GB613534A - Light sensitive materials - Google Patents

Abstract

613,534. Light-sensitive material. GENERAL ANILINE & FILM CORPORATION. Feb. 13, 1946, No. 4535. Convention date, Feb. 1, 1945. [Class 98 (ii)] Material is light-sensitized with an N-nitroso- N-arylamide. An azo-coupling component may be also incorporated in the material, or the exposed material may be developed with an alkaline solution of the coupling component. Paper, a cellulose or cellulose ester film, glass, textile material, a gelatin-coated surface, or metal may be coated with a composition containing an N-nitroso-N-arylamide, a coupler, a mild acid, and water, or a volatile organic solvent. Self-coupling N-nitroso-N-arylamides such as N-nitroso-N-phenyl-N<1>-#-naphthylurea may be used and developed with ammonia vapour or an alkaline solution. Couplers specified are resorcylic acid, phenol, resorcinol, chromotropic acid, 2: 3-dihydroxynaphthalene, H-acid, R-salt, 2-hydroxy-1-benzenesulphonic acid, 2: 5-dimethyl-6-dimethylaminomethyl-1- phenol, 2 : 3 - hydroxynaphthoylaminoethyl - amide, phloroglucinol, 2: 3-dihydroxy-naphthalene-monohydroxyethyl ether, and #-naphthol- 3: 6-disulphonic acid. The light source for exposure may be a quartz mercury vapour lamp, an incandescent lamp, an arc lamp, or a fluorescent lamp. In example 1, a solution of N-nitroso-N-(p-methoxyphenyl)-urea prepared by adding sodium nitrite to an acetic acid solution of p-methoxyphenylurea is added to an aqueous solution of chromotropic acid or, 2: 3-dihydroxy-naphthalene and the mixture coated on paper and dried. The exposed material is developed with ammonia vapour. In further examples, the procedure is similar, using a mixture of (2) N-nitroso-N-(p-diethylaminophenyl)-urea and resorcylic acid or phenol, and (3) the nitroso derivative of p-phenylenediurea and H-acid. In example 4, N-nitroso-N- phenyl-N<1>-#-naphthylurea, acetic acid, and water is coated on to paper, cloth, or gelatincoated glass, and the exposed material developed with ammonia vapour. In example 5, an acetic acid solution of N-nitroso-N-phenylstearylamide is coated on to a textile base, and the dried and exposed material is developed in an aqueous solution containing R-salt and sodium carbonate.