Chloroprene polymer composition

Details Chloroprene polymer composition Chloroprene polymer composition

1979-06-14

1980-11-18

Wong, Jr., Harry

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

Synthetic resins

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

260 297D, 526295, C08L 1100

Patent

active

042347041

ABSTRACT:
A chloroprene polymer composition comprises a benzene soluble chloroprene polymer (A) and a gel chloroprene polymer (B) at a ratio ranging from 20:1 to 1:1, wherein the benzene soluble chloroprene polymer (A) is obtained by an aqueous emulsion polymerization of chloroprene or a mixture of chloroprene and a comonomer with 0.05 to 5.0 wt. % of a molecular weight regulator in which the polymerization in the presence of effective amount of the molecular weight regulator is carried out to reach a conversion of 40 to 60% and then, 40 to 70 wt. % of the molecular weight regulator incorporated at the initiation of the polymerization is incorporated and the polymerization is continued to give a conversion of higher than 80% and the gel chloroprene polymer (B) is obtained by an aqueous emulsion polymerization of chloroprene or a mixture of chloroprene and a polyfunctional monomer.

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