Thermofusible elastomer compositions
    4.
    发明授权
    Thermofusible elastomer compositions 失效
    热熔弹性体组合物

    公开(公告)号:US6072004A

    公开(公告)日:2000-06-06

    申请号:US199304

    申请日:1998-11-25

    IPC分类号: C08L53/02 C08F8/00 C08L23/04

    CPC分类号: C08L53/025

    摘要: The present invention provides a thermofusible elastomer composition comprising:(a) 100 phr of a selectively hydrogenated block copolymer component comprising an A'B' block copolymer and a multiblock copolymer having at least two end blocks A and at least one mid block B wherein the A' and A blocks are monoalkenyl arene polymer blocks and the B' and B blocks are substantially completely hydrogenated conjugated diene polymer blocks, the number average molecular weight of the A' and A blocks are between about 3,000 and about 7,000 and the monoalkenyl arene content of the multiblock copolymer is between about 7% and about 22% by weight;(b) 20 to 50 phr of at least one high melt flow polyolefin;(c) 0 to 19 phr of a plasticizing oil selected from naphthenic oils and paraffinic oils; and(d) 0 to 40 phr of at least one poly(conjugated diene) block compatible resin wherein the elastomer composition has a particle size of 1400 .mu.m or less.This composition is used in low shear processes.

    摘要翻译: 本发明提供了一种热熔性弹性体组合物,其包含:(a)100phr的包含A'B'嵌段共聚物的选择性氢化嵌段共聚物组分和具有至少两个端嵌块A和至少一个中间嵌段B的多嵌段共聚物,其中 A'和A嵌段是单烯基芳烃聚合物嵌段,B'和B嵌段是基本上完全氢化的共轭二烯聚合物嵌段,A'和A嵌段的数均分子量为约3,000至约7,000,单烯基芳烃含量 的多嵌段共聚物的重量百分比为约7%至约22% (b)20至50phr的至少一种高熔体流动聚烯烃; (c)0〜19phr选自环烷油和石蜡油的增塑油; 和(d)0〜40phr的至少一种聚(共轭二烯)嵌段相容性树脂,其中弹性体组合物的粒度为1400μm以下。 该组合物用于低剪切过程。