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    Hydroxy-functional (meth)acrylic copolymers and coating compositions
    5.
    发明公开
    Hydroxy-functional (meth)acrylic copolymers and coating compositions 有权
    Hydroxyfunktionelle（Meth）丙烯酸酯 - 共聚物Überzugsmischungen

    公开(公告)号：EP1201690A2

    公开(公告)日：2002-05-02

    申请号：EP01122704.8

    申请日：2001-09-21

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Delmotte, Ann ,  Huybrechts, Josef ,  Kerber, Hermann ,  Ley, Olaf ,  Paulussen, Harold ,  Vaes, Ann

    IPC分类号： C08F220/28 ,  C09J133/14

    CPC分类号： C09D175/04 ,  C08F8/14 ,  C08F2810/20 ,  C08G18/6237 ,  Y10T428/31511 ,  Y10T428/31522 ,  Y10T428/31786 ,  Y10T428/31928 ,  Y10T428/31935 ,  C08F220/28

    摘要： The invention relates to hydroxy-functional (meth)acrylic copolymers having an OH value from 40 to 260 mg KOH/g, a number average molecular mass (Mn) from 1500 to 20000 g/mole and a glass transition temperature Tg from -40 °C to 80 °C, containing

    A) polymerized monomers of at least one epoxy-functional, olefinically unsaturated monomer,
    B) at least one compound having a carboxyl group and at least one hydroxyl group in the molecule that is reacted with the epoxy functional group of the polymerized olefincially unsaturated monomers,
    C) at least one additional polymerized olefinically unsaturated monomer capable of radical polymerization which is different from component A) and
    D) optionally at least one lactone reacted with the polymer.
    It also relates to processes for making the copolymers and to coating compositions that contain the hydroxy-functional (meth)acrylic copolymers and to the use thereof in multi-layer automotive coatings.

    摘要翻译： 本发明涉及OH值为40〜260mgKOH / g，数均分子量（Mn）为1500〜20000g / mol，玻璃化转变温度Tg为-40℃的羟基官能（甲基）丙烯酸系共聚物。 C至80℃，含有A）至少一种环氧官能的烯属不饱和单体的聚合单体，B）至少一种在分子中与环氧官能团反应的具有羧基和至少一个羟基的化合物 的聚合的烯基不饱和单体，C）至少一种能够自由基聚合的另外的聚合的烯属不饱和单体，其不同于组分A）和D）任选地至少一种与聚合物反应的内酯。 它还涉及制备共聚物和含有羟基官能（甲基）丙烯酸共聚物的涂料组合物的方法及其在多层汽车涂料中的用途。