Process for obtaining copolymers with a very low content residua

Details Process for obtaining copolymers with a very low content residua Process for obtaining copolymers with a very low content residua

1990-11-14

1993-04-06

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263401, 528483, C08F2366

Patent

active

052004856

ABSTRACT:
A process for forming a copolymer of butadiene and other monomers such as styrene is disclosed wherein the final product is characterized by a low residual butadiene content. The process comprises: (a) charging a reaction vessel with butadiene and styrene; (b) initiating said copolymerization reaction; (c) after the exotherm phase of said reaction, purging said reaction vessel with an inert gas while heating said reaction vessel to a final polymerization temperature.

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patent: 4237257 (1980-12-01), Moriya et al.
patent: 4525560 (1985-06-01), Smith
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