公开(公告)号：DE3108100A1

公开(公告)日：1982-09-16

申请号：DE3108100

申请日：1981-03-04

Applicant: BASF AG

Inventor： MESSMER KARLHEINZ DIPL CHEM DR ,  FISCHER HERMANN DIPL CHEM DR ,  HARTMANN HEINRICH DIPL CHEM DR ,  DENZINGER WALTER ,  SCHNEIDER ROLF DIPL CHEM DR ,  WULZ KLAUS DIPL CHEM DR ,  RAUBENHEIMER HANS-JUERGEN ING

IPC: C08F20/00 ,  C08F20/02 ,  C08F210/00 ,  C08F222/06 ,  C09K23/52 ,  C11D3/37 ,  D21H17/43 ,  D21H19/58 ,  C08F216/12 ,  C08F220/00 ,  B01F17/52 ,  D21H3/38

Abstract: Maleic anhydride copolymer powders are prepared by a process wherein a solution or dispersion of maleic anhydride in an alkyl vinyl ether and/or an alkene, containing from 3 to 25 moles of the alkyl vinyl ether and/or alkene per mole of maleic anhydride, is brought into contact with a powder bed under polymerization conditions, and is polymerized in the bed while the reaction mass is circulated and the powder state is maintained, and the heat generated during polymerization is removed by evaporating excess monomer which boils lower than maleic anhydride.

公开(公告)号：DE2941978A1

公开(公告)日：1981-04-30

申请号：DE2941978

申请日：1979-10-17

Applicant: BASF AG

Inventor： MESSMER KARLHEINZ DIPL CHEM DR ,  STEDEFEDER JOACHIM DIPL CHEM D ,  FISCHER HERMANN DIPL CHEM DR ,  HARTMANN HEINRICH DIPL CHEM DR

IPC: C08F2/00 ,  C08F2/06 ,  C08F2/14 ,  C08F2/34