Chloroprene rubber composition and chloroprene rubber compositio

Details Chloroprene rubber composition and chloroprene rubber compositio Chloroprene rubber composition and chloroprene rubber compositio

1995-11-22

1997-12-16

Warzel, Mark L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08L 1100

Patent

active

056986335

ABSTRACT:
A chloroprene rubber composition comprising the following polymers A and B in such a proportion that A is from 20 to 70 wt % and B is from 30 to 80 wt %:
A: a chloroprene polymer obtained by polymerization of chloroprene containing from 0 to 50 wt % of a comonomer copolymerizable with chloroprene, said polymer having a number average molecular weight of from 500 to 20,000; and B: a chloroprene polymer obtained by polymerization of chloroprene containing from 0 to 50 wt % of a comonomer copolymerizable with chloroprene, whereby with a 0.1 wt % tetrahydrofuran solution of said polymer, the weight of the polymer permeated through a filter having a pore diameter of 0.50 .mu.m is less than 0.90 time of the weight of the polymer permeated through a filter having a pore diameter of 1.0 .mu.m.

REFERENCES:
Chemical Patents Index, Documentation Abstracts Journal; Derwent Publications Ltd.; London, GB; English Abstract J63245449-A.

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