公开(公告)号：DE3122180A1

公开(公告)日：1982-12-23

申请号：DE3122180

申请日：1981-06-04

Applicant: BASF AG

Inventor： HAMBRECHT JUERGEN DIPL CHEM DR ,  LINDENSCHMIDT GERHARD DIPL CHE ,  JUNG RUDOLF H DIPL CHEM DR ,  SCHILLINGER BERNHARD DIPL ING ,  KRESS GERHARD DIPL ING ,  ECHTE ADOLF DIPL CHEM DR ,  JENNE HELMUT DIPL CHEM DR

IPC: C08J9/12 ,  B29D27/00 ,  C08L25/16 ,  C08L33/20

Abstract: The invention relates to a process for the production of foams by melting a thermoplastic, mixing the melt with a volatile blowing agent under a pressure of from 25 to 250 bar, decompressing the mixture to atmospheric pressure, and cooling the foam. The plastic employed is a copolymer comprising from 67 to 73 % by weight of alpha -methylstyrene and from 33 to 27 % by weight of acrylonitrile having a viscosity index of from 45 to 70 ml.g . The resultant foams of high heat distortion resistance can be used as insulating materials.

公开(公告)号：DE3131446A1

公开(公告)日：1983-02-24

申请号：DE3131446

申请日：1981-08-07

Applicant: BASF AG

Inventor： HAHN KLAUS DIPL CHEM DR ,  WEBER HEINZ DIPL CHEM DR ,  GUENTHER WOLFGANG DIPL CHEM DR ,  SCHILLINGER BERNHARD DIPL ING ,  WEBER REINHOLD DIPL ING ,  FRIED MICHAEL DIPL CHEM DR ,  WEILBACHER MANFRED DIPL CHEM D ,  ZUERN LUDWIG DIPL CHEM DR

IPC: C08J9/00 ,  C08J9/14 ,  C08K3/18 ,  C08K5/09 ,  C08L25/06 ,  B29D27/00