US3274295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block copolymers of vinylidene compounds and perfluorinated nonvinyl monomers
Assignee: EIDP Inc
•
Filing: 1965-10-13
•
Granted: 1966-09-20
•
Expires: 1985-10-13
Abstract
No abstract record available.
Inventors
- 👤 Jr William P Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/06; C08G75/08; C08G65/00; C08G65/002; C08G65/005; C08G65/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A NORMALLY SOLID THERMOPLASTIC BLOCK COPOLYMER HAVING AS A NON-RECURRING CENTRAL SEGMENT, A POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES, ESTERS OF ACRYLIC AND ALPHA-SUBSTITUTED ACRYLIC ACIDS, ETHYLENICALLY UNSATURATED NITRILES, VINYL PYRIDINES, METHYLENE MALONATES AND ARYL-SUBSTITUTED OLEFINS, SAID CENTRAL SEGMENT BEING COMPOSED OF AT LEAST 10 UNITS OF SAID MONOMER AND HAVING ATTACHED AT EACH END A POLYMERIC SEGMENT OF A PERFLUORINATED MONOMER SELECTED FROM THE GROUP CONSISTING OF TRIOCARBONYL DIFLUORIDE, TETRAFLUOROETHYLENE EPOXIDE AND TETRAFLUOROETHYLENE EPISULFIDE, SAID MONOMER BEING DEVOID OF GROUPS CONTAINING AN ACTIVE HYDROGEN ATOM AS DETERMINED BY THE ZEREWITINOFF TEST, AND SAID PERFLUORINATED MONOMER CONSTITUTING 0.5 TO 98% OF THE SUM OF THE MOLES OF SAID BLOCK COPOLYMER.
Claim 2
Dependent Claim
116 words
A NORMALLY SOLID THERMOPLASTIC BLOCK COPOLYMER HAVING AS A NON-RECURRING CENTRAL SEGMENT, A POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES, ESTERS OF ACRYLIC AND ALPHA-SUBSTITUTED ACRYLIC ACIDS, ETHYLENICALLY UNSATURATED NITRILES, VINYL PYRIDINES, METHYLENE MALONATES AND ARYL-SUBSTITUTED OLEFINS, SAID CENTRAL SEGMENT BEING COMPOSED OF AT LEAST 10 UNITS OF SAID MONOMER AND HAVING ATTACHED AT EACH END A POLYMERIC SEGMENT OF A PERFLUORINATED MONOMER SELECTED FROM THE GROUP CONSISTING OF TRIOCARBONYL DIFLUORIDE, TETRAFLUOROETHYLENE EPOXIDE AND TETRAFLUOROETHYLENE EPISULFIDE, SAID MONOMER BEING DEVOID OF GROUPS CONTAINING AN ACTIVE HYDROGEN ATOM AS DETERMINED BY THE ZEREWITINOFF TEST, AND SAID PERFLUORINATED MONOMER CONSTITUTING 0.5 TO 98% OF THE SUM OF THE MOLES OF SAID BLOCK COPOLYMER.
References Cited (Backward Citations)
US2177190A
Cited
US3188165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |