UST883015I4 - Defensive publication - Google Patents

Abstract

THERE ARE DISCLOSED PHOTOGRAPHIC EMULSIONS CONTAINING SILVER HALIDE-DIAMINE COMPLEXES. RADIATION-SENSITIVE PAPERS OF THE PRINT-OUT TYPE COATED WITH SUCH COMPLEXES ARE ALSO DISCLOSED. THE COMPLEXES ARE REPRESENTED BY THE FORMULA ((AGX)2 DIAMINE) WHEREIN X IS A HALOGEN ATOM. EXEMPLARY OF SUCH COMPOUNDS ARE THE FOLLOWING COMPLEXES: SILVER CHLORIDE-ETHYLENEDIAMINE

((AGCL)2NH2CH2CH2NH2)

SILVER BROMIDE-ETHYLENEDIAMINE

((AGBR)2NH2CH2CH2NH2)

SILVER IODIDE-ETHYLENEDIAMINE ((AGI)2NH2CH2CH2NH2); SILVER CHLORIDE-PROPYLENEDIAMINE

((AGCL)2NH2CH2CH2CH2NH2)

SILVER BROMIDE-PROPYLENEDIAMINE

((AGBR)2NH2CH2CH2CH2NH2)

SILVER IODIDE-PROPYLENEDIAMINE

((AGI)2NH2CH2CH2CH2NH2)

EFFECTIVE COMPLEXES INCLUDE THE SILVER HALIDE-ALKYLENE DIAMINES SUCH AS SILVER HALIDE-ETHYLENEDIAMINE, SILVER HAPER SQUARE FOOT OF SURFACE. ALTHOUGH THE OPTICAL BRIGHTENTERS OF THE INVENTION HAVE PARTICULAR APPLICABILITY TO PHOTOGRAPHIC ELEMENTS, THEIR USE IS NOT LIMITED THERETO. THEY MAY ALSO BE USED, FOR INSTANCE, IN LIGHTING PANELS; IN VARIOUS TYPE OF PLASTIC COMPOSITIONS, IN INKS, PAINTS AND THE LIKE OR IN ANY APPLICATION APPLIED TO A SURFACE OR IN A FILM FOR THE EMISSION OF VISIBLE LIGHT UPON EXPOSURE TO ULTRAVIOLET LIGHT. ILLUSTRATIVE COMPOUNDS USEFUL AS OPTICAL BRIGHTENERS IN ACCORDANCE WITH THE PRESENT INVENTION ARE: 3-METHYLFURO(2,3-B)QUINOXALIN-2(4H)-ONE 3-PHENYLFURO(2,3-B)QUINOXALINE-2(4H)-ONE 3-METHYL-4-N-OCTYL-FURO(2,3-B)-2(4H)-ONE 3-METHYL-4-N-OCTADECYLFURO(2,3-B)QUINOXALIN-2(4H)-ONE 3-DECYLFURO(2,3-B)QUINOXALIN-2(4H)-ONE 2-METHYL-3-DECYLFURO(2,3-B)QUINOXALINE-2(4H)-ONE THE PHOTOGRAPHIC SILVER HALIDE EMULSIONS AND ELEMENTS CONTAINING THE OPTICAL BRIGHTENERS CAN BE CHEMICALLY SENSITIZED, E.G., WITH NOBLE METAL SENSITIZERS ALONE OR IN COMBINATION WITH SULFUR OR SELENIUM SENSITIZERS. THEY CAN CONTAIN SPECTRAL SENSITIZERS, INCORPORATED COLOR-FORMING COUPLERS, INCORPORATED DEVELOPING AGENTS, ANTIFOGGANTS, HARDENERS, PLASTICIZERS, COATING AIDS, AND OTHER SUITABLE PHOTOGRAPHIC ADDENDA, SUCH AS DESCRIBED IN U.S. PAT. 3,297,446 (COLUMNS 4-9).

Description

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification. including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED FEBRUARY 2, 1971 T883,015 SILVER HALIDE PRINTOUT PHOTOGRAPHIC MATERIALS Robert D. Lindholm, Kodak Park Works, Rochester, NY. 14650 Filed June 1, 1970, Ser. No. 42,594 Int. Cl. G03c 1/02 U.S. Cl. 96114.6 No Drawing. 9 Pages Specification There are disclosed photographic emulsions containing silver halide-diamine complexes. Radiation-sensitive papers of the print-out type coated with such complexes are also disclosed. The complexes are represented by the formula [(AgX) diamine] wherein X is a halogen atom. Exemplary of such compounds are the following complexes: silver chloride-ethylenediamine (AgCl NH CH CH NH silver bromide-ethylenediamine (AgBr) NH CH CH NH silver iodide-ethylenediamine [(AgI) NH CH CH NH silver chloride-propylenediamine )2 2 2 2 2 2] silver bromide-propylenediamine (AgBr) NH cH CH CH NH silver iodide-propylenediamine Effective complexes include the silver halide-alkylene diamines such as silver halide-ethylenediarnine, silver halide propylenediamine, silver halide tetramethylenediamine, silver halide-pentamethylenediamine, silver halidehexamethylenediamine, etc.