Dextrin fatty acid ester and cosmetic

Abstract

A dextrin fatty acid ester is provided in which the dextrin has an average degree of glycopolymerization of 3 or more and 100 or less. The fatty acid comprises one or more linear saturated fatty acids having 14 or more and 18 or less carbon atoms, and one or more branched saturated fatty acids having 14 or more and 18 or less carbon atoms. The molar fraction of the linear saturated fatty acid in the fatty acid is 0.75 or more and 0.95 or less. The average degree of substitution of the fatty acid per glucose unit is 1.5 or more and 2.0 or less.

1 . A dextrin fatty acid ester wherein
 the dextrin has an average degree of glycopolymerization of 3 or more and 100 or less,   the fatty acid comprises one or more linear saturated fatty acids having 14 or more and 18 or less carbon atoms, and   one or more branched saturated fatty acids having 14 or more and 18 or less carbon atoms,   the molar fraction of the linear saturated fatty acid in the fatty acid is 0.75 or more and 0.95 or less, and   the average degree of substitution of the fatty acid per glucose unit is 1.5 or more and 2.0 or less.   
     
     
         2 . The dextrin fatty acid ester according to  claim 1 , wherein the average degree of glycopolymerization of the dextrin is 3 or more and 50 or less. 
     
     
         3 . The dextrin fatty acid ester according to  claim 1 , wherein
 the molar fraction of the linear saturated fatty acid in the fatty acid is 0.8 or more and 0.9 or less, and   the average degree of substitution of the fatty acid per glucose unit is 1.65 or more and 1.80 or less.   
     
     
         4 . The dextrin fatty acid ester according to  claim 1 , wherein
 the linear saturated fatty acid is palmitic acid, and   the branched saturated fatty acid is isopalmitic acid.   
     
     
         5 . A cosmetic comprising:
 an oil; and   a dextrin fatty acid ester wherein   the dextrin has an average degree of glycopolymerization of 3 or more and 100 or less,   the fatty acid comprises one or more linear saturated fatty acids having 14 or more and 18 or less carbon atoms and one or more branched saturated fatty acids having 14 or more and 18 or less carbon atoms,   the molar fraction of the linear saturated fatty acid in the fatty acid is 0.75 or more and 0.95 or less, and   the average degree of substitution of the fatty acid per glucose unit is 1.5 or more and 2.0 or less.   
     
     
         6 . The cosmetic according to  claim 5 , wherein the oil comprises a volatile hydrocarbon oil. 
     
     
         7 . The dextrin fatty acid ester according to  claim 2 , wherein
 the molar fraction of the linear saturated fatty acid in the fatty acid is 0.8 or more and 0.9 or less, and   the average degree of substitution of the fatty acid per glucose unit is 1.65 or more and 1.80 or less.   
     
     
         8 . The dextrin fatty acid ester according to  claim 2 , wherein
 the linear saturated fatty acid is palmitic acid, and   the branched saturated fatty acid is isopalmitic acid.   
     
     
         9 . The dextrin fatty acid ester according to  claim 3 , wherein
 the linear saturated fatty acid is palmitic acid, and   the branched saturated fatty acid is isopalmitic acid.   
     
     
         10 . The dextrin fatty acid ester according to  claim 7 , wherein
 the linear saturated fatty acid is palmitic acid, and   the branched saturated fatty acid is isopalmitic acid.