发明授权
US4861742A Bifunctional alkali metal compounds, preparation and use thereof as
polymerization initiators
失效
双官能碱金属化合物,其制备和用途为聚合引发剂
- 专利标题: Bifunctional alkali metal compounds, preparation and use thereof as polymerization initiators
- 专利标题(中): 双官能碱金属化合物,其制备和用途为聚合引发剂
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申请号: US238851申请日: 1988-09-01
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公开(公告)号: US4861742A公开(公告)日: 1989-08-29
- 发明人: Klaus Bronstert , Siegbert Bohnet , Walter Himmele , Kaspar Bott
- 申请人: Klaus Bronstert , Siegbert Bohnet , Walter Himmele , Kaspar Bott
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3729144 19870901
- 主分类号: C07F1/00
- IPC分类号: C07F1/00 ; C07F1/02 ; C07F1/04 ; C08F4/42 ; C08F4/46 ; C08F4/48 ; C08F12/00 ; C08F12/08 ; C08F36/00 ; C08F36/06
摘要:
Bifunctional initiators for anionic polymerization are prepared by reacting an alkenylaromatic compound of the general formula I ##STR1## where Ar is aromatic hydrocarbyl which may be substituted by alkyl or another group inert toward organoalkali metal compounds and may contain nitrogen,R.sup.1 is linear or branched alkyl, cycloalkyl, alkenyl or aralkyl or from 1 to 22 carbon atoms where at least the carbon adjacent to the double bond is saturated and aliphatic,R.sup.2 is hydrogen or is likewise linear or branched alkyl, cycloalkyl, alkenyl or aralkyl or from 1 to 22 carbon atoms where at least the carbon adjacent to the double bond is saturated and aliphatic, and where R.sup.1 and R.sup.2 may be part of a common cycloaliphatic ring, in the presence of one or more ethers and of tertiary amines and in the presence or absence of a further inert aliphatic, alicyclic or aromatic solvent, at from -20.degree. to +70.degree. C. with preferably lithium and with dimerization, with the use in addition of poly-cyclic aromatic hydrocarbons which catalytically promote the dimerization in amount of from 0.001 to 50, preferably 20, mol % and with or without the removal of the ethers and/or tertiary amines after the preparation, and are used for polymerizing anionically polymerizable monomers such as styrene.