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    • 3. 发明授权
    • Process for the production of multicoat protective and/or decorative
coatings on substrate surfaces
    • 在基材表面上生产多层保护和/或装饰涂层的方法
    • US5370910A
    • 1994-12-06
    • US689270
    • 1992-02-26
    • Hans-Dieter HilleStefan C. WieditzArnold Dobbelstein, deceasedHorst Muller
    • Hans-Dieter HilleStefan C. WieditzArnold Dobbelstein, deceasedHorst Muller
    • B05D7/16C08G18/08C08G18/12C08G18/40C08G18/66C09D175/04B05D1/36C08G18/34C08G18/42
    • B05D7/532C08G18/0819C08G18/12C08G18/4018C08G18/6625C09D175/04
    • The invention relates to a basecoat/clearcoat process in which the basecoat composition used contains as a film former a polyurethane resin which can be prepared by preparing an intermediate from(A) a mixture obtained from 10 to 90 mol % of linear polyether diols and 90 to 10 mol % of polyester diols,(B) diisocyanates,(C) compounds which contain two groups reactive toward isocyanate groups, at least some of these compounds having at least one group capable of forming anions, and the free isocyanate groups of the said intermediate are then reacted with(D) polyols containing at least three hydroxyl groups, and the reaction product obtained in this manner is transferred into an aqueous base, whereina) the polyester diol is prepared from diols and an acid component which consists of 60 to 100 % by weight of aliphatic dicarboxylic acids of more than 18 carbon atoms and of 40 to 0 % by weight of aliphatic dicarboxylic acids of 2 to 18 carbon atoms,b) the equivalent ratio of the NCO groups to the total of the OH groups of (A) and the reactive groups of (C) is 2:1 to 1.05:1 andc) the equivalent of the OH groups of the component (D) to the NCO groups of the intermediate is 0.5:1 to 4:1.
    • PCT No.PCT / ED89 / 00868 Sec。 371日期:1992年2月26日 102(e)日期1992年2月26日PCT提交1989年7月24日PCT公布。 公开号WO90 / 01041 日本1990年2月8日。本发明涉及一种底漆/透明涂料方法,其中所用的底漆组合物含有作为成膜剂的聚氨酯树脂,其可以通过从(A)得到的混合物制备中间体,所述混合物从10至90mol 线性聚醚二醇的百分数和聚酯二醇的90〜10摩尔%,(B)二异氰酸酯,(C)含有两个对异氰酸酯基反应的基团的化合物,至少一些具有至少一个能够形成阴离子的化合物,以及 然后将所述中间体的游离异氰酸酯基与(D)含有至少三个羟基的多元醇反应,将以这种方式获得的反应产物转移到碱的水溶液中,其中a)聚酯二醇由二醇和 酸性组分,其由60至100重量%的多于18个碳原子的脂族二羧酸和40至0重量%的2至18个碳原子的脂族二羧酸组成,b)当量ra NCO基团与(A)的OH基团的总数和(C)的反应性基团的摩尔比为2:1至1.05:1,c)组分(D)的OH基相当于NCO 中间体的基团为0.5:1至4:1。