Verfahren zur Herstellung kautschukartiger Mischpolymerisate von 1,3-Butadien oder Isopren mit Styrol,申请号DE1967S113002-传众专利搜索

Verfahren zur Herstellung kautschukartiger Mischpolymerisate von 1,3-Butadien oder Isopren mit Styrol

申请公布号：DE1745424(A1)

申请号：DE1967S113002

申请日期：1967.11.27

申请公布日期：1971.09.02

申请人：

SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V.

发明人：MOSTERT,SIMON;VAN AMERONGEN,GERRIT JAN

分类号：C08F236/10

主分类号：C08F236/10

摘要：1,136,189. Styrene - diene copolymers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 27 Nov., 1967 [28 Nov., 1966], No. 53797/67. Heading C3P. Random copolymers of butadiene-1,3, or isoprene with styrene made by continuously copolymerizing the monomers in solution using a lithium hydrocarbyl compound and (1) maintaining the composition of the reactants constant, (2) maintaining the ratio by weight of the diene and styrene between 90/10 and 55/45, (3) maintaining an average time of reactants inside the reaction zone of less than 2 hours, and (4) keeping the monomer concentration of the reacting mixture in the zone to less than 3% wt., and (5) the polymer concentration between 5 and 25% by weight. The mix leaving the reaction zone may be fed to another reactor in which any unconverted monomer is polymerized, e.g. to form polystyrene blocks at the end of the random copolymer chains. The copolymerization is conventional, and the copolymers recovered by steam treatment after addition of an antioxidant. The copolymers may be sulphur vulcanized.