HYBRID POLYESTER-POLYETHER POLYOLS FOR IMPROVED DEMOLD EXPANSION IN POLYURETHANE RIGID FOAMS
    1.
    发明申请
    HYBRID POLYESTER-POLYETHER POLYOLS FOR IMPROVED DEMOLD EXPANSION IN POLYURETHANE RIGID FOAMS 审中-公开
    聚氨酯聚醚多元醇改性聚氨酯膨胀聚氨酯泡沫塑料

    公开(公告)号:US20140213677A1

    公开(公告)日:2014-07-31

    申请号:US14346887

    申请日:2012-09-10

    IPC分类号: C08G18/34 C08G18/08

    摘要: The present invention discloses polyester-polyether polyols suitable for blending with other polyols or other materials mutually compatible with the polyester polyols to achieve polyurethane and polyisocyanurate products. In particular the present invention discloses polyester-polyether polyols produced by the reaction of: 1) phthalic anhydride with an alcohol having a nominal functionality of 3 and a molecular weight of 90 to 500 under conditions to form a phthalic anhydride half-ester; and 2) alkoxylating the half-ester formed in step 1 to form a polyester-polyether polyol having a hydroxyl number of from 200 to 350; with the proviso when the alcohol is a polyether polyol, the polyether polyol contains at least 70 weight percent of polyoxypropylene.

    摘要翻译: 本发明公开了适用于与其它多元醇或其它与聚酯多元醇相容的材料共混以实现聚氨酯和聚异氰尿酸酯产品的聚酯多元醇多元醇。 特别地,本发明公开了通过以下反应制备的聚酯 - 聚醚多元醇:1)邻苯二甲酸酐与名义官能度为3,分子量为90〜500的醇,形成邻苯二甲酸酐半酯; 和2)将在步骤1中形成的半酯烷氧基化以形成羟基数为200至350的聚酯 - 聚醚多元醇; 条件是醇是聚醚多元醇时,聚醚多元醇含有至少70重量%的聚氧丙烯。