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2 035 761

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Application

3186576/04, 1987-12-14

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Actual filing date

1987-12-14

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Published

1995-05-20

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Inventor

Lifshits Eh.B.Khruleva L.S.Zalozhenkova E.A.Jashukova L.N.Nemykh G.F.Kirenskaja L.I.Formina L.V.Nesterenko A.V.

(73)

Holder

Arendnaja Organizatsija Nauchno-Issledovatel'Skogo I Proektnogo Instituta Khimiko-Fotograficheskoj Promyshlennosti

METHOD OF SPECTRAL SENSITIZATION OF EXTRA FINELY DIVIDED BROMOSILVER PHOTOGRAPHIC EMULSIONS FOR AMPLITUDE-PHASE HOLOGRAMS Russian patent published in 1995 - IPC

Abstract RU 2035761 C1

FIELD: chemical-photography industry. SUBSTANCE: spectral sensitization is performed by addition of dye and activating agent to emulsion. 3-Ethyl-3′-γ-sulfopropyl -4-keto-4′-phenyl-5-(3-γ-sulfopropyl -4-phenyl-5-methylthiazolinylidene-2-ethylidene) -thiazol- inothiazolocyanine-betaine sodium salt is used as a sensitizing agent. Before sensitizing agent addition the dye of the formula (I) where or (II) where Y - S, n = 0, z - 1-methylpyridine-2; Y - O, n = 2, z - 1-methyl-4-ethyltetrazole-1,2,3,4; Y - O, n = 2, z - 1,4-dimethyltetrazole-1,2,3,4 (concentration is (500-750)x 500-750·10-6 M/M AgHal) and activating agent of the formula (concentration is (1500-1750) x (1500-1750)·10-6 M/M AgHal were added to emulsion. EFFECT: enhanced photosensitivity, retained diffraction effectiveness and safety of photographic properties. 1 tbl

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RU 2 035 761 C1

Authors

Lifshits Eh.B.

Khruleva L.S.

Zalozhenkova E.A.

Jashukova L.N.

Nemykh G.F.

Kirenskaja L.I.

Formina L.V.

Nesterenko A.V.

Dates

1995-05-20—Published

1987-12-14—Filed

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