Patent ID: 11880138
Assignee: JSR CORPORATION
Field: Optics (Instruments)
Classification: CPC G  C  H | IPC C  G

Claim 0:
1. A composition which enables a resist underlayer film to be formed, the composition comprising:
a product of an acid-catalyzed condensation reaction of a compound represented by formula (A) and a compound represented by formula (B); and
a solvent,, wherein,
in the formula (A), Ar1A represents an arene having 6 to 30 ring atoms, or a heteroarene having 5 to 30 ring atoms, wherein the arene having 6 to 30 ring atoms and the heteroarene having 5 to 30 ring atoms are each unsubstituted or substituted with a group which does not contain an oxygen atom, and the arene having 6 to 30 ring atoms is anthracene, phenanthrene, tetracene, pyrene, pentacene, coronene, perylene, biphenyl, dimethylbiphenyl, diphenylbiphenyl, fluorene, or 9,9-diphenylfluorene, and
in the formula (B), Ar2A represents a substituted or unsubstituted aryl group having 6 to 30 ring atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms, and R2A represents a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms, or Ar2A and R2A taken together represent a ring structure having 3 to 20 ring atoms together with the carbon atom to which Ar2A and R2A bond; and RX presents a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms.