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    • 7. 发明授权
    • Process for producing aqueous resin dispersion
    • 生产水性树脂分散体的方法
    • US5179158A
    • 1993-01-12
    • US564479
    • 1990-08-09
    • Kishiro AzumaYoshio MoriMasayoshi Okubo
    • Kishiro AzumaYoshio MoriMasayoshi Okubo
    • C08F2/24C08F2/26C08F290/04
    • C08F290/046C08F290/044
    • A process for producing an aqueous resin dispersion is disclosed, which comprises dissolving a macromonomer having a radical polymerizable group at the terminal thereof and an oil-soluble radical polymerization initiator in a hydrophobic vinyl monomer copolymerizable with the macromonomer to form a solution, emulsifying the solution in an aqueous medium in the presence of an emulsifying agent selected from (A) an alkali sulfosuccinate anionic surfactant and (B) a surfactant comprising from 2 to 98% by weight of (i) an alkali sulfonate anionic surfactant other than (A) or (ii) an alkali sulfuric ester anionic surfactant, and from 98 to 2% by weight of a nonionic surfactant having an HLB value of 10 or more, and copolymerizing the macromonomer and the vinyl monomer at an elevated temperature. The aqueous resin dispersion has a high content of a graft polymer with a reduced content of unreacted macromonomer.
    • 公开了一种水性树脂分散体的制造方法,其特征在于,将其末端具有自由基聚合性基团的大分子单体和油溶性自由基聚合引发剂溶解在与大分子单体共聚的疏水性乙烯基单体中,形成溶液, 在(A)碱金属磺基琥珀酸盐阴离子表面活性剂和(B)包含2-98重量%的(ⅰ)除(A)之外的碱金属磺酸盐阴离子表面活性剂的表面活性剂的存在下,在水性介质中, (ii)碱硫酸酯阴离子表面活性剂和98〜2重量%HLB值为10以上的非离子表面活性剂,并在高温下共聚大分子单体和乙烯基单体。 含水树脂分散体具有高含量的未反应的大分子单体含量降低的接枝聚合物。