The instant invention teaches a method for forming a syndiotactic 1,2-polybutadiene product having a syndiotacticity of more than 66.5 % and a melting temperature of more than about 100°C. The method includes polymerizing 1,3-butadiene in solution with a solvent, in the presence of catalytically effective amounts of: (a) an organomagnesium compound; (b) a chromium compound; and, (c) a dihydrocarbyl hydrogen phosphite. The present invention also contemplates a product of the method and an article made from the product.
本发明传授了一种形成辛二反应性超过 66.5%、熔融温度超过约 100°C 的辛二反应性 1,2 聚
丁二烯产品的方法。该方法包括在催化有效量的下列物质存在下,用溶剂聚合溶液中的
1,3-丁二烯:(a)
有机镁化合物;(b)
铬化合物;和 (c) 二氢羰基
亚磷酸氢盐。本发明还考虑了该方法的产品和由该产品制成的物品。