abstract |
PROBLEM TO BE SOLVED: To provide a plasticizer for a lower fatty acid ester of cellulose having an action of reducing the optical anisotropy of a lower fatty acid ester of cellulose. SOLUTION: A compound which is an ester of a diglycerin-based polyhydric alcohol and a fatty acid and has at least three acyl groups having 2 to 18 carbon atoms is used as a plasticizer. |