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    Process for producing a modified styrene polymer
    6.
    发明授权
    Process for producing a modified styrene polymer 失效
    制备改性苯乙烯聚合物的方法

    公开(公告)号：US4912170A

    公开(公告)日：1990-03-27

    申请号：US288981

    申请日：1988-12-22

    申请人： Tadashi Niwa ,  Masayuki Kato ,  Yoshio Taguchi ,  Chihiro Imai ,  Tokuo Makishima, deceased ,  by Nobuko Makishima, legal representative

    发明人： Tadashi Niwa ,  Masayuki Kato ,  Yoshio Taguchi ,  Chihiro Imai ,  Tokuo Makishima, deceased ,  by Nobuko Makishima, legal representative

    IPC分类号： C08F8/42 ,  C08F8/00

    CPC分类号： C08F8/00

    摘要： This invention relates to a p-methyl styrene polymer represented by the following formula: ##STR1## Z denotes a group such as a functional group. Poly p-methylstyrene (PPMS) is lithiated by reaction with n-butyllithium. The lithiated PPMS is used to prepare polymers containing functional groups. As an example, a solution of PPMS (MW 260,000), 1.0 g in 20 ml of cyclohexane, was reacted with n-butyllithium, 8.5 mmol, and tetramethylethylenediamine, 8.7 mmol, for 20 hours to obtain a precipitate. The precipitate was dissolved in THF, and CO.sub.2 was blown into the solution. The solution was washed with an aqueous solution of HCl and dropped into methanol to obtain a solid polymer having carboxyl group functionality.

    摘要翻译： 本发明涉及由下式表示的对甲基苯乙烯聚合物：＆lt; IMAGE＆gt; Z表示官能团等基团。 聚对甲基苯乙烯（PPMS）通过与正丁基锂反应而锂化。 锂化PPMS用于制备含有官能团的聚合物。 作为一个例子，将PPMS（MW 260,000），1.0g在20ml环己烷中的溶液与正丁基锂8.5mmol和四甲基乙二胺8.7mmol反应20小时，得到沉淀。 将沉淀物溶解在THF中，并将CO 2吹入溶液中。 溶液用HCl水溶液洗涤，滴入甲醇中，得到具有羧基官能团的固体聚合物。