Patent US3076787A successfully refreshed from Google Patents.
US3076787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated resin compositions suitable for making self-supporting film based on c8-c20 alkenyl succinic acid
Assignee: California Research LLC
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Filing: 1961-03-24
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Granted: 1963-02-05
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
- 👤 Gordon B Johnson
- 👤 Henry Y Lew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:09
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/676; C08G63/02; C08G63/12; C08G63/52; C08G63/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AN UNSATURATED POLYESTER COMPOSITION USEFUL IN THE PREPARATION OF FLEXIBLE FILMS WHICH IS THE CONDENSATION PRODUCT OF (1) AN ALIPHATIC ETHYLENICALLY UNSATURATED DIBASIC ACID REACTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN A,B-ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID AND ITS ANHYDRIDE; (2) AN AROMATIC ACIDREACTING MATERIAL SELECTED FROMTHE GROUP CONSISTING OF ISOPHTHALIC ACID, TEREPHTHALIC ACID, ORTHOPHTHALIC ACID AND ITS ANHYDRIDE, AND STERS THEREOF WITH LOWER MOLECULAR WEIGHT ALCOHOLS; (3) A MEMBER OF THE GROUP CONSISTING OF ALKYL SUCCINIC ACID AND ITS ANHYDRIDE HAVING 8 TO 20 CARBON ATOMS IN THE ALKENYL GROUP; AND (4) AN ALIPHATIC SATURATED DIHYDRIC ALCOHOL; THE ALIPHATIC ETHYLENICALLY UNSATURATED ACID BEING PRESENT IN PROPORTIONS OF 0.1 TO 1 MOL PER MOL OF COMBINED (2) AND (3), AND (3) BEING EMPLOYED IN PROPORTIONS OF 0.1 TO 0.3 MOL PER MOL OF (2) AND (3), SAID UNSATURATED POLYESTER HAVING AN ACID NUMBER BELOW ABOUT 30.
Claim 2
Dependent Claim
146 words
AN UNSATURATED POLYESTER COMPOSITION USEFUL IN THE PREPARATION OF FLEXIBLE FILMS WHICH IS THE CONDENSATION PRODUCT OF (1) AN ALIPHATIC ETHYLENICALLY UNSATURATED DIBASIC ACID REACTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN A,B-ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID AND ITS ANHYDRIDE; (2) AN AROMATIC ACIDREACTING MATERIAL SELECTED FROMTHE GROUP CONSISTING OF ISOPHTHALIC ACID, TEREPHTHALIC ACID, ORTHOPHTHALIC ACID AND ITS ANHYDRIDE, AND STERS THEREOF WITH LOWER MOLECULAR WEIGHT ALCOHOLS; (3) A MEMBER OF THE GROUP CONSISTING OF ALKYL SUCCINIC ACID AND ITS ANHYDRIDE HAVING 8 TO 20 CARBON ATOMS IN THE ALKENYL GROUP; AND (4) AN ALIPHATIC SATURATED DIHYDRIC ALCOHOL; THE ALIPHATIC ETHYLENICALLY UNSATURATED ACID BEING PRESENT IN PROPORTIONS OF 0.1 TO 1 MOL PER MOL OF COMBINED (2) AND (3), AND (3) BEING EMPLOYED IN PROPORTIONS OF 0.1 TO 0.3 MOL PER MOL OF (2) AND (3), SAID UNSATURATED POLYESTER HAVING AN ACID NUMBER BELOW ABOUT 30.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |