Process for producing high-quality vinyl chloride polymers using

Details Process for producing high-quality vinyl chloride polymers using Process for producing high-quality vinyl chloride polymers using

1993-06-11

1995-01-03

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263442, C08F 438, C08F 220

Patent

active

053787811

ABSTRACT:
A process for producing a vinyl chloride polymer comprises subjecting a vinyl chloride monomer or a mixture comprising a major proportion of a vinyl chloride monomer along with at least one co-polymerizable monomer to suspension polymerization in an aqueous medium in the presence of a monomer-soluble polymerization initiator. The monomer-soluble polymerization initiator comprises, in combination, (A) a compound which is free of a benzene ring, a cyclohexyl group and an alkoxy group in the molecule and whose 10 hours half-life temperature at a concentration of 0.1 mole/liter of benzene is in the range of 30.degree. to 50.degree. C. and (B) 1-cyclohexyl-1-methylethyl peroxyneodecanoate.

REFERENCES:
patent: 3687867 (1972-08-01), Lewis
patent: 4914169 (1990-04-01), Suyama

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