Eastman-kodak Company

Jeannine Rigola

Olivier Jean Poncelet

Didier J Martin

Danielle Marie Wettling

Oliver J Poncelet

Bernard A Eid

Boualem Mekki

An inorganic polymeric aluminosilicate material and a method for preparing the same, are disclosed. Instead of having a fibrous structure, the material has a structure consisting of spindles with a length in the range of from 10 to 100 &mgr;m and a width in the range of from 2 to 20 &mgr;m. This polymeric alumino-silicate can be used for the production of antistatic layers.

Inorganic polymer based on aluminium and silicon

An inorganic polymeric aluminosilicate material and a method for preparing the same, are disclosed. Instead of having a fibrous structure, the material has a structure consisting of spindles with a length in the range of from 10 to 100 &mgr;m and a width in the range of from 2 to 20 &mgr;m. This polymeric aluminosilicate can be used for the production of antistatic layers.

Inorganic polymer based on aluminum and silicon

The invention concerns a method of decontaminating a photographic effluent. The method comprises contacting the effluent with a fibrous polymeric alumino-silicate and, optionally, with a cerium-based catalyst on an activated carbon membrane. The iron, silver, thiosulphate and organics contents of photographic effluents are reduced.

Decontamination of a photographic effluent by treatment with a fibrous polymeric alumino-silicate

An organic-inorganic polymer comprising aluminosilicate having grafted thereon an organic radical having a &mdash;SH or &mdash;S(&mdash;CH,),&mdash;S&mdash; group wherein n is from 0 to 4.

Aluminosilicate organic-inorganic polymer

The present invention concerns a separative membrane, as well as a separation device containing this membrane, and a method for using this device. The membrane of the present invention comprises a support, the hydrophobicity of one of whose faces has been modified, the opposite face having an active layer comprising an inorganic hydrogel material and an ion carrier. This membrane has improved selectivity.

Separative membrane and method for using this membrane

The invention concerns an inorganic aluminum-based polymer and another element chosen from amongst silicon, titanium and zirconium. The polymer material is obtained from hydrolisable salts and/or compounds such as alcoxides. Application to the production of ancillary layers in photographic products.

Aluminum-based polymer material and use of this material in a

The present invention concerns a method of extracting halide ions contained in a photographic processing solution. The invention concerns a method for the selective extraction of halide ions using a separative membrane comprising a support covered with an active layer comprising an inorganic hydrogel material and an ion carrier, one of the faces of the support having been surface-modified. This method effectively regenerates photographic solutions.

Method of treating a photographic processing solution

The invention concerns a method for decontaminating a used photographic processing bath. This method consists of putting the processing bath in contact with a heat-reversible hydrophilic polymer which becomes hydrophobic above a temperature lower than the temperature of the processing bath. The tars and other organic contaminants present in the used photographic processing bath can be removed by cooling the heat-reversible polymer below the temperature where it becomes hydrophilic.

Method of decontaminating a photographic bath with heat-reversible

The present invention concerns an organic/inorganic composite product. This composite product results from the formation of a polymeric alumino-silicate in situ in an organic polymeric matrix such as a polyalkyene glycol. Application to the obtaining of an antistatic layer, notably for photographic products.

Organic/inorganic composite and photographic product containing such a

The invention concerns a homogeneous aqueous film-forming composition comprising a latex and an inorganic antistatic substance. The latex can be a polystyrene, and the antistatic substance is an inorganic fibrous polymer with the formula Al.sub.x Si.sub.y O.sub.z where x:y is between 1 and 3 and z between 2 and 6. This composition is useful for the production of antistatic layers for photographic materials.

Antistatic composition and photographic element containing a layer of

Polymeric conductive alumino-silicate material, element comprising said

The present invention concerns a process for treating photographic baths containing organic contaminants and a device for implementing this method. The process for treating a photographic bath containing contaminants comprises the step of putting the photographic bath in contact with a photographically inert material, resistant to a high pH and having a lipophilic surface. This method affords an improvement in the processing of photographic products.

Process for treating a photographic bath containing organic contaminants

The present invention improves the conservation of a photographic product with a cellulose ester type support. The present invention involves coating on the support or the photographic product with a transparent film-forming aqueous composition. The composition is a fibrous alumino-silicate polymer of formula Al.sub.x Si.sub.y O.sub.z in which x:y is between 1 and 3, and z is between 2 and 6. The support can be treated before the application of the photographic layers (as a substratum or under-layer) or after the application of the photographic layers (as a top layer). It is also possible to treat an exposed, developed film by applying a top layer of the said composition.

Method for improving the conservation of a photographic product with a

The invention concerns a composite gel comprising an inorganic matrix containing a fibrous inorganic polymer in which an active organic compound is dispersed. The invention also concerns a device comprising the gel and a process for delivering a controlled quantity of active organic compound in an aqueous solution. The invention applies to the prevention of biological growth in aqueous solutions used domestically, agriculturally or industrially, in particular in the solutions used in photographic processing. FIGURE of the drawing to be published with the Abstract: None

Organic/inorganic gels for delivering controlled quantities of active

The invention concerns a film-forming aqueous composition comprising a binder and an inorganic anti-static substance. The binder is in the form of a water-soluble polymer such as gelatin or hydroxyethyl cellulose free from any aluminum-chelating groups, and the anti-static substance is a fibrous inorganic polymer of the formula Al.sub.x Si.sub.y O.sub.z, where x:y is between 1 and 3 and z is between 2 and 6. Such compositions are particularly applicable to obtaining anti-static layers for photographic materials.

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Chalon sur Saone, France

Jeannine Rigola