申请人:DSM RIM NYLON V.O.F
公开号:EP0239170A1
公开(公告)日:1987-09-30
Unsaturated oligomers and solutions thereof are stabilized with a trisubstituted urea to provide improved storage stability. The stabilized unsaturated oligomer solutions are useful in lactam polymerization processes which yield nylon block copolymers containing unsaturated oligomer segments. The unsaturated oligomers disclosed herein have at least 4 carbons and have pendant thereto at least one hydroxy, amine, epoxy, acyllactam, or acyllactam precursor group.
使用三取代脲稳定不饱和低聚物及其溶液,可提高储存稳定性。稳定的不饱和低聚物溶液适用于内酰胺聚合工艺,该工艺可产生含有不饱和低聚物段的尼龙嵌段共聚物。本文公开的不饱和低聚物至少有 4 个碳原子,并至少有一个羟基、胺、环氧、酰内酰胺或酰内酰胺前体基团。