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    • 2. 发明申请
    • AQUEOUS RADIATION-CURABLE EPOXY ACRYLATE DISPERSIONS
    • 水性可辐射固化环氧丙烯酸酯分散体
    • US20130109784A1
    • 2013-05-02
    • US13497457
    • 2010-09-13
    • Juergen BaroLaurence DruenePaul BirnbrichHans-Josef Thomas
    • Juergen BaroLaurence DruenePaul BirnbrichHans-Josef Thomas
    • C09D163/00
    • C09D163/00C08G59/1466C08G59/182C08G2650/58C08L63/10C08L71/02C09D5/022C09D5/027C08L2666/22
    • The invention relates to aqueous radiation-hardenable epoxy acrylate dispersions comprising (a) an epoxy acrylate resin (P*) with at least two acrylate groups per molecule, wherein at 25 degrees Celsius, said epoxy acrylate resin is not self-disperging in water; and (b) a dispergator (D*) with at least one acrylate group per molecule, wherein said dispersions can be produced by converting, in a first step (i), in the presence of a catalyst if need be, one or several compounds (A) selected from the group of non-ionic compounds having a HLB value of less than 12, and containing at least two oxirane groups per molecule, with one or several compounds (B) selected from the group of non-ionic compounds having a HLB value in the range from 12 to 20, and which contain at least one h-acid group (ZH) per molecule. The compounds (A) and (B) are employed at an equivalence ratio EpO (A):ZH (B) in the range from 1.3:1 to 400:1, and in a second step (ii), the reactive mixture thus obtained is converted, in the presence of a catalyst if need be, with one or several non-ionic compounds having a HLB value of less than 12, and containing at least two oxirane groups per molecule (compounds A), and with one or several compounds (C) selected from the group of non-ionic compounds having a HLB value of less than 12, and which contain at least two H-acid groups. The compounds (A) and (C) are employed at an equivalence ratio EpO (A):ZH (C) in the range from 1.1:1 to 20:1. In a third step (iii), the reactive mixture thus obtained is converted, in the presence of a catalyst if need be, with acrylic acid by ring opening of all epoxy groups. In a fourth step (iv), the reactive mixture thus obtained is disperged in water.
    • 本发明涉及含水辐射可硬化环氧丙烯酸酯分散体,其包含(a)每分子具有至少两个丙烯酸酯基团的环氧丙烯酸酯树脂(P *),其中在25℃下所述环氧丙烯酸酯树脂在水中不自分散; 和(b)每分子具有至少一个丙烯酸酯基团的分散剂(D *),其中所述分散体可以通过在催化剂存在下,在第一步骤(i)中转化来制备,如果需要,可以使用一种或几种化合物 (A),其选自HLB值小于12的非离子化合物,并且每分子含有至少两个环氧乙烷基团,其中一种或几种化合物(B)选自具有 HLB值为12〜20,每分子含有至少一个h酸基(ZH)。 化合物(A)和(B)以当量比EpO(A):ZH(B)在1.3:1至400:1的范围内使用,在第二步(ⅱ)中,由此得到的反应混合物 在催化剂存在的情况下,如果需要,可以与一种或多种HLB值小于12的非离子化合物,每分子含有至少两个环氧乙烷基团(化合物A)和一种或多种化合物 (C)选自HLB值小于12的非离子化合物,并含有至少两个H酸基团。 化合物(A)和(C)以当量比EpO(A):ZH(C)在1.1:1至20:1的范围内使用。 在第三步骤(iii)中,如果需要的话,在催化剂存在下,如此得到的反应混合物通过所有环氧基的开环与丙烯酸一起转化。 在第四步骤(iv)中,将由此获得的反应混合物分散在水中。