Films from aqueous dispersions of block copolymers having hydrogenated
conjugated diene block
    71.
    发明授权
    Films from aqueous dispersions of block copolymers having hydrogenated conjugated diene block 失效
    具有氢化共轭二烯嵌段的嵌段共聚物的水性分散体的膜

    公开(公告)号:US5567760A

    公开(公告)日:1996-10-22

    申请号:US339862

    申请日:1994-11-15

    摘要: Aqueous dispersions, and films prepared therefrom, comprising an organic phase of block copolymers and optional extenders wherein the block copolymers corresponds to the formula:A-B-X.sub.m -(B-A).sub.nwherein each A is a polymer block of a monovinylidene aromatic monomer and conjugated dienes, each B is a polymer block of one or more conjugated dienes and, optionally, one or more monovinylidene aromatic monomers, X is the remnant of a multifunctional coupling agent, m is 0 or 1, and n is an integer from 1 to 5. Each A polymer block has a weight average molecular weight from 4,000 to 15,000 Daltons. Each B polymer block has a weight average molecular weight from 20,000 to 200,000 Daltons. The total monovinylidene monomer content is from 6 to 30 percent by weight of the organic phase. The effective phase volume of the A polymer block in the organic phase is from 8 to 20 percent. Thin elastomeric articles prepared from the emulsions have improved tensile strength properties. Also claimed is a process for the preparation of such films.

    摘要翻译: 水分散体和由其制备的膜包含嵌段共聚物和任选的增量剂的有机相,其中嵌段共聚物对应于下式:AB-Xm-(BA)n,其中每个A是单亚乙烯基芳族单体和共轭二烯的聚合物嵌段, 每个B是一种或多种共轭二烯和任选的一种或多种单亚乙烯基芳族单体的聚合物嵌段,X是多官能偶联剂的残余物,m是0或1,n是1至5的整数。 聚合物嵌段具有4,000至15,000道尔顿的重均分子量。 每个B聚合物嵌段的重均分子量为20,000至200,000道尔顿。 总亚乙烯基单体含量为有机相重量的6至30%。 有机相中的A聚合物嵌段的有效相体积为8〜20%。 由乳液制备的薄弹性制品具有改进的拉伸强度性能。 还要求的是制备这种膜的方法。

    Anionic polymerization process
    73.
    发明授权
    Anionic polymerization process 失效
    阴离子聚合工艺

    公开(公告)号:US5225493A

    公开(公告)日:1993-07-06

    申请号:US936188

    申请日:1992-08-26

    IPC分类号: C08F2/42 C08F6/02

    CPC分类号: C08F2/42 C08F6/02

    摘要: A process for anionic polymerization of polymerizable monomers with an organo lithium initiator followed by polymerization termination characterized in that terminated reaction products are neutralized by contacting with sulfuric acid, phosphoric acid or a mixture thereof.

    摘要翻译: 一种可聚合单体与有机锂引发剂进行阴离子聚合的方法,随后进行聚合终止,其特征在于通过与硫酸,磷酸或其混合物的接触中和终止的反应产物。

    Catalyst and process for polymerizing olefins
    76.
    发明授权
    Catalyst and process for polymerizing olefins 失效
    催化剂和烯烃聚合方法

    公开(公告)号:US5045612A

    公开(公告)日:1991-09-03

    申请号:US510492

    申请日:1990-04-18

    IPC分类号: C08F4/658 C08F4/60 C08F10/00

    CPC分类号: C08F10/00

    摘要: Olefins are polymerized under solution polymerization conditions in the presence of the solid catalytic product resulting from removing the liquid components from the product resulting from admixing in an inert diluent and in an atmosphere which excludes moisture and oxygen (A) at least one hydrocarbon soluble organomagnesium compound; (B) at least one organic hydroxyl-containing compound; (C) at least one reducing halide source; (D) at least one transition metal (Tm) alkoxide.

    摘要翻译: 烯烃在溶液聚合条件下在固体催化剂存在下进行聚合,这是由惰性稀释剂和不含水分和氧气的气氛中除去来自产物的液体组分得到的(A)至少一种可溶于烃的有机镁化合物 ; (B)至少一种含有机羟基化合物; (C)至少一种还原卤素源; (D)至少一种过渡金属(Tm)醇盐。