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发明授权
US5300534A Production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, and blowing agent-containing emulsions for this purpose 失效
生产塑料泡沫，优选含有氨基甲酸酯基团或氨基甲酸酯和异氰脲酸酯基团的刚性泡沫，以及用于该目的的含发泡剂的乳液

Production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, and blowing agent-containing emulsions for this purpose
摘要：
A process for the production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, by reactinga) an organic and/or modified organic polyisocyanate withb) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired,c) a low-molecular-weight chain extender and/or cross-linking agent,in the presence ofd) a blowing agent,e) a catalyst and, if desired,f) assistants and/or additives,in which the blowing agent (d) used is at least one vinylfluoroalkane of the formula CH.sub.2 .dbd.CH--C.sub.n F.sub.2n+1 in which n is an integer from 1 to 6, (di), or a mixture of at least one such vinylfluoroalkane (di) and at least one further physical and/or chemical blowing agent (dii) which is different from (di), blowing agent-containing emulsions which contain at least one vinylfluoroalkane and at least one starting component (a), (b), (c) or (b) and (c) and said plastic foams containing at least one vinylfluoroalkane as insulating gas.
摘要（中）：

通过使a）有机和/或改性的有机多异氰酸酯与b）至少一种相对高分子量的化合物（其包含至少两种以上的化合物）反应，生产塑料泡沫，优选含有氨基甲酸酯基或氨基甲酸酯和异氰脲酸酯基团的刚性泡沫的方法 反应性氢原子，如果需要，c）低分子量增链剂和/或交联剂，在d）发泡剂存在下，e）催化剂，如果需要，f）助剂和 其中使用的发泡剂（d）是至少一种式CH 2 = CH-C n F 2n + 1的乙烯基氟烷烃，其中n是1至6的整数，（di），或至少一种 这种乙烯基氟烷烃（二）和至少一种不同于（二）的物理和/或化学发泡剂（dii），含有至少一种乙烯基氟烷烃和至少一种起始组分（a）的发泡剂的乳液，（ b），（c）或（b）和（c）和所述含有至少一种乙烯基芴的塑料泡沫 oralkalk作为绝缘气体。

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