申请人:A.E. STALEY MANUFACTURING
COMPANY
公开号:EP0217660A2
公开(公告)日:1987-04-08
An unsaturated poly (alpha-hydroxy acid) copolymer may be prepared by reacting a cyclic diester of an alpha-hydroxy carboxylic acid with an ethylenically-unsaturated epoxide. The reaction may be conducted at a temperature of 50 to 250°C in the presence of a ring-opening catalyst and a free-radical polymerization inhibitor. The unsaturated copolymer is suitable for use in the manufacture of fibres or may be cured by cross linking to produce a material suitable for the fabrication of plastics items and for use as coatings and in laminates. Furthermore the diester reagent may be derived economically from renewable natural resources.
不饱和聚(α-羟基酸)共聚物可通过α-羟基羧酸的环状二酯与乙烯不饱和环氧化物反应制备。反应可在开环催化剂和自由基聚合抑制剂存在下于 50 至 250°C 的温度下进行。这种不饱和共聚物适用于制造纤维,也可以通过交联固化,生产出适用于制造塑料制品、用作涂层和层压板的材料。此外,二酯试剂可以从可再生自然资源中经济地提取。