Polyisocyanate blends with improved compatibility with coreactants
    1.
    发明授权
    Polyisocyanate blends with improved compatibility with coreactants 失效
    聚异氰酸酯共混物与共反应物的相容性提高

    公开(公告)号:US4788262A

    公开(公告)日:1988-11-29

    申请号:US938909

    申请日:1986-12-08

    摘要: The present invention is directed to polyisocyanates which have improved compatibility with polyester coreactants and improved solubility in apolar solvents, the polyisocyanates containing, based on solids,(a) about 15 to 85 wt. % of an isocyanurate group-containing polyisocyanate based on hexamethylene diisocynate and(b) about 15 to 85 wt. % of a biuret group-containing polyisocyanate based on hexamethylene diisocyanate.The present invention is additionally directed to two-component polyurethane coating compositions based on the above polyisocyanates and branched polyester polyols. Finally, the present invention is directed to a process for preparing the polyisocyanate.

    摘要翻译: 本发明涉及具有改善的与聚酯共反应物的相容性和改善在非极性溶剂中的溶解度的多异氰酸酯,多异氰酸酯基于固体含有(a)约15至85wt。 %的基于六亚甲基二异氰酸酯的含异氰脲酸酯基的多异氰酸酯和(b)约15至85重量% %的基于六亚甲基二异氰酸酯的含缩二脲基团的多异氰酸酯。 本发明另外涉及基于上述多异氰酸酯和支链聚酯多元醇的双组分聚氨酯涂料组合物。 最后,本发明涉及一种制备多异氰酸酯的方法。