Process for preparing high bulk density vinyl resins

Details Process for preparing high bulk density vinyl resins Process for preparing high bulk density vinyl resins

1985-05-20

1986-08-19

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

5211091, 521145, 526200, 5263442, C08J 920, C08F 200

Patent

active

046070583

ABSTRACT:
Spherical particles of vinyl resins having high bulk density can be prepared by the suspension polymerization process by using as a dispersant an alkyl hydroxy cellulose having a viscosity of from about 1000 to about 100,000 cps. A suitable dispersant is a hydroxypropyl methyl cellulose polymer having the formula: ##STR1## where n is from about 300 to about 1500.

REFERENCES:
patent: 3879365 (1975-04-01), Greminger et al.
patent: 3917548 (1975-11-01), Harrington
patent: 4143224 (1979-03-01), Klippert et al.
patent: 4206298 (1980-06-01), Reichert et al.
patent: 4208499 (1980-06-01), Maruhashi et al.
patent: 4228264 (1980-10-01), Yamamoto et al.
patent: 4294945 (1981-10-01), Wei
patent: 4525559 (1985-06-01), Sielfeld et al.

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