United States Gypsum Company

Usg Interiors, Inc.

Wenqi Luan

Weixin David Song

Qiang Yu

Alfred C Li

Srinivas Veeramasuneni

Martin W Brown

William A Frank

Scott A Bogen

Carlos Figi

Alfred Li

Qingxia Liu

Yufeng Xu

Qing Claire Yu

Matthew T Langdon

Mike Hill

Tanya Keller

Martin Brown

Veeramasuneni Sirnivas

A reduced weight, reduced density gypsum panel that includes high expansion vermiculite with fire resistance capabilities that are at least comparable to (if not better than) commercial fire rated gypsum panels with a much greater gypsum content, weight and density.

Lightweight, reduced density fire rated gypsum panels

A method of preparing a fibrous panel including surface treating a mineral wool with a water repellent agent to provide a water-repellent surface treated mineral wool, admixing the water-repellent surface-treated mineral wool with water to provide a slurry, and dewatering and drying the slurry to provide a fibrous panel. A method of preparing a mineral wool having a surface treated with a water repellent agent including contacting a water repellent agent emulsion with a mineral wool and drying the mineral wool, and a method of preparing a water-repellent surface-treated fibrous panel including mineral wool having a surface pre-treated with a water repellent agent are also provided.

Wool surface treated with hydrophobic agent and acoustic panels made therefrom

An improved water-resistant gypsum product prepared with a high-viscosity siloxane is provided. A fuel-efficient method for making the product and reducing the amount of siloxane dust released is provided as well.

Siloxane compositions and methods for reducing VOC and siloxane dust

An acoustical tile having a wet laid mineral fiber basemat, a non-woven porous fiberglass veil adhered to the basemat and covered with a light reflecting air permeable coating, at least 90% of the weight of the basemat comprising mineral wool and binder, a weight of the binder being less than 1/11 of the weight of the mineral fiber, the basemat having a density of between about 11.4 and about 14.2 lbs/cubic foot, the mineral fiber having an average diameter of between 4.5 and 8.3 microns, the composite of the basemat, veil and coating exhibiting good NRC and CAC performance values.

Mineral fiber based ceiling tile

The disclosure provides a slag wool composition including about 60 to about 80 wt. % blast furnace slag and about 20 to about 40 wt. % basalt, based on the total weight of the inorganic raw materials, wherein the composition has an A/B ratio in a range of about 1.20 to about 1.70. The disclosure further provides a slag wool produced using the slag wool composition of the disclosure, wherein the slag wool has a fiber diameter in a range of about 4.0 microns to about 10.0 microns. The disclosure further provides a method for the manufacture of slag wool.

Large diameter slag wool, composition and method of making same

A method of preparing a reduced weight, reduced density gypsum panel that includes high expansion vermiculite with fire resistance that meet or exceed one or more industry standard fire tests.

Method of making lightweight, reduced density fire rated gypsum panels

A method for calcining gypsum in a pressurized reactor by injecting combustion gases and air into the pressurized reactor to create a fluidized bed of gypsum, and heating the fluidized bed of gypsum in the pressurized reactor sufficiently to form a calcined hemihydrate.

Method and apparatus for pressurized calcination of gypsum

A method for providing effective mercury release control during gypsum calcination is disclosed. The method comprises providing a reactor and gypsum containing mercury; providing a mercury sorbent, such as activated carbon and/or derivatives thereof in the reactor; and calcining the gypsum in the reactor to form stucco. The mercury contaminant present in the gypsum is sorbed by the mercury sorbent during the calcination process. The mercury content of the stucco is substantially similar in amount to the mercury content of the uncalcined gypsum.

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Hawthorn Woods, IL, United States of America

Wenqi Luan