Patent ID: 6797787
Filing Date: 2004-09-28
Classification: C08C

Abstract:
A process for preparing an epoxidized polyalkenylene, comprising:reacting a polyalkenylene, an aqueous solution of 15 to 90% by volume of hydrogen peroxide and a carboxylic acid having from 1 to 3 carbon atoms in the presence of a catalyst comprising a member selected from the group consisting of i) aminophosphonic acid and ii) mixtures of phosphonic acid, and aminophosphonic acid, without addition of an organic solvent or water, to obtain said epoxidized polyalkenylene; wherein said epoxidized polyalkenylene has a number-average molar mass of between 500 and 50 000 g/mol; and wherein said epoxidized polyalkenylene has an epoxide oxygen content of between 1 and 25% by mass.