| 摘要 |
<p>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 containing compound having the general formula: R1S PARALLEL ANGLE N- C- S- R3 R2 wherein, R1 and R2 are the same or different lower alkyl, aralkyl or aryl groups, R1 and R2 may be joined together to form an alkylene group, and R3 is a metal ion, ammonium or organic amine each of which form soluble salts in an organic solvent, or a group R1 -(S)n-CS-N ANGLE , R2 wherein n is an integer of from 0 to 5 and R1 and R2 are the same as the above.</p> |
