Production of polyurethane foams
    1.
    发明授权
    Production of polyurethane foams 失效
    生产聚氨酯泡沫

    公开(公告)号:US6087410A

    公开(公告)日:2000-07-11

    申请号:US154382

    申请日:1998-09-16

    IPC分类号: C08G18/40 C08G18/65 C08G18/48

    摘要: Polyurethane foams are produced by reactinga) organic and/or modified organic diisocyanates and/or polyisocyanates withb) at least one relatively high molecular weight compound containing at least two reactive hydrogen atoms,c) at least one compound containing from three to eight, preferably from three to six, reactive hydrogen atoms andd) low molecular weight chain extenders and/or crosslinkers containing at least two reactive hydrogen atomsin the presence ofe) blowing agentsf) catalysts and, if desired,g) further auxiliaries and additives,wherein (c) are ethylene oxide-rich adducts having an ethylene oxide content of more than 50% by weight and an OH number of from 200 to 800 mg KOH/g and (d) are polyfunctional chain extenders and/or crosslinkers having an OH number of more than 700 mg KOH/g.The polyurethane foam produced by this process can be used as upholstery material.

    摘要翻译: 聚氨酯泡沫是通过使a)有机和/或改性的有机二异氰酸酯和/或多异氰酸酯与b)至少一种含有至少两个反应性氢原子的相对高分子量的化合物反应来制备的,c)至少一种含有3-8个 优选3至6个反应性氢原子和d)在e)发泡剂存在下含有至少两个反应性氢原子的低分子量增链剂和/或交联剂f)催化剂,如果需要,g)其它助剂和添加剂 ,其中(c)是具有大于50重量%的环氧乙烷含量和200-800mg KOH / g的OH值的环氧乙烷富集的加合物,和(d)是具有多官能的增链剂和/或交联剂, OH数超过700 mg KOH / g。 通过该方法生产的聚氨酯泡沫可用作装饰材料。