| abstract |
PURPOSE: To perform satisfactory emulsification with an emulsifier derived from a living body and to simultaneously stabilize an emulsified compsn. by using specified hyaluronic acid derivs. as an emulsification stabilizer. n CONSTITUTION: Hyaluronic acid derivs. represented by general formulae I, II (where R 1 is acyl, R 2 is hydroxyl, -OM (M is an alkali metal atom) or -NH 2 and n is an integer of ≥2) are used as an emulsification stabilizer having high safety derived from a living body. Since this stabilizer has hydroxyl groups in the molecule, an emulsified compsn. having high stability is obtd. without using alcohol. The viscosity of the emulsified compsn. can be regulated according to the mol.wts. of the hyaluronic acid derivs. This stabilizer has numerous uses for cosmetics, pharmaceuticals, etc. n COPYRIGHT: (C)1991,JPO&Japio |