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    • 3. 发明授权
    • Use of polyhydroxyalkyl monoureas for polyurethane foams, dispersions of
the polyhydroxyalkyl monoureas in polyols and new tris-hydroxyalkyl
monoureas
    • 聚羟基烷基单脲在聚氨酯泡沫中的应用,多羟基烷基单脲在多元醇中的分散和新的三羟基烷基单脲
    • US4546121A
    • 1985-10-08
    • US645204
    • 1984-08-29
    • Peter HaasGeza AvarHartwig Grammes
    • Peter HaasGeza AvarHartwig Grammes
    • C07C275/10C08G18/38C08G18/14
    • C08G18/3829C07C275/10Y10S516/07
    • This invention relates to the use of mono- to tetrahydroxyalkyl monoureas corresponding to the following general formula ##STR1## in which A represents a C.sub.2 -C.sub.6 -alkylene group optionally containing OH-groups,n=0, 1 or 2.n'=1 or 2 andn+n'=1, 2, 3 or 4, preferably 2-4 and, more preferably, 3,as reactive flameproofing agents in quantities of from 3 to 100 parts by weight and preferably in quantities of from 11.5 to 50 parts by weight, based on 100 parts by weight of relatively high molecular weight compounds having molecular weights of from 400 to 10,000, preferably relatively high molecular weight polyols, for the production of flameproofed polyurethane foams, and preferably integral skin foams or semirigid to rigid foams. The invention also relates to dispersions or suspensions of mono- to tetrapolyhydroxyalkyl monoureas corresponding to the above formula in relatively high molecular weight compounds containing terminal hydroxyl, primary or secondary amino, carboxyl or hydrazide groups. Preferred are relatively high molecular weight polyols, having a molecular weight in the range from 400 to 10,000. The content of polyhydroxyalkyl monoureas amounts to between 3 and 50% by weight. Finally, the invention relates to tris-hydroxyalkyl monoureas corresponding to the above formula in which n=2, n'=1 and the sum of n+n'=3.
    • 本发明涉及对应于以下通式“IMAGE”的单 - 四羟基烷基单脲的用途,其中A表示任选含有OH-基团,n = 0,1或2的C 2 -C 6亚烷基。n'= 1 或2和n + n'= 1,2,3或4,优选2-4和更优选3作为反应性防火剂,其量为3至100重量份,优选为11.5至50 重量份,基于100重量份分子量为400至10,000的较高分子量化合物,优选相对高分子量的多元醇,用于生产防火聚氨酯泡沫,并且优选为整体皮肤泡沫或半刚性至刚性泡沫 。 本发明还涉及对应于上述式的单 - 四羟基烷基单脲的分散体或悬浮液,其含有末端羟基,伯氨基或仲氨基,羧基或酰肼基团的较高分子量化合物。 优选分子量在400至10,000的较高分子量多元醇。 聚羟基烷基单脲的含量为3至50重量%。 最后,本发明涉及对应于上式的三羟基烷基单脲,其中n = 2,n'= 1,n + n'= 3的和。