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    • 3. 发明授权
    • Photocrosslinkable polyurethanes
    • 可光交联聚氨酯
    • US07476484B2
    • 2009-01-13
    • US10567318
    • 2004-08-04
    • Bernhard SailerCatherine SchoenenbergerOttilie Zelenko
    • Bernhard SailerCatherine SchoenenbergerOttilie Zelenko
    • G03F7/00G03F7/004
    • C08G18/831C08G18/0823C08G18/6692C08G18/69C09D175/16G03F7/038G03F7/0388
    • Linear crosslinkable polyurethanes obtained from (a) at least one diisocyanate having 2 to 30 carbon atoms, (b) at least one aliphatic or cycloaliphatic diol having 2 to 30 carbon atoms, to whose carbon chain at least one carboxyl group is covalently bonded, and some or all of said carboxyl groups have been esterified with an olefinically unsaturated C3-C8alcohol or with the glycidyl ester of an olefinically unsaturated C3-C8carboxylic acid, and (c) optionally at least one aliphatic or cycloaliphatic diol having 2 to 30 carbon atoms, to whose carbon chain at least one carboxyl group is covalently bonded. The polyurethanes are suitable, alone or as a mixture with other reactive components, for thermal and/or photochemical crosslinking in crosslinkable compositions for the production of mouldings, coatings and in particular solder masks.
    • 由(a)至少一种具有2-30个碳原子的二异氰酸酯,(b)至少一种具有2-30个碳原子的脂族或脂环族二醇与至少一个羧基共价结合的碳链获得的线性交联聚氨酯,以及 所述羧基中的一些或全部已被烯属不饱和C 3 -C 8醇或与烯属不饱和C 3 -C 8羧酸的缩水甘油酯酯化,和(c)任选至少一种具有2-30个碳原子的脂族或脂环族二醇, 至少一个羧基共价结合到其碳链上。 聚氨酯单独或作为与其它反应性组分的混合物适用于可交联组合物中的热和/或光化学交联,用于生产模制品,涂料和特别是焊接掩模。