Polymerization of 1, 3-butadiene to crystalline polybutadienes having a syndiotactic1, 2-structure

摘要

A process for the preparation of crystalline 1,3-butadiene polymers with a substantially syndiotactic 1,2 structure, which comprises contacting butadiene with a catalyst formed by contacting a dehalogenated compound of a group VIII metal of the Mendeleev's Periodic System with a trialkyl aluminum or with a mixture of a trialkyl aluminum and a dialkyl aluminum monohalide, in the molar ratio of trialkyl to dialkyl monohalide of 0.8: 1 or higher. (Machine-translation by Google Translate, not legally binding)