2Kubitza,Werner,Gruber,et al.Aqueous coating composition based on specific two-component polyurethane and to a process for its production[P].US Patent:5075370,1991-12-24.
3Guo S H,Lickei D L,Morgan M J,et al.Two-component polyurethane coating formulations comprising an aqueous dispersion[P].US Patent:5973073,1999-10-26.
4Nachtkamp K,Schwindt J,Noble K,et al.Aqueous polyurethane stoving lacquers and the use thereof for the production of lacquer film and coatings[P].US Patent:4608413,1986-08-26.
5Wegner C,Findeisen K,Weider F.Process for the preparation of water-dispersible or water-soluble blocked polyisocyanates,the blocked polyisocyanates obtainable by this process and lacquer binders containing these blocked polyisocyanates as isocyanate component[P].US Patent:4284544,1981-08-18.
6Xiao H X,Yang S.Aqueous polyurethane dispersions[P].US Patent:5086110,1992-02-04.
7Jacob P B,YU P C.Two-component water borne polyurethane coating [J].Journal of Coatings Technology,65(822) 1993,45-50.
8Jacob P B.Two-component aqueous polyurethane dispersions with reduced solvent content and coatings prepared therefrom with improved gloss[P].US Patent:5194467,1993-03-16.