Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1998-03-02
2000-11-21
Woodward, Ana
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526202, 526213, 526215, C08F 220
Patent
active
06150484&
ABSTRACT:
The present invention is a process for producing a polyvinyl chloride paste blending resin comprising polymerizing a vinyl chloride-based monomer by a suspension polymerization in an aqueous medium, wherein as a suspending agent, both (A) and (B) are used in a mixing weight ratio (A)/(B) of 99/1 to 50/50, and a total amount of said (A) and said (B) is 0.1 to 1.0 part by weight based on 100 parts by weight of the vinyl chloride-based monomer, said (A) being a partially hydrolyzed water-soluble poly(vinyl alcohol) having a viscosity at 20.degree. C. of 4% aqueous solution by weight of 20 to 110 cps and the degree of hydrolysis of 86 to 99 mol %, and said (B) being a partially hydrolyzed water-soluble poly(vinyl alcohol) having a viscosity at 20.degree. C. of 4% aqueous solution by weight of 5 to 10 cps and the degree of hydrolysis of 70 to 80 mol %.
REFERENCES:
patent: 4319012 (1982-03-01), Morningstar
patent: 4404339 (1983-09-01), Bush et al.
patent: 5089575 (1992-02-01), Arima et al.
patent: 5204421 (1993-04-01), Amano et al.
patent: 5849840 (1998-12-01), Maruhashi et al.
patent: 5883209 (1999-03-01), Nakano et al.
Kobayashi Teiji
Koike Taizou
Kubo Masahiro
Yamamoto Taizou
Kaneka Corporation
Woodward Ana
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