Rigid, closed-cell, flame-resistant polyurethane foams
    1.
    发明授权
    Rigid, closed-cell, flame-resistant polyurethane foams 失效
    刚性,闭孔,阻燃聚氨酯泡沫

    公开(公告)号:US4575520A

    公开(公告)日:1986-03-11

    申请号:US691813

    申请日:1985-01-16

    Abstract: Rigid, closed-cell, flame-resistant polyurethane foams are produced by reacting a polyol mixture with a polyphenyl-polymethylene-polyisocyanate in the present of a catalyst system. The polyol mixture includes: (1) from 25 to 43 wt % flame proofing agent, (2) from 5 to 50 wt % sucrose polyether having an OH number of from 350 to 550, (3) from 0 to 30 wt % amine initiated polyethers having an OH number of from 400 to 800, (4) from 0 to 30 wt % other polyether or polyester having an OH number of from 150 to 600, (5) from 4 to 13 wt % glycerol, (6) from 0.5 to 3 wt % silicone stabilizer and (7) from 0.05 to 1.5 wt % water. The catalyst system is made up of at least two components selected from tertiary amines, alkali metal carboxylates, quaternary ammonium carboxylates and organic tin compounds. The reactants are employed in quantities such that the NCO to OH equivalent ratio is from 1.07 to 1.45 (the isocyanate-index is from 1.07 to 1.45). The foams of the present invention are particularly useful in the production of roof insulating boards, insulation of containers, pipelines, etc. and for sealing and insulating roofs and walls.

    Abstract translation: 刚性,闭孔,阻燃的聚氨酯泡沫是通过多元醇混合物与催化剂体系中的多苯基 - 聚亚甲基 - 多异氰酸酯反应制备的。 多元醇混合物包括:(1)25至43重量%的防火剂,(2)5至50重量%的OH值为350至550的蔗糖聚醚,(3)0至30重量%的胺引发 OH值为400〜800的聚醚,(4)0〜30重量%的OH值为150〜600的其他聚醚或聚酯,(5)4〜13重量%的甘油,(6)0.5 至3重量%的硅氧烷稳定剂和(7)0.05至1.5重量%的水。 催化剂体系由选自叔胺,碱金属羧酸盐,季铵羧酸盐和有机锡化合物中的至少两种组分组成。 反应物的使用量使得NCO与OH当量比为1.07至1.45(异氰酸酯指数为1.07至1.45)。 本发明的泡沫在屋顶绝热板的制造,容器绝缘,管道等以及用于密封和绝热屋顶和墙壁方面特别有用。

    Polyol composition and a process for the preparation of flame-resistant
polyurethane foams therefrom
    2.
    发明授权
    Polyol composition and a process for the preparation of flame-resistant polyurethane foams therefrom 失效
    多元醇组合物及其制备耐火聚氨酯泡沫的方法

    公开(公告)号:US4767795A

    公开(公告)日:1988-08-30

    申请号:US063185

    申请日:1987-06-17

    CPC classification number: C08G18/6677 C08G18/5033 C08K5/0066 C08G2101/0025

    Abstract: Flame resistant polyurethane foams are made by reacting a polyisocyanate with a specific polyol composition. This polyol composition is made up of (a) at least 10 wt. % of a polyether formed by the addition of alkylene oxide(s) to 2,3- and/or 3,4-tolylenediamine having an OH number of from 400 to 520, (b) at least 20-50 wt. % flame retardant containing phosphorus and/or halogen, (c) 5-10 wt. % chain lengthening or cross-linking agent, (d) surface active agents, (e) water and (f) 0-30 wt. % polyhydroxyl compound(s) other than (a) having a molecular weight of from 300 to 10,000.

    Abstract translation: 耐火聚氨酯泡沫是通过使多异氰酸酯与特定的多元醇组合物反应制得的。 该多元醇组合物由(a)至少10重量% 通过将氧化烯加成到具有400至520的OH数的2,3-和/或3,4-甲苯二胺形成的聚醚的百分比,(b)至少20-50重量% 含磷和/或卤素的%阻燃剂,(c)5-10重量% %链延长或交联剂,(d)表面活性剂,(e)水和(f)0-30重量% %以外的(a)分子量为300〜10,000的多羟基化合物。

    Process for the production of foams based on aromatic isocyanates using
MG(OH).sub.2 and the foams produced thereby
    4.
    发明授权
    Process for the production of foams based on aromatic isocyanates using MG(OH).sub.2 and the foams produced thereby 失效
    基于使用MG(OH)2的芳族异氰酸酯和由此制备的泡沫来生产泡沫体的方法

    公开(公告)号:US4931481A

    公开(公告)日:1990-06-05

    申请号:US286542

    申请日:1988-12-19

    CPC classification number: C08K3/22 Y10S521/906

    Abstract: Combustion modified foams are produced by reacting an organic aromatic polyisocyanate with an isocyanate reactive compound in the presence of a blowing agent and Mg(OH).sub.2. The Mg(OH).sub.2 is generally used in a quantity of from 4-100 parts by weight based on the foam taken as 100 parts by weight. Mg(OH).sub.2 having a particle size of from 0.5-50 .mu.m is preferably used. The foams produced by the process are particularly useful in construction applications.

    Abstract translation: 通过在发泡剂和Mg(OH)2的存在下使有机芳族多异氰酸酯与异氰酸酯反应性化合物反应来制备燃烧改性泡沫。 基于100重量份的泡沫,Mg(OH)2的用量通常为4〜100重量份。 优选使用粒径为0.5〜50μm的Mg(OH)2。 由该方法生产的泡沫在施工应用中特别有用。

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