Process for producing vinyl chloride polymer with antioxidant

Details Process for producing vinyl chloride polymer with antioxidant Process for producing vinyl chloride polymer with antioxidant

1990-04-12

1992-11-24

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 89, 526210, 526212, 526322, 5263232, C08F 220

Patent

active

051662825

ABSTRACT:
A process for producing a vinyl chloride polymer for matted moldings which comprises performing the suspension polymerization of vinyl chloride monomer or a mixture of vinyl monomers composed mainly of vinyl chloride in an aqueous medium, in the presence of (A) 0.01 to 3 parts by weight of a polyfunctional monomer having two or more ethylenic double bonds in the molecule and (B) 0.00005 to 0.01 part by weight of antioxidant, thereby yielding a vinyl chloride resin composed of 5 to 90% by weight of tetrahydrofuran-insoluble gel fraction, with the remainder being tetrahydrofuran-solubles.

REFERENCES:
patent: 4482684 (1984-11-01), Gardner
patent: 4816539 (1989-03-01), Watanabe

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