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1. 发明授权

US06579835B2 Polyurethanes having a low friction coefficient 失效
标题翻译：具有低摩擦系数的聚氨酯
公开(公告)号：US06579835B2
公开(公告)日：2003-06-17
申请号：US09875980
申请日：2001-06-08
申请人： Massimo Scicchitano , Tania Trombetta , Stefano Turri
发明人： Massimo Scicchitano , Tania Trombetta , Stefano Turri
IPC分类号： C10M14912
CPC分类号： C09D175/04 , C08G18/0814 , C08G18/2875 , C08G18/5015 , C08L27/12 , C08L71/00
摘要： Use of fluorinated polyurethanes thermally crosslinkable for obtaining coatings having an improved friction coefficient for the dry lubrication of rubbers, plastics, metals, glass, said polyurethanes obtainable from aqueous dispersions of cationic oligourethanes having a molecular weight≦9,000, formed by: a) polyisocyanates, having NCO functionality higher than 2, b) bifunctional hydrogenated monomers, c) bifunctional hydroxylated (per)fluoropolyethers, e) monofunctional hydroxyl or carboxylic (per)fluoropolyethers or monofunctional hydroxyl (per)fluoroalkanes optionally: d) hydrogenated monomers by which it is possible to insert a crosslinkable chemical function in the oligourethane; dI) hydrogen-active compounds, able to form with the NCO functions thermolabile bonds.
摘要翻译：使用可热交联的氟化聚氨酯，用于获得具有改进的摩擦系数的涂层，用于橡胶，塑料，金属，玻璃的干燥润滑，所述聚氨酯可从具有分子量为= 9,000的阳离子低聚氨酯的水性分散体获得，所述聚氨酯由以下形成：a）多异氰酸酯具有高于2的NCO官能团，b）双功能氢化单体，c）双功能羟基化（全）氟聚醚，e）单官能羟基或羧基（全）氟聚醚或单官能羟基（全）氟烷烃，任选地：d）氢化单体，可能在低聚氨酯中插入可交联的化学功能; dI）能够与NCO形成的氢活性化合物具有热不稳定性键。

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