Patent ID: 8852844

Claim:
A thermosetting silicon-containing intermediate-film-forming composition for a multilayer resist process used in lithography, the thermosetting silicon-containing intermediate-film-forming composition comprising: (A) a silicon-containing compound obtained by hydrolyzing and condensing a hydrolyzable silicon compound using an acid as a catalyst; (B) one or more thermal crosslinking accelerators represented by the following general formula (1) or (2): L a H b X (1), wherein L represents lithium, sodium, potassium, rubidium or cesium, X represents a hydroxyl group or a monovalent or polyvalent organic acid group having 1 to 30 carbon atoms, a represents an integer of 1 or more, b represents an integer of 0 or 1 or more, and a+b is a valence of the hydroxyl group or the organic acid group; M a′ H b′ A (2), wherein M represents sulfonium, iodonium or ammonium, A represents a hydroxyl group or a monovalent or polyvalent organic acid group having 1 to 30 carbon atoms or non-nucleophilic counter ion, a′ represents an integer of 1 or more, b′ represents an integer of 0 or 1 or more, and a′+b′ is a valence of the hydroxyl group, the organic acid group or the non-nucleophilic counter ion; (C) a monovalent or polyvalent organic acid having 1 to 30 carbon atoms; (D) an alcohol having a formula selected from the following group: where: X′ represents a hydrogen or a methyl; R′ represents an organic group having one or more carbon atoms and having methylene as the carbon at the hydroxyl group side; and n represents an integer of at least 3 and less than 100; and (E) an organic solvent; wherein the thermosetting silicon-containing intermediate-film-forming composition is a composition for forming an intermediate film in a multilayer resist having 3 or more layers.