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    • 5. 发明授权
    • Terminally functionalized polymers produced using protected functional
initiators
    • 使用保护的官能引发剂制备终端官能化聚合物
    • US5612435A
    • 1997-03-18
    • US539467
    • 1995-10-05
    • Robert C. BeningCarl L. Willis
    • Robert C. BeningCarl L. Willis
    • C07F7/18C08F4/46C08F4/48C08F36/06C08F136/06C08F8/04
    • C08F4/48C07F7/1864C08F36/06
    • 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).
    • 通过从结构-CH 2 -CH 2 -CH 2 - (1,3-丙基),-CH 2 -CH(CH 3)2中选择A'来改善不饱和单体与具有结构R1R2R3Si-O-A'-Li的官能化引发剂的阴离子聚合 )-CH 2 - (2-甲基-1,3-丙基),-CH 2 -C(CH 3)2 -CH 2 - (2,2-二甲基-1,3-丙基)或-CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 - (1,8-辛基)。 这种窄类聚合引发剂在令人惊奇的更高的聚合温度下操作,其中A'是-CH 2 -CH 2 -CH 2 - (1-丁基),-CH 2 -CH 2 -CH 2 - CH 2 -CH 2 - (1,5-戊基)或-CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 - (1,6-己基)。
    • 10. 发明授权
    • Process for coupling styrenic block copolymers
    • 偶联苯乙烯嵌段共聚物的方法
    • US06730745B2
    • 2004-05-04
    • US10257881
    • 2003-02-03
    • Robert C. BeningCarl L. Willis
    • Robert C. BeningCarl L. Willis
    • C08F29704
    • C08L53/02C08F297/023C08F297/044C08G81/022C08L2666/24C09J153/02
    • Disclosed is a process for coupling styrenic block copolymers comprising admixing vinyl cyclohexene dioxide with a living block copolymer comprising at least one block of polymerized vinyl aromatic hydrocarbon monomers and at least one block of polymerized conjugated diene monomers, at a molar ratio of from 0.40 to 0.60 and carrying out a coupling reaction at a temperature of at least 65° C. to produce a coupled styrenic block copolymer. Also disclosed is a polymer composition comprising at most 30% by weight of a styrenic block copolymer comprising at least one block A of polymerized vinyl aromatic monomer(s) and at least one block B of polymerized conjugated diene(s) and at least 70% by weight of the styrenic block copolymer coupled with vinyl cyclohexene dioxide.
    • 公开了一种偶联苯乙烯嵌段共聚物的方法,其包括将乙烯基环己烯二氧化物与包含至少一个聚合的乙烯基芳族烃单体和至少一个聚合的共轭二烯单体的嵌段的活性嵌段共聚物以摩尔比为0.40-0.60 并在至少65℃的温度下进行偶联反应以产生偶联的苯乙烯嵌段共聚物。 还公开了一种聚合物组合物,其包含至多30重量%的苯乙烯嵌段共聚物,其包含至少一个聚合的乙烯基芳族单体的嵌段A和至少一个聚合的共轭二烯的嵌段B和至少70重量% 的苯乙烯嵌段共聚物与乙烯基环己烯二氧化物偶联。