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    • 2. 发明授权
    • Aqueous dispersed solution of substituted succinic anhydride and process
for producing the same
    • 取代琥珀酸酐的水分散溶液及其制备方法
    • US4882087A
    • 1989-11-21
    • US213476
    • 1988-06-30
    • Shigehiko YoshiokaHideto YamadaHisatake SatoMotokazu Kamei
    • Shigehiko YoshiokaHideto YamadaHisatake SatoMotokazu Kamei
    • B01F17/52B01J13/00D21H17/14D21H17/15D21H17/16D21H17/37D21H17/45D21H17/53
    • D21H17/455D21H17/15D21H17/16D21H17/375
    • An aqueous dispersed solution of a substituted succinic anhydride which comprises an aqueous soluble copolymer (A) having 50 percent or more by mol of (meth)acrylamide (a) 1 percent or more by mol of N,N-dialkylamino.alkyl(meth)acrylamide (b) as monomer ingredients, aqueous soluble copolymer (B) having 50 percent or more by mol of (meth)acrylamide (a), 1 percent or more by mol of N,N-dialkylamino.alkyl(metho)acrylamide (b) and 49 percent or less by mol of other copolymer monomer (c) as monomer ingredients, or both of the dqueous soluble copolymer (A) and the aqueous soluble copolymer (B), and a process for producing an aqueous dispersed solution of a substituted succinic anhydride prepared by dispersing the aqueous soluble copolymer (A) or the aqueous soluble copolymer (B) or a mixture (C) of 99 to 99.9 percent by weight of the substituted succinic anhydride (d) and 10 to 0.1 percent by weight of an oil-in-water type surfactant (e) in aqueous solution containing both the aqueous soluble copolymer (A) and the aqueous soluble copolymer (B). Thus, the aqueous dispersion can provide an excellent sizing effect in case applied as a sizing agent in paper making process but also hs preferable dilute dispersibility of aqueous dispersion, does not possibly contaminate wires, rolls and carpets of a paper making machine when applied as a sizing agent in the practical paper making process with properties of capable of continuously operating for a long period of time.
    • 取代琥珀酸酐的水分散溶液,其包含含有50%或更多摩尔(甲基)丙烯酰胺(a)的1%或更多摩尔的N,N-二烷基氨基烷基(甲基)丙烯酸酯的水溶性共聚物(A) 丙烯酰胺(b)作为单体成分,含有50%或更多摩尔(甲基)丙烯酰胺(a)的水溶性共聚物(B),1%或更多的N,N-二烷基氨基烷基(甲基)丙烯酰胺 )和49%以下的其它共聚物单体(c)作为单体成分,或水溶性共聚物(A)和水溶性共聚物(B)两者的水溶性共聚物(A)和水溶性共聚物(B)的水分散溶液的制造方法 通过将水溶性共聚物(A)或水溶性共聚物(B)或99〜99.9重量%的取代琥珀酸酐(d)的混合物(C)分散而得到的琥珀酸酐和10〜0.1重量% 水包油型表面活性剂(e)在含有水溶液的水溶液中 e共聚物(A)和水溶性共聚物(B)。 因此,水分散体可以在造纸过程中作为上浆剂使用时提供优异的施胶效果,而且也可以优选水性分散体的稀释分散性,当作为造纸机应用时不会污染造纸机的丝线,辊和地毯 上浆剂在实际造纸过程中具有长时间持续运行的性能。