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27 条记录 (耗时 0.024 秒)

    ABC block copolymers based on butadiene, isoprene and styrene, process for their production and their use
    6.
    发明授权
    ABC block copolymers based on butadiene, isoprene and styrene, process for their production and their use 失效
    基于二苯乙烯，异丙苯和苯乙烯的ABC嵌段共聚物，其生产方法及其使用

    公开(公告)号：US5096973A

    公开(公告)日：1992-03-17

    申请号：US593275

    申请日：1990-10-01

    申请人： Christoph Herrmann ,  Walter Hellermann ,  Hans-Bernd Fuchs ,  Karl-Heinz Nordsiek ,  Juergen Wolpers

    发明人： Christoph Herrmann ,  Walter Hellermann ,  Hans-Bernd Fuchs ,  Karl-Heinz Nordsiek ,  Juergen Wolpers

    IPC分类号： B60C11/00 ,  B60C1/00 ,  C08F2/06 ,  C08F4/32 ,  C08F4/48 ,  C08F297/04

    CPC分类号： C08F297/046 ,  B60C1/0016 ,  Y10S525/931

    摘要： An unsaturated, elastomeric ABC block copolymer comprised of the monomer units of 40 to 80% of 1,3-butadiene, 5 to 40% of isoprene and 2 to 30% of styrene, said copolymer comprising i) 40 to 75% of block A which contains styrene and butadiene units or isoprene and butadiene units with a content of distributed vinyl or isopropenyl groups of less than 15%, iia) up to 25% of a block B which contains styrene and butadiene units or isoprene and butadiene units with a vinyl or isopropenyl content of more than 70%, or iib) up to 25% of a block B' which contains styrene, isoprene and optionally butadiene units with a content of homogeneously distributed isopropenyl or vinyl groups of less than 15%, and iii) 20 to 55% of a block C which contains styrene and isoprene units and optionally butadiene units with an isopropenyl or vinyl content of more than 70%.

    摘要翻译： 由单体单元含有40-80％的1,3-丁二烯，5-40％的异戊二烯和2-30％的苯乙烯组成的不饱和的弹性体ABC嵌段共聚物，所述共聚物包括i）40-75％的嵌段A 其含有苯乙烯和丁二烯单元或具有小于15％的分布式乙烯基或异丙烯基含量的异戊二烯和丁二烯单元，i）至多25％的含有苯乙烯和丁二烯单元的嵌段B或具有乙烯基的丁二烯单元 或异丙烯基含量大于70％，或iib）至多25％的嵌段B'，其含有均匀分布的异丙烯基或乙烯基的含量小于15％的苯乙烯，异戊二烯和任选的丁二烯单元，以及iii）20 至55％的含有苯乙烯和异戊二烯单元的嵌段C和任选地具有大于70％的异丙烯基或乙烯基含量的丁二烯单元。

    AB block copolymers based on butadiene, isoprene and styrene
    7.
    发明授权
    AB block copolymers based on butadiene, isoprene and styrene 失效
    AB嵌段共聚物基于二苯乙烯，异丙苯和苯乙烯

    公开(公告)号：US5053459A

    公开(公告)日：1991-10-01

    申请号：US359393

    申请日：1989-05-31

    申请人： Christoph Herrmann ,  Walter Hellermann ,  Hans-Bernd Fuchs ,  Karl-Heinz Nordsiek ,  Juergen Wolpers

    发明人： Christoph Herrmann ,  Walter Hellermann ,  Hans-Bernd Fuchs ,  Karl-Heinz Nordsiek ,  Juergen Wolpers

    IPC分类号： B60C1/00 ,  C08F4/42 ,  C08F4/48 ,  C08F297/04

    CPC分类号： B60C1/0016 ,  C08F297/046 ,  Y10S152/905

    摘要： An unsaturated elastomeric AB block copolymer comprising 20-75 wt. % 1,3-butadiene monomer units; 5-50 wt. % isoprene monomer units; and 3-30% wt. % styrene monomer units; wherein said block copolymer contains less than 3 wt. % styrene blocks, each of said block A and block B contain all three of said monomer units, said copolymer comprises 30-90 wt. % of block A and 70-10 wt. % of block B, and wherein the average vinyl and isopropenyl content of block B are each at least 30% higher than those of block A; and a method for preparing the unsaturated AB block copolymer.

    摘要翻译： 不饱和弹性体AB嵌段共聚物，其包含20-75wt。 ％1,3-丁二烯单体单元; 5-50重量％ ％异戊二烯单体单元; 和3-30重量％ ％苯乙烯单体单元; 其中所述嵌段共聚物含有小于3wt。 ％苯乙烯嵌段，所述嵌段A和嵌段B各自含有所有三个所述单体单元，所述共聚物包含30-90wt。 块A的百分比和70-10重量％ 嵌段B的％，并且其中嵌段B的平均乙烯基和异丙烯基含量各自比嵌段A的平均值高至少30％; 以及制备不饱和AB嵌段共聚物的方法。

    Preparation of polyisoprene having high content of 1,2- and 3,4-structural units by anionic polymerization
    9.
    发明授权
    Preparation of polyisoprene having high content of 1,2- and 3,4-structural units by anionic polymerization 失效
    通过阴离子聚合制备具有高含量1,2-和3,4-结构单元的聚异戊二烯

    公开(公告)号：US4894425A

    公开(公告)日：1990-01-16

    申请号：US55543

    申请日：1987-05-29

    申请人： Walter Hellermann ,  Karl-Heinz Nordsiek ,  Jurgen Wolpers

    发明人： Walter Hellermann ,  Karl-Heinz Nordsiek ,  Jurgen Wolpers

    IPC分类号： C08F4/48 ,  C08F136/08

    CPC分类号： C08F136/08 ,  Y10S525/914

    摘要： Polyisoprenes having a high content of 1,2- and 3,4-structural units, a process for their preparation, and their use.The previous processes for the preparation of polyisoprene having a high content of 1,2- and 3,4-structural units were still unsatisfactory in terms of the cocatalyst employed.The use of ethylene glycol dialkyl ethers of the formulaR.sub.1 --O--CH.sub.2 --CH.sub.2 --O--R.sub.2in which R.sub.1 and R.sub.2 are alkyl groups having different numbers of C atoms, from the group consisting of methyl, ethyl, n- and isopropyl and n-, iso-, sec.- and tert.-butyl, has, in particular, the advantage that the "living polymers" formed during the anionic polymerization are not damaged.The production of tires and damping elements using these polyisoprenes.

    摘要翻译： 具有高含量的1,2-和3,4-结构单元的聚异戊二烯，其制备方法及其用途。 用于制备具有高含量的1,2-和3,4-结构单元的聚异戊二烯的先前方法在所用助催化剂方面仍不能令人满意。 使用式R1-O-CH2-CH2-O-R2的乙二醇二烷基醚，其中R1和R2是具有不同数目的C原子的烷基，由甲基，乙基，正和异丙基组成的组，以及 正，异，仲和叔丁基特别具有在阴离子聚合期间形成的“活性聚合物”不被损坏的优点。 使用这些聚异戊二烯生产轮胎和阻尼元件。