A kind of composition, the esterified cellulose ether comprising group a) comprising aliphatic unit price acyl group and formula-C (O)-R-COOH, R is bivalent hydrocarbon radical, wherein I) degree of neutralization of group-C (the O)-R-COOH is not more than 0.4, and II) total ester degree of substitution is 0.03 to 0.70 and b) have at 20 DEG C in the form of 2 weight % aqueous solutions measure 1.2 to 200mPa.The cellulose ether of the viscosity of s, the composition gelation and show reduced syneresis when further increasing the temperature of gel at elevated temperatures.
