Process for preparation of antistatic agent and methacrylic resin
composition
    4.
    发明授权
    Process for preparation of antistatic agent and methacrylic resin composition 失效
    制备抗静电剂和甲基丙烯酸树脂组合物的方法

    公开(公告)号:US5164452A

    公开(公告)日:1992-11-17

    申请号:US359704

    申请日:1989-05-31

    CPC分类号: C08F287/00 C08F297/026

    摘要: An antistatic agent capable of imparting a permanent antistatic property to a methacrylic resin is prepared as follows. First, an alkyl methacrylate is subjected to living polymerization in an atmosphere substantially free of water in the pressure of at least one compound acting as a source for supplying an anion selected from HF.sub.2.sup.-, (CH.sub.3).sub.3 SiF.sub.2.sup.- and F.sup.- by using as an initiator a compound represented by the formula (I) or (II): ##STR1## wherein R is H or CH.sub.3 and R.sup.1 is H or alkyl; second, a methacrylic acid ester comprising at least 80 mole % of a methacrylic acid ester represented by the formula (III): ##STR2## wherein R.sup.2 is alkyl and m is from 1 to 6, is subjected to living polymerization in the presence of the polymer obtained in the first step, to prepare a di-block or tri-block copolymer; and then, amino groups of segments derived from the methacrylic acid ester of the formula (III) in the block copolymer are quaternized.

    Preparation method of comb copolymer, acrylic comb copolymer, and impact
resistant resin composition
    5.
    发明授权
    Preparation method of comb copolymer, acrylic comb copolymer, and impact resistant resin composition 失效
    COMB共聚物,丙烯酸共聚物和抗冲击树脂组合物的制备方法

    公开(公告)号:US5116910A

    公开(公告)日:1992-05-26

    申请号:US711950

    申请日:1991-06-07

    摘要: A comb copolymer consisting of a methacrylic macromonomer as a branch ingredient and acrylic ester as a backbone ingredient and being suitable for an acrylic elastomer material which is excellent in transparency, weatherability and mechanical strength; an impact resistant acrylic resin composition obtained by blending the above comb copolymer with a PMMA (co)polymer; and a comb copolymer similarly consisting of a methacrylic macromonomer as a branch component and acrylic ester as a backbone component and being an acrylic resin which is excellent in transparency, weatherability, gloss and light resistance, are disclosed in this invention.Preparation methods of the high molecular weight comb copolymers useful for molding materials comprising the above mentioned comb copolymers are disclosed. The disclosed preparation methods comprise, in the copolymerization of the macromonomer having a vinyl group at one end of the main chain with a vinyl monomer, conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a solvent which is a good solvent for the macromonomer and has a solubility of 10% by weight or more in water at 30.degree. C., or conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a halogenated hydrocarbon solvent which is a good solvent for the macromonomer and has an azeotropic point with water ranging from 30.degree. to 90.degree. C. at a temperature above said azeotropic point.

    Process for the preparation of poly(meth)acrylic acid ester
    6.
    发明授权
    Process for the preparation of poly(meth)acrylic acid ester 有权
    制备聚(甲基)丙烯酸酯的方法

    公开(公告)号:US6160070A

    公开(公告)日:2000-12-12

    申请号:US230359

    申请日:1999-01-25

    IPC分类号: C08F2/38 C08F20/12 C08F120/18

    CPC分类号: C08F20/12 C08F2/38

    摘要: Disclosed is a process for the preparation of a poly-(meth)acrylate ester, which comprises, upon polymerization of a (meth)acrylate ester by using an organometallic compound ((C.sub.5 Me.sub.5).sub.2 SmMe(thf) or the like) having at least one polymerization initiating site, carrying out the polymerization in the presence of a compound (acetophenone, 4-methyl-2-pentanone or the like), which contains in the molecule thereof a reactive hydrogen atom, as a chain transfer agent. The above-described process makes it possible to control the molecular weight easily, reduce the using amount of the organometallic compound, prevent the coloring of the poly(meth)acrylate ester and improve thermal decomposition resistance.

    摘要翻译: PCT No.PCT / JP97 / 02574 Sec。 371日期1999年1月25日 102(e)日期1999年1月25日PCT提交1997年7月24日PCT公布。 第WO98 / 04595号公报 日期1998年2月5日公开是制备聚(甲基)丙烯酸酯的方法,其包括在使用有机金属化合物((C5Me5)2SmMe(thf)等聚合(甲基)丙烯酸酯时) )具有至少一个聚合引发位点,在其分子中含有反应性氢原子的化合物(苯乙酮,4-甲基-2-戊酮等)存在下进行聚合作为链转移剂 。 上述方法可以容易地控制分子量,减少有机金属化合物的使用量,防止聚(甲基)丙烯酸酯的着色,提高耐热分解性。

    Method for preparing graft copolymer
    8.
    发明授权
    Method for preparing graft copolymer 失效
    接枝共聚物的制备方法

    公开(公告)号:US5336725A

    公开(公告)日:1994-08-09

    申请号:US901210

    申请日:1992-06-19

    IPC分类号: C08F265/06 C08F220/18

    CPC分类号: C08F265/06

    摘要: A method for preparing a graft copolymer is here disclosed which is characterized by comprising the step of carrying out a living polymerization of at least one (meth)acrylic ester by the use of a polymeric compound as an initiator having one or more units represented by the following formula (I) in a molecular chain substantially in the absence of water in the presence of a Lewis acid or a donor compound of an anion selected from the group consisting of HF.sub.2.sup.-, (CH.sub.3).sub.3 SiF.sub.2.sup.- and F.sup.- : ##STR1## wherein R is hydrogen or an alkyl group having 1 to 6 carbon atoms, and R' is an alkyl group having 1 to 12 carbon atoms.

    摘要翻译: 这里公开了制备接枝共聚物的方法,其特征在于包括通过使用聚合化合物作为引发剂进行至少一种(甲基)丙烯酸酯的活性聚合的步骤,所述聚合化合物是具有一个或多个由 在路易斯酸或选自HF 2 - ,(CH 3)3 SiF 2 - 和F - 的阴离子的供体化合物的存在下,基本上不存在水的分子链中的下式(I) (I)其中R是氢或具有1至6个碳原子的烷基,R'是具有1至12个碳原子的烷基。

    Preparation method of comb copolymer, acrylic comb copolymer, and impact
resistant resin composition
    10.
    发明授权
    Preparation method of comb copolymer, acrylic comb copolymer, and impact resistant resin composition 失效
    COMB共聚物,丙烯酸共聚物和抗冲击树脂组合物的制备方法

    公开(公告)号:US5053461A

    公开(公告)日:1991-10-01

    申请号:US399992

    申请日:1989-08-29

    摘要: A comb copolymer consisting of a methacrylic macromonomer as a branch ingredient and acrylic ester as a backbone ingredient and being suitable for an acrylic elastomer material which is excellent in transparency, weatherability and mechanical strength; an impact resistant acrylic resin composition obtained by blending the above comb copolymer with a PMMA (co)polymer; and a comb copolymer similarly consisting of a methacrylic macromonomer as a branch component and acrylic ester as a backbone component and being an acrylic resin which is excellent in transparency, weatherability, gloss and light resistance, are disclosed in this invention.Preparation methods of the high molecular weight comb compolymers useful for molding materials comprising the above mentioned comb copolymers are disclosed. The disclosed preparation methods comprise, in the copolymerization of the macromonomer having a vinyl group at one end of the main chain with a vinyl monomer, conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a solvent which is a good solvent for the macromonomer and has a solubility of 10% by weight or more in water at 30.degree. C., or conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a halogenated hydrocarbon solvent which is a good solvent for the macromonomer and has an azeotropic point with water raning from 30.degree. to 90.degree. C. at a temperature above said azeotropic point.