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    • 4. 发明授权
    • Hybrid nonisocyanate polyurethane network polymers and composites formed
therefrom
    • 混合非异氰酸酯聚氨酯网络聚合物和由其形成的复合材料
    • US6120905A
    • 2000-09-19
    • US94864
    • 1998-06-15
    • Oleg L. Figovsky
    • Oleg L. Figovsky
    • C08K7/02C08G71/04C08L75/04B32B27/40
    • C08G71/04Y10T428/31601
    • This invention relates to a hybrid nonisocyanate polyurethane network polymer formed by cross-linking at least one cyclocarbonate oligomer and at least one amine oligomer. The cyclocarbonate oligomer contains a plurality of terminal cyclocarbonate groups. At least one cyclocarbonate oligomer further comprises from about 4% to about 12% by weight of terminal epoxy groups. Because at least one cyclocarbonate oligomer contains both cyclocarbonate and epoxy reactive groups, the network formed therefrom is referred to as a hybrid nonisocyanate polyurethane network. The cyclocarbonate oligomer or oligomers have an average functionality towards primary amines of from about 2.0 to about 5.44. The amine oligomer comprises at least one primary amine-terminated oligomer terminated with primary amine groups and has an average functionality towards cyclocarbonate groups of from about 3.0 to about 3.8. The amine oligomer is present in an amount from about 0.93 to about 0.99 of the amount of the amine oligomer that would be required to achieve a stoichiometric ratio between the primary amine groups of the amine oligomer and the cyclocarbonate groups of the cyclocarbonate oligomer. The hybrid nonisocyanate polyurethane network polymer formed has a gel fraction of not less than about 0.96 by weight. This invention also relates to methods of making hybrid nonisocyanate polyurethane networks and their use as a composite matrix material.
    • 本发明涉及通过交联至少一种环碳酸酯低聚物和至少一种胺低聚物形成的混合非异氰酸酯聚氨酯网络聚合物。 环碳酸酯低聚物含有多个末端环碳酸酯基团。 至少一个环碳酸酯低聚物还包含约4重量%至约12重量%的末端环氧基团。 由于至少一个环碳酸酯低聚物含有环碳酸酯和环氧反应性基团,因此形成的网络被称为混合非异氰酸酯聚氨酯网络。 环碳酸酯低聚物或低聚物具有约2.0至约5.44的伯胺的平均官能度。 胺低聚物包含至少一个以伯胺基团封端的伯胺封端的低聚物,并具有约3.0至约3.8的环碳酸酯基团的平均官能度。 胺低聚物的存在量为实现胺低聚物的伯胺基和环碳酸酯低聚物的环状碳酸酯基团之间化学计量比所需的胺低聚物量的约0.93至约0.99。 形成的混合非异氰酸酯聚氨酯网状聚合物的凝胶分数不小于约0.96重量%。 本发明还涉及制备混合非异氰酸酯聚氨酯网络的方法及其作为复合基质材料的用途。