Ppg Industries, Inc.

Paul F Duffer

Helmut Franz

Joseph D Kelly

James H Hanlon

A method is disclosed for applying a powdered interleaving material to a glass surface in the form of an aqueous composition comprising particulate interleaving material dispersed in atomized water.

Method of applying interleaving material to glass sheets

A method and composition utilizing porous particulate interleaving material treated with a strong organic acid are disclosed to reduce staining of stacked glass sheets.

Acidified powdered interleaving

A method is disclosed for applying a powdered interleaving material to a glass surface in the form of an aqueous slurry.

A method is disclosed for protecting glass surfaces in a stack of glass sheets by treating the surfaces with a stain-inhibiting organic hydroxy acid and separating adjacent surfaces with an interleaving material.

Two step interleaving method

A method is disclosed for protecting glass surfaces in a stack of glass sheets by treating the surfaces with a mixture of stain-inhibiting organic acids which crystallize on the glass, and separating adjacent surfaces with an interleaving material.

Mixed acid stain inhibitor

A method is disclosed for protecting glass surfaces in a stack of glass sheets by treating the surfaces with an organotin compound and separating adjacent surfaces with an interleaving material.

Organotin surface treatment and interleaving material for glass sheets

A method is disclosed for making dimethyltin difluoride by reacting dimethyltin dichloride with an alkali metal or ammonium fluoride salt.

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Creighton, PA, United States of America

Paul F Duffer