FLUORINE−CONTAINING DIENE COMPOUNDS, FLUOROPOLYMERS AND PROCESSES FOR PRODUCTION OF BOTH

Title:

FLUORINE−CONTAINING DIENE COMPOUNDS, FLUOROPOLYMERS AND PROCESSES FOR PRODUCTION OF BOTH

Document Type and Number:

WIPO Patent Application WO/2003/037838

Kind Code:

A1

Abstract:

The invention provides novel fluoropolymers capable of forming optical elements having low refractive indexes and excellent heat resistance&semi novel fluorine−containing diene compounds having two unsaturated bonds capable of giving the above fluoropolymers&semi and light transmitters and plastic optical fibers made by using the fluoropolymers, which exhibit high performance by virtue of the low refractive indexes and excellent heat resistance, specifically, fluorine−containing diene compounds represented by the general formula: CF₂=CFCF(OR^f)CF₂OCF=CF₂ [wherein R^f is perfluoroalkyl such as trifluoromethyl]&semi fluoropolymers of the diene compounds&semi light transmitters made by using the fluoropolymers&semi and plastic optical fibers wherein the core is made of a composition comprising a fluoropolymer described above and a low−molecular fluorine compound serving to enhance the refractive index.

Inventors:

KASHIWAGI KIMIAKI (JP)
OGAWA GEN (JP)
OKAZOE TAKASHI (JP)
WATANABE KUNIO (JP)
MUROTANI EISUKE (JP)
OHARU KAZUYA (JP)

Application Number:

PCT/JP2002/011311

Publication Date:

May 08, 2003

Filing Date:

October 30, 2002

Export Citation:

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Assignee:

ASAHI GLASS CO LTD (JP)
KASHIWAGI KIMIAKI (JP)
OGAWA GEN (JP)
OKAZOE TAKASHI (JP)
WATANABE KUNIO (JP)
MUROTANI EISUKE (JP)
OHARU KAZUYA (JP)

International Classes:

C07C43/17; C08F16/32; C08F214/18; G02B1/04; (IPC1-7): C07C43/17; C07C41/24; C08L29/10; C08F216/12; G02B6/00

Foreign References:

JP2000081519A	2000-03-21
JPH01143843A	1989-06-06

Other References: