Surfactant, Emulsifier, Or Solvent Patents (Class 430/493)
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Patent number: 4756996Abstract: A photographic processing composition which comprises an aqueous alkaline solution, a silver halide developing agent and a substantially water-insoluble, cationic polyoxyethylene amine containing 2 or 3 mols of ethylene oxide.Type: GrantFiled: November 3, 1986Date of Patent: July 12, 1988Assignee: Polaroid CorporationInventor: Frank E. Debruyn, Jr.
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Patent number: 4716099Abstract: Liquid petroleum sulfonates are useful alone or in combination with less lipophilic anionic surfactants in the preparation of dispersions of water-insoluble photographic addenda, such as couplers and ultraviolet absorbers, in hydrophilic colloid compositions. Such dispersions are useful in photographic elements. Crystallization of the addenda is inhibited and, for some addenda, other advantages are obtained.Type: GrantFiled: June 2, 1986Date of Patent: December 29, 1987Assignee: Eastman Kodak CompanyInventor: Michael J. Simons
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Patent number: 4703000Abstract: Provided herewith is an anti-brick/anti-static composition useful for treating film surfaces. The composition comprises (i) an anionic or cationic surfactant exhibiting anti-static properties, and (ii) a similar charged inorganic particle, e.g., a negatively charged silica or positively charged alumina coated silica, having an average particle size of less than 0.1 micron. Upon coating a film surface with the composition, good anti-static properties are realized without experiencing problems with bricking or blocking of the film. The composition is particularly useful in coating microfilm since it also provides the anti-brick/anti-static properties without deleteriously effecting the viewing capabilities of the film over a wide range of magnifications.Type: GrantFiled: September 30, 1985Date of Patent: October 27, 1987Assignee: James River Graphics, Inc.Inventor: George R. Hodgins
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Patent number: 4624903Abstract: Liquid petroleum sulfonates are useful alone or in combination with less lipophilic anionic surfactants in the preparation of dispersions of water-insoluble photographic addenda, such as couplers and ultraviolet absorbers, in hydrophilic colloid compositions. Such dispersions are useful in photographic elements. Crystallization of the addenda is inhibited and, for some addenda, other advantages are obtained.Type: GrantFiled: November 21, 1985Date of Patent: November 25, 1986Assignee: Eastman Kodak CompanyInventor: Michael J. Simons
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Patent number: 4546069Abstract: The processing time of exposed photographic silver dye bleach materials is shortened by using a bleach preparation which contains a strong acid, a water-soluble iodide, a water-soluble organic nitro compound, an anti-oxidizing agent, a bleach catalyst, an organic photographic developing agent and/or a benzotriazole derivate.Type: GrantFiled: July 18, 1984Date of Patent: October 8, 1985Assignee: Ciba-Geigy AGInventors: Arnost Libicky, Meinrad Schar
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Patent number: 4507381Abstract: A self-contained silver halide diffusion transfer imaging sheet is provided which contains three layers on a substrate. The first layer is a silver halide emulsion formed in a non-ionic material. The intermediate layer is a water barrier. The third layer is a nucleating region which contains collodial silver. A developer, base and silver transport agent can also be located in these layers. For example, the base and silver transport agent can be located in the nucleating layer, with the developer located in the emulsion layer. After the emulsion is exposed to actinic radiation, a non-aqueous activating medium is supplied which initiates the development and diffusion transfer processes. The final result is a positive image in the nucleating layer.Type: GrantFiled: April 10, 1984Date of Patent: March 26, 1985Assignee: The Mead CorporationInventors: Paul C. Adair, Homer G. Duda, Amy L. Burkholder, Richard F. Wright, Mary M. Stanley
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Patent number: 4496651Abstract: This invention relates to diffusion transfer processes and products wherein the transmission density of the pigmented processing composition layer is increased by employing an alkali earth metal salt to increase the light-absorbing ability of a carboxynaphthol phthalein optical filter agent within said processing composition layer. In another embodiment, a carboxyindole phthalein optical filter agent also is included in said processing composition layer, and a zinc or cadmium salt is employed to shift the spectral absorption of the carboxyindole phthalein into the green region of the visible spectrum. In a further embodiment, a calcium salt is employed in a viscous pigmented processing composition comprising a light-reflecting pigment, colloidal silica and a metal chelating agent, e.g., an alkylene polyamine polyacetic acid to stabilize the spreading characteristics of the composition.Type: GrantFiled: June 11, 1984Date of Patent: January 29, 1985Assignee: Polaroid CorporationInventors: Leon D. Cerankowski, Gary S. LaPointe, Neil C. Mattucci
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Patent number: 4472294Abstract: A fluorine-containing compound of the formula: ##STR1## wherein Rf is a C.sub.3 -C.sub.21 fluorine-containing group; R is a hydrogen atom or a C.sub.1 -C.sub.4 acyl group; Q is an aliphatic or aromatic hydrocarbon group having not more than twenty-one carbon atoms; and n is an integer of 1 to 10 lowers the surface tensions of water and/or organic liquids and the interfacial tensions between them.Type: GrantFiled: January 29, 1982Date of Patent: September 18, 1984Assignee: Daikin Kogyo Co., Ltd.Inventors: Iwao Hisamoto, Chiaki Maeda, Mitsuhiro Nishiwaki
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Patent number: 4414307Abstract: Sparingly-soluble alcohols, such as benzyl alcohol, which function to enhance photographic coupling efficiency are incorporated in photographic color developing solutions by the use of solid water-soluble alcohol-precursor compounds. The solid precursor compounds, which can be advantageously utilized as components of an all-solid photographic processing kit, comprise a solubilizing group which is cleaved by the alkaline environment of the color developing solution to form the sparingly-soluble alcohol. Examples of such solid precursor compounds which are especially advantageous in the preparation of color developing solutions are the alkali metal monobenzylcarbonates and the alkali metal monobenzylsulfites.Type: GrantFiled: February 24, 1982Date of Patent: November 8, 1983Assignee: Eastman Kodak CompanyInventors: Jon A. Kapecki, Thomas M. Gormel, Sheridan E. Vincent
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Patent number: 4383028Abstract: A photographic chemistry comprised of a solution containing a mixture of different chemicals which cooperate to minimize the need for long film exposure times to achieve high film quality and contrast. The photographic chemistry includes a number of alkalies in a pH range from about 8 to 14, a developer in solution with the alkalies, a solvent mixed with the alkalies and the developer, a modified alkanolamide in solution with the alkalies, the developer and the solvent, and a hydrotrope mixed with the modified alkanolamide. Other chemicals that can be used in the photographic chemistry include an emulsion penetrant, a cleaner for various components of film processing equipment, a chelating agent, and an enzyme to enhance the reactions of the various chemicals in the photographic chemistry. A specific mixture of chemicals is disclosed.Type: GrantFiled: August 3, 1981Date of Patent: May 10, 1983Assignee: Lorin W. BootsInventor: Byron R. Boots
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Patent number: 4368258Abstract: In the process for preparing impregnated polymer latex compositions by impregnating a hydrophobic substance in dispersed polymer particles in an aqueous polymer latex, the improvement comprises impregnating said hydrophobic substance, wherein the impregnation is effected by mixing said hydrophobic substance which is solid state, a water-miscible organic solvent and aqueous polymer latex wherein a polymer of the polymer latex is prepared from ethene monomers and containing at least one hydrophilic group.Type: GrantFiled: March 11, 1981Date of Patent: January 11, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Mitsuto Fujiwhara, Syunji Matsuo, Tsuneo Wada, Naoto Abe, Toyoaki Masukawa, Akio Iijima, Keiji Oishi
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Patent number: 4339530Abstract: This invention relates to a developer mixture for washing out light-sensitive copying layers previously exposed in imagewise manner and containing a polymer of an N-vinyl amine, of vinyl alcohol or of a vinyl alcohol derivative, an alcohol being water-soluble in an amount less than 10% by weight, and water as the main constituent, the mixture containing as said polymer a copolymer which is water-soluble or which can be dispersed in water to form a stable dispersion, composed of (a) hydrophilic units of the formula I: ##STR1## wherein A is O-R or ##STR2## R is a hydrogen atom or a methyl group; R.sub.1 is a hydrogen atom, an alkyl group or an alkoxy alkyl group having 1 to 10 carbon atoms each or an aryl group with 6 to 10 carbon atoms; R.sub.Type: GrantFiled: October 14, 1980Date of Patent: July 13, 1982Assignee: Hoechst AktiengesellschaftInventors: Gerhard Sprintschnik, Rudolf Neubauer, Gerhard Buhr
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Patent number: 4329422Abstract: A desensitizing solution and process for using the solution are disclosed to desensitize a diazo photosensitive printing plate after development. The solution comprises a water soluble desensitizing agent capable of reacting with any residual photosensitive diazo on the developed plate to render the diazo incapable of forming an oleophilic substance and a filming agent selected from water soluble aliphatic polyols have less than eight carbon units, the acid derived monoesters of these polyols, and the alkali metal salts of the monoesters.Type: GrantFiled: June 25, 1979Date of Patent: May 11, 1982Assignee: Napp Systems (USA), Inc.Inventor: Eugene L. Langlais
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Patent number: 4284709Abstract: A process for incorporating photographic additives which are sparingly soluble to insoluble in water into a free-flowing, aqueous preparation which contains a hydrophilic colloid and is used to prepare photographic layers, by mixing the photographic additives with a combination of at least one non-ionic alkylphenol/alkylene oxide or diphenolmethane/alkylene oxide adduct and at least one anionic esterification product of these adducts and, optionally, a water-immiscible solvent and then finely dispersing this mixture in an aqueous solution of the hydrophilic colloid, which solution contains further water-soluble or dispersed water-insoluble constituents optionally.Spontaneous emulsions of the photographic additives with good fine dispersion are obtained in this way without high expenditure of mechanical energy. The emulsions are suitable for the preparation of photographic layers, which are used in photographic materials with improved characteristics.Type: GrantFiled: May 8, 1980Date of Patent: August 18, 1981Assignee: Ciba-Geigy AktiengesellschaftInventor: Ivan Tomka
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Patent number: 4267255Abstract: A processing composition adapted for use in a silver diffusion transfer film unit which comprises an aqueous alkaline solution, a silver halide developing agent and a surfactant comprising a hydrophobe and a polyethylene oxide portion containing an average of about 5-25 repeating units of ethylene oxide per hydrophobe.Type: GrantFiled: December 12, 1979Date of Patent: May 12, 1981Assignee: Polaroid CorporationInventor: Karl J. Schreiber