Aqueous free radical emulsion polymerization

Details Aqueous free radical emulsion polymerization Aqueous free radical emulsion polymerization

1978-05-10

1979-03-20

Lilling, Herbert J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 80, 526201, 526208, 526224, 526340, 260 2975Q, C08F 222, C08F 400

Patent

active

041454944

ABSTRACT:
In the aqueous emulsion free radical polymerization of dienes and copolymerization of dienes and vinyl monomers using mercaptan modifiers there is added at at least 75% conversion a large amount of mercaptan modifier as compared to that previously added and the polymerization is stopped at about 90-99+% conversion to provide processable polymers having a reduced amount of or no gel.

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