US5117480A
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Polymer composition and optical fiber having cladding composed of that composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1991-01-18
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Granted: 1992-05-26
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Expires: 2011-01-18
Abstract
Abstract Disclosed is a polymer composition comprising (I) 60 to 99.8 wt. % of an amorphous copolymer comprising (a) units derived from perfluoro-2,2-dimethyl-1,3-dioxole and (b) units derived from at least one ethylenically unsaturated monomer selected from ethylene, tetrafluoroethylene, chlorotrifluoroethylene, and CF 2 =CFOCF 3 , and (II) 0.2 to 40 wt. % of a compound having a hydrocarbon group containing at least one fluorine atom and at least one functional group selected from --OH, --SR, --COOH, --SO--, --SO 2 --, --CONH--, --COO--CO--, --CONHCO--, --COO--, --CN, --NCO, --CO--, --HCOO--, --NH 2 --, --NH--, ═N, --SO 3 H, --NHNH 2 , --CONH 2 , --CH═CH 2 , --CH═CH--, (RO) n X 3-n Si--, wherein R is a C 1-5 alkyl group, n is a number of 0 to 3, and X is halogen or a C 1-5 alkyl group. The polymer composition is useful for a plastic cladding of an optical fiber.
Inventors
- 👤 Takashi Yamamoto
- 👤 Tsuruyoshi Matsumoto
- 👤 Tadao Kobayashi
- 👤 Katsuhiko Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:01
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; G; G02; G02B; G02B6/00; G02B6/02; G02B6/02033; C08K; C08K5/00; C08K5/0008; G02B1/00; G02B1/04; G02B1/045; G02B1/048
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
196 words
An optical fiber having a light transmitting core and a plastic cladding which is composed of a polymer composition consisting of (I) 60 to 99.8% by weight, based on the weight of the polymer composition of an amorphous copolymer comprising (a) units derived from perfluoro-2,2-dimethyl-1,3-dioxole and (b) units derived from at least one ethylenically unsaturated monomer selected from the group consisting of ethylene, tetrafluoroethylene, chlorotrifluoroethylene and a compound represented by the formula CF 2 ═CFOCF 3 , and (II) 0.2 to 40% by weight, based on the weight of the polymer composition, of an aliphatic hydrocarbon compound, an alicyclic hydrocarbon compound or an aromatic hydrocarbon compound substituted by at least one fluorine atom and a functional group selected from the group consisting of --OH, --SR, --COOH, --SO--, --SO 2 --, --CONH--, --COO--CO--, --CONHCO--, --COO--, --CN, --NCO, --CO--, HCOO--, --NH 2 , --NH--, ═C═NH, --SO 3 H, --NHNH 2 , --CONH 2 , and (RO) n X 3-n Si--, wherein R is an alkyl group of 1 to 5 carbon atoms, n is 0 or an integer of 1 to 3, and X is a halogen atom or an alkyl group of 1 to 5 carbon atoms.
Claim 2
Dependent Claim
196 words
An optical fiber having a light transmitting core and a plastic cladding which is composed of a polymer composition consisting of (I) 60 to 99.8% by weight, based on the weight of the polymer composition of an amorphous copolymer comprising (a) units derived from perfluoro-2,2-dimethyl-1,3-dioxole and (b) units derived from at least one ethylenically unsaturated monomer selected from the group consisting of ethylene, tetrafluoroethylene, chlorotrifluoroethylene and a compound represented by the formula CF 2 ═CFOCF 3 , and (II) 0.2 to 40% by weight, based on the weight of the polymer composition, of an aliphatic hydrocarbon compound, an alicyclic hydrocarbon compound or an aromatic hydrocarbon compound substituted by at least one fluorine atom and a functional group selected from the group consisting of --OH, --SR, --COOH, --SO--, --SO 2 --, --CONH--, --COO--CO--, --CONHCO--, --COO--, --CN, --NCO, --CO--, HCOO--, --NH 2 , --NH--, ═C═NH, --SO 3 H, --NHNH 2 , --CONH 2 , and (RO) n X 3-n Si--, wherein R is an alkyl group of 1 to 5 carbon atoms, n is 0 or an integer of 1 to 3, and X is a halogen atom or an alkyl group of 1 to 5 carbon atoms.
Claim 3
Dependent Claim
40 words
An optical fiber according to claim 1, wherein the amount of the compound having a fluorine atom-containing hydrocarbon group and at least one functional group is from 0.5 to 5% by weight based on the weight of the polymer composition.
Claim 4
Dependent Claim
56 words
An optical fiber according to claim 1, wherein the amorphous copolymer (I) comprises (a) 10 to 30% by mole of units derived from perfluoro-2,2-dimethyl-1,3-dioxole and (b) 90 to 20% by mole of units derived from at least one ethylenically unsaturated monomer selected from the group consisting of ethylene, tetrafluoroethylene, chlorotrifluoroethylene and CF 2 ═CFOCF 3 .
Claim 5
Dependent Claim
252 words
An optical fiber according to claim 1, wherein said compound of Formula (II) is: C 6 F 13 CH 2 CH 2 OH, C 9 F 19 CH 2 OH, C 10 F 21 CH 2 CH 2 OH, HOCH 2 (CF 2 ) 3 CH 2 OH, C 6 F 13 COOH, C 9 F 19 COOH, C 8 H 17 CH 2 CH 2 COOH, HOOC (CF 2 ) 4 COOH, (C 7 F 15 CO) 2 O, C 8 F 17 SO 2 NHCH 2 CH 3 , C 8 F 17 SO 2 N(C 2 H 5 )CH 2 CH 2 OH, C 8 F 17 SO 3 H, C 6 F 13 CH 2 CH 2 SO 3 H, C 6 F 13 SH, C 8 F 17 NCO, C 8 F 17 COOC 2 H 5 , C 3 F 7 OCF(CF 3 )COOCH 3 , C 3 F 7 O[CF(CF 3 )CF 2 O]CF(CF 3 )COOCH 3 , CF 7 O[CF(CF 3 )CF 2 O]CF(CF 3 )COOCH 3 , (C 5 F 11 ) 3 N, C 7 H 15 CH 2 NH 2 , C 7 F 15 CONH 2 , C 6 F 5 NHNH 2 , C 6 F 5 SH, C 6 F 5 COCH 3 , H 2 NCOCF 2 CF 2 CONH 2 , CF 3 CH 2 CH 2 Si(OCH 3 ) 3 , or C 8 F 17 CH 2 CH 2 Si(OCH 3 ) 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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |