BHA in vinyl chloride polymerization

Details BHA in vinyl chloride polymerization BHA in vinyl chloride polymerization

1985-07-12

1987-03-31

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 238

Patent

active

046543929

ABSTRACT:
There is disclosed, in a microsuspension polymerization process for producing homopolymers and copolymers of vinyl chloride, having a dispersion step and a seed polymerization step, the improvement wherein butylated hydroxyanisole (BHA) is added to the dispersion step and, wherein, when necessary to control temperature, additional BHA is added to the seed polymerization step. There is also disclosed a homopolymer or copolymer of vinyl chloride produced by the improved process.

REFERENCES:
patent: 3658778 (1972-04-01), Toyoda et al.
patent: 4189552 (1980-02-01), Kuwata et al.
patent: 4283514 (1981-08-01), Weiner et al.
patent: 4324874 (1982-04-01), Cordes, III et al.
patent: 4361683 (1982-11-01), Dodd et al.

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