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1.
公开(公告)号:US4788262A
公开(公告)日:1988-11-29
申请号:US938909
申请日:1986-12-08
CPC分类号: C08G18/792 , C08G18/4208 , C08G18/725 , C08G18/7831 , Y10S524/901
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。
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公开(公告)号:US4501852A
公开(公告)日:1985-02-26
申请号:US505600
申请日:1983-06-20
IPC分类号: C08G18/00 , C08G18/08 , C08G18/10 , C08G18/12 , C08G18/28 , C08G18/44 , C08G18/50 , C08G18/72 , C08G18/78 , C08G18/80 , C08G18/84 , C09D175/00 , C09D175/04 , C08L75/12
CPC分类号: C08G18/84 , C08G18/0819 , C08G18/10 , C08G18/12 , C08G18/2805 , C08G18/5042 , C08G18/721 , C08G18/7818 , C08G18/8064
摘要: The present invention relates to a stable, aqueous dispersion of polyurethane-ureas wherein said polyurethane-ureas contain(i) about 10 to 120 milliequivalents per 100 grams of polyurethane-urea of chemically incorporated anionic groups, and(ii) up to about 10% by weight, based on the weight of the polyurethane-urea, of lateral and/or terminal hydrophilic chains containing ethylene oxide units,wherein the counterions of the anionic groups are a mixture of volatile and non-volatile cations in an equivalent ratio of about 1:4 to 4:1.The present invention is also directed to the coatings and films prepared from these dispersions.
摘要翻译: 本发明涉及一种稳定的聚氨酯 - 脲的水分散体,其中所述聚氨酯 - 脲包含(i)每100克化学掺入的阴离子基团的聚氨酯 - 尿素约10至120毫当量,和(ii)至多约10% 重量,基于聚氨酯 - 脲的重量,含有环氧乙烷单元的侧面和/或末端亲水链,其中阴离子基团的抗衡离子是挥发性和非挥发性阳离子的混合物,其当量比为约1 :4到4:1。 本发明还涉及由这些分散体制备的涂料和薄膜。
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