Resinous particles, method for production thereof, and uses ther

Details Resinous particles, method for production thereof, and uses ther Resinous particles, method for production thereof, and uses ther

1996-10-28

1998-08-04

Smith, Jeffrey T.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526215, 526220, C05F 218

Patent

active

057895066

ABSTRACT:
A polymeric monomer (A) having as a main component thereof a (meth)acryl type monomer which is subjected to aqueous suspension polymerization in the presence of a compound (B) which is substantially insoluble in water and sparingly soluble in the polymeric monomer (A). The compound (B) has at least one, preferably two or more, structural units, selected from the group consisting of --SH, --S--S--, --COOH, --NO.sub.2, and --OH. The use of compound (B), in the suspension polymerization of the (meth)acryl type monomer, represses of the production of by-produced minute particles due to sympathetic emulsion polymerization. The suspension polymerization permits production of (meth)acryl type polymer particles having high heat stability and a small range of particle diameters.

REFERENCES:
patent: 2744886 (1956-05-01), Protzman
patent: 4208500 (1980-06-01), Matsuo et al.
patent: 4624973 (1986-11-01), Kuwajjima et al.
patent: 4833179 (1989-05-01), Young et al.

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