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    Process for the production of gel-free ethylene/vinyl acetate copolymers with a high content of copolymerized vinyl acetate and a high mooney viscosity
    4.
    发明授权
    Process for the production of gel-free ethylene/vinyl acetate copolymers with a high content of copolymerized vinyl acetate and a high mooney viscosity 失效
    用于生产具有高含量的共聚乙酸乙烯酯和高门尼粘度的无凝胶乙烯/乙酸乙烯酯共聚物的方法

    公开(公告)号：US5576401A

    公开(公告)日：1996-11-19

    申请号：US545375

    申请日：1995-10-19

    申请人： Roland Steiger ,  Erhard Asch ,  Wolfgang Baade ,  Werner Obrecht

    发明人： Roland Steiger ,  Erhard Asch ,  Wolfgang Baade ,  Werner Obrecht

    IPC分类号： C08F2/04 ,  C08F2/06 ,  C08F4/04 ,  C08F10/00 ,  C08F210/02 ,  C08F218/02 ,  C08F218/08 ,  C08J3/24

    CPC分类号： C08F218/08 ,  C08F210/02

    摘要： Gel-free ethylene/vinyl acetate copolymers with a high content of copolymerized vinyl acetate and a high Mooney viscosity are produced by carrying out the polymerization in solution in the presence of 20 to 45% by weight tert.butanol, based on the reaction solution, at temperatures of 50.degree. to 80.degree. C. and under pressures of 300 to 450 bar using azo compounds in a cascade of stirred reactors with an average residence time of the reaction solution in the reactor cascade of 5 to 9 hours and a conversion of 50 to 70% by weight, based on the vinyl acetate used. The ethylene/vinyl acetate copolymers produced by the process according to the invention may be used for the production of vulcanizates having improved mechanical properties.

    摘要翻译： 基于反应溶液，在20-45％（重量）叔丁醇的存在下，通过在溶液中进行聚合来制备具有高含量共聚乙酸乙烯酯和高门尼粘度的无凝胶乙烯/乙酸乙烯酯共聚物， 在50至80℃的温度和300至450巴的压力下，在反应器级联反应器的平均停留时间为5至9小时的搅拌反应器级联中使用偶氮化合物，转化率为50 至70重量％，基于所用的乙酸乙烯酯。 通过本发明方法生产的乙烯/乙酸乙烯酯共聚物可用于生产具有改善的机械性能的硫化橡胶。

    Hydrogenated copolymers of unsubstituted and substituted conjugated dienes
    6.
    发明授权
    Hydrogenated copolymers of unsubstituted and substituted conjugated dienes 有权
    未取代和取代的共轭二烯的氢化共聚物

    公开(公告)号：US07241841B2

    公开(公告)日：2007-07-10

    申请号：US11123819

    申请日：2005-05-06

    申请人： Cristina Stere ,  Werner Obrecht ,  Udo Sondermann ,  Gerd Sylvester

    发明人： Cristina Stere ,  Werner Obrecht ,  Udo Sondermann ,  Gerd Sylvester

    IPC分类号： C08C19/02 ,  C08F8/02

    CPC分类号： C08C19/02

    摘要： The random, hydrogenated copolymers according to the present invention of unsubstituted conjugated dienes and substituted conjugated dienes, having a glass transition temperature of ≦−60° C., an enthalpy of fusion of ≦100 J/g and a content of residual double bonds in the range from 0 to 80%, are suitable for the production of rubber moldings of all kinds which have good resistance to ageing and high resilience at low temperatures. In particular, various tire components and industrial rubber articles may be mentioned as rubber moldings. The copolymers are also suitable for the rubber modification of brittle thermoplastics.

    摘要翻译： 根据本发明的无规共聚物，其未结合的二烯和取代的共轭二烯的玻璃化转变温度<= - 60℃，熔化焓<= 100J / g和残余双重含量 粘合范围为0至80％，适用于生产具有良好耐老化性和低温弹性的各种橡胶模制品。 特别地，可以提及各种轮胎部件和工业橡胶制品作为橡胶模制品。 共聚物也适用于脆性热塑性塑料的橡胶改性。

    Hydrogenated copolymers of unsubstituted and substituted conjugated dienes
    7.
    发明申请
    Hydrogenated copolymers of unsubstituted and substituted conjugated dienes 有权
    未取代和取代的共轭二烯的氢化共聚物

    公开(公告)号：US20050261439A1

    公开(公告)日：2005-11-24

    申请号：US11123819

    申请日：2005-05-06

    申请人： Cristina Stere ,  Werner Obrecht ,  Udo Sondermann ,  Gerd Sylvester

    发明人： Cristina Stere ,  Werner Obrecht ,  Udo Sondermann ,  Gerd Sylvester

    IPC分类号： C08C19/02 ,  C08F293/00

    CPC分类号： C08C19/02

    摘要： The random, hydrogenated copolymers according to the present invention of unsubstituted conjugated dienes and substituted conjugated dienes, having a glass transition temperature of ≦−60° C., an enthalpy of fusion of ≦100 J/g and a content of residual double bonds in the range from 0 to 80%, are suitable for the production of rubber moldings of all kinds which have good resistance to ageing and high resilience at low temperatures. In particular, various tire components and industrial rubber articles may be mentioned as rubber moldings. The copolymers are also suitable for the rubber modification of brittle thermoplastics.

    摘要翻译： 根据本发明的无规共聚物，其未结合的二烯和取代的共轭二烯的玻璃化转变温度<= - 60℃，熔化焓<= 100J / g和残余双重含量 粘合范围为0至80％，适用于生产具有良好耐老化性和低温弹性的各种橡胶模制品。 特别地，可以提及各种轮胎部件和工业橡胶制品作为橡胶模制品。 共聚物也适用于脆性热塑性塑料的橡胶改性。