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    • 4. 发明申请
    • Process of preparation of block copolymers and the block copolymers prepared therefrom
    • 嵌段共聚物的制备方法和由其制备的嵌段共聚物
    • US20050228149A1
    • 2005-10-13
    • US10897405
    • 2004-07-23
    • Prakash TrivediAtulkumar RajaMukesh Jesani
    • Prakash TrivediAtulkumar RajaMukesh Jesani
    • C08F293/00C08F297/00C08G75/20C08G75/23C08L53/00C08L81/00C08L81/06
    • C08G75/20C08F293/00C08F297/00C08G65/40C08G75/23C08G2261/126C08L53/00C08L53/005C08L81/06Y10S525/906
    • Processes for preparing block copolymers and the block copolymers prepared therefrom comprising at least two types of homoblock, all belonging to the polysulfone family, wherein each of the said homoblocks has an identical or different molecular weight of at least 1000 and comprises at least 5% of the overall weight of the block copolymer, and wherein the block copolymer has a molecular weight of at least 2000, the process steps comprising preparing each of the aforesaid homoblocks by reacting at least one aromatic diol with at least one aromatic dihalo compound, one of which contains at least one sulfone group, in at least one aprotic solvent in the presence of at least one alkali, optionally in the presence of an azeotropic agent and then reacting the aforesaid homoblocks together in at least an aprotic solvent, optionally followed by end-capping said block copolymer. The invention also relates to the block copolymers themselves, which are useful for molding, extrusion and can also be used as compatibilizers for their high molecular weight homologues.
    • 制备嵌段共聚物和由其制备的嵌段共聚物的方法包括至少两种类型的均聚嵌段,全部属于聚砜族,其中每个所述均聚嵌段具有至少1000的相同或不同分子量,并且包含至少5% 嵌段共聚物的总重量,并且其中所述嵌段共聚物的分子量至少为2000,所述方法步骤包括通过使至少一种芳族二醇与至少一种芳族二卤代化合物反应制备上述均聚嵌段,其中之一 在至少一种非质子传递溶剂中,在至少一种碱的存在下,任选地在共沸剂存在下​​,至少含有一个砜基,然后使至少一种非质子传递溶剂中的前述均聚物一起反应,然后进行封端 所述嵌段共聚物。 本发明还涉及嵌段共聚物本身,其可用于模制,挤出,也可用作其高分子量同系物的相容剂。