Process for the production of vinyl halide polymers that uses an

Details Process for the production of vinyl halide polymers that uses an Process for the production of vinyl halide polymers that uses an

1982-04-22

1983-08-30

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

524348, 526210, 526330, 526344, 5263442, C08F 602, C08F 1406

Patent

active

044017987

ABSTRACT:
The polymerization of a monomer component that comprises vinyl chloride in an aqueous medium in the presence of a free radical generating polymerization initiator is terminated by introducing into the polymerization reaction mixture when from 70% to 95% of the monomer component has been polymerized from 0.01% to 0.10% by weight, based on the weight of the monomer component, of a chain-terminating agent that is an alkyl-substituted trisphenol, such as 1,1,3-tris(2-methyl-4-hydroxy-5-tert.butylphenyl)butane.

REFERENCES:
patent: 3808184 (1974-04-01), Sheth et al.
patent: 3985721 (1976-10-01), Petit

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