公开(公告)号：DE3723301A1

公开(公告)日：1989-01-26

申请号：DE3723301

申请日：1987-07-15

Applicant: BASF AG

Inventor： WEBER REINHOLD ,  ZUERN LUDWIG DR ,  WEILBACHER MANFRED DR

IPC: B29C47/00 ,  B29K25/00 ,  B29K105/04 ,  C08J9/12 ,  C08J9/14 ,  C08L25/04

Abstract: Closed-celled foams of high compressive strength are obtained by extruding a mixture of a styrene polymer and from 8 to 16% by weight of a blowing agent mixture containing from 2 to 20% by weight of ethyl chloride, from 2 to 20% by weight of carbon dioxide, from 20 to 80% by weight of dichlorodifluoromethane and from 10 to 60% by weight of monochlorodifluoromethane.