公开(公告)号：US06228899B1

公开(公告)日：2001-05-08

申请号：US09252260

申请日：1999-02-18

申请人： Monika Wetterling ,  Marita Schuster ,  Bernd Güttes ,  Simone Kuhn

发明人： Monika Wetterling ,  Marita Schuster ,  Bernd Güttes ,  Simone Kuhn

IPC分类号： C08G1814

CPC分类号： B60N2/70 ,  C08G18/4072 ,  C08G18/4883 ,  C08G18/6564 ,  C08G65/2609 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0083

摘要： Flexible foams based on polyisocyanate polyaddition products are produced by reacting polyisocyanates with compounds which are reactive toward isocyanates in the presence of catalysts, blowing agents and, if desired, flame retardants, auxiliaries and/or additives, wherein polyether polyalcohols (c) which are obtainable by addition of alkylene oxides onto substances containing active hydrogens are used as substances which are reactive toward isocyanates, where, in a first stage, at least one substance (a) containing 2 or 3 active hydrogens is reacted with at least one alkylene oxide in the presence or absence of catalysts, subsequently at least one substance (b) which contains at least four active hydrogens and, if desired, further catalyst is added to the reaction mixture from the first stage and this mixture is then reacted in a second stage with at least one alkylene oxide.

摘要翻译： 基于多异氰酸酯加成产物的柔性泡沫体是通过使多异氰酸酯与在催化剂，发泡剂和（如果需要的话）阻燃剂，助剂和/或添加剂的存在下对异氰酸酯反应的化合物反应制备的，其中可得到的聚醚多元醇（c） 通过在含有活性氢的物质上添加环氧烷作为对异氰酸酯具有反应性的物质使用，其中在第一阶段中，至少一种含有2或3个活性氢的物质（a）与至少一种烯化氧在 存在或不存在催化剂，随后将至少一种含有至少四个活性氢的物质（b），如果需要，从第一阶段将另外的催化剂加入到反应混合物中，然后将该混合物在第二阶段与 至少一种环氧烷。