Patent ID: 8211612

Claim:
A polymer coating composition obtained by dissolving a fluorine-containing polymer compound in a solvent comprising a fluorinated acetal represented by formula (3): wherein R 6 represents a hydrogen atom, a methyl group, or an ethyl group; and the fluorine-containing polymer compound comprising at least one repeated unit selected from the group consisting of: wherein, R 8 represents an alkyl group, an alicyclic group, or an aromatic group optionally containing a fluorine atom, R 9 represents an alkyl group, an alicyclic group, or an aromatic group containing a fluorine atom, and in each of R 8 and R 9 , said alkyl, alicyclic or aromatic group comprises a functional group represented by formula (2): wherein R 5 is a hydrogen atom, a hydrocarbon group, or a protective group having a cyclic structure of 3 to 15 carbon atoms and optionally one or more fluorine atoms.