Patent ID: 8809476

Claim:
A polymer comprising: a repeating unit shown by a following general formula (1); and at least one of repeating units shown by following general formulas (2) to (5), a content of the repeating unit shown by the following general formula (1) is from 5 to 70 mol % based on a total amount of repeating units included in the polymer, wherein R 1 represents a hydrogen atom, a methyl group, a fluorine atom, or a trifluoromethyl group, R 2 represents a substituted or unsubstituted aryl group having 6 to 22 carbon atoms, Y represents a carbon atom, and X represents an atomic group that forms an alicyclic hydrocarbon group together with Y, wherein R 4 represents a hydrogen atom or a methyl group, R 5 represents a monovalent organic group, i is an integer from 0 to 3, and j is an integer from 0 to 3, wherein 0≦i+j≦5 is satisfied, wherein R 6 represents a hydrogen atom or a methyl group, R 7 represents a monovalent organic group, k is an integer of 1 or 2, and l is an integer from 0 to 3, wherein 1≦k+l≦5 is satisfied, wherein R 8 represents a hydrogen atom or a methyl group, R 9 represents a monovalent organic group, m is an integer from 0 to 3, and n is an integer from 0 to 3, wherein 0≦m+n≦5 is satisfied, wherein R a represents a hydrogen atom or a methyl group, R b represents a monovalent organic group, r is an integer from 0 to 3, and s is an integer from 0 to 3.