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.
申请公布号
DE2659403(C2)
申请公布日期
1986.12.11
申请号
DE19762659403
申请日期
1976.12.29
申请人
ARCO POLYMERS, INC., PHILADELPHIA, PA., US
发明人
QUINLAN, JOHN JOSEPH, ATCO, N.J., US;GARLAND, JAMES JOSEPH;GRANDA, JOSE ESTEBAN, ALIQUIPPA, PA., US
