Multi-stage anionic dispersion homopolymerization to form microp

Details Multi-stage anionic dispersion homopolymerization to form microp Multi-stage anionic dispersion homopolymerization to form microp

1987-12-29

1989-05-09

Smith, Howard J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 87, 526201, 526346, 526909, C08F 214, C08F 448

Patent

active

048291358

ABSTRACT:
Styrene or other anionically polymerizable monomer is anionically homopolymerized in a dispersion using a non-solvent, e.g., hexane using three or more stages to obtain spherical microparticles, e.g., 2-5 microns, with a narrow size distribution.

REFERENCES:
patent: 3169948 (1965-02-01), Hardy
patent: 3402160 (1968-09-01), Hayes
patent: 3770712 (1973-11-01), Schwab
patent: 4247434 (1981-01-01), Lovelace et al.
patent: 4386125 (1983-05-01), Shiraki et al.

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