS IN WHICH THE OXYGEN ATOM IS CONNECTED TO ADJOINED CARBON ATOMS CONNECTED TOGETHER BY A SINGLE VALENCE BOND AND HAVING A MOLECULAR WEIGHT OF ABOUT 250 TO 5,000.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |