US2652383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester resin compositions and process of preparing same
Assignee: Wyeth Holdings LLC
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Filing: 1950-01-05
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Granted: 1953-09-15
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Expires: 1970-01-05
Abstract
No abstract record available.
Inventors
- 👤 John F Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:58
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A SURFACE COATING COMPOSITION CAPABLE OF PRODUCING, ON CURING, A CRATER-FREE FILM COMPRISING A COMPATIBLE BLEND OF (1) A POLYESTER RESIN COMPOSITION COMPRISING A POLYMERIZABLE MIXTURE OF (A) A POLYMERIZABLY REACTIVE UNSATURATED ALKYD RESIN, (B) A COMPATIBLE POLYMERIZABLY REACTIVE MATERIAL HAVING AT LEAST ONE CH2=C< GROUP AND (C) A CATALYST FOR ACCELERATING THE COPOLYMERIZATION OF (A) AND (B) AND (2) 0.01%-5% BY WEIGHT OF A PHENOL-FORMALDEHYDE RESIN, BASED ON THE TOTAL WEIGHT OF SAID POLYESTER RESIN, WHEREIN THE PHENOL IS SELECTED FROM THE GROUP CONSISTING OF P-TERTIARY BUTYL PHENOL, P-SECONDARY BUTYL PHENOL AND O-TERTIARY AMYL PHENOL AND WHEREIN SAID ALKYD RESIN CONTAINS A PLURALITY OF POLYMERIZABLY REACTIVE ALPHA, BETA ENAL 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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |