Antilumping expanding styrene polymers

Details Antilumping expanding styrene polymers Antilumping expanding styrene polymers

1975-12-29

1977-06-14

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4243, 428407, C08J 922

Patent

active

040296130

ABSTRACT:
Expandable styrene polymer particles are surface-coated with calcium polysilicate to prevent the particles from lumping together during expansion. The coating is applied by adding 0.02-0.05 part of calcium polysilicate to an aqueous suspension containing 100 parts of polymer particles subsequent to impregnating the mixture with a blowing agent, or by dry-blending polymer particles with the polysilicate.

REFERENCES:
patent: 2861898 (1958-11-01), Platzer
patent: 3304274 (1967-02-01), Eng
patent: 3444104 (1969-05-01), Immel

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