United States Gypsum Company

Usg Interiors, Inc.

Naser Aldabaibeh

Qinghua Li

Suman Sinha Ray

Ashish Dubey

Alfred C Li

Mark K Hemphill

Kumar C Natesaiyer

Trevor S Rische

The disclosure provides a coating composition for improving the sag resistance of a fibrous panel, the composition including 10 to 100 wt. % inorganic binder, based on the total weight of the dry coating, wherein the inorganic binder includes a borate salt and at least one of an alkali metal silicate or an alkaline earth metal silicate, and the inorganic binder is water soluble. Further provided are fibrous panels having a backing side and an opposing facing side including the coating of the disclosure, and methods of preparing same.

Borate and silicate coating for improved acoustical panel performance and methods of making same

Disclosed are an organic binder-based coating; a composite gypsum board containing face and back cover sheets, an outside surface of the back cover sheet bearing the coating; and a method of preparing composite board where the back cover sheet contains the coating on its outer surface. The coating is formed from a composition comprising an alkaline silicate, a solid filler, and optionally, a borate. An enhancing layer can also be applied to the back cover sheet.

Gypsum wallboard with enhanced fire resistance, and related coatings and methods

A gypsum product with a fortified glass fiber mat is provided in which the glass fiber mat is strengthened by crystallization of salt crystals on the glass fiber mat prior to the glass fiber mat use in the gypsum product. Methods for making a glass fiber mat saturated with salt crystals and gypsum products with the glass fiber mats are provided as well.

Gypsum products with fortified glass fiber mat

Methods for making a gypsum board provided with a latex polymer coating layer having a sufficiently low glass transition temperature, a less dense gypsum core layer, and a relatively denser layer of gypsum between the less dense gypsum core layer and the latex polymer coating layer and a gypsum board made by the method.

Methods for making gypsum boards with polymer coating and gypsum boards made by the method

Disclosed are cementitious product, as well as cementitious slurry, and method of forming the product. To reduce density in the cementitious product, foam is included in the slurry and in the method of forming the product. The slurry includes cementitious particles, water, and air bubbles such as from compressed air. Instead of using detergent chemistry at the gas/water interface of bubbles, the present invention uses a surface modifying agent for the cementitious particles in the slurry. The modified particles act to produce stable foam in the slurry. As an example mode of introduction, the surface modifier can be added (e.g., as solid or solution) directly into a bulk cementitious slurry that forms the product. As another example, the surface modifier can be added in a separate solution with water, air bubbles, and cementitious particles that serve as additive to the main cementitious slurry, where the separate solution is then added to the main cementitious slurry.

Growing community of inventors

Homer Glen, IL, United States of America

Naser Aldabaibeh