Patent ID: 6884571

Claim:
An intermediate layer composition for a three-layer resist process comprising (A) an octakis(silsesquioxane) skeleton-containing polymer obtained by hydrosilylation polymerization of a compound represented by the following formula (I) with a compound represented by the following formula (II) in the presence of a platinum-containing catalyst: wherein R a to R h each independently represent a hydrogen atom, a halogen atom or an alkyl group, and at least two of R a to R h are hydrogen atoms; R 1 —C≡C—(R 2 ) a —C≡C—R 3 (II) wherein R 1 and R 3 each independently represent a monovalent organic or organometallic group, R 2 represents a bivalent organic or organometallic group, and a represents 0 or 1.