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    Process for producing a modified styrene polymer
    2.
    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

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

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

    IPC: C08F8/42 ,  C08F8/00

    CPC classification number: C08F8/00

    Abstract: 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.

    Abstract translation: 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。

    Magnesium-containing solid
    5.
    发明授权
    Magnesium-containing solid 失效
    含镁固体

    公开(公告)号：US4426314A

    公开(公告)日：1984-01-17

    申请号：US320164

    申请日：1981-11-10

    Applicant: Makoto Miyazaki ,  Takeshi Nomura ,  Chihiro Imai ,  Makoto Yoda

    Inventor： Makoto Miyazaki ,  Takeshi Nomura ,  Chihiro Imai ,  Makoto Yoda

    IPC: C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F4/02

    CPC classification number: C08F10/00

    Abstract: According to a first aspect of this invention, there is provided A magnesium-containing solid, obtained by contacting the reaction product of (1):(A) metallic magnesium;(B) a halogenated hydrocarbon of the general formula RX in which R stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms, and X stands for a halogen atom; and(C) an alkoxy compound of the general formula X'.sub.m C(OR').sub.4-m in which X' stands for a hydrogen or halogen atom, or an alkyl, aryl or cycloalkyl group having 1 to 10 carbon atoms, R' stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms, and m is 0, 1 or 2, with (2) an electron donative compound and hydrogen halide. The supported transition metal in combination with an organoaluminum co-catalyst is employed as an olefin polymerization catalyst.

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