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    • 4. 发明授权
    • Films from aqueous dispersions of block copolymers having hydrogenated
conjugated diene block
    • 具有氢化共轭二烯嵌段的嵌段共聚物的水性分散体的膜
    • US5567760A
    • 1996-10-22
    • US339862
    • 1994-11-15
    • Brian W. WaltherGary R. Marchand
    • Brian W. WaltherGary R. Marchand
    • C08J3/07C08J5/18C08L53/02C08J3/03B29D7/00C08K5/01C08L53/00
    • C08J5/18C08J3/07C08L53/02C08J2353/02
    • 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.
    • 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。