Process for producing high molecular weight vinyl copolymers

Details Process for producing high molecular weight vinyl copolymers Process for producing high molecular weight vinyl copolymers

1985-07-26

1986-06-03

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526265, C08F 224

Patent

active

045930821

ABSTRACT:
Disclosed is a method of producing high molecular weight copolymers from vinyl monomers such as vinylpyridine and styrene by emulsion polymerization which comprises combining the monomers with a particular surfactant, a polymerization initiator in an aqueous medium at a solids level of about 5-50% by weight, and carrying out the polymerization at a pH of about 10-14 at a temperature of about 45.degree.-90.degree. C. until the conversion is greater than 90%.

REFERENCES:
patent: 2862902 (1958-12-01), Pritchard
patent: 3718631 (1973-02-01), Grosmangin

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