申请人:STEPAN COMPANY
公开号:US11059933B2
公开(公告)日:2021-07-13
Isocyanate-modified polyester-epoxide polymer (i-PEEP) compositions are disclosed. The i-PEEP compositions comprise a reaction product of a polyepoxide compound, a polyisocyanate, and a polyester polyol composition. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.2 to 2. The i-PEEP index as defined herein is within the range of 100 to 200. The i-PEEP composition has a Tg within the range of −30° C. to 35° C. Low- and elevated-temperature processes catalyzed by bases or Lewis acids for making the i-PEEP compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for coatings, elastomers, adhesives, sealants, and other valuable products is assembled from readily available starting materials without reliance on the polyamines typically used to cure epoxy systems.
本发明公开了异氰酸酯改性聚酯环氧聚合物(i-PEEP)组合物。i-PEEP 组合物包括聚环氧化合物、多异氰酸酯和聚酯多元醇组合物的反应产物。环氧当量与羟基当量的比例在 0.2 至 2 之间。本文定义的 i-PEEP 指数在 100 至 200 之间。还公开了在碱或路易斯酸催化下制造 i-PEEP 组合物的低温和高温工艺。通过这种简单而又创新的方法,一种可用于涂料、弹性体、粘合剂、密封剂和其他有价值的产品的新型聚合物可由容易获得的起始材料组装而成,而无需依赖通常用于固化环氧体系的多胺。