Preparation of matte vinyl chloride polymer and composition ther

Details Preparation of matte vinyl chloride polymer and composition ther Preparation of matte vinyl chloride polymer and composition ther

1995-11-09

1997-03-25

Zemel, Irina S.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526344, 5263442, C08F 220, C08F21406

Patent

active

056145934

ABSTRACT:
In preparing a matte vinyl chloride polymer by suspension polymerizing a monomeric charge comprising monomeric vinyl chloride in an aqueous medium, polymerization is started in the presence of 0.05-0.25 part by weight of diallyl phthalate per 100 parts by weight of the monomeric charge, and polymerization is continued while adding 0.01-0.15 part by weight of 1,6-hexanediol di(meth)acrylate per 100 parts by weight of the monomeric charge when the rate of polymerization is in the range of 20-60%. There is produced a matte vinyl chloride-diallyl phthalate copolymer having a tetrahydrofuran-insoluble gel content of 0.5-2.5% by weight in a reproducible manner. A composition prepared by blending the copolymer with a plasticizer has minimized fish-eyes and improved matting effect.

REFERENCES:
patent: 4299941 (1981-11-01), Narisawa
patent: 4816539 (1989-03-01), Wanatabe
patent: 5376747 (1994-12-01), Shigemitsu
patent: 5448004 (1995-09-01), Amano

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