The present invention relates to a dye-containing light-polarizing film wherein a disazo dye represented by the formula (I) is used: [Figure] (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
The present invention relates to a dye-containing light-polarizing film wherein a disazo dye represented by the formula (I) is used: [Figure] (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, sulfonalkylamide, 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.
대표청구항▼
A dye-containing light-polarizing film comprising a dichroic dye absorbed into a high polymer film, in which said dichroic dye is a water-soluble copper-, nickel-, zinc- or iron-containing diazo dye represented by formula (I) as a free acid [Figure] (I) wherein Me represents a transition metal selec
A dye-containing light-polarizing film comprising a dichroic dye absorbed into a high polymer film, in which said dichroic dye is a water-soluble copper-, nickel-, zinc- or iron-containing diazo dye represented by formula (I) as a free acid [Figure] (I) wherein Me represents a transition metal selected from the group consisting of copper, nickel, zinc and iron; R represents a 1-naphthol or 2-naphthol residue which is bonded to the azo group at the position adjacent to the hydroxyl group forming a complex bond together with the transition metal and which may have a substituent selected from the group consisting of sulfonic acid, sulfonamide, amino, acylamino, arylamino and hydroxyl not adjacent to the azo group; X and Y represent hydrogen, C1-C4 alkyl, lower alkoxy, carboxylic acid, sulfonic acid, sulfonamide, amino, acylamino, nitro or halogen; and Z represents hydrogen, C1-C4 alkyl or lower alkoxy; said formula (I) having from 1 to 3 sulfonic acid groups.
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이 특허를 인용한 특허 (8)
Chang, Won Suk; Jung, Myung Sup; Kim, Myung Man; Won, Jong Hoon; Jung, Won Cheol, Composition for polarizing film, polarizing film, method of manufacturing the same, and liquid crystal display provided with the polarizing film.
Chang, Won Suk; Jung, Myung Sup; Kim, Myung Man; Won, Jong Hoon; Jung, Won Cheol, Composition for polarizing film, polarizing film, method of manufacturing the same, and liquid crystal display provided with the polarizing film.
Mortazavi Mohammad (Sunnyvale CA) Yoon Hyun Nam (New Providence NJ) Teng Chia-Chi (Piscataway NJ), High extinction polarizer films comprising liquid crystal polymeric moieties.
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