N-acylamino acid derivatives of cellulose or starch based polysaccharides and emulsified products containing the same

摘要

To provide a novel substance having an excellent water-dispersibility capable of forming an emulsion which spreads rapidly onto the skin, does not undergo aggregation or segregation due to a salt, and is excellent in a low temperature stability. The aforementioned problems were found to be solved by means of a certain polysaccharide and the invention was established.

主权项

1. A polysaccharide represented by formula (1): wherein: A represents a polysaccharide residue; R represents an acyl group derived from a saturated or unsaturated fatty acid having 8 to 12 carbon atoms; —CO—X—NH— represents an amino acid residue selected from the group consisting of aspartic acid and glutamic acid; n is an integer of 100 to 3,000; and said polysaccharide has a weight average molecular weight of 1,500,000 to 8,000,000, wherein A represents one or more selected from the group consisting of a cellulose residue, a starch residue, a hydroxyethylcellulose residue, a methylcellulose residue, an ethylcellulose residue, and a hydroxypropylcellulose residue, and wherein said polysaccharide has a degree of dispersion of 1.5 to 50.