Production of rigid polyurethane foams
    2.
    发明授权
    Production of rigid polyurethane foams 失效
    生产刚性聚氨酯泡沫

    公开(公告)号:US5552450A

    公开(公告)日:1996-09-03

    申请号:US229255

    申请日:1994-04-18

    摘要: A process for the production of rigid polyurethane foams involves reactinga) organic and/or modified organic polyisocyanates withb) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired,c) low-molecular-weight chain extenders and/or cross-linking agents,in the presence ofd) blowing agents,e) catalysts and, if desired,f) assistants and/or additives,where the relatively high-molecular-weight compounds (b) containing at least two reactive hydrogen atoms are polyoxypropylene-polyols and/or polyoxyethylene-polyoxy-propylene-polyols containing up to 20% by weight, based on the weight of the alkylene oxide units, of pendant oxyethylene units containing secondary hydroxyl groups and having a functionality of from 3.8 to 4.1, a hydroxyl number of from 385 to 410 mg of KOH/g and a viscosity of from 1700 to 2400 mPa.multidot.s at 25.degree. C., and which can be prepared by anionic polymerization of 1,2-propylene oxide and, if desired, ethylene oxide on an initiator molecule mixture comprising sucrose, pentaerythritol and diethylene glycol.

    摘要翻译: 用于生产刚性聚氨酯泡沫的方法包括使a)有机和/或改性的有机多异氰酸酯与b)至少一种含有至少两个反应性氢原子的相对高分子量化合物反应,如果需要,c) 分子量增链剂和/或交联剂,在d)发泡剂的存在下,e)催化剂,如果需要,f)助剂和/或添加剂,其中相对高分子量的化合物(b) 含有至少两个反应性氢原子的是聚氧丙烯 - 多元醇和/或聚氧乙烯 - 聚氧丙烯 - 多元醇,其含有基于烯化氧单元重量的至多20重量%的含有仲羟基的侧面氧乙烯单元并具有 官能度为3.8至4.1,羟基数为385至410mg KOH / g,25℃时粘度为1700至2400 mPax,可通过1,2-环氧丙烷的阴离子聚合制备 如果需要, 包含蔗糖,季戊四醇和二甘醇的引发剂分子混合物上的氧化亚苯基。

    Production of flameproofed, rigid, isocyanate-based foams
    6.
    发明授权
    Production of flameproofed, rigid, isocyanate-based foams 失效
    生产防火,刚性,异氰酸酯类泡沫

    公开(公告)号:US5981612A

    公开(公告)日:1999-11-09

    申请号:US967188

    申请日:1997-10-29

    摘要: The flameproofed, rigid, isocyanate-based foams, in particular rigid polyurethane and polyisocyanurate foams, are produced by reactinga) organic and/or modified organic polyisocyanates withb) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired,c) low-molecular-weight chain extenders and/or crosslinking agents, in the presence ofd) blowing agents,e) catalysts,f) flameproofing agents, and, if desired,g) further auxiliaries and/or additives,wherein the flameproofing agent is a combination of at least one liquid flameproofing agent which is reactive toward isocyanates and at least one solid flameproofing agent.

    摘要翻译: 通过使a)有机和/或改性的有机多异氰酸酯与b)至少一种含有至少两个反应性氢的相对高分子量的化合物反应来制备防火,刚性,异氰酸酯基泡沫,特别是硬质聚氨酯和聚异氰脲酸酯泡沫 原子,如果需要,c)低分子量增链剂和/或交联剂,在d)发泡剂的存在下,e)催化剂,f)防火剂,如果需要,g)另外的助剂和 /或添加剂,其中所述防火剂是至少一种对异氰酸酯反应的液体防火剂和至少一种固体防火剂的组合。