Patent ID: 8084564

Claim:
A polymer comprising a unit represented by the following Formula (1), and a unit represented by the following Formula (5): wherein in Formula (1), R 1 to R 4 each independently represents a hydrogen atom or a substituted or unsubstituted alkyl group; Y and Z each independently represents a single bond, a substituted or unsubstituted divalent organic group, an ester group, an amide group or an ether group; and L 1 represents a substituted or unsubstituted divalent organic group, and wherein in Formula (5), R 5 represents a hydrogen atom or a substituted or unsubstituted alkyl group; U represents an oxygen atom, or NR′ in which R′ represents a hydrogen atom or an alkyl group; and L 2 represents a substituted or unsubstituted divalent organic group.