Paul W Reed

US Patent:

7803226, Sep 28, 2010

Filed:

Jul 29, 2005

Appl. No.:

11/192652

Inventors:

Xuming Wang - Mundelein IL, US
Qingxia Liu - Vernon Hills IL, US
Paul Reed - Kankakee IL, US
Qiang Yu - Grayslake IL, US

Assignee:

United States Gypsum Company - Chicago IL

International Classification:

C04B 28/14
C04B 11/00

US Classification:

106772, 106778, 106801, 106806

Abstract:

Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

US Patent:

7811685, Oct 12, 2010

Filed:

Nov 12, 2009

Appl. No.:

12/617114

Inventors:

Xuming Wang - Mundelein IL, US
Qingxia Liu - Vernon Hills IL, US
Paul Reed - Kankakee IL, US
Qiang Yu - Grayslake IL, US

Assignee:

United States Gypsum Company - Chicago IL

International Classification:

B32B 13/00

US Classification:

428703, 442386, 5230917, 106772, 106778

Abstract:

Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

US Patent:

7815730, Oct 19, 2010

Filed:

Jun 4, 2009

Appl. No.:

12/478114

Inventors:

Xuming Wang - Mundelein IL, US
Qingxia Liu - Vernon Hills IL, US
Paul Reed - Kankakee IL, US
Qiang Yu - Grayslake IL, US

Assignee:

United States Gypsum Company - Chicago IL

International Classification:

C04B 28/14
C04B 11/00

US Classification:

106772, 106778, 106801, 106806

Abstract:

Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

US Patent:

8070895, Dec 6, 2011

Filed:

Apr 20, 2007

Appl. No.:

11/738316

Inventors:

Dick C. Engbrecht - Arlington Heights IL, US
Qingxia Liu - Vernon Hills IL, US
Michael P. Shake - Johnsburg IL, US
Xuming Wang - Mundelein IL, US
David Paul Miller - Lindenhurst IL, US
Michael L. Bolind - Ingelside IL, US
Paul Reed - Kankakee IL, US
Donald L. Roelfs - West Burlington IA, US
Rafael Bury - Wheeling IL, US

Assignee:

United States Gypsum Company - Chicago IL

International Classification:

B29C 65/00
B32B 13/00
B32B 37/00
B32B 29/00

US Classification:

156 39, 156 41, 156 45

Abstract:

A fibrous mat-faced cementitious article comprising (a) a cementitious core, and (b) a first fibrous mat comprising polymer or mineral fibers and a hydrophobic finish on at least one surface thereof, wherein the hydrophobic finish is in contact with the cementitious core, and a method of preparing a fibrous mat-faced cementitious article, as well as a method of preparing a water-resistant cementitious article comprising (a) preparing an aqueous siloxane dispersion, wherein the dispersion comprises about 4 wt. % to about 8 wt. % siloxane, (b) combining the siloxane dispersion with a cementitious mixture to provide a cementitious slurry, (c) depositing the cementitious slurry onto a substrate, and (d) allowing the cementitious slurry to harden, thereby providing a cementitious article.

US Patent:

8133600, Mar 13, 2012

Filed:

Sep 22, 2010

Appl. No.:

12/888162

Inventors:

Xuming Wang - Mundelein IL, US
Qingxia Liu - Vernon Hills IL, US
Paul Reed - Kankakee IL, US
Qiang Yu - Grayslake IL, US

Assignee:

United States Gypsum Company - Chicago IL

International Classification:

B32B 13/00
B32B 13/08

US Classification:

428703, 106772, 106778, 106801, 106806

Abstract:

Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

US Patent:

8501074, Aug 6, 2013

Filed:

Apr 21, 2011

Appl. No.:

13/091369

Inventors:

Xuming Wang - Mundelein IL, US
Qingxin Liu - Vernon Hills IL, US
Paul Reed - Kankakee IL, US
Qiang Yu - Grayslake IL, US

Assignee:

United States Gypsum Company - Chicago IL

International Classification:

B28B 3/00

US Classification:

264333

Abstract:

Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

US Patent:

8568544, Oct 29, 2013

Filed:

Oct 28, 2011

Appl. No.:

13/283672

Inventors:

Dick C. Engbrecht - Arlington Heights IL, US
Qingxia Liu - Vernon Hills IL, US
Michael P. Shake - Johnsburg IL, US
Xuming Wang - Mundelein IL, US
David Paul Miller - Lindenhurst IL, US
Michael L. Bolind - Ingelside IL, US
Paul Reed - Kankakee IL, US
Donald L. Roelfs - West Burlington IA, US
Rafael Bury - Wheeling IL, US

Assignee:

United States Gypsum Company - Chicago IL

International Classification:

B29C 65/00
B32B 13/00
B32B 37/00
B32B 29/00

US Classification:

156 39, 156 41, 156 45

Abstract:

A fibrous mat-faced cementitious article comprising (a) a cementitious core, and (b) a first fibrous mat comprising polymer or mineral fibers and a hydrophobic finish on at least one surface thereof, wherein the hydrophobic finish is in contact with the cementitious core, and a method of preparing a fibrous mat-faced cementitious article, as well as a method of preparing a water-resistant cementitious article comprising (a) preparing an aqueous siloxane dispersion, wherein the dispersion comprises about 4 wt. % to about 8 wt. % siloxane, (b) combining the siloxane dispersion with a cementitious mixture to provide a cementitious slurry, (c) depositing the cementitious slurry onto a substrate, and (d) allowing the cementitious slurry to harden, thereby providing a cementitious article.