EXPANDABLE STYRENE POLYMER PARTICLE COMPOSITION AND A METHOD FOR ARING THE SAME

摘要

Expandable styrene polymer particle compositions containing an expanding agent which is volatilizable and does not dissolve or may slightly swell the styrene polymer particles and a small amount of sulfur compound having the following general formula: in which, R1 and R2 which may be the same or different are selected from lower alkyl, aralkyl and aryl groups, or R1 and R2 may be joined together to form an alkylene group. R3 is a metal atom equivalent to mono-valent, ammonium or organic amine which are formable soluble salt in organic solvent, or a group , wherein n is an integer of from 0 to 5 and R1 and R2 are the same as the above.