A composition comprising a polymer compound A containing a repeating unit represented by the formula (1) and a polymer compound B containing a repeating unit represented by the formula (2):
- wherein R1 and R2 each independently represent a hydrogen atom, a fluorine atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group or an arylalkylthio group, and the hydrogen atom contained in these groups may be substituted with a fluorine atom, and
- wherein R3 and R4 each independently represent a hydrogen atom, a fluorine atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group or an arylalkylthio group, and the hydrogen atom contained in these groups may be substituted with a fluorine atom;
- p represents an integer of 2 to 10;
- a plurality of R3(s) may be the same or different;
- and a plurality of R4(s) may be the same or different, wherein the polymer compound A includes a block containing one or more repeating units selected from a repeating unit represented by the formula (12), a repeating unit represented by the formula (13) and a repeating unit represented by the formula (14):
- wherein R1 and R2 have the same meanings as defined above, and wherein R7, R8, R9, R10, R11, R12, R13 and R14 each independently represent a hydrogen atom, a fluorine atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group or an arylalkylthio group, and the hydrogen atom contained in these groups may be substituted with a fluorine atom, and R33, R34, R35 and R36 each independently represent a hydrogen atom, a fluorine atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group or an arylalkylthio group;
- wherein R1, R2, R33, R34, R35 and R36 have the same meanings as defined above, and wherein R15, R16, R17, R18, R19, R20, R21, R22, R23 and R24 each independently represent a hydrogen atom, a fluorine atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group or an arylalkylthio group, and the hydrogen atom contained in these groups may be substituted with a fluorine atom;
- wherein R1, R2, R33, R34, R35 and R36 have the same meanings as defined above, and wherein R25, R26, R27, R28, R29, R30, R31 and R32 each independently represent a hydrogen atom, a fluorine atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group or an arylalkylthio group, and the hydrogen atom contained in these groups may be substituted with a fluorine atom.