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 |