Ppg Industries, Inc.

Lloyd G Shick

Helmut Franz

James H Hanlon

A method is disclosed for providing a temporary layer of a release agent on a substrate such as glass by applying a liquid dispersion of solid particles which do not bond to the glass or form a film and evaporating the liquid to yield a layer of loosely adherent particles on the substrate surface.

Removable release agent on glass and bonding method employing same

A method is disclosed providing temporary protection of a glass surface from staining and scratches by coating the exposed surface with a soluble polymer film incorporating spacer particles of an inert material.

Soluble polymer interleaving material

A method is disclosed for protecting a substrate surface from particulate contaminants in a process using a working tool in conjunction with a working fluid, by employing as the working fluid a solution of a soluble polymer such as polyvinylpyrrolidone.

Polymer solution working fluid for finishing processes

A method for making a plastic billet particularly suitable for compression stretching by coating the plastic surface with a more extensible polymer film is disclosed.

Pressing plastic with extensible coating

A method is disclosed for improving a roughened surface of a plastic article by applying a smooth, durable polymer coating.

Plastic surface treatment

Highly efficient release surfaces on glass substrates prepared by treatment of the glass with poly alkyl hydrogen siloxane are disclosed.

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Natrona Heights, PA, United States of America

Lloyd G Shick