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    • 2. 发明授权
    • Highly branched block copolymers
    • 高支化嵌段共聚物
    • US06172180B2
    • 2001-01-09
    • US09140284
    • 1998-08-25
    • Lawrence F. HancockStephen M. FaganClaudy J.-P. Mullon
    • Lawrence F. HancockStephen M. FaganClaudy J.-P. Mullon
    • C08G7523
    • C08G83/005C08G75/23C08G81/00C08G83/002C08L71/00C08L71/02
    • The present invention relates to a block copolymer containing 1-50 first polymer segments and 1-50 second polymer segments. Each first polymer segment has an average mole fraction of monomers possessing a branch point of 0.0001 to 1, whereas each second polymer segment has an average mole fraction of monomers possessing a branch point of 0 to 0.5. The average molecular weights range from 5-2,000 kDa for the first polymer segments, which constitute 5-95% by weight of the block copolymer. The average molecular weights also range from 5-2,000 kDa for the second polymer segments, which constitute 5-95% by weight of the block copolymer. The ratio of the average mole fraction of monomers possessing a branch point of the second polymer segments to that of the first polymer segments is 0 to 0.5. An example of such a copolymer has ethylene oxide or ethylene oxide/propylene oxide as the first polymer segment and polysulfone as the second polymer segment. This block copolymer can further be blended with a bulk polymer.
    • 本发明涉及含有1-50个第一聚合物链段和1-50个第二聚合物链段的嵌段共聚物。 每个第一聚合物链段具有分支点为0.0001至1的单体的平均摩尔分数,而每个第二聚合物链段具有分支点为0至0.5的单体的平均摩尔分数。 第一聚合物链段的平均分子量范围为5-2,000kDa,占嵌段共聚物重量的5-95%。 对于第二聚合物链段,平均分子量也为5-2,000kDa,占嵌段共聚物重量的5-95%。 具有第二聚合物链段的分支点的单体的平均摩尔分数与第一聚合物链段的平均摩尔分数之比为0至0.5。 作为第二聚合物链段,这种共聚物的例子有环氧乙烷或环氧乙烷/环氧丙烷作为第一聚合物链段和聚砜。 该嵌段共聚物可进一步与本体聚合物共混。