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US4897457A
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Novel fluorine-containing cyclic polymer
Assignee: AGC Inc
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Filing: 1988-08-10
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Granted: 1990-01-30
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Expires: 2008-08-10
Abstract
Abstract A fluorine-containing thermoplastic resinous polymer which consist essentially of a group (a) of repeating units of a cyclic structure to be represented by the following general formula: ##STR1## (where: n is an integer of 1 to 2); the polymer having a molecular weight such that the intrinsic viscosity thereof may become at least 0.1. A fluorine-containing thermoplastic resinous polymer which consists essentially of: (i) a group (a) of repeating units to be represented by the following general formula: ##STR2## (where: n is an integer of 1 or 2), and (ii) a group (b) of repeating units to be represented by the following general formula: --CF.sub.2 --CFX)-- (where: X is selected from fluorine, chlorine. O--CF 2 CF 2 CF 3 , O--CF 2 CF(CF 3 )OCF 2 CF 2 SO 2 F, and O--CF 2 CF 2 CF 2 COOCH 3 ) the polymer containing therein at least 80% by weight of the group of repeating units (a), and having a molecular weight such that the intrinsic viscosity thereof may be become at least 0.1.
Inventors
- 👤 Masaru Nakamura
- 👤 Isamu Kaneko
- 👤 Kazuya Oharu
- 👤 Gen Kojima
- 👤 Masashi Matsuo
- 👤 Shunichi Samejima
- 👤 Motoi Kamba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:21
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F16/00; C08F16/12; C08F16/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
51 words
A fluorine-containing thermoplastic resinous polymer which consists essentially of (a) of repeating units of a cyclic structure represented by the following general formula: ##STR31## where n is an integer of 1 or 2, said polymer having a molecular weight such that the intrinsic viscosity of the polymer is at least 0.1.
Claim 2
Dependent Claim
51 words
A fluorine-containing thermoplastic resinous polymer which consists essentially of (a) of repeating units of a cyclic structure represented by the following general formula: ##STR31## where n is an integer of 1 or 2, said polymer having a molecular weight such that the intrinsic viscosity of the polymer is at least 0.1.
Claim 3
Dependent Claim
24 words
A polymer according to claim 1, wherein said (a) repeating units are repeating units of cyclically polymerized perfloroallyl vinyl ether and/or perfluorobutenyl vinyl ether.
Claim 4
Dependent Claim
110 words
A fluorine-containing thermoplastic resinous polymer which consists essentially of: (i) (a) of repeating units represented by the following general formula: ##STR32## where n is an integer of 1 or 2, and (ii) (b) of repeating units represented by the following general formula: CF.sub.2 --CFX where X is selected from fluorine, chlorine O--CF 2 CF 2 CF 3 , O--CF 2 CF(CF 3 )OCF 2 CF 2 SP 2 F, and --CF 2 CF 2 CF 2 COOH 3 , said polymer containing therein at least 80% by weight of the repeating units (a), and having a molecular weight such that the intrinsic viscosity of the polymer is at least 0.1.
Claim 5
Dependent Claim
110 words
A fluorine-containing thermoplastic resinous polymer which consists essentially of: (i) (a) of repeating units represented by the following general formula: ##STR32## where n is an integer of 1 or 2, and (ii) (b) of repeating units represented by the following general formula: CF.sub.2 --CFX where X is selected from fluorine, chlorine O--CF 2 CF 2 CF 3 , O--CF 2 CF(CF 3 )OCF 2 CF 2 SP 2 F, and --CF 2 CF 2 CF 2 COOH 3 , said polymer containing therein at least 80% by weight of the repeating units (a), and having a molecular weight such that the intrinsic viscosity of the polymer is at least 0.1.
Claim 6
Dependent Claim
24 words
A polymer according to claim 3, wherein said (a) repeating units are repeating units of cyclically polymerized perfluoroallyl vinyl ether and/or perfluorobutenyl vinyl ether.
Claim 7
Dependent Claim
62 words
A polymer according to claim 3 or 4, wherein said (b) repeating units are repeating units of a copolymerized comonomer of the following general formula: CF.sub.2 ═CFX where X is selected from fluorine, chlorine, O--CF 2 CF 2 CF 3 , O--CF 2 CF(CF 3 )OCF 2 CF 2 SP 2 F, and O--CF 2 CF 2 CF 2 COOCH 3 ).
Claim 8
Dependent Claim
15 words
A fluorine-containing thermoplastic resinous polymer according to claim 2 wherein the repeating units are: ##STR33##
Claim 9
Dependent Claim
16 words
A fluorine containing thermoplastic resinous polymer according to claim 2 wherein the repeating units are: ##STR34##
Claim 10
Dependent Claim
22 words
A polymer according to claim 2 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and cyclically polymerized perfluorobutenyl vinyl ether.
Claim 11
Dependent Claim
23 words
A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and of CF 2 ═CF 2 .
Claim 12
Dependent Claim
21 words
A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluorobutenyl vinyl ether and of CF 2 ═CFCl.
Claim 13
Dependent Claim
23 words
A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluorobutenyl vinyl ether and of CF 2 ═CF 2 .
Claim 14
Dependent Claim
29 words
A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and of CF 2 ═CF--O--CF 2 CF 2 CF 2 COOCH 3 .
Claim 15
Dependent Claim
34 words
A polymer according to claim 4 which is a terpolymer of cyclically polymerized perfluoroallyl vinyl ether, of CF 2 ═CF--O--CF 2 CF 2 CF 2 COOH 3 and of CF 2 ═CF 2 .
Claim 16
Dependent Claim
31 words
A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluorobutenyl vinyl ether and of CF 2 ═CFOCF 2 CF(CF 3 )OCF 2 CF 2 SO 2 F.
Claim 17
Dependent Claim
27 words
A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and of CF 2 ═CF--O--CF 2 CF 2 CF 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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |