Patent ID: 6117827
Filing Date: 2000-09-12
Classification: C10M,C10N

Abstract:
A process for manufacturing a biodegradable lubricant base oil, characterized in that the following (A), (B) and (C) are mixed and subjected simultaneously to an ester interchange reaction in the presence of an enzymatic catalyst, wherein the enzymatic catalyst is a lipase having specificity to glyceride positions 1 and 3:(A) 30 to 60% by weight of a fatty oil comprising20% by weight or more trans-isomeric tatty acids,60% or more by weight mono-ene tatty acids having 16 or more carbons, and12% or less by weight di-ene fatty acids having 16 or more carbons;(B) 5 to 35% by weight of a fatty oil consisting of60% or more by weight mono-ene fatty acids having 16 or more carbons, and12% or less by weight di-ene fatty acids having 16 or more carbons,with the proviso that no fatty acids in (B) is trans-isomeric; and(C) 15 to 45% by weight of one ofa fatty oil comprising 80% by weight or more medium-chain saturated fatty acids,medium-chain fatty acids, andlower alcohol esters of medium-chain fatty acids.