Polyarylate Polymer Coatings

Polyarylate polymer is deposited on a substrate, according to a manufacturing process that ensures a low voltage adhesive coating. A coating is an advantage for use in many industrial applications of great practical importance.

The present invention relates polyarylate polymers and, more particularly, a method of forming a polyarylate polymer coating on a substrate and an article with such a coating.

In a wide range of applications of practical importance is the need for covering a substrate with a layer of material that has the properties required. Sometimes these needs can be met by gluing or otherwise secure a sheet of material on the substrate. But for many important commercial applications, this approach is not entirely satisfactory. Often, a layer more consistent and more adherent than that provided by a coating material applied is required.

Polyarylate polymers are a type of plastic it is known that a number of advantageous features such as excellent electrical, mechanical, thermal and flammability properties. The relative ease with which these materials can be injection molded or extruded led to its use in a variety of industrial applications.

One of the most commercial polyarylate polymer surface is not covered in the reaction chamber of the plasma-assisted etching equipment, as set forth in copending U.S. patent application commonly linked to Ser JM Moran name. N. 295,839, filed Aug. 24, 1981 now U.S. Pat. Ben 4,397,724. Graphically, at least part of the surfaces in the immediate vicinity of the part to consolidate the room is covered with a sheet of polyarylate polymer. The contamination of the work piece during the etching process greatly reduced, as detailed above the application.

In practice, the use of a sheet of polyarylate polymer material attached to a substrate in an etching chamber may lead to buckling or twisting of the polymer material. In addition, some cracking of the material, possibly caused by stresses introduced into the material during the molding or extrusion occurs. And in many cases it is difficult or impossible to place a sheet of polymer in the polyarylate a reliable and consistent adherent to curved surfaces or relatively inaccessible in the etching chamber.

Taking account of the activities listed above are direct employees of the arts initiative aims to polyarylate polymer layer over layer of platforms. But right now, no completely satisfactory procedure for a polymer coating on the substrate is determined. It was noted that if this procedure could be developed, would enable the achievement of polyarylate polymer-coated substrate with improved properties, such as a better grip, better compliance and low stress. Thus, the development of these coatings for use in etching chambers, and various other industrial processes, is very popular destination.

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