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    • 1. 发明授权
    • Aqueous PU dispersions with improved adhesion
    • 水性PU分散体具有改善的附着力
    • US08063138B2
    • 2011-11-22
    • US11827252
    • 2007-07-11
    • Thomas MünzmayTorsten PohlUwe Klippert
    • Thomas MünzmayTorsten PohlUwe Klippert
    • C08G18/08C09K3/00
    • C08G18/0828C08G18/10C08G18/12C08G18/3228C08G18/4208C08G18/73C08G18/755C08G18/3857C08G18/3872
    • A process for preparing polyester-polyurethane resin dispersions comprising: A) reacting i) one or more polyol components having a number average molecular weight of at least 300 daltons, at least 60% by weight of component i) being a polyester polyol with the fraction of aromatic carboxylic acid groups relative to all of the carboxylic acid groups used to prepared said polyester polyol being at least 60 mol %, ii) optionally one or more polyol components having a number average molecular weight of 62 to 299 daltons, and iii) optionally a compound which is monofunctional for the purposes of the isocyanate polyaddition reaction and has an ethylene oxide content of at least 50% by weight and a number average molecular weight of at least 400 daltons, with iv) a polyisocyanate to form a prepolymer, B) dissolving the prepolymer in an organic solvent, C) reacting the prepolymer with v) one or more aliphatic and/or alicyclic primary and/or secondary polyamines having a number average molecular weight of 60 to 300 daltons, said polyamine optionally being in combination with hydrazine or hydrazine hydrate, and vi) a hydrophilicized aliphatic diamine, D) precipitating the product from C) by adding water to form a dispersion, and E) removing the organic solvent.
    • 一种制备聚酯 - 聚氨酯树脂分散体的方法,包括:a)使i)一种或多种数均分子量为至少300道尔顿的多元醇组分,至少60重量%的组分i)作为聚酯多元醇, 芳族羧酸基团相对于用于制备所述聚酯多元醇的所有羧酸基团为至少60摩尔%,ii)任选的一种或多种数均分子量为62至299道尔顿的多元醇组分,和iii)任选地 为了异氰酸酯加聚反应的目的是单官能的化合物,其环氧乙烷含量至少为50重量%,数均分子量至少为400道尔顿,其中iv)多异氰酸酯以形成预聚物,B) 将预聚物溶解在有机溶剂中,C)使预聚物与v)一种或多种具有数均分子量的脂族和/或脂环族伯和/或仲多胺反应 r重量为60至300道尔顿,所述多胺任选与肼或水合肼组合,和vi)亲水化的脂族二胺,D)通过加入水使C)沉淀形成分散体,和E)除去有机物 溶剂。