Patent US2904528A successfully refreshed from Google Patents.
US2904528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising epoxide resin and trifluorochloroolefin copolymer and process of crosslinking same
Assignee: 3M Co
•
Filing: 1954-12-30
•
Granted: 1959-09-15
•
Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 Francis J Honn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:04
CPC Classifications
C; C08; C08L; C08L63/00; C08L27/00; C08L27/02; C08L27/12; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D163/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A NOVEL COMPOSITION COMPRISING AN ADMIXTURE OF (1) BETWEEN ABOUT 1 AND ABOUT 98 WEIGHT PERCENT OF A COPOLYMER CONTAINING BETWEEN ABOVE 20 AND NOT HIGHER THAN 80 MOLE PERCENT OF TRIFLUOROCHLOROETHYLENE COPOLYMERIZED WITH VINYLIDENE FLUORIDE, (2) BETWEEN ABOUT 1 AND ABOUT 98 WEIGHT PERCENT OF THE CONDENSATION PRODUCT OF EPICHLOROHYDRIN AND P,P''-DIHYDROXY DIPHENYL DIMETHYL METHANE, SAID CONDENSATION PRODUCT HAVING A MELTING POINT OF AT LEAST 0*C. AND AN EPOXY EQUIVALENT OF AT LEAST 150 AND NOT EXCEEDING ABOUT 3400 AND (3) BETWEEN ABOUT 1 AND ABOUT 12 WEIGHT PERCENT OF A POLYAMINE CROSSLINKING AGENT SELECTED FROM THE GROP CONSISTING OF PRIMARY AND SECONDARY POYAMINES, SAID WEIGHTS BEING BASED ON THE TOTAL WEIGHT OF (1),(2) AND (3).
Claim 2
Dependent Claim
117 words
A NOVEL COMPOSITION COMPRISING AN ADMIXTURE OF (1) BETWEEN ABOUT 1 AND ABOUT 98 WEIGHT PERCENT OF A COPOLYMER CONTAINING BETWEEN ABOVE 20 AND NOT HIGHER THAN 80 MOLE PERCENT OF TRIFLUOROCHLOROETHYLENE COPOLYMERIZED WITH VINYLIDENE FLUORIDE, (2) BETWEEN ABOUT 1 AND ABOUT 98 WEIGHT PERCENT OF THE CONDENSATION PRODUCT OF EPICHLOROHYDRIN AND P,P''-DIHYDROXY DIPHENYL DIMETHYL METHANE, SAID CONDENSATION PRODUCT HAVING A MELTING POINT OF AT LEAST 0*C. AND AN EPOXY EQUIVALENT OF AT LEAST 150 AND NOT EXCEEDING ABOUT 3400 AND (3) BETWEEN ABOUT 1 AND ABOUT 12 WEIGHT PERCENT OF A POLYAMINE CROSSLINKING AGENT SELECTED FROM THE GROP CONSISTING OF PRIMARY AND SECONDARY POYAMINES, SAID WEIGHTS BEING BASED ON THE TOTAL WEIGHT OF (1),(2) AND (3).
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |