| 摘要 |
A composition for forming a lower layer film comprises a polymer(A) having a naphthalene derivative structural unit shown by the following formula (1),
wherein R 1 represents a hydroxyl group and the like, X represents a substitutable alkylene group having 1 to 20 carbon atoms and the like, n represents 0 to 6, m represents 1 to 8, and n + m represents an integer from 1 to 8, provided that two or more R 1 s may be the same or different and two or more Xs may be the same or different. |
