Coating-type composition for forming organic film, patterning process, polymer, and method for manufacturing polymer

A coating-type composition for forming an organic film comprising:

• a polymer having a partial structure shown by the following general formula (2);
• and an organic solvent,
• wherein in the formula (2), ring structures Ar1 and Ar2 represent a benzene ring or a naphthalene ring optionally having a substituent, W1 represents an aryl group having 6 to 30 carbon atoms and optionally having a substituent, represents an organic group having at least one aromatic ring, a hydroxy group, or an alkyloxy group having 1 to 10 carbon atoms, W2 is optionally a part of a repeating unit, and when W2 is the organic group, the organic group W2 is optionally crosslinked to another repeating unit.

The coating-type composition for forming an organic film according to claim wherein the polymer further comprises a partial structure shown by the following general formula (3)

• wherein in the formula (3), ring structures Ar1 and Ar2 are the above ring structures Ar1 and Ar2, and W3 represents a hydrogen atom.

A polymer having a structure shown by the Loliowing general formula (1) as a partial structure,

• wherein in the formula (1), ring structures Ar1 and Ar2 represent a benzene ring or a naphthalene ring optionally having a substituent, and W1 represents an aryl group having 6 to 30 carbon atoms and optionally having a substituent.

A polymer having a partial structure shown by the following general formula (2),

• wherein in the formula (2), ring structures Ar1 and Ar2 represent a benzene ring or a naphthalene ring optionally having a substituent, W1 represents an aryl group having 6 to 30 carbon atoms and optionally having a substituent, W2 represents an. organic group having at least one aromatic ring, a hydroxy group, or an alkyloxy group having 1 to 10 carbon atoms, W2 is optionally a part of a repeating unit, and when W2 is the organic group, the organic group W2 is optionally crosslinked to another repeating unit.