| 摘要 |
A styrene random copolymer includes at least one unit of styrene derivative and at least one unit of macromonomer. The at least one unit of styrene derivative is polymerized from a styrene derivative monomer of formula (1). The at least one unit of macromonomer is polymerized from a macromonomer of formula (2).In formulae (1) and (2),R1 is selected from the group consisting of hydrogen, halogen, and alkyl groups with 1~20 carbon atoms,R2 is at least one selected from the group consisting of saturated hydrocarbons with 1~20 carbon atoms, aromatic groups, and cycloalkyl groups with the proviso that R2 is not -CO- or -CH2-C6H4-,R3 is a saturated hydrocarbon group with 1~10 carbon atoms,X is at least one ion polymerizable monomer unit.The amount of the macromonomer is 0.1~50% by weight based on the weight of the random copolymer, and the weight average molecular weight of the random copolymer ranges from about 50,000 to about 2,000,000.
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