公开(公告)号：GB1063056A

公开(公告)日：1967-03-30

申请号：GB2710664

申请日：1964-07-01

Applicant: BASF AG

Inventor： HERRLE KARL ,  LESS FRITZ

IPC: C08F2/08 ,  C08F257/02 ,  C08F261/06 ,  C08F263/02 ,  C08F291/00

Abstract: Finely divided copolymers of maleic anhydride are produced by polymerizing a mixture of maleic anhydride and a vinyl ether of a C1- 8 alcohol and/or a vinyl ester of a C1- 8 carboxylic acid in an inert organic liquid in which the monomers but not the copolymer are soluble, with a free radical polymerization initiator and in the presence of a polystyrene, a copolymer of styrene (at least 50%) and an acrylic ester, polyvinyl methyl ether or a polyvinyl ester of a saturated C1- 3 carboxylic acid. The organic liquid may be a saturated aliphatic or cycloaliphatic, or aromatic hydrocarbon. The vinyl ether may be vinyl-(cyclohexyl, diisopropyl carbinol, 2-ethylhexyl, -iso- or n-butyl or ethyl ether and the ester may be vinyl acetate (caprylate or propionate). The free radical initiator may be benzoyl peroxide or azodiisobutyro-nitrile. The copolymer may be treated with ammonia gas to form a hemi-amide ammonium salt.

公开(公告)号：FR1400133A

公开(公告)日：1965-05-21

申请号：FR980450

申请日：1964-07-02

Applicant: BASF AG

Inventor： HERRLE KARL ,  LESS FRITZ

IPC: C08F2/08 ,  C08F291/00

公开(公告)号：CA815097A

公开(公告)日：1969-06-10

申请号：CA815097D

Applicant: BASF AG

Inventor： POHLEMANN HEINZ ,  STEPHAN ALFRED ,  REINBOLD IMMO ,  WESSLAU HERMANN ,  LESS FRITZ ,  SPOOR HERBERT