Coated beads with macromonomer-styrene polymerizate coating

Details Coated beads with macromonomer-styrene polymerizate coating Coated beads with macromonomer-styrene polymerizate coating

1982-03-08

1983-05-31

Lusignan, Michael R.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

427222, 521 54, 521 57, 521 59, 521 60, C08J 914

Patent

active

043861334

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
patent: 4269871 (1981-05-01), Blommers et al.
patent: 4278732 (1981-07-01), Spicuzza

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