Patent US2851441A successfully refreshed from Google Patents.
US2851441A
Expired / Lapsed
US
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Polybutadiene polyhydric phenol resin
Assignee: FMC Corp
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Filing: 1956-06-13
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Granted: 1958-09-09
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Expires: 1976-06-13
Abstract
No abstract record available.
Inventors
- 👤 Frank P Greenspan
- 👤 Jr Rupert E Light
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:32
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/027; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/40; C08G59/18; C08G59/40; C08G59/62; C08G59/621
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THERMOSETTING, ORGANIC SOLVENT SOLUBLE COMPOSITION USEFUL IN THE PREPARATION OF THERMOSET RESINUOUS PRODUCTS, SAID COMPOSITION COMPRISING (A) THE REACTION PRODUCT OF A POLYBUTADIENE HAVING A MOLECULAR WEIGHT OF 250 TO 25,000 AND CONTAINING AS POLYMER FORMING UNITS ONLY BUTADIENES, WITH A 1 TO 10 CARBON ATOM LOWER ALIPHATIC PERACID AND CONTAINING AT LEAST 1% OR OXIRANE OXYGEN, AND (B) A POLYHYDRIC PHENOL, SAID POLYHYDRIC PHENOL BEING PRESENT IN AN AMOUNT OF 10% TO 100% OF THE STOICHIOMETRIC AMOUNT REQUIRED FOR COMPLETE REACTION WITH THE OXIRANE OXYGEN IN SAID REACTION PRODUCT.
Claim 2
Dependent Claim
90 words
THERMOSETTING, ORGANIC SOLVENT SOLUBLE COMPOSITION USEFUL IN THE PREPARATION OF THERMOSET RESINUOUS PRODUCTS, SAID COMPOSITION COMPRISING (A) THE REACTION PRODUCT OF A POLYBUTADIENE HAVING A MOLECULAR WEIGHT OF 250 TO 25,000 AND CONTAINING AS POLYMER FORMING UNITS ONLY BUTADIENES, WITH A 1 TO 10 CARBON ATOM LOWER ALIPHATIC PERACID AND CONTAINING AT LEAST 1% OR OXIRANE OXYGEN, AND (B) A POLYHYDRIC PHENOL, SAID POLYHYDRIC PHENOL BEING PRESENT IN AN AMOUNT OF 10% TO 100% OF THE STOICHIOMETRIC AMOUNT REQUIRED FOR COMPLETE REACTION WITH THE OXIRANE OXYGEN IN SAID REACTION PRODUCT.
References Cited (Backward Citations)
US2528360A
Cited
US2660563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |