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    • 39. 发明授权
    • Process for the production of polyurethanes and a storable intermediate
product for carrying out this process
    • 用于生产聚氨酯的方法和用于实施该方法的可储存的中间产物
    • US4418159A
    • 1983-11-29
    • US433198
    • 1982-10-07
    • Werner RasshoferRichard KoppReiner Paul
    • Werner RasshoferRichard KoppReiner Paul
    • C08G18/00C08G18/22C08G18/24C08G18/14
    • C08G18/242
    • Optionally-foamed polyurethanes are produced by reacting polyisocyanates with organic compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight in the range from 400 to 10,000, in the presence of activators corresponding to the general formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may be the same or different and represent C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, C.sub.6 -C.sub.14 -aryl or C.sub.7 -C.sub.30 -alkaryl,X.sup.1 and X.sup.2 may be the same or different and represent halogen or a radical of the formula --OR.sup.5, --SR.sup.6 or ##STR2## with the proviso that X.sup.1 and X.sup.2 cannot both represent a halogen atom,R.sup.5, R.sup.6 and R.sup.7 may be the same or different and represent a C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, C.sub.6 -C.sub.14 -aryl or C.sub.7 -C.sub.30 -alkaryl and 1.ltoreq.x.ltoreq.4,and, optionally, in the presence of co-catalysts, blowing agents, chain-extending agents having a molecular weight of from 32 to 400 and other known auxiliaries and additives.
    • 任选发泡的聚氨酯通过使多异氰酸酯与含有至少两个异氰酸酯反应性氢原子并且分子量为400至10,000的有机化合物在对应于通式的活化剂的存在下反应来制备,其中R1, R 2,R 3和R 4可以相同或不同,表示C 1 -C 20烷基,C 5 -C 7 - 环烷基,C 6 -C 14 - 芳基或C 7 -C 30 - 烷芳基,X 1和X 2可以相同或不同,表示卤素或 式 - OR5,-SR6或的基团,条件是X1和X2不能都表示卤素原子,R5,R6和R7可以相同或不同,表示C1-C20烷基,C5- C7-环烷基,C6-C14 - 芳基或C7-C30-烷芳基和1个x = 4,以及任选地,在助催化剂,发泡剂,扩链剂的存在下,分子量为 从32到400和其他已知的助剂和添加剂。