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    • 1. 发明申请
    • Method of enhancing the cure time of polyurethane based systems
    • 提高聚氨酯系统固化时间的方法
    • US20070270564A1
    • 2007-11-22
    • US11800995
    • 2007-05-08
    • Robert B. TurnerThomas Kurth
    • Robert B. TurnerThomas Kurth
    • C08G18/00
    • C08G18/1825C08G2101/00C08G2190/00
    • Polyurethane curable systems that contain an aminated glycerol as a catalyst to enhance the cure rate of the systems. The systems are based on polyoxyalkylene polyols that can be either polyether or polyester polyols. In addition, the polyols can be those that are provided by natural oils, such as soybean, corn oils, and the like. The polyols are typically dihydroxy functional, but can be tri- or quadra-functional or more. The systems are comprised of the reaction of such polyols with organic isocyanates, including the use of chain extenders from diols, or a mixture of triols and diols, such that the overall functionality of the mixture is generally less than 2.3. The organic isocyanates are also at least di-functional and can be tri- or greater functional, with regard to the isocyanate groups used on such molecules. The polyurethane systems can be, for example, elastomers, sealants, adhesives, or foamable systems.
    • 含有胺化甘油作为催化剂以提高系统固化速率的聚氨酯固化体系。 该系统基于可以是聚醚或聚酯多元醇的聚氧化烯多元醇。 此外,多元醇可以是由天然油如大豆,玉米油等提供的多元醇。 多元醇通常是二羟基官能团,但可以是三或四官能或更多。 该系统由这种多元醇与有机异氰酸酯的反应组成,包括使用来自二醇的增链剂,或三醇和二醇的混合物,使得混合物的总体官能度通常小于2.3。 关于在这种分子上使用的异氰酸酯基团,有机异氰酸酯也至少是二官能的并且可以是三或更多个官能团。 聚氨酯体系可以是例如弹性体,密封剂,粘合剂或可发泡体系。