公开(公告)号：US20070259981A1

公开(公告)日：2007-11-08

申请号：US11577459

申请日：2005-10-12

申请人： Berend Eling ,  Anja Biedermann ,  Andreas Emge ,  Peter Malotki ,  Seifert Holger

发明人： Berend Eling ,  Anja Biedermann ,  Andreas Emge ,  Peter Malotki ,  Seifert Holger

IPC分类号： C08G18/48 ,  C08J9/14

CPC分类号： C08J9/141 ,  C08G18/4804 ,  C08G18/7664 ,  C08G2101/0025 ,  C08G2101/005 ,  C08J2205/10 ,  C08J2375/04

摘要： The invention relates to a process for producing rigid polyurethane foams by reacting a) polyisocyanates with b) compounds having at least hydrogen atoms which are reactive toward isocyanate groups, in the presence of c) blowing agents, wherein the compounds having at least hydrogen atoms which are reactive toward isocyanate groups comprise bi1) at least one polyether alcohol which has been initiated by means of sucrose and/or sorbitol and has a functionality of greater than 4 and a hydroxyl number in the range from 400 to 550 mg KOH/h, bi2) at least one polyether alcohol which has been initiated by means of TDA and has a hydroxyl number in the range from 120 to 240 mg KOH/g and an aromatics content in the range from 6.5 to 15% by weight, or a polyether alcohol which has been initiated by means of TMP and has a hydroxyl number in the range from 120 to 240 mg KOH/g, and, if appropriate, bi3) at least one polyether alcohol which has been inititated by means of a bifunctional or trifunctional alcohol and has a hydroxyl number in the range from 300 to 600 mg KOH/g.

摘要翻译： 本发明涉及通过使a）多异氰酸酯与b）至少具有对异氰酸酯基团具有反应性的氢原子的化合物在c）发泡剂的存在下反应来生产硬质聚氨酯泡沫的方法，其中至少具有氢原子的化合物为 对于异氰酸酯基反应的组分包括bi1）至少一种已经通过蔗糖和/或山梨糖醇起始并且具有大于4的官能度和400-550mg KOH / h的羟值的聚醚醇，bi2 ）至少一种聚醚醇，其通过TDA引发并具有120至240mg KOH / g的羟值，并且芳烃含量在6.5至15重量％的范围内，或聚醚醇，其中 已经通过TMP引发，羟基数在120至240mg KOH / g的范围内，如果合适的话，bi3）至少一种已经通过双功能或三点激发的聚醚醇 并且具有在300-600mg KOH / g范围内的羟值。