Fluorinated diene compound and fluoropolymer, and methods...

Details Fluorinated diene compound and fluoropolymer, and methods... Fluorinated diene compound and fluoropolymer, and methods...

2005-06-28

2005-06-28

Wu, David W. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S072000, C526S253000, C526S247000, C568S683000

Reexamination Certificate

active

06911513

ABSTRACT:
A novel fluoropolymer which can be an optical resin material having a low refractive index and excellent heat resistance, and a novel fluorinated diene compound having two unsaturated bonds, capable of presenting such a fluoropolymer, are presented. Further, by virtue of the low refractive index and excellent heat resistance, the polymer presents a high performance optical transmitter and a plastic optical fiber.A fluorinated diene compound represented by CF2═CFCF(ORf)CF2OCF═CF2(wherein Rfis a perfluoroalkyl group such as a trifluoromethyl group), and a fluoropolymer thereof. Further, an optical transmitter made by using such a fluoropolymer, and a plastic optical fiber having a core comprising such a fluoropolymer and a fluorinated low molecular weight compound contained therein as a refractive index-increasing agent.

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