Patent ID: 6254651
Filing Date: 2001-07-03
Classification: C10L,C10M

Abstract:
A method of improving the cold flow characteristics of an oil susceptible to wax formation at low temperatures, comprising adding to the oil a compound of the formula(R.sup.1 R.sup.2 N).sub.m --A--(NR.sup.1 R.sup.3).sub.n IaorBNR.sup.1.sub.2 IbwhereinA represents an (m+n) valent hydrocarbon radical and B represents a monovalent hydrocarbon radical optionally interrupted by at least one heteroatom selected from oxygen and nitrogen, each R.sup.1 independently represents--CHR.sup.4 (CHR.sup.5).sub.p COOR.sup.6 IIR.sup.2 and R.sup.3 each independently represent R.sup.1, H, or an alkyl group containing from 1 to 8 carbon atoms,R.sup.4 and R.sup.5 each independently represent H or an alkyl group containing from 1 to 8 carbon atoms,R.sup.6 represents a hydrocarbyl group containing from 8 to 32 carbon atoms optionally interrupted by at least one hetero atom selected from oxygen and nitrogen,m and n each represent an integer up to 12 or zero provided that the total number or R.sup.1 groups is at least 2, and p represents zero or an integer within the range of from 1 to 4.