Patent ID: 6605598
Filing Date: 2003-08-12
Classification: A01N,C07H,Y10S

Abstract:
A nonaqueous method for synthesizing low molecular weight aliphatic sugar esters comprising(a) dissolving a sugar in an aprotic polar organic solvent to form a first sugar solution, (b) dissolving an aliphatic acid chloride in a suitable solvent to form a first chloride solution, (C) adding pyridine to said first sugar solution to form a second sugar solution, (d) mixing said first chloride solution dropwise to said second sugar solution to cause an esterification reaction and form an esterification reaction solution, (e) adding a sodium bicarbonate solution after said esterification reaction to decompose any pyridine hydrochloride byproducts to form a product solution, (f) recovering sugar esters from said product solution to form a filtrate, evaporating said filtrate to dryness, and dissolving the dry filtrate in a solvent selected from the group consisting of acetone, methanol, chloroform, and mixtures thereof.