Process for producing styrenic polymer beads of preferred bead s

Details Process for producing styrenic polymer beads of preferred bead s Process for producing styrenic polymer beads of preferred bead s

1980-12-23

1982-06-08

Wong, Jr., Harry

Coating processes

Particles, flakes, or granules coated or encapsulated

Resin base

428407, 525258, 526209, 526293, 526346, 526347, 5263471, B05D 700, C08F11208

Patent

active

043339697

ABSTRACT:
Styrenic polymer beads of a preferred size are produced from styrenic polymer beads of a smaller size by forming an aqueous suspension of the styrenic polymer beads and adding thereto, under polymerization conditions, an aqueous emulsion formed by admixing styrenic monomer and a catalyst therefor with water containing a nonionic surfactant that is an ethylene oxide condensate of an alkylphenol, which contains at least fifty moles of ethylene oxide per mole of alkylphenol. The beads of preferred size are formed without formation of fine styrenic polymer particles and without significant amounts of clusters of beads.

REFERENCES:
patent: 3442880 (1969-05-01), White
patent: 3442881 (1969-05-01), Jahn et al.
patent: 3922255 (1975-11-01), Koestler et al.
patent: 4017670 (1977-04-01), Spicuzza et al.
patent: 4170699 (1979-10-01), Wright
patent: 4174425 (1979-11-01), Saito et al.

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