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    • 6. 发明公开
    • POLYURETHANE MATS
    • 聚氨酯垫
    • EP3189090A1
    • 2017-07-12
    • EP15766291.7
    • 2015-09-02
    • Dow Global Technologies LLCDow Italia Divisione Commerciale Srl
    • COCCONI, CarloLISTA, GiuseppeSCUSSOLIN, Silvia
    • C08G18/48C08G18/66C08G18/32C08G18/76
    • A polyurethane elastomer, e.g., for use in polyurethane mats, includes the reaction product of an isocyanate component that includes at least one isocyanate and an isocyanate-reactive component that includes (a) a first polyol component including from 40 wt % to 90 wt % of at least one polyether polyol having an average hydroxyl functionality that is greater than 2.5 and a number average molecular weight from 300 g/mol to 1,500 g/mol; (b) a second polyol component including from 2 wt % to 20 wt % of at least one ethylene oxide capped polyoxypropylene-polyoxyethylene polyol having an average hydroxyl functionality greater than 1.5 and less than 4.0, a number average molecular weight from 4,000 g/mol to 6,000 g/mol, and from 60% to 85% of a primary hydroxyl group content; and (c) a third polyol component including from 1 wt % to 20 wt % of at least one polyoxypropylene polyol having an average hydroxyl functionality greater than 1.5 and less than 4.0 and a number average molecular weight from 300 g/mol to 1,500 g/mol.
    • 例如用于聚氨酯垫的聚氨酯弹性体包括包含至少一种异氰酸酯和异氰酸酯反应性组分的异氰酸酯组分的反应产物,所述异氰酸酯组分包含(a)第一多元醇组分,其包含40重量%至90重量% 的至少一种具有大于2.5的平均羟基官能度和300g / mol至1,500g / mol的数均分子量的聚醚多元醇; (b)第二多元醇组分,其包含2重量%至20重量%的至少一种平均羟基官能度大于1.5且小于4.0的环氧乙烷封端的聚氧化丙烯 - 聚氧化乙烯多元醇,数均分子量为4,000g / mol 至6000克/摩尔,和伯羟基含量的60%至85% 和(c)第三多元醇组分,其包含1重量%至20重量%的平均羟基官能度大于1.5且小于4.0且数均分子量为300g / mol至1,500g / mol的至少一种聚氧丙烯多元醇, 摩尔。