Block copolymers of monovinylarenes and conjugated dienes containing two
interior tapered blocks
    1.
    发明授权
    Block copolymers of monovinylarenes and conjugated dienes containing two interior tapered blocks 失效
    含有两个内锥形嵌段的单乙烯基芳烃和共轭二烯的嵌段共聚物

    公开(公告)号:US5399628A

    公开(公告)日:1995-03-21

    申请号:US162735

    申请日:1993-12-02

    IPC分类号: C08F297/02 C08F297/04

    CPC分类号: C08F297/044

    摘要: A method for preparing tapered block copolymers in a polymerization process by sequentially charging: (1) an initiator and monovinylaromatic monomer in the presence of a randomizer; (2) an initiator and monovinylaromatic monomer; (3) a mixture of monovinylaromatic and conjugated diene monomers; (4) a mixture of monovinylaromatic and conjugated diene monomers; (5) conjugated diene monomer; and (6) a coupling agent; and the polymodal tapered block copolymers prepared thereby. The copolymers are particularly useful neat or in blends for applications such as packaging and food or drink containers which require transparency and good environmental stress crack resistance.

    摘要翻译: 在聚合过程中通过顺序加入来制备渐缩嵌段共聚物的方法:(1)引发剂和单乙烯基芳族单体在无规发生剂存在下进行; (2)引发剂和单乙烯基芳族单体; (3)单乙烯基芳族化合物和共轭二烯单体的混合物; (4)单乙烯基芳族化合物和共轭二烯单体的混合物; (5)共轭二烯单体; 和(6)偶联剂; 和由此制备的多模式锥形嵌段共聚物。 共聚物特别适用于需要透明度和良好的耐环境应力开裂性的包装和食品或饮料容器等应用的混合物。

    Sequential coupling in formation of resinous block copolymers
    2.
    发明授权
    Sequential coupling in formation of resinous block copolymers 失效
    树脂嵌段共聚物形成中的顺序偶联

    公开(公告)号:US5270396A

    公开(公告)日:1993-12-14

    申请号:US885715

    申请日:1992-05-18

    IPC分类号: C08F297/04 C08G81/02

    CPC分类号: C08G81/022 C08F297/044

    摘要: A method for preparing resinous copolymers by sequential charge copolymerization of at least two charges, at least one being a conjugated diene and at least one being a monovinylarene; followed by a charge of a polyfunctional coupling agent; and the final charge being an essentially difunctional coupling agent. The copolymer made by this method and articles made from this copolymer are also provided.

    摘要翻译: 一种通过至少两种电荷的顺序电荷共聚制备树脂共聚物的方法,至少一种是共轭二烯和至少一种是单乙烯基芳烃; 然后加入多官能偶联剂; 并且最终的电荷是基本上双官能的偶联剂。 还提供了由该方法制得的共聚物和由该共聚物制成的制品。

    Tapered block styrene/butadiene copolymers
    3.
    发明授权
    Tapered block styrene/butadiene copolymers 失效
    丁基苯乙烯/丁二烯共聚物

    公开(公告)号:US5227419A

    公开(公告)日:1993-07-13

    申请号:US632239

    申请日:1990-12-20

    IPC分类号: C08F297/04

    CPC分类号: C08F297/04

    摘要: A method for preparing tapered block copolymers in a polymerization process by charging an initiator and monomers sequentially with one or more charges of first one of the monomers, then with a mixture of the two monomers, and then with one or more charges of the first monomer to produce a polymodal tapered block copolymer. Suitable monomers include conjugated dienes and monovinylaromatic compounds. The copolymers are particularly useful for applications requiring environmental stress crack resistance.

    Tapered block copolymers of monivinylarenes and conjugated dienes
    4.
    发明授权
    Tapered block copolymers of monivinylarenes and conjugated dienes 失效
    单乙烯基芳烃和共轭二烯的嵌段嵌段共聚物

    公开(公告)号:US5910546A

    公开(公告)日:1999-06-08

    申请号:US963964

    申请日:1997-11-04

    摘要: A method for preparing tapered block copolymers which are particularly useful for blend components in blends with polymers of styrene. In the first embodiment of this invention the copolymers are prepared in a polymerization process by sequentially charging: (1) an initiator and monovinylaromatic monomers in the presence of a randomizer; (2) an initiator and monovinylaromatic monomers; (3) a mixture of monovinylaromatic and conjugated diene monomers; and (4) a coupling agent; to produce a polymodal tapered block copolymer. In a second embodiment of the invention tapered block copolymers are prepared in a polymerization process by sequentially charging: (1) an initiator and monovinylaromatic monomers in the presence of a randomizer; (2) an initiator and monovinylaromatic monomers; (3) a mixture of monovinylaromatic and conjugated diene monomers; (4) a mixture of monovinylaromatic and conjugated diene monomers; and (5) a coupling agent; to produce a polymodal tapered block copolymer. The invention copolymers and blends of the invention copolymers with polymers of styrene are particularly useful for applications such as packaging and food or drink containers which require transparency, low blueness, colorlessness, good impact strength and ductility.

    摘要翻译: 一种制备锥形嵌段共聚物的方法,其特别适用于与苯乙烯聚合物的共混物中的共混物组分。 在本发明的第一个实施方案中,共聚物在聚合过程中通过顺序加入来制备:(1)引发剂和单乙烯基芳族单体; (2)引发剂和单乙烯基芳族单体; (3)单乙烯基芳族化合物和共轭二烯单体的混合物; 和(4)偶联剂; 以制备多晶型锥形嵌段共聚物。 在本发明的第二个实施方案中,在聚合过程中通过顺序加入来制备渐缩嵌段共聚物:(1)引发剂和单乙烯基芳族单体; (2)引发剂和单乙烯基芳族单体; (3)单乙烯基芳族化合物和共轭二烯单体的混合物; (4)单乙烯基芳族化合物和共轭二烯单体的混合物; 和(5)偶联剂; 以制备多晶型锥形嵌段共聚物。 本发明的共聚物和本发明共聚物与苯乙烯聚合物的共混物特别适用于需要透明度,低蓝,无色度,良好的冲击强度和延展性的包装和食品或饮料容器等应用。

    Viscosity index improver soluble in synthetic poly(.alpha.-olefin)
lubricants
    5.
    发明授权
    Viscosity index improver soluble in synthetic poly(.alpha.-olefin) lubricants 失效
    粘度指数改进剂可溶于合成聚(α-烯烃)润滑剂

    公开(公告)号:US4418234A

    公开(公告)日:1983-11-29

    申请号:US331413

    申请日:1981-12-16

    摘要: Hydrogenated completely random conjugated diene/monovinylarene copolymers with a conjugated diene content above about 50 weight percent, monovinylarene content below about 50 weight percent, vinyl unsaturation (normalized) at least about 25 weight percent, block polymonovinylarene below about 5 weight percent, and molecular weight M.sub.n in the range of about 30,000-200,000, are soluble in synthetic poly(.alpha.-olefin) lubricating oils providing therein effective viscosity index control, pour point, and shear loss at low concentrations.

    摘要翻译: 氢化完全无规共轭二烯/单乙烯基芳烃共聚物,共轭二烯含量高于约50重量%,单乙烯基芳烃含量低于约50重量%,乙烯基不饱和度(归一化)至少约25重量%,嵌段聚单乙烯基芳烃低于约5重量%,分子量 在约30,000-200,000范围内的Mn可溶于合成聚(α-烯烃)润滑油,其中提供了低浓度下有效的粘度指数控制,倾点和剪切损失。

    Tapered block copolymers of monovinylarenes and conjugated dienes

    公开(公告)号:US06265485B1

    公开(公告)日:2001-07-24

    申请号:US08968001

    申请日:1997-11-12

    IPC分类号: C08F29704

    摘要: A method for preparing tapered block copolymers which are particularly useful for blend components in blends with polymers of styrene. In the first embodiment of this invention the copolymers are prepared in a polymerization process by sequentially charging: (1) an initiator and monovinylaromatic monomers in the presence of a randomizer; (2) an initiator and monovinylaromatic monomers; (3) a mixture of monovinylaromatic and conjugated diene monomers; and (4) a coupling agent; to produce a polymodal tapered block copolymer. In a second embodiment of the invention tapered block copolymers are prepared in a polymerization process by sequentially charging: (1) an initiator and monovinylaromatic monomers in the presence of a randomizer; (2) an initiator and monovinylaromatic monomers; (3) a mixture of monovinylaromatic and conjugated diene monomers; (4) a mixture of monovinylaromatic and conjugated diene monomers; and (5) a coupling agent; to produce a polymodal tapered block copolymer. The invention copolymers and blends of the invention copolymers with polymers of styrene are particularly useful for applications such as packaging and food or drink containers which require transparency, low blueness, colorlessness, good impact strength and ductility.