发明授权
- 专利标题: Carbocationic catalysts and process for using said catalysts
- 专利标题(中): 羧酸催化剂和使用所述催化剂的方法
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申请号: US44529申请日: 1993-04-08
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公开(公告)号: US5350819A公开(公告)日: 1994-09-27
- 发明人: Timothy D. Shaffer
- 申请人: Timothy D. Shaffer
- 申请人地址: NJ Linden
- 专利权人: Exxon Chemical Patents Inc.
- 当前专利权人: Exxon Chemical Patents Inc.
- 当前专利权人地址: NJ Linden
- 主分类号: C08F4/52
- IPC分类号: C08F4/52 ; C08F2/06 ; C08F4/00 ; C08F4/14 ; C08F4/44 ; C08F8/00 ; C08F10/00 ; C08F10/10 ; C08F110/10
摘要:
A living carbocationic catalyst composition comprising an initiator of a tertiary alkyl halide, a tertiary aralkyl halide or polymeric halide a co-initiator of an alkyl aluminum or alkyl boron, a proton scavenger and a solvent medium with a dielectric constant between 2.5 and 3.25 is used to produce narrow molecular weight distribution polymers particularly isobutylene polymers.
公开/授权文献
- US6148386A Address generator circuity for a circular buffer 公开/授权日:2000-11-14
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