Polyurethane adhesive mixtures
    1.
    发明授权
    Polyurethane adhesive mixtures 失效
    聚氨酯胶粘剂混合物

    公开(公告)号:US4731410A

    公开(公告)日:1988-03-15

    申请号:US881244

    申请日:1986-07-02

    摘要: Polyurethane adhesive mixtures or polyurethane adhesive solutions contain(a) a polyurethane elastomer which advantageously has a mean molecular weight of not less than 30,000 and which is prepared by reacting(i) one or more essentially linear polyesterpolyols and(ii) one or more chain extenders with(iii) a mixture of 4,4'- and 2,4'-diphenylmethane diisocyanate isomers in a weight ratio of from 60:40 to 40:60 and(b) if appropriate, additives and/or organic solvents.

    摘要翻译: 聚氨酯粘合剂混合物或聚氨酯粘合剂溶液包含(a)有利地具有不小于30,000的平均分子量的聚氨酯弹性体,其通过(i)一种或多种基本上线性的聚酯多元醇和(ii)一种或多种扩链剂 与(iii)重量比为60:40至40:60的4,4'-和2,4'-二苯基甲烷二异氰酸酯异构体的混合物和(b)如果合适的话,添加剂和/或有机溶剂。

    Aqueous polyurethane adhesive dispersions
    2.
    发明授权
    Aqueous polyurethane adhesive dispersions 失效
    水性聚氨酯胶粘剂分散体

    公开(公告)号:US4861826A

    公开(公告)日:1989-08-29

    申请号:US133378

    申请日:1987-12-15

    摘要: Aqueous dispersions of polyurethanes consisting of(a) organic polyisocyanates,(b) polyesterpolyols having a molecular weight of from 500 to 5,000,(c) organic hydroxy compounds having a molecular weight of from 62 to 400 and two terminal groups which are reactive to isocyanate groups, as chain extenders, and(d) compounds containing ionic groups or groups which can be converted to ionic groups and one or more isocyanate groups or a hydroxyl or amino group which is reactive to isocyanate groups,which contain from 0.05 to 2 meq of ionic groups incorporated into the polyurethane via (d) per g of polyurethane are particularly suitable for adhesives when the chain extenders (c) are incorporated in an amount of from 1.5 to 8 moles per mole of polyols, and a minor amount of (a) can be replaced with monoisocyanates, and a minor amount of (b) with polyetherpolyols.

    摘要翻译: 由(a)有机多异氰酸酯,(b)分子量为500〜5000的聚酯多元醇组成的聚氨酯的水分散体,(c)分子量为62〜400的有机羟基化合物和与异氰酸酯反应的两个端基 基团,作为扩链剂,和(d)可以转化为离子基团和一个或多个异氰酸酯基团或与异氰酸酯基团反应的羟基或氨基的离子基团或基团的化合物,其含有0.05至2meq 通过(d)每g聚氨酯掺入聚氨酯中的离子基团特别适用于粘合剂,当增链剂(c)以每摩尔多元醇1.5至8摩尔的量加入时,少量的(a) 可以用单异氰酸酯代替,和少量的(b)与聚醚多元醇。