The present invention relates to a composition for preparing flexible foams and the application thereof. The composition comprises the following components: a. an isocyanate mixture comprising: a1) an aliphatic and/or alicyclic isocyanate monomer, and a2) an aliphatic and/or alicyclic isocyanate trimer, wherein the mass ratio of said monomer to said trimer is in a range of 3:1-200:1; b. a polymer polyol mixture comprising: b1) a first polyether polyol having a number average molecular weight of not less than 3000 g/mol with an ethylene oxide content of 5-20 wt.%, b2) a second polyether polyol having a number average molecular weight of not less than 3000 g/mol with an ethylene oxide content of more than 60 wt.%, wherein the mass ratio of said first polyether polyol to said second polyether polyol is in a range of 4:1-100:1; c. an isocyanate-reactive group comprising compound having a number average molecular weight of 32-400 g/mol; d. a catalyst; e. a foaming agent; and f. optionally, an additive; wherein said composition has an isocyanate index of 70-120.
本发明涉及一种用于制备软质泡沫的组合物及其应用。a.
异氰酸酯混合物,包括:a1) 脂肪族和/或脂环族
异氰酸酯单体,和 a2) 脂肪族和/或脂环族
异氰酸酯三聚体,其中所述单体与所述三聚体的质量比在 3:1-200:1 之间; b. 聚合物多元醇混合物,包括:b1) 第一种聚醚多元醇,其平均分子量不小于 3000 克/摩尔,
环氧乙烷含量为 5-20 wt.b2) 第二聚醚多元醇,其平均分子量不小于 3000 克/摩尔,
环氧乙烷含量大于 60 wt.%,其中所述第一聚醚多元醇与所述第二聚醚多元醇的质量比范围为 4:1-100:1; c.平均分子量为 32-400 克/摩尔的
异氰酸酯反应基化合物; d. 催化剂; e. 发泡剂;以及 f. 可选的添加剂;其中所述组合物的
异氰酸酯指数为 70-120。