Cladding material for optical fiber

Details Cladding material for optical fiber Cladding material for optical fiber

C - Chemistry, Metallurgy

08

F

402/412, 402/513

C08F 220/22 (2006.01) C03C 25/10 (2006.01) D01F 8/10 (2006.01)

Patent

CA 1335022

A cladding material for an optical fiber is de- scribed, which is made of a polymer comprised of (A) 10 - 90 wt.% of a long-chain fluoroalkyl group-containing monomer of the formula: Image wherein F is F, CH3 or CF3 , and n is an integer from 5 to 11, (B) 5 - 90 wt.% of a short-chain fluoroalkyl group- containing monomer of the formula: Image wherein Y is as defined above, X is F, CH3 or CF3 , and m is an integer of from 1 to 4, and (C) 0 - 50 wt.% of other copolymerizable monomer. The melt flow index indicating the amount in gram of the polymer extruded for 10 minutes from a nozzle with an orifice having an inner diameter of 2 mm and a length of 8 mm under the conditions of a temperature of 230°C and a load of 5 kg, is not larger than 30.

573338

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