May 5,  2011  29  US 2011/0104454 Al  9.  The composition for forming a layer to be plated accord› ing to claim  1,  wherein the polymer having a functional group  that forms an interaction with a plating catalyst or a precursor  thereof and a radical polymerizable group comprises a  copolymer which comprises a unit represented by the follow› ing Formula (A) and a unit represented by the following  Formula (B):  (A)  (C)  (B)  10.  The composition for forming a layer to be plated  according to claim  9,  wherein the unit represented by For› mula (B) comprises an alicyclic carboxylic group at a termi› nal of the unit.  11.  The composition for forming a layer to be plated  according to claim  9,  wherein, in Formula (B), Wis a car› boxylic acid group, and a chain length ofL  $^{2 }$is in the range of  from 6 atoms to 18 atoms.  12.  The composition for forming a layer to be plated  according to claim  9,  wherein, in Formula (B), Wis a car› boxylic acid group, and both X and L  $^{2 }$are each a single bond.  13.  The composition for forming a layer to be plated  according to claim  9,  wherein the value of ionic polarity or an  acid value of the unit represented by Formula (B) is in the  range of from 1.5 mmol/g to 10.0 mmol/g.  14.  The composition for forming a layer to be plated  according to claim  9,  wherein the polymer having a func› tional group that forms an interaction with a plating catalyst  or a precursor thereof and a radical polymerizable group  comprises a copolymer further comprising a unit represented  by the following Formula (C):  17.  The composition for forming a layer to be plated  according to claim  1,  wherein the water-insoluble photopo› lymerization initiator comprises a benzoin compound or a  derivative thereof; a benzyl ketal-based compound or a  derivative thereof; a hydroxy ketone-based compound or a  derivative thereof; a benzophenone-based compound or a  derivative thereof; an acetophenone-based compound or a  derivative thereof; an a-aminoalkyl phenone-based com› pound or a derivative thereof; a bisacyl phosphinoxide-based  compound or a derivative thereof; an acyl phosphinoxide› based compound or a derivative thereof; a thioxanthone› based compound or a derivatives thereof; an anthraquinone› based compound or a derivative thereof; or an oxime ester› based compound or a derivative thereof.  16.  The composition for forming a layer to be plated  according to claim  7,  wherein the composition further com› prises an additive selected from the group consisting of  sodium hydrogen carbonate, sodium carbonate and sodium  hydroxide.  15.  The composition for forming a layer to be plated  according to claim  1,  wherein the content of the water-soluble  flammable liquid in the mixed solvent is in the range of from  30% by mass to 80% by mass.  18.  A method of producing a metal pattern material com› prising:  wherein, in Formula (A) and Formula (B), R$^{1 }$to R 5  each  independently represent a hydrogen atom, or a substi› tuted or unsubstituted alkyl group; X,  Y,  and Z each  independently represent a single bond, a substituted or  unsubstituted divalent organic group, an ester group, an  amide group, or an ether group; L $^{1 }$and L $^{2 }$each indepen› dently represent a single bond, or a substituted or unsub› stituted divalent organic group; and W represents an  ionic polar group that forms an interaction with a plating  catalyst or a precursor thereof.  coating the composition for forming a layer to be plated  according to claim  1  on or above a substrate or an adhe› sion-aiding layer to form a coated film for forming a  layer to be plated, and then applying energy to the coated  film for forming a layer to be plated and curing the  coated film at a portion to which the energy has been  applied;  forming a patterned layer by developing an uncured por› tion of the coated film on or above the substrate or the  adhesion-aiding layer with an aqueous solution;  applying a plating catalyst or a precursor thereof to the  patterned layer; and  plating the plating catalyst or the precursor thereof.  wherein, in Formula (C), R  $^{6 }$represents a hydrogen atom, or  a substituted or unsubstituted alkyl group; X represents  a single bond, a substituted or unsubstituted divalent  organic group, an ester group, an amide group, or an  ether group; L $^{3 }$represents a single bond, or a substituted  or unsubstituted divalent organic group; and V repre› sents a non-dissociative functional group that forms an  interaction with a plating catalyst or a precursor thereof.  X  I  L2  I  w  X  I  L3  I  V 