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    • 1. 发明授权
    • Polymerisation of olefinic-containing monomers employing anionic
initiators
    • 使用阴离子引发剂的含烯烃单体的聚合
    • US5362699A
    • 1994-11-08
    • US142966
    • 1993-10-29
    • Neil ShepherdMalcolm J. Stewart
    • Neil ShepherdMalcolm J. Stewart
    • C07F7/18C08F4/42C08F4/46C08F4/72C08F8/00C08F36/04B01J31/00
    • C07F7/1852C07F7/1864C08F36/04
    • Process for anionically polymerizing a conjugated 1,3-diene monomer consists of contacting the monomer in an inert hydrocarbon solvent with a monofunctional silyl ether initiator of general formula R.sup.1 R.sup.2 R.sup.3 Si--O--A--Li where R.sup.1 to R.sup.3 are independently selected from monovalent organic substituent groups and A is a short chain hydrocarbon bridging group, to yield a polydiene having a molecular weight of typically 1,000-10,000, a high 1.4 content of typically 90% and a low polydispensity of typically 1.15. The reactive ends of the living polymer chains may be terminated with a reactive group such as hydroxyl by treating the polymer with ethylene oxide. Subsequent removal of the polymer's relatively unreactive silyl end groups by reaction with tetra-n-butylammonium fluoride produces a difunctional, chain-extendable, hydroxy-terminated polydiene useful as a rubbery binder prepolymer.
    • 共轭1,3-二烯单体的阴离子聚合方法包括使单体在惰性烃溶剂中与通式为R 1 R 2 R 3 Si-OA-Li的单官能甲硅烷基醚引发剂接触,其中R 1至R 3独立地选自一价有机取代基和A 是短链烃桥联基团,以产生分子量通常为1,000-10,000的聚二烯,通常为90%的高的1.4含量和典型的1.15的低聚密度。 通过用环氧乙烷处理聚合物,活性聚合物链的反应性末端可以用诸如羟基的反应性基团终止。 随后通过与四正丁基氟化铵反应去除聚合物相对未反应的甲硅烷基端基产生可用作橡胶状粘合剂预聚物的双官能的可扩链的羟基封端的聚二烯。
    • 2. 发明授权
    • Polymerization of olefinic-containing monomers employing anionic
initiators
    • 使用阴离子引发剂的含烯烃单体的聚合
    • US5331058A
    • 1994-07-19
    • US920368
    • 1992-08-17
    • Neil ShepherdMalcolm J. Stewart
    • Neil ShepherdMalcolm J. Stewart
    • C07F7/18C08F4/42C08F4/46C08F4/72C08F8/00C08F36/04C08F8/42C08F8/34C08F8/32
    • C07F7/1852C07F7/1864C08F36/04
    • Process for anionically polymerising a conjugated 1,3-diene monomer consists of contacting the monomer in an inert hydrocarbon solvent with a monofunctional silyl ether initiator of general formula R.sup.1 R.sup.2 R.sup.3 Si--O--A--Li where R.sup.1 to R.sup.3 are independently selected from monovalent organic substituent groups and A is a short chain hydrocarbon bridging group, to yield a polydiene having a molecular weight of typically 1,000-10,000, a high 1.4 content of typically 90% and a low polydispensity of typically 1.15. The reactive ends of the living polymer chains may be terminated with a reactive group such as hydroxyl by treating the polymer with ethylene oxide. Subsequent removal of the polymer's relatively unreactive silyl end groups by reaction with tetra-n-butylammonium fluoride produces a difunctional, chain-extendable, hydroxy-terminated polydiene useful as a rubbery binder prepolymer.
    • PCT No.PCT / GB91 / 00187 Sec。 371日期:1992年8月17日 102(e)日期1992年8月17日PCT 1991年2月6日PCT PCT。 出版物WO91 / 12277 1991年8月22日。阴离子聚合共轭1,3-二烯单体的方法包括将单体在惰性烃溶剂中与通式R 1 R 2 R 3 Si-OA-Li的单官能甲硅烷基醚引发剂接触,其中R1至R3独立地选自 来自一价有机取代基,A是短链烃桥基,得到分子量通常为1,000-10,000,高1.4含量通常为90%,低聚密度通常为1.15的聚二烯。 通过用环氧乙烷处理聚合物,活性聚合物链的反应性末端可以用诸如羟基的反应性基团终止。 随后通过与四正丁基氟化铵反应去除聚合物相对未反应的甲硅烷基端基产生可用作橡胶状粘合剂预聚物的双官能的可扩链的羟基封端的聚二烯。