US4640966A
Expired / Lapsed
US
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Fluoroolefin copolymer, process for production thereof and composition containing said copolymer
Assignee: DIC Corp
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Filing: 1985-11-05
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Granted: 1987-02-03
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Expires: 2005-11-05
Abstract
Abstract A fluoroolefin copolymer having an inherent viscosity of from 0.05 to 2.0 dl/g and composed of (I) 10 to 70 mole % of monomeric units derived from a fluoroolefin represented by the general formula <IMAGE> wherein X is H, Cl, F, CF3, OCF3 or OC3F7, (II) 5 to 60 mole % of monomeric units derived from a vinyl carboxylate represented by the general formula <IMAGE> wherein R1 represents an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 17 carbon atoms, (III) 5 to 70 mole % of monomeric units derived from a vinyl ether having an alkyl group with 1 to 8 carbon atoms, and (IV) 0 to 30 mole % of monomeric units derived from a hydroxyl-containing vinyl ether represented by the general formula <IMAGE> wherein R2 represents an alkylene group having 1 to 6 carbon atoms.
Inventors
- 👤 Tomomasa Mitani
- 👤 Ichiro Mihata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:04
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08F; C08F214/00; C08F214/18; C08F214/186; C08F214/188
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
143 words
A fluoroolefin copolymer having a hydroxyl value of 20 to 200 mg KOH/g and an inherent viscosity of from 0.05 to 2.0 dl/g obtained by copolymerizing (I) 10 to 70 mole % of a fluoroolefin represented by the general formula ##STR12## wherein X is H, Cl, F, CF 3 , OCF 3 or OC 3 F 7 , (II) 5 to 60 mole % of a vinyl carboxylate represented by the general formula ##STR13## wherein R 1 represents an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 17 carbon atoms, (III) 5 to 70 mole % of an alkyl vinyl either having an alkyl group with 1 to 8 carbon atoms, and (IV) up to 30 mole % of a hydroxyl-containing vinyl ether represented by the general formula ##STR14## wherein R 2 represents an alkylene group having 1 to 6 carbon atoms.
Claim 2
Dependent Claim
143 words
A fluoroolefin copolymer having a hydroxyl value of 20 to 200 mg KOH/g and an inherent viscosity of from 0.05 to 2.0 dl/g obtained by copolymerizing (I) 10 to 70 mole % of a fluoroolefin represented by the general formula ##STR12## wherein X is H, Cl, F, CF 3 , OCF 3 or OC 3 F 7 , (II) 5 to 60 mole % of a vinyl carboxylate represented by the general formula ##STR13## wherein R 1 represents an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 17 carbon atoms, (III) 5 to 70 mole % of an alkyl vinyl either having an alkyl group with 1 to 8 carbon atoms, and (IV) up to 30 mole % of a hydroxyl-containing vinyl ether represented by the general formula ##STR14## wherein R 2 represents an alkylene group having 1 to 6 carbon atoms.
Claim 3
Dependent Claim
10 words
The copolymer of claim 1 wherein the fluoroolefin is tetrafluoroethylene.
Claim 4
Dependent Claim
10 words
The copolymer of claim 1 wherein the fluoroolefin is chlorotrifluoroethylene.
Claim 5
Dependent Claim
10 words
The copolymer of claim 1 wherein the fluoroolefin is hexafluoropropylene.
Claim 6
Dependent Claim
23 words
The copolymer of claim 1 wherein the vinyl carboxylate is a vinyl ester of a carboxylic acid having 9 to 10 carbon atoms.
Claim 7
Dependent Claim
12 words
The copolymer of claim 1 wherein the vinyl carboxylate is vinyl benzoate.
Claim 8
Dependent Claim
29 words
The copolymer of claim 1 which contains 5 to 30 mole % of the hydroxyl-containing vinyl ether (IV), and has a hydroxyl value of 20 to 200 mg KOH/g.
Claim 9
Dependent Claim
38 words
The copolymer of claim 1 which contains 7 to 20 mole % of the hydroxyl-containing vinyl ether (IV) and has a hydroxyl value of 30 to 120 mg KOH/g and an inherent viscosity of 0.2 to 1 dl/g.
Claim 10
Dependent Claim
142 words
A process for producing a fluoroolefin copolymer having a hydroxyl value of 20 to 200 mg KOH/g and an inherent viscosity of from 0.05 to 2.0 dl/g, which comprises polymerizing 10 to 70 mole % of a fluoroolefin represented by the general formula ##STR15## wherein X is H, Cl, F, CF 3 OCF 3 or OC 3 F 7 , 5 to 60 mole % of a vinyl carboxylate represented by the general formula ##STR16## wherein R 1 represents an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 17 carbon atoms, 5 to 70 mole % of an alkyl vinyl ether having an alkyl group with 1 to 8 carbon atoms, and up to 30 mole % of a hydroxyl-containing vinyl ether represented by the general formula ##STR17## wherein R 2 represents an alkylene group having 1 to 6 carbon atoms.
Claim 11
Dependent Claim
142 words
A process for producing a fluoroolefin copolymer having a hydroxyl value of 20 to 200 mg KOH/g and an inherent viscosity of from 0.05 to 2.0 dl/g, which comprises polymerizing 10 to 70 mole % of a fluoroolefin represented by the general formula ##STR15## wherein X is H, Cl, F, CF 3 OCF 3 or OC 3 F 7 , 5 to 60 mole % of a vinyl carboxylate represented by the general formula ##STR16## wherein R 1 represents an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 17 carbon atoms, 5 to 70 mole % of an alkyl vinyl ether having an alkyl group with 1 to 8 carbon atoms, and up to 30 mole % of a hydroxyl-containing vinyl ether represented by the general formula ##STR17## wherein R 2 represents an alkylene group having 1 to 6 carbon atoms.
Claim 12
Dependent Claim
46 words
The process of claim 9 wherein polymerization takes place in the presence of a radical initiator having a moderate decomposition speed at the polymerization reaction temperature and being present in an amount of 0.01 to 10% by weight based on the total weight of the monomers.
Claim 13
Dependent Claim
30 words
The process of claim 9 wherein polymerization is carried out at a temperature of from -20° C. to 130° C. and a pressure of 1 to 100 kg/cm 2 .
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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) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |