Process for preparing a free rise or slabstock flexible polyurethane foam
    10.
    发明授权
    Process for preparing a free rise or slabstock flexible polyurethane foam 有权
    制备自由上升或块状软质聚氨酯泡沫的方法

    公开(公告)号:US06774153B2

    公开(公告)日:2004-08-10

    申请号:US10191371

    申请日:2002-07-01

    IPC分类号: C08G1848

    摘要: Process for making free rise or slabstock flexible polyurethane foams with high resilience using diphenylmethane diisocyanate and a polyol composition comprising: (a) a polyoxyethylene-polyoxypropylene-polyol, having an average nominal hydroxyl functionality of 2-8, an average equivalent weight of 1000-4000 and containing 10-25% by weight of oxyethylene groups; (b) 3 to 8 parts by weight of water as the sole blowing agent or optionally together with CO2 as the sole blowing agents; and (c) 2 to 20, preferably 2 to 10 parts by weight of a polyether polyol having an average nominal hydroxyl functionality of 2-6, an average equivalent weight of 200-600 and containing at least 60% by weight of oxyethylene groups; and optionally (d) up to 30 and preferably 2-25 parts by weight of particulate material which is dispersed in said polyol composition; the amounts of (b)(ii) to (b)(iv) being calculated per 100 parts by weight of (b)(i); and optionally (e) auxiliaries and additives.

    摘要翻译: 使用二苯基甲烷二异氰酸酯和多元醇组合物制备具有高回弹性的自由起泡或块状软质聚氨酯泡沫的方法,所述多元醇组合物包含:(a)平均标称羟基官能度为2-8的聚氧乙烯 - 聚氧丙烯多元醇,平均当量为1000- 4000,含有10-25重量%的氧化乙烯基团; (b)作为唯一发泡剂的3至8重量份的水或任选地与作为唯一发泡剂的CO 2一起; 和(c)2至20,优选2至10重量份的平均标称羟基官能度为2-6的聚醚多元醇,平均当量为200-600,并含有至少60重量%的氧化乙烯基团; 和任选地(d)最多30个,优选2-25重量份的分散在所述多元醇组合物中的颗粒材料; (b)(ii)至(b)(iv)的量按(b)(i)每100重量份计算; 和任选的(e)助剂和添加剂。