公开(公告)号：DE3620683C1

公开(公告)日：1987-07-02

申请号：DE3620683

申请日：1986-06-20

Applicant: BASF AG

Inventor： VOSS HARRO DR ,  HAHN KLAUS DR ,  WALTER MANFRED DR ,  DE DR GRAVE ISIDOOR

IPC: C08J9/16 ,  C08F2/44 ,  C08J9/14 ,  C08J9/22 ,  C08K5/01 ,  C08K5/02 ,  C08L25/04 ,  C08J9/20

Abstract: Particulate styrene polymers containing blowing agents are prepared by a process in which an aliphatic hydrocarbon of 7 to 9 carbon atoms is added in an amount of from 0.01 to 0.5% by weight, based on the styrene polymer, before, during or after the polymerization. The particulate styrene polymers can be processed to foam blocks and moldings having a satisfactory smooth surface.