Process for preparing sulfur-modified chloroprene polymers

Details Process for preparing sulfur-modified chloroprene polymers Process for preparing sulfur-modified chloroprene polymers

1981-04-01

1987-07-07

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 834

Patent

active

046788484

ABSTRACT:
Sulfur-modified chloroprene polymers and copolymers can be prepared by a free-radical polymerization process in an alkaline, aqueous emulsion, wherein a thiuram disulfide having aliphatic, acyclic or cyclic substituents on both nitrogen atoms, the total number of carbon atoms of those substituents being 12-24, also is present. This process avoids the time-consuming separate peptization step and reduces the capital requirements by eliminating peptization tanks and their associated equipment.

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