发明授权
US5612435A Terminally functionalized polymers produced using protected functional
initiators
失效
使用保护的官能引发剂制备终端官能化聚合物
- 专利标题: Terminally functionalized polymers produced using protected functional initiators
- 专利标题(中): 使用保护的官能引发剂制备终端官能化聚合物
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申请号: US539467申请日: 1995-10-05
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公开(公告)号: US5612435A公开(公告)日: 1997-03-18
- 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 ; C08F136/06 ; C08F8/04
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 --CH.sub.2 --(1,6-hexyl).
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