Dispersing stabilizer for suspension polymerization of vinyl com

Details Dispersing stabilizer for suspension polymerization of vinyl com Dispersing stabilizer for suspension polymerization of vinyl com

1978-08-01

1980-06-17

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 74, 526200, 526210, 5263442, 526910, C08F 218, C08F 1406

Patent

active

042084997

ABSTRACT:
A dispersing stabilizer for suspension polymerization of vinyl compounds comprising (A) a water-soluble protective colloid and (B) a carbonyl group-containing polyvinyl alcohol having an average degree of hydrolysis of 10 to 90% by mole; the absorbance of a 0.1% by weight aqueous solution of the component (B) being not less than 0.18 at a wavelength of 280 m.mu.. Suspension polymerization of vinyl chloride can be conducted by using the stabilizer without adhesion of scale to a polymerization vessel, and also particles of the obtained vinyl chloride resins have a high porosity and uniform size.

REFERENCES:
patent: 3444270 (1969-05-01), Aliberti et al.
patent: 3592800 (1971-07-01), Oschmann et al.
patent: 3929753 (1975-12-01), Itoh et al.

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