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    • 6. 发明授权
    • Flexible polyurethane foams having improved load bearing characteristics
    • 柔性聚氨酯泡沫具有改善的承载特性
    • US4452924A
    • 1984-06-05
    • US491681
    • 1983-05-05
    • David A. Radovich
    • David A. Radovich
    • C08G18/10C08G18/50C08G18/14C08G18/32
    • C08G18/5045C08G18/10C08G2101/0008C08G2101/005
    • The present invention is directed to the discovery that the substitution of isocyanate coupled polyols for polyols conventionally used in the art leads to flexible polyurethane foams having significantly enhanced load bearing properties. More particularly, the present invention is directed to a process for the production of a flexible polyurethane foam having improved load bearing characteristics and to the foams so produced. The present process broadly comprises reacting an organic polyisocyanate with a coupled polyol in the presence of a blowing agent, a catalyst and a foam stabilizer. The coupled polyol consists essentially of the reaction product of an organic polyisocyanate and an organic compound having a hydroxy functionality ("functionality" as used herein is intended to mean the average number of reaction groups per molecule) of greater than 2, wherein the ratio of hydroxyl groups to isocyanate groups is greater than 1.0.
    • 本发明涉及这样的发现,即本领域常规使用的多元醇的异氰酸酯偶联多元醇的取代导致具有显着增强的承载性质的柔性聚氨酯泡沫。 更具体地说,本发明涉及生产具有改进的承载特性的柔性聚氨酯泡沫塑料的方法和如此生产的泡沫体的方法。 本发明方法广泛地包括在发泡剂,催化剂和泡沫稳定剂的存在下使有机多异氰酸酯与偶联的多元醇反应。 偶联多元醇基本上由有机多异氰酸酯和具有羟基官能团的有机化合物的反应产物组成(“本文所用的官能度”意指每个分子的平均反应基团数)大于2,其中, 羟基与异氰酸酯基的比例大于1.0。
    • 8. 发明授权
    • Flexible polyurethane foams having improved load bearing characteristics
and mixtures useful therein
    • 具有改进的承载特性的柔性聚氨酯泡沫和其中有用的混合物
    • US4569952A
    • 1986-02-11
    • US696942
    • 1985-01-31
    • David A. RadovichAlicia H. Keddie
    • David A. RadovichAlicia H. Keddie
    • C08G18/50C08G18/65C08G65/26C08G18/14C08G18/32
    • C08G18/6535C08G18/5033C08G65/2627C08G2101/0008C08G2101/0058C08G2101/0083
    • The present invention is directed to a process for the production of a flexible polyurethane foam comprising reacting an organic polyisocyanate and a polyol, in the presence of a blowing agent, a catalyst, and a foam stabilizer, the improvement wherein a foam of increased load bearing is obtained by including in the reaction mixture from about 8 to about 25 parts by weight per 100 parts by weight of said polyol of a mixture comprising(a) from 30 to 100 percent by weight of an addition product of an alkylene oxide and an aromatic diamine, said addition product having an average hydroxyl functionality of at least 2.5 and as high as 6, and having an hydroxyl number of from about 150 to about 810 and containing no free amine hydrogen, and(b) from 0 to 70 percent by weight of an alkanolamine having at least one hydroxyl group and having at least two active hydrogens, wherein the hydroxyl number of the combination of the polyol, the mixture, and any other isocyanate-reactive components, excluding water, is from 25 to 300, said process further being characterized as being conducted in the absence of a tin catalyst.
    • 本发明涉及一种生产柔性聚氨酯泡沫的方法,包括在发泡剂,催化剂和泡沫稳定剂的存在下使有机多异氰酸酯和多元醇反应,改进之处在于增加负载承载力的泡沫 通过在反应混合物中包含约8至约25重量份的每100重量份所述多元醇的混合物,所述混合物包含(a)30至100重量%的环氧烷和芳族化合物的加成产物 二胺,所述加成产物的平均羟基官能度至少为2.5,高达6,羟值为约150至约810,不含游离胺氢,和(b)0至70重量% 的具有至少一个羟基并具有至少两个活性氢的链烷醇胺,其中多元醇,混合物和任何其它异氰酸酯反应性组分的组合的羟值为 包括水,为25至300,所述方法进一步表征为在不存在锡催化剂的情况下进行。
    • 9. 发明授权
    • Flexible polyurethane foams
    • 柔性聚氨酯泡沫
    • US4546122A
    • 1985-10-08
    • US638325
    • 1984-08-06
    • David A. RadovichMichael K. Lowery
    • David A. RadovichMichael K. Lowery
    • C08G18/10C08G18/50C08G18/14C08G18/32C08G18/64
    • C08G18/5045C08G18/10C08G2101/0008C08G2101/005Y10S521/904
    • The present invention is directed to a process for the production of a flexible polyurethane foam comprising reacting(a) an organic polyisocyanate, and(b) a coupled polyol which consists essentially of the reaction product of an organic polyisocyanate and an organic compound having a hydroxy functionality of at least 2 and a primary hydroxy group content of at least 30%, the ratio of hydroxyl groups in said organic compound to isocyanate groups being greater than 1,(c) in the presence of(i) a blowing agent,(ii) a catalyst, and(iii) a foam stabilizer, said foam stabilizer being capable of producing a flexible polyurethane foam meeting the standard specifications for high resilience polyurethane foam as set forth in ASTM D-3770-79, when used in a foam formulation based on toluene diisocyanate and either (A) a polymer polyol prepared by polymerizing one or more ethylenically unsaturated monomers in a polyether polyol, or (B) a dispersion of polyurea and/or polyhydrazodicarbonamide in a hydroxyl group containing material.
    • 本发明涉及一种生产柔性聚氨酯泡沫的方法,包括使(a)有机多异氰酸酯和(b)偶联多元醇反应,所述偶联多元醇基本上由有机多异氰酸酯和具有羟基的有机化合物的反应产物组成 至少2的官能团和至少30%的伯羟基含量,所述有机化合物中的羟基与异氰酸酯基团的比例大于1,(c)在(i)发泡剂存在下,(ii )催化剂,和(iii)泡沫稳定剂,所述泡沫稳定剂能够生产符合ASTM D-3770-79中所述的高回弹性聚氨酯泡沫塑料的标准规格的柔性聚氨酯泡沫,当用于基于泡沫配方的 和(A)通过聚醚多元醇中聚合一种或多种烯键式不饱和单体制备的聚合物多元醇,或(B)聚脲和/或聚二酰氨基脲I的分散体 n是含羟基的材料。