Patent ID: 8450393

Claim:
A composition comprising: a block polymer compound including a hydrophobic block segment and a hydrophilic block segment; a hydrophobic substance; and an aqueous medium, wherein a micelle is formed by adsorption of the hydrophobic block segment on the hydrophobic substance in the aqueous medium, wherein the hydrophobic block segment comprises (a) a repeating structural unit of the following General Formula (A) which includes a self-crosslinkable functional group and (b) a repeating structural unit of the following General Formula (1) or General Formula (2): General Formula (A) wherein in General Formula (1), A denotes a polyalkenyl ether group, which may be substituted; B denotes a linear or branched alkylene group having 1 to 15 carbon atoms, which may be substituted; m is an integer of from 0 to 30, wherein when m is a plural number, the B groups may be different from each other; D denotes a single bond or a linear or branched alkylene group having 1 to 10 carbon atoms, which may be substituted; E denotes an aromatic ring, which may be substituted, a fused ring, which may be substituted, a structure in which at most 3 aromatic rings, which may be substituted, are bonded via a single bond, or a methylene group; and R 1 denotes a linear or branched alkyl group having 1 to 5 carbon atoms, which may be substituted, or an aromatic ring, which may be substituted, wherein in General Formula (2), A denotes a polyalkenyl ether group, which may be substituted; B 1 denotes a linear or branched alkylene group having 1 to 15 carbon atoms, which may be substituted; m is an integer of from 0 to 30, wherein when m is a plural number, the B 1 groups may be different from each other; and J denotes a linear or branched alkyl group having 3 to 15 carbon atoms, which may be substituted, an aromatic ring, which may be substituted, a fused ring, which may be substituted, or a structure in which at most 3 aromatic rings, which may be substituted, are bonded via a single bond.