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    • 11. 发明授权
    • Method for producing self- emulsifiable aqueous polyurethane resins having improved characteristics
    • 具有改进特性的自乳化水性聚氨酯树脂的制造方法
    • US06855764B2
    • 2005-02-15
    • US10129291
    • 2000-12-07
    • Alois MaierStefan IngrischAlfred Kern
    • Alois MaierStefan IngrischAlfred Kern
    • C08G18/08C08G18/12C08G18/66C08J3/00C08K3/20C08L75/00
    • C08G18/6674C08G18/0823C08G18/12C08G18/348
    • A method for producing self-emulsifiable, aqueous polyurethane resins by a) preparing a premix of polyol component including a least one diol having a molar mass of 500 to 5,000 Dalton, at least one polyhydroxyalkane at least one anionically modifiable dihydroxyalkane-carboxylic acid and 0 to 9 parts by weight of a solvent component in desired ratios; b) reacting a polyisocyanate component the premix from stage a) to give a polyurethane preadduct, c) reacting the polyurethane preadduct from stage b) with either the premix from stage a) or with an anionically modifiable dihydroxyalkanecarboxylic acid to give a polyurethane prepolymer; d) mixing the polyurethane prepolymer from stage c) with a prepared mixture of water, a neutralizing component and an antifoam component; and thereafter or simultaneously reacting the aqueous polyurethane prepolymer from stage d) with a chain-extending component which is diluted with water.
    • 一种制备自乳化的水性聚氨酯树脂的方法,该方法是:a)制备包含摩尔质量为500-5,000道尔顿的至少一种二醇的多元醇组分的预混物,至少一种聚羟基烷烃至少一种阴离子可修饰的二羟基烷烃羧酸和0 至9重量份的所需比例的溶剂组分; b)将多异氰酸酯组分与步骤a)的预混物反应得到聚氨酯预加成物,c)使来自阶段b)的聚氨酯预加合物与来自阶段a)的预混物或与阴离子可修饰的二羟基烷烃羧酸反应得到聚氨酯预聚物; d)将来自阶段c)的聚氨酯预聚物与制备的水,中和组分和消泡剂组分的混合物混合; 然后或同时使来自阶段d)的水性聚氨酯预聚物与用水稀释的链延伸组分反应。