Method for Producing (Poly-C2-C4 Alkylene Glycol)-Mono(Meth)Acrylic Esters

    公开(公告)号:US20080275166A1

    公开(公告)日:2008-11-06

    申请号:US11574587

    申请日:2005-09-02

    IPC分类号: C04B24/28 C08F4/30 C08F120/08

    CPC分类号: C08F299/065 C08G65/3322

    摘要: The present invention relates to a process for the preparation of poly-C2-C4-alkylene glycol monoacrylic acid esters and monomethacrylic acid esters, and a process for the preparation of copolymers of such poly-C2-C4-alkylene glycol mono(meth)acrylic acid esters with acrylic acid or methacrylic acid and the use of the polymers as a plasticizing additive in cement-containing preparations.The preparation of the poly-C2-C4-alkylene glycol monoacrylic acid esters and monomethacrylic acid esters is effected by reacting acrylic anhydride or methacrylic anhydride ((meth)acrylic anhydride A below) with a poly-C2-C4-alkylene glycol compound P carrying at least one OH group in the presence of a base, the base being selected from basic compounds which have a solubility in the poly-C2-C4-alkylene glycol compound P of not more than 10 g/l at 90° C., and the molar ratio of (meth)acrylic anhydride A to compound P (molar ratio A:P) being in the range from 1:1 to 1.095:1, preferably in the range from 1.005:1 to 1.09:1, in particular in the range from 1.01:1 to 1.085:1 and particularly preferably in the range from 1.02:1 to 1.08:1.The preparation of copolymers of (meth)acrylic acid with poly-C2-C4-alkylene glycol mono(meth)acrylic acid esters comprises: i) preparation of a poly-C2-C4-alkylene glycol mono(meth)acrylic acid ester by reacting (meth)acrylic anhydride A with a poly-C2-C4-alkylene glycol compound P carrying at least one OH group in the presence of a base by processes according to the invention, and ii) free radical copolymerization of the poly-C2-C4-alkylene glycol mono(meth)acrylic acid ester obtained in step i) with acrylic acid and/or methacrylic acid and, if appropriate, further ethylenically unsaturated monomers.

    Multistage emulsion polymer
    19.
    发明授权
    Multistage emulsion polymer 有权
    多级乳液聚合物

    公开(公告)号:US06552116B1

    公开(公告)日:2003-04-22

    申请号:US09703875

    申请日:2000-11-02

    IPC分类号: C08F222

    摘要: A multi-stage emulsion polymer containing at least one first domain having a glass transition temperature Tg of from −10 to +40° C. and at least one second domain having a Tg of from +50 to 120° C., the weight ratio of the first domain to the second domain being within the range from 90:10 to 50:50. The first and/or the second domain containing from 0.1 to 10% by weight of a nitrogen-coutaining adhesion monomer and the first domain containing at least 10% by weight of vinyl aromatic compounds and/or the second domain containing at least 15% by weight of vinyl aromatic compounds and/or C4 to C12 alkylmethacrylates.

    摘要翻译: 含有玻璃化转变温度Tg为-10〜+ 40℃的至少一个第一结构域和Tg为+ 50〜120℃的至少一个第二结构域的多阶段乳液聚合物,重量比 的第一个域到第二个域的范围在90:10到50:50之间。 第一和/或第二结构域含有0.1-10%(重量)的氮 - 粘着粘合单体,第一结构域含有至少10%重量的乙烯基芳族化合物和/或第二结构域,其含有至少15% 乙烯基芳族化合物和/或C 4至C 12甲基丙烯酸烷基酯的重量。