Patent ID: 6551968
Filing Date: 2003-04-22
Classification: C10M,C10N

Abstract:
A biodegradable 2-stroke engine lubricant basestock composition, comprising:(a) between about 40 to 60 parts by weight of polyneopentyl polyol esters, (b) between about 15 to 35 parts by weight of a dicarboxylic acid ester coupling agent formed by reacting a dicarboxylic acid having 18 to 36 carbon atoms with a linear or branched chain monoalcohol, the coupling agent promoting the compatibility of the finished ester basestock with traditional 2-stroke lubricant additives, and (c) the balance of at least one additional ester for adjusting the physical properties of the lubricant, selected from the group consisting of: (1) polyol esters of linear and/or branched monocarboxylic acids, (2) dicarboxylic acid esters of dicarboxylic acids having from about 5 to 12 carbon atoms and linear and/or branched monoalcohols, (3) linear and/or branched monocarboxylic acid esters of linear and/or branched monoalcohols, and (4) mixtures thereof all parts by weight based on the total weight of the basestock.