Patent ID: 7498364

Claim:
A structured material including two or more mutually different oil-soluble dyes, the two or more mutually different oil-soluble dyes being included in a micelle formed from a block polymer having a repeating unit structure represented by the following general formula (1): where R 1 is selected from a linear, a branched or cylic alkyl group having 1 to 18 carbon atoms, —(CH(R 2 )—CH(R 3 )—O) 1 —R 4 and —(CH 2 ) m —(O) n —R 4 , in which l and m are, independently of each other, selected from integers of from 1 to 12, n is 0 or 1, R 2 and R 3 are, independently of each other, H or —CH 3 , and R 4 is H, a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms, Ph, Pyr, Ph-Ph, Ph-Pyr, —CHO, —CH 2 CHO, —CO—CH═CH 2 , —CO—C(CH 3 )═CH 2 , or —CH 2 COOR 5 , with proviso that hydrogen bonded to carbon may be substituted by a linear or branched alkyl group having 1 to 4 carbon atoms, F, Cl, or Br when R 4 is any other group than hydrogen, and carbon in the aromatic ring may be substituted by nitrogen, and R 5 is H or an alkyl group having 1 to 5 carbon atoms.