Block copolymers of monovinylarenes and conjugated dienes and preparation thereof
    1.
    发明公开
    Block copolymers of monovinylarenes and conjugated dienes and preparation thereof 失效
    其制备乙烯基芳烃和共轭二烯和方法的嵌段共聚物。

    公开(公告)号:EP0646607A2

    公开(公告)日:1995-04-05

    申请号:EP94115370.2

    申请日:1994-09-29

    CPC classification number: C08F297/044

    Abstract: A method for preparing resinous polymodal monovinylarene-conjugated diene block copolymers and polymers produced thereby are provided. The method comprises sequentially contacting under polymerization conditions:

    (a) a monovinylarene monomer and initiator;
    (b) initiator and a monovinylarene monomer;
    (c) a sequence of at least two charges selected from the group consisting of (i) initiator and a
    monovinylarene monomer, (ii) a mixture of monovinylarene monomer and conjugated diene monomer, (iii) a conjugated diene monomer, (iv) a monovinylarene monomer;
    (d) a coupling agent;
       wherein the sequence of at least two charges in step (c) can be made in any order. In a preferred embodiment, at least three initiator charges are provided. In another preferred embodiment, at least three monovinylarene charges precede the first charge containing conjugated diene. In another preferred embodiment, at least four monovinylarene charges precede the first charge containing conjugated diene.

    Abstract translation: 一种用于制备树脂多峰单乙烯基芳烃 - 共轭嵌段共聚物的方法和服务提供由此产生的聚合物。 该方法包括顺序聚合的条件下接触:(a)一种乙烯基芳烃单体和引发剂; (B)引发剂和单乙烯基芳烃单体; (C)选自(ⅰ)的引发剂中选择的至少两种收费的序列,并且一个单乙烯基芳烃单体,(ⅱ)单乙烯基芳烃单体和共轭二烯单体的混合物,(ⅲ)共轭二烯单体,(ⅳ)一 单乙烯基芳烃单体; (D)偶联剂; worin至少两个电荷的在步骤(c)的顺序可以以任何顺序进行。 在优选实施例中,提供至少三个引发剂电荷。 另一个优选实施例服务,至少三个单乙烯基芳烃的电荷先于第一批次含有共轭。 另一个优选实施例服务,至少四个单乙烯基芳烃的电荷先于第一批次含有共轭。

    Block copolymers of monovinylaromatic and conjugated diene monomers
    2.
    发明公开
    Block copolymers of monovinylaromatic and conjugated diene monomers 失效
    单克隆抗体单克隆抗体单克隆抗体。

    公开(公告)号:EP0673953A1

    公开(公告)日:1995-09-27

    申请号:EP95104209.2

    申请日:1995-03-22

    CPC classification number: C08F297/044

    Abstract: A method for preparing block copolymers from which can be made transparent blue articles comprising sequentially charging under polymerization conditions at least one monovinylaromatic monomer and at least one conjugated diene monomer, wherein at least the first monomer charge is a monovinylaromatic monomer charge polymerized in the presence of an initiator; wherein at least one other charge polymerized in the presence of an initiator is a monomer selected from the group of conjugated diene monomers and mixtures of monovinylaromatic and conjugated diene monomers; wherein the final monomer charge is a conjugated diene charge; and thereafter charging the reaction mixture with at least one coupling agent. The invention copolymers are particularly useful for applications such as packaging, display devices, toys and decorative items in which transparent blue appearance is desired without significant compromise of other physical and mechanical properties.

    Abstract translation: 制备聚合物包括:在聚合条件下和随机存在下依次接触; (a)单乙烯基芳族单体和引发剂; (b)引发剂和单乙烯基芳族单体; (c)共轭二烯;(d)引发剂和混合物。 的单乙烯基芳族单体和共轭二烯单体; (e)共轭二烯; 和(f)偶联剂; 并且其中不超过三个引发剂电荷存在。 还要求保护的是:如上制备的共聚物。 由上述聚合物制成的制品。

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