申请人:Construction Research & Technology GmbH
公开号:US20040198900A1
公开(公告)日:2004-10-07
A polyurethane sealant is the reaction product of a hydroxy-terminated toluenediisocyanate/polyoxyalkylene polyol prepolymer component, an isocyanate-terminated toluenediisocyanate/polyoxyalkylene polyol activator component, and at least one of a diphenylmethane diisocyanate prepolymer component and a diphenylmethane diisocyanate monomer component. A method for making a sealant including providing a base component containing a hydroxy-terminated toluenediisocyanate/polyoxyalkylene polyol prepolymer, an activator component containing an isocyanate-terminated toluenediisocyanate/polyoxyalkylene polyol, and a modifier component containing at least one of a diphenylmethane diisocyanate prepolymer and a diphenylmethane diisocyanate monomer, and combining the base component, activator component, and modifier component to form a polyurethane reaction product.
聚氨酯密封胶是羟基端苯二异氰酸酯/聚氧烷基聚醚预聚物组分、异氰酸酯端苯二异氰酸酯/聚氧烷基聚醚活化剂组分,以及二苯甲酮二异氰酸酯预聚物组分和二苯甲酮二异氰酸酯单体组分中的至少一种的反应产物。一种制备密封胶的方法包括提供一个基础组分,其中包含羟基端苯二异氰酸酯/聚氧烷基聚醚预聚物,一个活化剂组分,其中包含异氰酸酯端苯二异氰酸酯/聚氧烷基聚醚,以及一个修饰剂组分,其中至少包含二苯甲酮二异氰酸酯预聚物和二苯甲酮二异氰酸酯单体,然后将基础组分、活化剂组分和修饰剂组分结合起来形成聚氨酯反应产物。