General Electric Company

Anatoli Kogan

Lawrence Bernard Kool

Richard DiDomizio

William Randall Thompson

Brian Stephen Noel

David Carr

Gary William Yeager

Stephen Francis Rutkowski

Hua Wang

Paul Steven Svec

Michael Francis Gigliotti, Jr

Michael Francis X Gigliotti, Jr

Sharon Oba

Jared Paul Ray

Jr Michael Francis X Gigliotti

A composition is provided. The composition may include a reaction product of a first composition having two or more anhydride moieties, a second composition having two or more hydroxyl moieties, and a third composition having at least one aziridine moiety. A method for forming a membrane from the composition is provided. A membrane formed from the composition is provided. Devices that include the membrane are provided, also.

Composition, membrane, and associated method

A slurry coating composition is described, which is very useful for enriching the surface region of a metal-based substrate with aluminum. The composition includes colloidal silica and particles of an aluminum-based powder, and is substantially free of hexavalent chromium. The slurry may include colloidal silica and an alloy of aluminum and silicon. Alternatively, the slurry includes colloidal silica, aluminum or aluminum-silicon, and an organic stabilizer such as glycerol. The slurry exhibits good thermal and chemical stability for extended periods of time, making it very useful for industrial applications. Related methods and articles are also described.

Aluminizing slurry compositions free of hexavalent chromium, and related methods and articles

An organic coating composition is described, which can be used to enrich the surface region of a metal-based substrate with aluminum. The composition comprises an aluminum-based powder and at least one organic resin, e.g., alkyds, epoxies, or silicone materials. At least some of the aluminum-based powder is in the form of substantially spherical powder particles. The coating composition is substantially free of hexavalent chromium. It can be applied to the substrate by a variety of techniques, such as spraying. It is then heat-treated, to cause diffusion of aluminum into the surface region of the substrate, e.g., a turbine engine component. The composition exhibits good thermal and chemical stability for extended periods of time. Related articles are also described.

Organic coating compositions for aluminizing metal substrates, and related methods and articles

A solvent-resistant polymeric membrane comprising a solvent-inert polymer having a solubility parameter greater than 18 (J/cm), such as a polyketone, a polyether ketone, polyarylene ether ketone ketone, a polyimide, a polyetherimide, or a polyphenylene sulfide, is described. The solvent-resistant polymeric membrane can be prepared by methods in which solvent-inert polymers form a solution at room temperature.

Solvent-resistant membranes from solvent-inert polyimides and polyketones

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Clifton Park, NY, United States of America

Anatoli Kogan