Patent ID: 6774093
Filing Date: 2004-08-10
Classification: C09K,C10M,C10N

Abstract:
A high viscosity synthetic polyneopentylpolyol ester lubricant base stock, comprising the reaction mixture formed byreacting a neopentylpolyol having less than 10 carbon atoms with at least one monocarboxylic acid selected from the group consisting of linear monocarboxylic acids having from 4 to 10 carbon atoms and branched chain acids having from 5 to 10 carbon atoms, the linear acid representing at least 15 mole per cent of the acid mixture, in the presence of an excess of hydroxyl groups, and an acid catalyst to form polyneopentylpolyol partial esters, neutralizing the acid catalyst; and reacting the partial polyneopentylpolyol esters with at least one monocarboxylic acid selected from the group consisting of linear acids having from 4 to 10 carbon atoms, and branched chain acids having from 5 to 10 carbon atoms, the resulting polyneopentylpolyol ester having a viscosity from about 68 to 400 cSt at 40Â° C.