Momentive Specialty Chemicals Inc.

Hexion Specialty Chemicals, Inc.

Hexion Research Belgium Sa

Thomas Michael Donlon

Steven Joseph Wantling

Bonnie Zepka

Michael A Greno

Bonnie S Zepka

The present invention is directed to a wax formulation for use in lignocellulosic products, which impart improved properties such as dimensional stability when the products are exposed to moisture. The wax formulations include a wax and a surface tension/interfacial tension reducing agent comprising one or more of a fluorinated compound having two to six carbon atoms, an alkylphenol alkoxylate or an ethoxylated acetylenic diol.

Wax formulations for lignocellulosic products, methods of their manufacture and products formed therefrom

A method is provided which uses an improved emulsion to imparting water-resistance to gypsum products. In one embodiment, gypsum products comprise calcium sulfate dihydrate and an emulsion which comprises a saponified wax, a nonsaponifiable wax, an alkyl phenol, a surfactant/dispersant salt of polynaphthalenesulfonic acid, and carboxymethylcellulose. Optionally, the emulsions may contain a preservative, e.g., a biocide (mildewcide, fungicide, etc.). These gypsum products resist the uptake of water and therefore resist biological infestation without addition of a preservative.

Gypsum products and method for their manufacture

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Louisville, KY, United States of America

Thomas Michael Donlon