Coal Industry (patents) Limited

Angela M Carswell

Joseph G Robinson

David I Barnes

This invention relates to a catalyst for use in the direct conversion of synthesis gas to olefinic hydrocarbons in good yield. It also relates to a process for producing the catalyst. The catalyst comprises a highly porous amorphous silica support on which is deposited one or more monolayers of silica. The catalyst is then impregnated with a transition metal. The monolayer of silica is formed by the hydrolysis of a compound such as ethyl orthosilicate while it is adsorbed onto the support.

Amorphous silica-based catalyst and process for its production

This invention relates to thermally stable resins and provides such a resin made from cheaply available coal-derived materials, whereas presently available resins are made from increasingly expensive oil-derived materials. The resin comprises the condensation product of a reaction between an aromatic diamine and a phenanthrene-formaldehyde reaction product, which product has been oxidized to produce keto groups bridging the phenanthrene moieties and carboxy groups. The condensation product is a poly-(amine-imide). The invention also includes a method of making the resin and varnishes containing the resin. The resin will find use for instance as a high temperature insulator or in glass or asbestos laminates in compressor blades.

Keto/polycarboxy containing resin

According to the present invention, there is provided an improved method of producing a poly-(amide-imide) resin comprising the steps of:

Method of producing an improved poly-(amide-imide) resin by reacting a

This invention relates to thermally stable resins and provides such a resin made from cheaply available coal-derived materials, whereas presently available resins are made from increasingly expensive oil-derived materials. The resin comprises the condensation product of a reaction between an aromatic diamine and a phenanthrene-formaldehyde reaction product, which product has been oxidized to produce keto groups bridging the phenanthrene moieties and carboxy groups. The condensation product is a poly-(amide-imide). The invention also includes a method of making the resin and varnishes containing the resin. The resin will find use for instance as a high temperature insulator or in glass or asbestos laminates in compressor blades.

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Longhope, United Kingdom

Angela M Carswell