Patent ID: 7081541

Claim:
A process of making a chemical compound having the formula (I): wherein R 1 is a C 1 to C 4 hydrocarbon, linear or branched, and mixtures thereof, R 2 is C 7 to C 22 linear or branched hydrocarbon and mixtures thereof, and the index of x is greater than or equal to 3; (A) stripping substantially a conventional polyethylene glycol alkyl ether of ethylene glycol monoalkyl monoether and diethylene glycol monoalkyl monoether components; (B) reacting the product of Step (A) with a compound having the formula (III): wherein R 2 is C 7 to C 22 linear or branched hydrocarbon and mixtures thereof and R 3 is C 1 to C 4 and mixtures thereof, in the presence of a base catalyst; (C) applying heat to Step (B) ranging in temperature of from about 60° C. to about 200° C.; (D) optionally, conducting Step (B) in a vacuum ranging from about 20 kPa to about 0.013 kPa (200 mm Hg to 0.1 mm Hg) for a period of time ranging from 0.1 to 10 hours, either during or following step (C).