Method of preparing vinyl chloride polymers and copolymers of im

Details Method of preparing vinyl chloride polymers and copolymers of im Method of preparing vinyl chloride polymers and copolymers of im

1995-08-03

1997-09-09

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

523334, 524386, 524387, 526209, 528495, 528496, C08F 200

Patent

active

056658362

ABSTRACT:
A method of producing suspension polymerized vinyl chloride polymers or copolymers of improved flowability by polymerizing vinyl chloride monomers alone, or in a mixture with other monomers, in an aqueous medium, to form a slurry of polymer suspended in said aqueous medium. After removing unreacted monomers, a polyhydric alcohol is added to the slurry containing the suspension polymerized polymer or to a product obtained after the dewatering of the slurry, in an amount of 0.001 to 0.5 parts by weight based on 100 parts by weight of the vinyl chloride polymer or copolymer suspended in the slurry.

REFERENCES:
patent: 4015064 (1977-03-01), Feldman et al.
patent: 4246168 (1981-01-01), Sorenson
patent: 4604419 (1986-08-01), Smallwood
patent: 4885333 (1989-12-01), Amano et al.

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