METHOD FOR PREPARING LINEAR DIMERS OF alpha-METHYLSTYRENE

摘要

FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to a method for synthesis of linear unsaturated dimmers of alpha-methylstyrene that are used as modifying agents in manufacturing polymers. Method is carried out by the dimerization reaction in the presence of zeolite Y at the mole ratio SiO2/Al2O3 = 6.2-7.0 in NaH-form and ionic exchange degree 40-60%. The amount of catalyst is 1-5 wt.-%, the reaction temperature is 40-800C. Invention provides increasing working time of catalyst and improving indices of the process. ^ EFFECT: improved method of synthesis. ^ 9 ex