Patent ID: 7297461
Filing Date: 2007-11-20
Classification: C08K,C08L

Abstract:
1. A radiation-sensitive resin composition comprising (A) a resin containing a structural unit of the following formula (I), wherein R 1 represents a substituted or unsubstituted, linear or branched, divalent hydrocarbon group having 1-20 carbon atoms or a substituted or unsubstituted divalent alicyclic hydrocarbon group having 3-20 carbon atoms, R 2 individually represents a linear or branched alkyl group having 1-4 carbon atoms or a monovalent alicyclic hydrocarbon group having 4-20 carbon atoms or a substituted derivative thereof, or any two R 2 s form in combination and together with the carbon atom to which the two R 2 s bond a divalent alicyclic hydrocarbon group having 4-20 carbon atoms or a substituted derivative thereof, with the remaining R 2 being a linear or branched alkyl group having 1-4 carbon atoms or a monovalent alicyclic hydrocarbon group having 4-20 carbon atoms or a substituted derivative thereof, (B) a resin containing a recurring unit of the following formula (II), wherein R 3 individually represents a hydrogen atom, fluorine atom, methyl group, or a trifluoromethyl group, R 4 represents a linear or branched hydrocarbon group having 1-20 carbon atoms with a valence of (c+1), an alicyclic hydrocarbon group having 3-20 carbon atoms with a valence of (c+1), or an aromatic group having 6-20 carbon atoms with a valence of (c+1), or a group in which a —COO— group or —O— group is bonded to the linear or branched hydrocarbon group with a valence of (c+1), alicyclic hydrocarbon group with a valence of (c+1), or aromatic group with a valence of (c+1), provided that the carbonyl group in the —COO— group bonds to the main chain carbon atom in the formula (II), the linear or branched hydrocarbon group with a valence of (c+1), alicyclic hydrocarbon group with a valence of (c+1), or aromatic group with a valence of (c+1) being either substituted or unsubstituted, R 5 represents a hydrogen atom or a monovalent acid-dissociable group, a and b individually represent an integer of 0-3, provided that a and b satisfy the inequality of (a+b)≧1, and c is an integer of 1-3, (C) a photoacid generator.