Method for producing statistically coupled asymmetric radial polymers
    3.
    发明授权
    Method for producing statistically coupled asymmetric radial polymers 失效
    统计耦合的不对称径向聚合物的制备方法

    公开(公告)号:US5446093A

    公开(公告)日:1995-08-29

    申请号:US150929

    申请日:1993-11-10

    CPC分类号: C08G81/022

    摘要: A process is disclosed for producing six-armed and eight-armed asymmetric radial block copolymers. The process comprises anionically polymerizing a diene and/or a vinyl aromatic hydrocarbon to create living polydiene and/or vinyl aromatic hydrocarbon arms, sequentially anionically polymerizing a vinyl aromatic hydrocarbon and a diene to create living block copolymer arms and coupling the two sets of arms together in one step with a coupling agent that will couple six or eight arms, wherein the molar ratio of the vinyl aromatic hydrocarbon-diene arms to the polydiene arms is sufficient to produce a statistical blend with less than 5 weight percent homopolydiene.

    摘要翻译: 公开了一种用于生产六臂和八臂不对称径向嵌段共聚物的方法。 该方法包括阴离子聚合二烯和/或乙烯基芳烃以产生活性聚二烯和/或乙烯基芳族烃臂,依次阴离子聚合乙烯基芳族烃和二烯以产生活性嵌段共聚物臂并将两组臂结合在一起 在一步中与偶联剂可以连接6或8个臂,其中乙烯基芳族烃 - 二烯臂与聚二烯臂的摩尔比足以产生具有小于5重量%均聚二烯的统计学共混物。

    Low viscosity adhesive compositions containing asymmetric radial polymers
    8.
    发明授权
    Low viscosity adhesive compositions containing asymmetric radial polymers 失效
    含有不对称径向聚合物的低粘度粘合剂组合物

    公开(公告)号:US5554690A

    公开(公告)日:1996-09-10

    申请号:US489529

    申请日:1995-06-12

    CPC分类号: C08F297/044 C09J153/02

    摘要: A low viscosity adhesive composition which comprises:(a) an asymmetric radial block copolymer of a vinyl aromatic hydrocarbon and at least one conjugated diene having from 3 to 6 polymer arms, which:(i) contains from 33 to 85% by weight of polyvinyl aromatic hydrocarbon block/polydiene block copolymer arms and the balance polydiene homopolymer arms,(ii) has vinyl aromatic hydrocarbon blocks with block molecular weights of from 8000 to 30,000,(iii) has conjugated diene blocks in the copolymer arms with a molecular weight of at least 6000, and(iv) has a polyvinyl aromatic hydrocarbon content of from 10 to 40% by weight; and(b) from 20 to 400 parts per hundred parts of polymer of a tackifying resin.The invention also encompasses the polymers used in the adhesive.

    摘要翻译: 一种低粘度粘合剂组合物,其包含:(a)乙烯基芳族烃和至少一种具有3至6个聚合物臂的共轭二烯的不对称的径向嵌段共聚物,其:(i)含有33至85重量%的聚乙烯 芳族烃嵌段/聚二烯嵌段共聚物臂和余量聚二烯均聚物臂,(ii)具有阻挡分子量为8000至30,000的乙烯基芳族烃嵌段,(iii)共聚物臂中共轭二烯嵌段在分子量为 至少6000,和(iv)具有10至40重量%的聚乙烯基芳族烃含量; 和(b)每100份增粘树脂聚合物为20-400份。 本发明还包括在粘合剂中使用的聚合物。

    Method for preparing asymmetric radial copolymers having four first arms
and two second arms
    9.
    发明授权
    Method for preparing asymmetric radial copolymers having four first arms and two second arms 失效
    制备具有四个第一臂和两个第二臂的不对称径向共聚物的方法

    公开(公告)号:US5369175A

    公开(公告)日:1994-11-29

    申请号:US149598

    申请日:1993-11-09

    摘要: A method for preparing asymmetric radial polymers wherein the different polymeric arms are contacted sequentially with a coupling agent. The method narrows the relative arm distribution of the several asymmetric radial polymers produced and significantly increases the amount of total product having the desired ratio of polymeric arms. Any coupling agent known in the prior art to be useful in the production of asymmetric radial polymers may be used in the method of this invention but coupling agents having from three to about twelve functional groups are most effective.

    摘要翻译: 一种制备不对称辐射聚合物的方法,其中不同的聚合物臂与偶联剂依次接触。 该方法缩小了所生产的几种不对称径向聚合物的相对臂分布,并显着增加了具有所需聚合物臂比例的总产物的量。 现有技术中已知的可用于生产不对称径向聚合物的任何偶联剂可用于本发明的方法中,但是具有三个至约十二个官能团的偶联剂也是最有效的。

    Styrene-isoprene-styrene block copolymer composition and adhesives made
therefrom
    10.
    依法登记的发明
    Styrene-isoprene-styrene block copolymer composition and adhesives made therefrom 失效
    苯乙烯 - 异戊二烯 - 苯乙烯嵌段共聚物组合物和由其制成的粘合剂

    公开(公告)号:USH1402H

    公开(公告)日:1995-01-03

    申请号:US950617

    申请日:1992-09-24

    摘要: A linear styrene-isoprene-styrene block copolymer composition comprised of linear polymeric blocks wherein the block copolymer composition has a coupling efficiency of 25 to 82 percent, a polystyrene content of from 19 to 27 percent by weight, a polystyrene block molecular weight (peak polystyrene equivalent molecular weight as determined by gel permeation chromatography) of 12,000 to 18,000, and an overall molecular weight (peak polystyrene equivalent molecular weight as determined by gel permeation chromatography) of from 170,000 to 280,000. The invention also contemplates adhesive formulations comprising these block copolymer compositions and a tackifying resin.

    摘要翻译: 由直链聚合嵌段组成的线性苯乙烯 - 异戊二烯 - 苯乙烯嵌段共聚物组合物,其中嵌段共聚物组合物的偶联效率为25-82%,聚苯乙烯含量为19-27重量%,聚苯乙烯嵌段分子量 通过凝胶渗透色谱法测定的当量分子量)为12,000至18,000,总分子量(通过凝胶渗透色谱法测定的聚苯乙烯当量分子量)为17万至280,000。 本发明还考虑了包含这些嵌段共聚物组合物和增粘树脂的粘合剂制剂。