申请人:Nakanishi Sadahiro
公开号:US20120235091A1
公开(公告)日:2012-09-20
The present invention provides a polarizing film having a high dichroic ratio.
The polarizing film of the present invention contains an azo compound represented by the following general formula (1).
In the general formula (1), the OH group is attached to the naphthalene ring at an ortho position relative to the azo group attached to the ring, R
1
represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted acetyl group, a substituted or unsubstituted benzoyl group, or a substituted or unsubstituted phenyl group, M represents a counterion, m represents an integer of 0 to 2, n represents an integer of 0 to 6, at least one of m and n is not 0, and Q represents an anthraquinone ring having an OH group.