Patent ID: 8628673

Claim:
A resin composition for pattern formation comprising the following: a block copolymer (a) containing an aromatic ring-containing polymer and a poly(meth)acrylate as block moieties, wherein the number average molecular weight of the block copolymer (a) is 300,000 to 5,000,000, the ratio of the total of the aromatic ring-containing polymer moiety and the poly(meth)acrylate moiety to the entire block polymer (a) is 50 mol % or more, and the molar ratio of the aromatic ring-containing polymer moiety to the poly(meth)acrylate moiety is 1:1 to 1:5; an aromatic ring-containing homopolymer (b) composed of a monomer that composes the aromatic ring-containing polymer contained in the block copolymer (a) as a block moiety, wherein the weight average molecular weight of the aromatic ring-containing homopolymer (b) is 1,500 to 8,000; and a poly(meth)acrylate homopolymer (c) composed of a monomer that composes the poly(meth)acrylate contained in the block copolymer (a) as a block moiety, wherein the weight average molecular weight of the poly(meth)acrylate homopolymer (c) is 1,500 to 14,000; wherein, the weight ratio of the total of the aromatic ring-containing homopolymer (b) and the poly(meth)acrylate homopolymer (c) to the entire resin composition is 10% by weight to 90% by weight, and the weight ratio of the total of the aromatic ring-containing polymer moiety contained in the block copolymer (a) as a block moiety and the aromatic ring-containing homopolymer (b) to the entire resin composition is 10% by weight to 60% by weight.