Method of obtaining small particle size polymers and copolymers

Details Method of obtaining small particle size polymers and copolymers Method of obtaining small particle size polymers and copolymers

1975-07-21

1977-06-14

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526194, 526212, 526213, 526344, 526345, 526909, C08F 202, C08F 1406

Patent

active

040298639

ABSTRACT:
In a process of bulk vinyl chloride polymerization involving a two stage stationary reaction zone polymerization wherein high speed agitation is used during the first stage and slow speed agitation is used in the second stage, the polymerization in the first stage is conducted in contact with an organic or inorganic, inert, fine particle size material, solid at least at reaction temperatures and insoluble in the monomer or monomers used, or an anionic, cationic, or nonionic surfactant, or mixtures thereof. By the present polymerization method using economical conventional agitation equipment, small particle size polyvinyl chloride homopolymers or copolymers are produced which are useful as extender resins in plastisols.

REFERENCES:
patent: 3151103 (1964-09-01), Heckmaier et al.
patent: 3522227 (1970-07-01), Thomas

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