Patent US4287301A successfully refreshed from Google Patents.
Patent US4151340A successfully refreshed from Google Patents.
US4151340A
Expired / Lapsed
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Process for producing fluorocopolymer
Assignee: AGC Inc
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Filing: 1978-01-17
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Granted: 1979-04-24
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Expires: 1998-01-17
Abstract
Abstract A fluorocopolymer is produced by copolymerizing a fluoroolefin and cyclohexyl vinyl ether in the presence of a polymerization initiator at -30 DEG to +150 DEG C. at a molar ratio of the fluoroolefin to cyclohexyl vinyl ether in charge of 95:5 to 5:95.
Inventors
- 👤 Masahiko Ichimura
- 👤 Haruhisa Miyake
- 👤 Shun-ichi Kodama
- 👤 Michio Hisasue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:21
CPC Classifications
C; C08; C08F; C08F216/00; C08F216/12; C08F216/14; C08F216/16; C08F216/165; C08F214/00; C08F214/18; C08F214/186; C08F214/188; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
A fluorocopolymer having high rigidity, and being solvent soluble which comprises 25 to 65 mole percent of a component of a fluoroolefin monomer selected from the group consisting of tetrafluoroethylene and chlorotrifluoroethylene; 75 to 35 mole percent of a component of a cyclohexylvinyl ether monomer; or a mixture of cyclohexylvinyl ether monomer and a comonomer selected from the group consisting of olefin, halo olefin, unsaturated carboxylic acid ester, vinyl carboxylate and alkyl vinyl ether monomers; wherein said component of said comonomer is present in an amount less than 30 mole percent of the total amount of said fluoroolefin and said cyclohexyl vinyl ether monomers.
Claim 2
Dependent Claim
104 words
A fluorocopolymer having high rigidity, and being solvent soluble which comprises 25 to 65 mole percent of a component of a fluoroolefin monomer selected from the group consisting of tetrafluoroethylene and chlorotrifluoroethylene; 75 to 35 mole percent of a component of a cyclohexylvinyl ether monomer; or a mixture of cyclohexylvinyl ether monomer and a comonomer selected from the group consisting of olefin, halo olefin, unsaturated carboxylic acid ester, vinyl carboxylate and alkyl vinyl ether monomers; wherein said component of said comonomer is present in an amount less than 30 mole percent of the total amount of said fluoroolefin and said cyclohexyl vinyl ether monomers.
Claim 3
Dependent Claim
20 words
A fluorocopolymer according to claim 1, wherein the amount of the component of said fluoroolefin monomer is 45-55 mole percent.
Claim 4
Dependent Claim
18 words
A fluorocopolymer according to claim 1, wherein the component of said fluoroolefin monomer is a component of tetrafluoroethylene.
Claim 5
Dependent Claim
18 words
A fluorocopolymer according to claim 1, wherein the component of said fluoroolefin monomer is a component of chlorotrifluoroethylene.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |