Patent US2875178A successfully refreshed from Google Patents.
US2875178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymer polyhydric phenol resin
Assignee: FMC Corp
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Filing: 1956-06-13
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Granted: 1959-02-24
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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
2026-10-29 19:02
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/027; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/40; C08G59/18; C08G59/40; C08G59/42; C08G59/62; C08G59/621; C08L; C08L63/00; C08L63/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THERMOSETTING ORGANIC SOLVENT SOLUBLE COMPOSITION USEFUL IN THE PREPARATION OF THERMOSET RESINOUS PRODUCTS, SAID COMPOSITION COMPRISING (A) AN EPOXIDIZED COPOLYMER CONTAINING AT LEAST 1% OF OXIRANE OXYGEN, SAID EPOXIDIZED COPOLMER BEING THE REACTIN PRODUCT OF A LOWER ALIPHATIC PERACID HAVING 1 TO 10 CARBON ATOMS WITH A COPOLYMER HAVING A MOLECULAR WEIGHT OF 250 TO 250,000 OF A CONJUGATED DIENE AND AN ETHYLENIC MONOMER CONTAINING THE CH2-CH- GROUP; 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 EPOXIDIZED COPOLYMER.
Claim 2
Dependent Claim
101 words
THERMOSETTING ORGANIC SOLVENT SOLUBLE COMPOSITION USEFUL IN THE PREPARATION OF THERMOSET RESINOUS PRODUCTS, SAID COMPOSITION COMPRISING (A) AN EPOXIDIZED COPOLYMER CONTAINING AT LEAST 1% OF OXIRANE OXYGEN, SAID EPOXIDIZED COPOLMER BEING THE REACTIN PRODUCT OF A LOWER ALIPHATIC PERACID HAVING 1 TO 10 CARBON ATOMS WITH A COPOLYMER HAVING A MOLECULAR WEIGHT OF 250 TO 250,000 OF A CONJUGATED DIENE AND AN ETHYLENIC MONOMER CONTAINING THE CH2-CH- GROUP; 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 EPOXIDIZED COPOLYMER.
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |