发明授权
US5391663A Protected functional initiators for making terminally functionalized
polymers
失效
用于制备末端官能化聚合物的受保护的官能引发剂
- 专利标题: Protected functional initiators for making terminally functionalized polymers
- 专利标题(中): 用于制备末端官能化聚合物的受保护的官能引发剂
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申请号: US155665申请日: 1993-11-22
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公开(公告)号: US5391663A公开(公告)日: 1995-02-21
- 发明人: Robert C. Bening , Carl L. Willis
- 申请人: Robert C. Bening , Carl L. Willis
- 申请人地址: TX Houston
- 专利权人: Shell Oil Company
- 当前专利权人: Shell Oil Company
- 当前专利权人地址: TX Houston
- 主分类号: C07F7/18
- IPC分类号: C07F7/18 ; C08F4/46 ; C08F4/48 ; C08F36/06
摘要:
The anionic polymerization of unsaturated monomers with functionalized initiators having the structure R.sup.1 R.sup.2 R.sup.3 Si--O--A'--Li is improved by selecting A' from the structures --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,3-propyl), --CH.sub.2 --CH(CH.sub.3)--CH.sub.2 --(2-methyl-1,3-propyl), --CH.sub.2 --C(CH.sub.3).sub.2 --CH.sub.2 --(2,2-dimethyl-1,3-propyl), or --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,8-octyl). This narrow class of polymerization initiators operate at surprisingly higher polymerization temperatures with surprisingly lower amounts of dead initiator than similar initiators wherein A' is --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,4-butyl), --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --(1,5-pentyl), or --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 13 CH.sub.2 --(1,6-hexyl).
公开/授权文献
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