G - Physics – 02 – B
Patent
G - Physics
02
B
18/103
G02B 5/30 (2006.01) C09B 45/24 (2006.01) C09B 45/32 (2006.01) G02B 1/08 (2006.01)
Patent
CA 1317077
ABSTRACT OF THE DISCLOSURE The present invention relates to a dye- containing light-polarizing film wherein a disazo dye represented by the formula (I) is used: Image (I) wherein Me represents a transition metal, being copper, nickel, zinc or iron, R represents a 1-naphthol or 2- naphthol residue which is bonded to azo group at the position adjacent to its hydroxyl group forming a complex bond together with the transition metal and which may have a substituent such as a sulfonic acid, sulfonamide, amino, acylamino or arylamino group or a hydroxyl group not adjacent to the azo group, X and Y represent a hydrogen atom, a C1-C4 alkyl, lower alkoxy, carboxylic acid, sulfonic acid, sulfonamide, sulfon- alkylamide, amino, acrylamino or nitro group or a halogen atom, and Z represents a hydrogen atom or a C1- C4 alkyl or lower alkoxy group, said formula (I) having from 1 to 3 sulfonic acid groups. Said dye-containing light-polarizing film, as compared with the conventional ones, not only exhibits a high durability, but also has excellent polarization performance enough to be comparable to the light- polarizing films in which iodine is used. Consequently, said dye-containing light-polarizing film is effectively used for use in displays in which liquid crystals are used and optical instruments including CRT filters.
586489
Higashi Koji
Kawasaki Sinjiro
Nishii Yutaka
Okada Toyokazu
Marks & Clerk
Sumitomo Chemical Company Limited
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