公开(公告)号：US4121031A

公开(公告)日：1978-10-17

申请号：US699313

申请日：1976-06-24

申请人： Saburo Minekawa ,  Sigeru Yonekawa ,  Haruro Tabata ,  Takashi Ishida ,  Satoshi Tsuchida ,  Kiyoshi Yamada

发明人： Saburo Minekawa ,  Sigeru Yonekawa ,  Haruro Tabata ,  Takashi Ishida ,  Satoshi Tsuchida ,  Kiyoshi Yamada

IPC分类号： C08F236/10 ,  C08F4/48

CPC分类号： C08F236/10

摘要： Process for producing a completely random copolymer of a conjugated diene and a monovinyl substituted aromatic compound having the same composition as that of the starting monomeric mixture which comprises copolymerizing a conjugated diene and a monovinyl substituted aromatic compound in the presence of lithium catalyst in a polymerization medium at a temperature not higher than 150.degree. C and at which the resulting copolymer is substantially phase-separated, said temperature being dependent upon the type of medium, and type, composition and concentration of the monomer used.

摘要翻译： 制备具有与起始单体混合物相同组成的共轭二烯和单乙烯基取代的芳族化合物的完全无规共聚物的方法，其包括在锂催化剂存在下在共聚合介质中共轭共轭二烯和单乙烯基取代的芳族化合物 在不高于150℃的温度下，所得共聚物基本上相分离，所述温度取决于介质的类型，所用单体的类型，组成和浓度。

公开(公告)号：US3980624A

公开(公告)日：1976-09-14

申请号：US451281

申请日：1974-03-14

申请人： Saburo Minekawa ,  Sigeru Yonekawa ,  Haruro Tabata ,  Takashi Ishida ,  Satoshi Tsuchida ,  Kiyoshi Yamada

发明人： Saburo Minekawa ,  Sigeru Yonekawa ,  Haruro Tabata ,  Takashi Ishida ,  Satoshi Tsuchida ,  Kiyoshi Yamada

IPC分类号： C08F36/04 ,  C08F236/10 ,  C08F136/06

CPC分类号： C08F36/04

摘要： A polymerization process for producing rubbery polymers or random copolymers having excellent physical properties as well as good processability, and completely freed from a flow at normal temperature. The process, which may be called as "Low-temperature Pretreatment Polymerization process," comprises polymerizing conjugated dienes or copolymerizing conjugated dienes and monovinyl substituted aromatic compound under a specific polymerization conditions in the presence of an alkyllithium catalyst to produce a polymer or random copolymer of the desirably controlled structure of branches to afford such excellent properties mentioned above.

摘要翻译： 用于生产具有优异物理性能和良好加工性的橡胶状聚合物或无规共聚物的聚合方法，并且在常温下完全脱离流动。 可以称之为“低温预处理聚合方法”的方法包括在烷基锂催化剂存在下，在特定的聚合条件下使共轭二烯或共轭二烯和单乙烯基取代的芳族化合物共聚，生成聚合物或无规共聚物 分枝的期望控制结构以提供上述优异的性能。

公开(公告)号：US4600749A

公开(公告)日：1986-07-15

申请号：US348335

申请日：1982-02-12

申请人： Saburo Minekawa ,  Koretaka Yamaguchi ,  Kazuo Toyomoto ,  Einosuke Fujimoto ,  Norikatu Nakayama ,  Shikazo Senoh

发明人： Saburo Minekawa ,  Koretaka Yamaguchi ,  Kazuo Toyomoto ,  Einosuke Fujimoto ,  Norikatu Nakayama ,  Shikazo Senoh

IPC分类号： C08F2/00 ,  C08F297/04 ,  C08L53/02

CPC分类号： C08L53/02 ,  C08F297/044

摘要： Thermoplastic elastomers of conjugated diolefins having 4 to 6 carbon atoms and monovinyl aromatic hydrocarbons are prepared by polymerizing 8 to 65 parts by weight of a monomer mixture A.sub.1 comprising a conjugated diolefin having 4 to 6 carbon atoms and a monovinyl aromatic hydrocarbon in a weight ratio of 85-10:15-90 in a hydrocarbon solvent and an inert atmosphere in the presence of 0.2 to 20 mmol., per 100 g. of the total amount of the mixture A.sub.1 and the mixture A.sub.2 described below, of a monolithium hydrocarbon calculated as active lithium to form an active copolymer, and after substantial completion of the polymerization, copolymerizing said active copolymer with 92 to 35 parts by weight of a monomer mixture A.sub.2 comprising the same conjugated diolefin having 4 to 6 carbon atoms and monovinyl aromatic hydrocarbon as said mixture A.sub.1 in a weight ratio of 95-20:5-80, such that the total amount of said mixtures A.sub.1 and A.sub.2 is 100 parts by weight, to thereby obtain a final copolymer having a monovinyl aromatic content of 10 to 70% by weight based on the total amount of said mixtures A.sub.1 and A.sub.2. The thus obtained thermoplastic elastomers have at least four polymeric blocks, and are comparable in elastic property to conventional thermoplastic elastomers and excellent in thermal resistance, resistance to oils and processability. Further, said thermoplastic elastomer does not require vulcanization or chemical cross-linking, and can be molded into an article having an excellent shape maintenance property.

摘要翻译： 通过将8至65重量份的包含具有4-6个碳原子的共轭二烯烃和单乙烯基芳族烃的单体混合物A1与重量比为1的聚合，制备具有4至6个碳原子的共轭二烯烃和单乙烯基芳族烃的热塑性弹性体 85-10：15-90在烃溶剂和惰性气氛中，每100克存在0.2-20mmol。 的混合物A1和下述混合物A2的总量的单轴烃作为活性锂计算以形成活性共聚物，并且在基本上完成聚合之后，将所述活性共聚物与92〜35重量份的 单体混合物A2，其包含具有4至6个碳原子的相同的共轭二烯烃和作为所述混合物A1的单乙烯基芳烃，重量比为95-20：5-80，使得所述混合物A1和A2的总量为100份 重量，从而获得基于所述混合物A1和A2的总量，单乙烯基芳族化合物含量为10至70重量％的最终共聚物。 由此获得的热塑性弹性体具有至少四个聚合物嵌段，并且在弹性方面与常规热塑性弹性体相当，并且耐热性，耐油性和加工性优异。 此外，所述热塑性弹性体不需要硫化或化学交联，并且可以模塑成具有优异形状维持性的制品。