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    • 58. 发明授权
    • Star polymer and method of producing same
    • 星形聚合物及其制造方法
    • US09023950B2
    • 2015-05-05
    • US13639792
    • 2011-04-18
    • Akihiro ShiraiTakeshi Niitani
    • Akihiro ShiraiTakeshi Niitani
    • C08F12/22C08F297/04C08F212/14C08F12/24C08F297/02G03F7/039
    • C08F12/22C08F12/24C08F212/14C08F297/023C08F297/044G03F7/0392
    • The present invention provides a styrene-based star polymer with narrow dispersion and suitable as a resist material, etc. A star polymer of the present invention is represented by the formula A[C(Y)Xm]n (wherein A represents a polyvalent aliphatic hydrocarbon group with 4-15 carbons, C represents a carbon atom, X represents a styrene-based polymer chain, Y represents a hydroxy group or an oxo group, m represents an integer of 1 or 2, and n represents any integer from 2 to 5, with the proviso that if Y is a hydroxy group, m is 2, and if Y is an oxo group, m is 1). The star polymer can be produced by reacting a styrene-based polymer having an anionic end, and an aliphatic carboxylic acid ester represented by A(COOR)n (wherein R represents an alkyl group having 1-8 carbons, and A and n are as defined for the above formula).
    • 本发明提供具有窄分散性且适合作为抗蚀剂材料等的苯乙烯类星形聚合物。本发明的星形聚合物由式A [C(Y)Xm] n表示(其中A表示多价脂族 具有4-15个碳原子的烃基,C表示碳原子,X表示苯乙烯基聚合物链,Y表示羟基或氧代基,m表示1或2的整数,n表示2〜 5,条件是如果Y是羟基,m是2,如果Y是氧代基,m是1)。 星形聚合物可以通过使具有阴离子末端的苯乙烯基聚合物和由A(COOR)n(其中R表示具有1-8个碳原子的烷基)和A与n表示的脂族羧酸酯 定义为上述公式)。