EP0128516A1
Expired / Lapsed
EP
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Optical fibre
Assignee: Daikin Industries Ltd
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Filing: 1984-06-06
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Granted: —
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Expires: 2004-06-06
Abstract
Abstract This invention relates to a fluorine-containing polymer comprising a polymer which has a structural unit represented by the formula wherein Rf is afluorine-containing group.
Inventors
- 👤 Akira Ohmori
- 👤 Nobuyuki Tomihashi
- 👤 Takahiro Kitahara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 12:33
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/105; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22; C08F220/00; C08F220/02; C08F220/10; C08F220/22; C08F220/24; G; G02; G02B; G02B6/00; G02B6/02; G02B6/02033
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
21 words
A fluorine-containing polymer comprising a polymer which has a structural unit represented by the formula wherein Rf is a fluorine-containing group.
Claim 2
Dependent Claim
21 words
A fluorine-containing polymer comprising a polymer which has a structural unit represented by the formula wherein Rf is a fluorine-containing group.
Claim 3
Dependent Claim
22 words
A fluorine-containing polymer according to claim 1 wherein the polymer is a homopolymer having the structural unit represented by the formula (a).
Claim 4
Dependent Claim
42 words
A fluorine-containing polymer is a copolymer consisting of the structural unit of the formula (a) and a structural unit represented by the formula wherein R is hydrogen, fluorine or lower aliphatic group and R 2 is hydrogen or a lower aliphatic group.
Claim 5
Dependent Claim
42 words
A fluorine-containing polymer is a copolymer consisting of the structural unit of the formula (a) and a structural unit represented by the formula wherein R is hydrogen, fluorine or lower aliphatic group and R 2 is hydrogen or a lower aliphatic group.
Claim 6
Dependent Claim
36 words
An optical material comprising a fluorine- containing polymer which has a structural unit represented by the formula wherein Rf is a fluorine-containing aliphatic group in an amount of at least 5 mole % of the polymer.
Claim 7
Dependent Claim
36 words
An optical material comprising a fluorine- containing polymer which has a structural unit represented by the formula wherein Rf is a fluorine-containing aliphatic group in an amount of at least 5 mole % of the polymer.
Claim 8
Dependent Claim
22 words
An optical material according to claim 4 wherein the fluorine-containing polymer is a homopolymer of the structural unit of the formula (a).
Claim 9
Dependent Claim
70 words
An optical material according to claim 4 wherein the fluorine-containing polymer is a copolymer which has the structural unit of the formula (a) in an amount of at least 5 mole % and a structural unit represented by the formula wherein R 1 is hydrogen, fluorine or lower aliphatic group and R 2 is hydrogen or a lower aliphatic group in an amount of not more than 95 mole %.
References Cited (Backward Citations)
US2877207A
Cited
FR2444052A1
Cited
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