Preparation of polyisocyanates containing biuret groups
    46.
    发明授权
    Preparation of polyisocyanates containing biuret groups 失效
    含有缩二脲基团的多异氰酸酯的制备

    公开(公告)号:US4192936A

    公开(公告)日:1980-03-11

    申请号:US8727

    申请日:1979-02-02

    摘要: This invention relates to an improved process for the preparation of polyisocyanate mixtures containing biuret groups by the reaction of organic diisocyanates with compounds which react with isocyanate groups to form biuret groups, to the polyisocyanate mixtures obtained by this process and to the use thereof for the preparation of polyurethane resins by the isocyanate polyaddition process.

    摘要翻译: 本发明涉及通过有机二异氰酸酯与异氰酸酯基团反应形成缩二脲基团的化合物反应制备含有缩二脲基团的多异氰酸酯混合物的改进方法,涉及通过该方法得到的多异氰酸酯混合物及其制备方法 的聚氨酯树脂通过异氰酸酯加聚方法。

    Pulverulent coating substance
    49.
    发明授权
    Pulverulent coating substance 失效
    粉末涂料物质

    公开(公告)号:US4150211A

    公开(公告)日:1979-04-17

    申请号:US878365

    申请日:1978-02-16

    摘要: The present invention relates to mixtures which are suitable for use as lacquer powders or as binders for lacquer powders and which are solid and capable of being pulverized at temperatures below about 40.degree. C. and liquid at temperatures above about 150.degree. C., which mixtures comprise(a) an isocyanate component having masked isocyanate groups;(b) a polyhydroxyl component; and, optionally(c) the conventional auxiliary agents and additives;Characterized in that the substance used as component (a) is a polyisocyanate having isocyanurate groups and isocyanate groups which are masked with lactams. The present invention also relates to the use of these mixtures as lacquer powders or as binders for lacquer powders for coating any heat-resistant substrate by the conventional coating methods employed for lacquer powders.

    摘要翻译: 本发明涉及适用于漆粉或作为漆粉的粘合剂的混合物,它们是固体并且能够在低于约40℃的温度下被粉碎,并且在高于约150℃的温度下是液体,这些混合物 包括(A)具有掩蔽的异氰酸酯基团的异氰酸酯组分; (B)聚羟基组分; (C)常规辅助剂和添加剂; 其特征在于用作组分(A)的物质是具有异氰酸酯基团的聚异氰酸酯和与LACTAMS一起被掩蔽的异氰酸酯基团。 本发明还涉及这些混合物作为漆粉末或作为用于通过用于漆粉末的常规涂布方法涂覆任何耐热基材的漆粉末的粘合剂的用途。