Polyisocyanate-modified polycarboxylic acids
    9.
    发明授权
    Polyisocyanate-modified polycarboxylic acids 有权
    多异氰酸酯改性多元羧酸

    公开(公告)号:US07329717B2

    公开(公告)日:2008-02-12

    申请号:US10873081

    申请日:2004-06-21

    IPC分类号: C08G18/70

    摘要: A process for preparing polyisocyanate-modified polycarboxylic acids by conversion of anhydride-group-free polycarboxylic acids with isocyanate-functional compounds. The process includes reacting A) an anhydride-group-free polycarboxylic-acid component with B) an isocyanate-functional component having an (average) isocyanate functionality of at least 1.8, at an equivalent ratio of carboxylic acid groups to isocyanate groups of from 1.2:1 to 120:1. The polyisocyanate-modified polycarboxylic acids are solid below 40° C. and liquid above 130° C., and have an average carboxylic acid functionality of at least 1.8, a content of free carboxylic acid groups of from 4.0 wt. % to 80.0 wt. % and a content of amide groups of from 0.4 wt. % to 32.5 wt. %.

    摘要翻译: 一种通过使用无酸酐基的多元羧酸与异氰酸酯官能化合物的转化制备多异氰酸酯改性的多元羧酸的方法。 该方法包括使A)无酸酐基的多元羧酸组分与B)具有至少1.8的(平均)异氰酸酯官能度的异氰酸酯官能组分以羧酸基团与异氰酸酯基团的当量比为1.2 :1〜120:1。 多异氰酸酯改性的多元羧酸是固体低于40℃,液体高于130℃,平均羧酸官能度至少为1.8,游离羧酸基团的含量为4.0重量%。 %至80.0wt。 %和酰胺基团的含量为0.4重量% %至32.5重量% %。