Patent ID: 8388870
Filing Date: 2013-03-05
Classification: B22F,B82Y,C22C

Abstract:
1. A method for producing a metal-nanoparticle-containing composite, comprising: (I) a step of dissolving, in an aqueous medium, a (meth)acrylic-based polymer (B1) prepared through polymerization of a (meth)acrylate-based macromonomer (x1) having a polyethylene glycol chain (b1) in the presence of a chain transfer agent (x3) having a functional group (b3) represented by —SR (where R represents an alkyl group having 1 to 18 carbons; a phenyl group that may optionally have a substituent on a benzene ring; or an alkyl group having 1 to 8 carbons, the alkyl group having at least one functional group selected from the group consisting of a hydroxy group, an alkoxy group having 1 to 18 carbons, an aralkyloxy group having 1 to 18 carbons, a phenyloxy group that may optionally have a substituent on a benzene ring, a carboxy group, a salt of a carboxy group, a monovalent or polyvalent alkylcarbonyloxy group having 1 to 18 carbons, and a monovalent or polyvalent alkoxycarbonyl group having 1 to 18 carbons) and a (meth)acrylic-based polymer (B2) prepared through polymerization of a (meth)acrylate-based monomer (x2) having a phosphate residue (b2) represented by —OP(O)(OH) (II) a step of adding a metal compound (A) or an aqueous solution of the metal compound (A) to an aqueous solution prepared in (I); and (III) a step of dropping a reducing agent (C), an aqueous solution of the reducing agent (C), or an aqueous solution containing the (meth)acrylic-based polymer (B1) and/or the (meth)acrylic-based polymer (B2) and the reducing agent (C), into a mixed solution prepared in (II).