PROCESS FOR THE PRODUCTION OF OIL-SOLUBLE POLYOL ESTERS OF DICARBOXYLIC ACID MATERIALS IN THE PRESENCE OF A METAL SALT OF A HYDROXY AROMATIC COMPOUND

摘要

A PROCESS FOR THE PRODUCTION OF OIL-SOLUBLE POLYOL ESTERS OF DICARBOYXLIC ACID MATERIALS IN THE PRESENCE OF A METAL SALT OF A HYDROXY AROMATIC COMPOUND Oil-soluble polyol ester reaction products of C6C10,000 hydrocarbon substituted C4-C10 dicarboxylic acid materials, e.g. alkenyl succinic anhydride, have been readily produced under solution reaction conditions characterized by conducting said reaction in the presence of at least a filtration suppressing insolubles reducing amount of a hydrocarbon-soluble metal salt of a hydroxy aromatic compound, e.g. an alkaline earth metal alkyl phenate or naphtholate, preferably an overbased calcium sulfurized phenate, whereby the filtration suppressing insolubles resulting from said reaction is markedly reduced to less than 1 vol. %, the product solution haze is less than 30 nephelos and as a consequence thereof the filtration of the reaction product solution is facilitated.