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    • 1. 发明授权
    • Process for preparation of block copolymers in mixed alkane/cycloalkane solvents
    • 在混合烷烃/环烷烃溶剂中制备嵌段共聚物的方法
    • US06242536B1
    • 2001-06-05
    • US08988925
    • 1997-12-11
    • James E. HallDaniel F. GravesHideo Takeichi
    • James E. HallDaniel F. GravesHideo Takeichi
    • C08F29300
    • C08F297/04
    • The dispersibility of the initial polystyrene block in forming a S-B-S type of copolymer is improved by first preparing a small block of homopolydiene such as homopolybutadiene as a dispersing agent. Onto this small block of homopolybutadiene, the first block of polystyrene is formed and affixed and thereby made dispersible in a mixture of alkanes and 15 to 60% by weight of cycloalkanes, preferably hexane and cyclohexane. After the preparation of the dispersing agent and the first styrene block, the remaining monomer charges to the reactor are fed in aliphatic hydrocarbon diluents, preferably hexane or technical hexane, thereby greatly reducing the final percentage of cycloalkanes including cyclohexane in the reactor to less than 25% of total dispersing medium. The block copolymers produced according to the present process display a narrow molecular weight distribution and improved tensile strength over block copolymers produced in the absence of the additional cycloalkanes in the solvent system.
    • 初始聚苯乙烯嵌段在形成S-B-S型共聚物中的分散性通过首先制备均聚二烯如小聚丁二烯作为分散剂的小块来改善。 在该小块均聚丁二烯上,形成第一块聚苯乙烯并固化,从而使其分散在烷烃和15至60重量%的环烷烃,优选己烷和环己烷的混合物中。 在分散剂和第一苯乙烯嵌段的制备之后,向脂肪烃稀释剂(优选己烷或工业己烷)中将进料到反应器中的剩余单体进料进料,从而大大降低反应器中包括环己烷在内的环烷烃的最终百分比至小于25 总分散介质的百分比。 根据本发明制备的嵌段共聚物在溶剂体系中不存在另外的环烷烃时产生的嵌段共聚物显示窄的分子量分布和改进的拉伸强度。
    • 2. 发明授权
    • Diene polymers and copolymers incorporating partial coupling and
terminals formed from hydrocarboxysilane compounds
    • 二烯聚合物和共聚物结合部分偶联和由烃基甲硅烷化合物形成的末端
    • US06008295A
    • 1999-12-28
    • US891570
    • 1997-07-11
    • Hideo TakeichiDaniel F. GravesSunil B. SarkarDavid F. Lawson
    • Hideo TakeichiDaniel F. GravesSunil B. SarkarDavid F. Lawson
    • B60C1/00C08C19/44C08F8/00C08F297/04C08K3/36C08L9/00C08L15/00C08L19/00C08F8/42
    • C08L7/00B60C1/0016C08C19/44C08L15/00C08L19/006C08L9/00C08L9/06
    • Diene polymers or copolymers having improved balance between raw polymer viscosity and mixed compound viscosity, useful in tire tread compositions having highly balanced wet traction, rolling resistance, and traction in ice and snow, and fracture properties in the cured and white carbon reinforced states are provided. These diene polymers or copolymers comprise a mixture of diene polymer or copolymer chains containing carbon-tin bonds in the main polymer or copolymer chains and diene polymer or copolymer chains containing terminals derived from hydrocarboxysilane compounds. The diene polymer or copolymers are prepared by first coupling a portion of the living diene polymer or copolymer chains obtained by anionic polymerization using a tin polyhalide coupling agent and then terminating the remaining living diene polymer or copolymer chains using hydrocarboxysilane compounds. The resultant diene polymers or copolymers have improved balance between raw polymer viscosity and mixed compound viscosity when compounded with silica and/or carbon black and cured compositions are useful in tire tread having highly balanced wet traction, rolling resistance, and traction in ice and snow. The polymers can be utilized to form elastomer compositions for tire treads having balanced properties of reduced rolling resistance and wet traction and handling or balanced properties of wet traction and handling and traction in snow and ice.
    • 本发明提供了在具有高均衡湿牵引力,滚动阻力和冰雪牵引力的轮胎胎面组合物中有用的原始聚合物粘度和混合化合物粘度之间的改进平衡的二烯聚合物或共聚物,以及固化和白色碳增强状态下的断裂性能 。 这些二烯聚合物或共聚物包含在主聚合物或共聚物链中含有碳 - 锡键的二烯聚合物或共聚物链的混合物,以及含有衍生自烃基甲硅烷化合物的末端的二烯聚合物或共聚物链。 二烯聚合物或共聚物通过首先将一部分活性二烯聚合物或通过阴离子聚合获得的共聚物链与多卤化物偶联剂偶联,然后使用烃基甲硅烷化合物终止剩余的活性二烯聚合物或共聚物链来制备。 所得到的二烯聚合物或共聚物在与二氧化硅和/或炭黑混合时与原料聚合物粘度和混合化合物粘度之间具有改善的平衡,并且固化的组合物可用于具有高度平衡的湿牵引力,滚动阻力和在冰雪中的牵引力的轮胎胎面。 聚合物可用于形成用于轮胎胎面的弹性体组合物,其具有降低的滚动阻力和湿牵引力和处理性能的平衡性能或湿牵引和处理以及雪和冰中牵引的平衡性能。
    • 3. 发明授权
    • Diene polymers and copolymers incorporating partial coupling and terminals formed from hydrocarboxysilane compounds
    • 二烯聚合物和共聚物结合部分偶联和由烃基甲硅烷化合物形成的末端
    • US06228908B1
    • 2001-05-08
    • US09229025
    • 1999-01-12
    • Hideo TakeichiDaniel F. GravesSunil B. SarkarDavid F. LawsonWilliam L. HergenrotherWilliam M. ColeJames Oziomek
    • Hideo TakeichiDaniel F. GravesSunil B. SarkarDavid F. LawsonWilliam L. HergenrotherWilliam M. ColeJames Oziomek
    • C08K515
    • C08L7/00B60C1/0016C08C19/44C08K3/36C08K5/151C08K5/1535C08L9/00C08L9/06C08L15/00C08L19/006Y02T10/862C08L21/00C08L2666/08
    • Diene polymers or copolymers having improved balance between raw polymer viscosity and mixed compound viscosity, useful in tire tread compositions having highly balanced wet traction, rolling resistance, and traction in ice and snow, and fracture properties in the cured and white carbon reinforced states are provided. These diene polymers or copolymers comprise a mixture of diene polymer or copolymer chains containing carbon-tin bonds in the main polymer or copolymer chains and diene polymer or copolymer chains containing terminals derived from hydrocarboxysilane compounds. The diene polymer or copolymers are prepared by first coupling a portion of the living diene polymer or copolymer chains obtained by anionic polymerization using a tin polyhalide coupling agent and then terminating the remaining living diene polymer or copolymer chains using hydrocarboxysilane compounds. The resultant diene polymers or copolymers have improved balance between raw polymer viscosity and mixed compound viscosity when compounded with silica and/or carbon black and cured compositions are useful in tire tread having highly balanced wet traction, rolling resistance, and traction in ice and snow. The polymers can be utilized to form elastomer compositions for tire treads having balanced properties of reduced rolling resistance and wet traction and handling or balanced properties of wet traction and handling and traction in snow and ice.
    • 本发明提供了在具有高均衡湿牵引力,滚动阻力和冰雪牵引力的轮胎胎面组合物中有用的原始聚合物粘度和混合化合物粘度之间的改进平衡的二烯聚合物或共聚物,以及固化和白色碳增强状态下的断裂性能 。 这些二烯聚合物或共聚物包含在主聚合物或共聚物链中含有碳 - 锡键的二烯聚合物或共聚物链的混合物,以及含有衍生自烃基甲硅烷化合物的末端的二烯聚合物或共聚物链。二烯聚合物或共聚物通过首先将 通过使用多卤化锡偶合剂的阴离子聚合得到的活性二烯聚合物或共聚物链的一部分,然后使用烃基甲硅烷化合物终止剩余的活性二烯聚合物或共聚物链。 所得到的二烯聚合物或共聚物在与二氧化硅和/或炭黑混合时与原料聚合物粘度和混合化合物粘度之间具有改善的平衡,并且固化的组合物可用于具有高均衡的湿牵引力,滚动阻力和在冰雪中的牵引力的轮胎胎面。 聚合物可用于形成用于轮胎胎面的弹性体组合物,其具有降低的滚动阻力和湿牵引力和处理性能的平衡性能或湿牵引和处理以及雪和冰中牵引的平衡性能。
    • 6. 发明授权
    • Thermoformable blends of multiblock polymer compositions with polystyrene
    • 多嵌段聚合物组合物与聚苯乙烯的可热成型共混物
    • US5089558A
    • 1992-02-18
    • US646485
    • 1991-01-28
    • James E. HallDaniel F. Graves
    • James E. HallDaniel F. Graves
    • C08L25/02C08L53/02
    • C08L25/02C08L53/02C08L2205/02
    • A polymer composition for use in making thermoformed products which comprises a blend of: (1) 20 to 75% by weight of a polyvinylaromatic resin, (2) 20 to 75% by weight of S.sub.1 -(B/S.sub.2).sub.n type block copolymer wherein S.sub.1 and S.sub.2 are vinylaromatic block polymers, B is a diene block polymer, (B/S.sub.2) represents a tapered or non-tapered block copolymer and the S.sub.1 block is 5 to 20% by weight of the block copolymer, (S.sub.1 +S.sub.2) is 65 to 95% by weight of the block copolymer, and the total block styrene content of the block copolymer ranges between 35 and 80% by weight, and (3) 0.5 to 10% by weight a diene-vinylaromatic block copolymer (B'-S') containing 10-60% by weight of the vinylaromatic polymer block.
    • 一种用于制造热成型产品的聚合物组合物,其包含以下混合物:(1)20至75重量%的聚乙烯基芳族树脂,(2)20至75重量%的S1-(B / S2)n型嵌段共聚物 其中S1和S2是乙烯基芳族嵌段聚合物,B是二烯嵌段聚合物,(B / S2)表示锥形或非渐变嵌段共聚物,S1嵌段是嵌段共聚物的5〜20重量%(S1 + S2 )为嵌段共聚物的65〜95重量%,嵌段共聚物的总嵌段苯乙烯含量为35〜80重量%,(3)0.5〜10重量%的二烯 - 乙烯基芳族嵌段共聚物(B '-S'),其含有10-60重量%的乙烯基芳族聚合物嵌段。