US3752778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water dilutable alkyd resins modified by radicals of drying fatty acids
Assignee: Bayer AG
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Filing: 1971-10-04
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Granted: 1973-08-14
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Expires: 1991-10-04
Abstract
Abstract THE INVENTION RELATES TO ALKYD RESINS MODIFIED BY DRYING FATTY ACID RADICALS, CONTAINING URETHANE GROUPS AND HAVING AN ACID NUMBER OF FROM ABOUT 30 TO ABOUT 70 AND A HYDROXYL NUMBER OF FROM ABOUT 20 TO ABOUT 120, AND PROCESSES FOR THE PRODUCTION THEREOF. ALKALI, AMMONIA OR AMINE SALTS OF SAID ALKYD RESINS ARE SOLUBLE IN WATER AND THE AQUEOUS SOLUTIONS OF SAID SALTS ARE SUITABLE AS VARNISHES, SAID VARNISHES AND COATINGS OBTAINED THEREFROM HAVING ADVANTAGEOUS PROPERTIES.
Inventors
- 👤 R Dhein
- 👤 H Schnell
- 👤 K Raichle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:32
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0823; C08G18/28; C08G18/40; C08G18/42; C08G18/4288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |