发明名称 Process for preparing isobutene homopolymers or copolymers
摘要 Preparation of isobutene homopolymers or copolymers having a number average molecular weight of from 500 to 5 000 000 by polymerization of isobutene or an isobutene-comprising monomer mixture in the presence of a Lewis acid or a complex comprising a Lewis acid as polymerization catalyst, wherein the polymerization is carried out in the presence of at least one hemiacetal or full acetal which can be obtained by protic acid-catalyzed reaction of at least one C1-C12-hydrocarbyl alcohol with at least one aldehyde or ketone having from 1 to 12 carbon atoms.
申请公布号 US9458262(B2) 申请公布日期 2016.10.04
申请号 US201213655839 申请日期 2012.10.19
申请人 BASF SE 发明人 Koenig Hannah Maria;Urban Rainer;Muehlbach Klaus;Wettling Thomas;Rachwalsky Uwe;Hirsch Stefan;Berg Anne;Mach Helmut
分类号 C08F10/10;C08F210/10;C08F110/10 主分类号 C08F10/10
代理机构 Oblon, McClelland, Maier & Neustadt, L.L.P. 代理人 Oblon, McClelland, Maier & Neustadt, L.L.P.
主权项 1. A process for preparing an isobutene homopolymer or copolymer, the process comprising: reacting at least one C1-C12-hydrocarbyl alcohol with at least one aldehyde or ketone comprising from 1 to 12 carbon atoms in a protic acid-catalyzed reaction to obtain at least one full acetal, drying the at least one full acetal to obtain at least one dried full acetal, and polymerizing a reaction mixture comprising isobutene or an isobutene-comprising monomer mixture, a Lewis acid or a complex comprising the Lewis acid as a polymerization catalyst, and the at least one dried full acetal to obtain the isobutene homopolymer or copolymer, wherein the isobutene homopolymer or copolymer has a number average molecular weight of from 500 to 5 000 000.
地址 Ludwigshafen DE