申请人:Hafren Jonas Fredrik
公开号:US20090111980A1
公开(公告)日:2009-04-30
A process for the modification of amines and alcohols, comprising (i) providing a substrate having amino groups or alcohol groups, wherein said substrate is, e.g., a polysaccharide; (ii) providing a modifying agent which is a lactone, an ester, a polyester, a carbonate, a polycarbonate, a lactide, a glycolide, an anhydride, an acid, a thioester or a carbamate; (iii) providing a catalyst which is, e.g., a amino acid or an organic acid; and (iv) reacting the substrate with the modifying agent in the presence of the catalyst.
一种改性胺和醇的方法,包括(i)提供具有氨基或醇基的基质,其中所述基质是例如多糖类;(ii)提供一种改性剂,其是内酯,酯,聚酯,碳酸酯,聚碳酸酯,乳酸内酯,乙酸乙酯,酸酐,酸,硫酯或氨基甲酸酯;(iii)提供一种催化剂,其是例如氨基酸或有机酸;和(iv)在催化剂的存在下将基质与改性剂反应。