Light-polarizing films containing dichroic dyes

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.sub.1-14 alkyl
• R.sub.1 and R.sub.3 independently of one another represent H or SO.sub.3 H,
• R.sub.2 is selected from the group consisting of H, NH.sub.2, NH-acetyl, NH-benzoyl, NH-alkyl and NH-aryl,
• R.sub.4 is selected from the group consisting of H, OH, OR, SO.sub.3 H and Cl,
• R.sub.5 i OH or NH.sub.2,
• R.sub.6 is selected from the group consisting of NO.sub.2, CN, CF.sub.3, H, NH.sub.2, NH-acetyl, NH-benzoyl, NH-alkyl, NH-aryl, OH, OR, SO.sub.3 H and Cl,
• R.sub.7 is selected from the group consisting of COOH, COOR, CN, NO.sub.2, halogen, OH, OR, R, SO.sub.3 H, H, NH.sub.2, NH-acetyl, NH-benzoyl, NH-alkyl and NH-aryl,
• R.sub.8 is H, R or OR and
• X is Cl, SO.sub.3 H or H.