Patent US2885375A successfully refreshed from Google Patents.
US2885375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-drying resinous ester from partial allyl ether of pentaerythritol
Assignee: Hercules Powder Co
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Filing: 1956-09-14
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Granted: 1959-05-05
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Expires: 1976-09-14
Abstract
No abstract record available.
Inventors
- 👤 Conrad J Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:59
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN AIR-DRYING RESINOUS ESTER HAVING AN ACID NUMBER LESS THAN 50 PREPARED BY THE ESTERIFICATION OF INGREDIENTS CONSISTING ESSENTIALLY OF A PARTIAL ALLYL ETHER OF PENTAERYTHRITOL HAVING AT LEAST TWO FREE HYDROXYL GROUPS PER MOLECULE, A FATTY ACID SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF DRYING FATTY OILS AND DRYING FATTY ACIDS, AND A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ACID, ISOPHTHALIC AICD, TEREPHTHALIC ACID, SUCCINIC ACID, ADIPIC ACID, AZELAIC ACID AND SEBACIC ACID, THE PROPORTION OF SAID INGREDIENTS BEING SUCH AS TO PROVIDE AN APPROXIMATE STOICHIOMETRIC EQUIVALENCE OF HYDROXYL AND CARBOXYL GROUPS.
Claim 2
Dependent Claim
96 words
AN AIR-DRYING RESINOUS ESTER HAVING AN ACID NUMBER LESS THAN 50 PREPARED BY THE ESTERIFICATION OF INGREDIENTS CONSISTING ESSENTIALLY OF A PARTIAL ALLYL ETHER OF PENTAERYTHRITOL HAVING AT LEAST TWO FREE HYDROXYL GROUPS PER MOLECULE, A FATTY ACID SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF DRYING FATTY OILS AND DRYING FATTY ACIDS, AND A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ACID, ISOPHTHALIC AICD, TEREPHTHALIC ACID, SUCCINIC ACID, ADIPIC ACID, AZELAIC ACID AND SEBACIC ACID, THE PROPORTION OF SAID INGREDIENTS BEING SUCH AS TO PROVIDE AN APPROXIMATE STOICHIOMETRIC EQUIVALENCE OF HYDROXYL AND CARBOXYL GROUPS.
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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |