BLOCK COPOLYMER AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a block copolymer capable of forming a polymer micelle which can fix or release a substance exhibiting various functions by reversible interactions and can be used without deterioration in dispersion stability in a solution even when morphology in the particle or the like changes by the fixation or release. SOLUTION: The block copolymer is constituted of a block (X) comprised of a polyalkylene ether, a block (Y) comprised of a poly(N-acylalkyleneimine) bearing a 3C or higher acyl group and a block (Z) comprised of a poly(alkyleneimine) bearing an acyl group different from the acyl group in the block (Y) or bearing no acyl group, where the block (Y) and the block (Z) are directly linked and each block has a number-average polymerization degree of 5-10,000. COPYRIGHT: (C)2006,JPO&NCIPI