USE OF GRAFT COPOLYMER AS SOLUBILIZING AGENT, AND PHARMACEUTICAL PREPARATION, COSMETIC PREPARATION AND FOOD CONTAINING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a solubilizing agent capable of solubilizing hydrophobic substances and useful in e.g. producing homogeneous pharmaceutical preparations by using a copolymer formed by grafting specific monomer(s) to a polyalkylene oxide. SOLUTION: This solubilizing agent is obtained by using a graft copolymer formed by grafting to (A) a polyalkylene oxide (pref. with a number-average molecular weight of 300-100,000) (B) at least one monomer selected from the group consisting of (i) monoethylenically unsaturated 3-8C carboxylic acid 1-30C alkyl esters, (ii) aliphatic 1-30C carboxylic acid vinyl esters, (iii) 1-30C alkyl vinyl ethers, (iv) monoethylenically unsaturated 3-8C carboxylic acid N-1-30C alkyl-substituted amides, and (v) monoethylenically unsaturated 3-8C carboxylic acid N,N-1-30C dialkyl-substituted amides.