STYRENATION OF OILS BASED ON SECONDARY ESTERS OF CASTOR-OIL

The synthesis of styrenated oils based on secondary esters of castor o il is described. The steps of the process are as follows: (1) esterifi cation of castor oil with fatty acids of drying and semidrying oils; ( 2) splitting of castor oil esters; and (3) conversion of the splitting mixture to either triglyceride or partial glyceride. While the trigly ceride samples were styrenated by a conventional process, the partial glycerides' thermally labile azo groups were initially inserted into t he oil molecule, and then this intermediate was reacted with styrene. The obtained styrenated oils showed good film properties.