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    METHOD FOR PRODUCING ANIONIC POLYMER
    14.
    发明公开
    METHOD FOR PRODUCING ANIONIC POLYMER 审中-公开

    公开(公告)号：EP3190130A4

    公开(公告)日：2018-04-04

    申请号：EP15838378

    申请日：2015-09-03

    申请人： KURARAY CO

    发明人： HATANAKA YASUHIRO ,  TSUJI TOMOAKI ,  SUNAGA SYUICHI

    IPC分类号： C08F2/06 ,  C08F36/06 ,  C08F297/04

    CPC分类号： C08F297/04 ,  C08F2/06 ,  C08F36/06

    摘要： Provided is a method for producing an anionic polymer in an industrially advantageous manner, whereby at the time of anionically polymerizing monomers using a solvent whose boiling point at atmospheric pressure is higher than the polymerization temperature, temperature control can be achieved by quickly removing the heat of the polymerization reaction using a simple device. The method for producing an anionic polymer includes anionically polymerizing a conjugated diene, an aromatic vinyl compound, or a mixture thereof under a condition where the amount of an inert gas present with respect to 1 kg of a solvent whose boiling point at atmospheric pressure is higher than the polymerization temperature is 20 mmol or less.

    TRANSPARENT, TOUGH AND HEATPROOF RUBBER COMPOSITION COMPRISING NEODYMIUM-CATALYZED ISOPRENE COMPONENT, AND MANUFACTURING PROCESS FOR THE SAME
    18.
    发明公开
    TRANSPARENT, TOUGH AND HEATPROOF RUBBER COMPOSITION COMPRISING NEODYMIUM-CATALYZED ISOPRENE COMPONENT, AND MANUFACTURING PROCESS FOR THE SAME 有权
    含钕催化异戊二烯组分的透明，坚韧和耐热橡胶组合物及其制造方法

    公开(公告)号：EP3186287A2

    公开(公告)日：2017-07-05

    申请号：EP15834936.5

    申请日：2015-08-24

    申请人： Kraton Polymers U.S. LLC

    发明人： NAITO, Fumio ,  NAKAZAWA, Yoshikatsu ,  MASUKO, Norio ,  VAN DER WAAL, Arwin

    IPC分类号： C08C19/00 ,  C08F36/06 ,  C08F36/08

    摘要： FIELD: chemistry.SUBSTANCE: invention relates to the production of a rubber composition characterized by high transparency, toughness and heat resistance. Composition contains a neodymium catalyzed isoprene rubber (IR) component in an amount of from 5 to 95 mass parts and a rubber (RB) polymer component selected from the group: butadiene rubber (BR), 1,2-polybutadiene rubber, styrene-butadiene rubber (SBR), provided that the total amount of IR and RB polymers is 100 parts by weight. Composition is free from silicon dioxide and is characterized by turbidity, less than 20 % in relation to a sheet with a thickness of 2 mm, and a hardness of Durometer type A (0 sec), amounting to approximately 30 or more. Neodymium-catalyzed isoprene rubber has a cis isomer content of 95 % or more and includes approximately 10,000 ppm or less of iron or lithium.EFFECT: composition provides excellent transparency, durability and heat resistance.15 cl, 5 tbl, 9 ex

    摘要翻译： 为了提供具有高透明度，韧性和耐热性的橡胶组合物，本发明可以提供包含钕催化的异戊二烯橡胶（IR）组分的组合物; 和选自BR，1,2-聚丁二烯橡胶和SBR的橡胶聚合物（RB）组分，其中IR的量为约5-95质量份，条件是IR和RB的总量 是100质量份，其中所述组合物基本不含二氧化硅，其中所述组合物具有小于约20％的雾度，并且其中所述组合物具有约30或更大的A型杜罗硬度计硬度（0秒）。