Light-polarizing films containing dichroic dyes

Claim 1

Light-polarizing film containing at least one organic water-soluble polymer and one or more dichroic dyes which, in the form of the free acid, correspond to the following formula I ##STR11## in which n is the number 1 or 2 R is C 1-14 alkyl R 1 and R 3 independently of one another represent H or SO 3 H, R 2 is selected from the group consisting of H, NH 2 , NH-acetyl, NH-benzoyl, NH-alkyl and NH-aryl, R 4 is selected from the group consisting of H, OH, OR, SO 3 H and Cl, R 5 i OH or NH 2 , R 6 is selected from the group consisting of NO 2 , CN, CF 3 , H, NH 2 , NH-acetyl, NH-benzoyl, NH-alkyl, NH-aryl, OH, OR, SO 3 H and Cl, R 7 is selected from the group consisting of COOH, COOR, CN, NO 2 , halogen, OH, OR, R, SO 3 H, H, NH 2 , NH-acetyl, NH-benzoyl, NH-alkyl and NH-aryl, R 8 is H, R or OR and X is Cl, SO 3 H or H.