US2967162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions
Assignee: EIDP Inc
•
Filing: 1958-08-25
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Granted: 1961-01-03
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Expires: 1978-08-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Vasta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
C; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F22/00; C08F22/04; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1802; C08F8/00; C08F8/14; C09D135/00; C09D135/06; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/50; C08L; C08L61/00; C08L61/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN INTERPOLYMER OF 30-80 MOL PERCENT OF STYRENE, 15-65 MOL PERCENT OF ETHYL AXRLATE AND 5-25 MOL PERCENT OF A HALF ESTER OF MALEIC ACID AND AT LEAST ONE ALCHOL OF THE CLASS CONSISTING OF PRIMARY AND SECONDARY MONOHYDRIC ALCOHOLS FREE OF NON-BENZENOID UNSATURATION, CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN, CONTAINING UP TO 18 CARBON ATOMS AND CONTAINING HYDROXYL AS THE ONLY FUNCTIONAL SUBSTITUENTS, PREPARED BY (1) HEATING A MIXTURE O STYRENE, ETHYL ACRYLATE AND MALEIC ANHYDRIDE WITHIN SAID MOLAR PROPORTIONS IN SOLUTION IN ABOUT 25%-400%, BASED ON THE WEIGHT OF SAID MIXTURE, OF AROMATIC HYDROCARBON SOLVENT FOR SAID MIXTURE AT A TEMPERATURE OF 125*C. UNTIL SUBSTANTIALLY ALL OF SAID STYRENE, ETHYL ACRYLATE AND MALEIC ANHYDRIDE IS POLYMERIZED, AND (2) CONVERTING THE MALEIC ANHYDRIDE IN THE RESULTING POLYMER TO SAID HALF ESTER B ESTERFICATION WITH SAID ALCOHOL.
Claim 2
Dependent Claim
137 words
AN INTERPOLYMER OF 30-80 MOL PERCENT OF STYRENE, 15-65 MOL PERCENT OF ETHYL AXRLATE AND 5-25 MOL PERCENT OF A HALF ESTER OF MALEIC ACID AND AT LEAST ONE ALCHOL OF THE CLASS CONSISTING OF PRIMARY AND SECONDARY MONOHYDRIC ALCOHOLS FREE OF NON-BENZENOID UNSATURATION, CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN, CONTAINING UP TO 18 CARBON ATOMS AND CONTAINING HYDROXYL AS THE ONLY FUNCTIONAL SUBSTITUENTS, PREPARED BY (1) HEATING A MIXTURE O STYRENE, ETHYL ACRYLATE AND MALEIC ANHYDRIDE WITHIN SAID MOLAR PROPORTIONS IN SOLUTION IN ABOUT 25%-400%, BASED ON THE WEIGHT OF SAID MIXTURE, OF AROMATIC HYDROCARBON SOLVENT FOR SAID MIXTURE AT A TEMPERATURE OF 125*C. UNTIL SUBSTANTIALLY ALL OF SAID STYRENE, ETHYL ACRYLATE AND MALEIC ANHYDRIDE IS POLYMERIZED, AND (2) CONVERTING THE MALEIC ANHYDRIDE IN THE RESULTING POLYMER TO SAID HALF ESTER B ESTERFICATION WITH SAID ALCOHOL.
References Cited (Backward Citations)
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US2519764A
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US2499653A
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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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |