Process for producing coated beads with macromonomer-styrene pol

Details Process for producing coated beads with macromonomer-styrene pol Process for producing coated beads with macromonomer-styrene pol

1980-12-23

1982-06-08

Wong, Jr. Harry

Coating processes

Particles, flakes, or granules coated or encapsulated

Resin base

428407, 521148, 525258, 526209, 526293, 526346, 526347, 5263471, B05D 700, C08F21208, C08F23610

Patent

active

043339700

ABSTRACT:
Coated beads which exhibit anti-lumping properties upon pre-expansion and which are useful in the formation of soft expanded articles are prepared by coating initial polystyrene beads, in suspension, with a coating composition comprising styrene and a macromonomer of styrene and isoprene or styrene and butadiene, the coating compositions added to the suspension as an aqueous emulsion containing a catalyst and a polyoxyethylene ether of nonylphenol or octylphenol as surfactant.

REFERENCES:
patent: 4029613 (1977-06-01), Quinlan et al.
patent: 4174425 (1979-11-01), Saito et al.
patent: 4269871 (1981-05-01), Blommors et al.
patent: 4278732 (1981-07-01), Spicuzza

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