Particulate styrene polymers containing blowing agent

Details Particulate styrene polymers containing blowing agent Particulate styrene polymers containing blowing agent

1982-03-10

1983-01-18

Foelak, Morton

Stock material or miscellaneous articles

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

Particulate matter

427222, 4283184, 521 57, 521 88, 521 97, 521146, C08J 922

Patent

active

043692273

ABSTRACT:
Particulate styrene polymers which contain a blowing agent and are surface-coated with from 0.05 to 1% by weight of an ester. The coating agent is a hydroxycarboxylic acid ester, or an ester of a carboxylic acid with an oxyalkylated alcohol; tristearyl citrate is a preferred ester.
The styrene polymers can be used to produce foam moldings, with short mold dwell times and good welding of the foam particles.

REFERENCES:
patent: 2989782 (1961-06-01), Barkhuff, Jr. et al.
patent: 3480570 (1969-11-01), Roberts et al.
patent: 3637538 (1972-01-01), Heald
patent: 3789028 (1974-01-01), Heiskel et al.
patent: 4238570 (1980-12-01), Shibata et al.
"Chemical Abstracts", 89,130509w (1978).

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