149  US 6,939,662  B2  150  *  *  *  *  *  11.  The composition according to claim  1,  which further  comprises a solvent  (C) comprising a mixture solvent of  propylene glycol monoalkyl ether acetates with propylene  glycol monoalkyl ethers or alkyl lactates.  10.  The composition according to claim  1,  wherein the  compound (B) comprises a compound (B2) which is capable  of generating a carboxylic acid by irradiation of actinic ray  or radiation.  9.  The composition according to claim  1,  wherein the  compound (B) comprises a compound (Bl) which is capable  of generating an organic sulfonic acid by irradiation of  actinic ray or radiation.  8.  The composition according to claim  1,  wherein the  resin is obtained by a dropping polymerization method  which comprises further adding a monomer continuously or  intermittently during the radical polymerization of the  monomer in the presence of a radical polymerization initia› tor.  4.  The composition according to claim  1,  wherein  R$_{3}$ a  is  a tertiary alkyl group having an alicyclic group.  3.  The composition according to claim  1,  wherein L$_{1 }$ is a  carbonyl group, an ethylene group or a single bond.  2.  The composition according to claim  1,  wherein Re is a  fluorine atom or a trifluoromethyl group.  7. The composition according to claim  1,  wherein the  resin is obtained by a living polymerization method.  6. The composition according to claim  1,  wherein the  resin is obtained by a process which comprises removing  low molecular components from a polymer obtained by a  radical polymerization method.  5.  The compos1t10n according to claim  1,  wherein the  resin has a weight-average molecular weight of from 3,000  to 30,000 and a molecular weight dispersion degree of from  1.1 to 1.5.  (IV)  m represents 0 or  1:  wherein Rla represents a hydrogen atom, a fluorine atom,  a chlorine atom, a bromine atom, a cyano group or a  trifluoromethyl group,  R41 to  R$_{46 }$ each independently represents a hydrogen  atom, a fluorine atom or a fluoroalkyl group, with the  proviso that at least one of  R$_{41 }$ to  R$_{46 }$ is not a hydrogen  atom,  X$_{2 }$ represents a hydrogen atom or a group capable of  decomposing by the action of an acid,  na’ represents an integer of from 1 to 5, with the proviso  that when n is 2 or greater, the two or more  R$_{4}$ /s  to  R$_{4}$ /s  and  X$_{2}$ ’s  may be the same or different. 