Water resistant cementitious article and method for preparing same

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United States of America Patent

PATENT NO 8568544
APP PUB NO 20120040168A1
SERIAL NO

13283672

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
UNITED STATES GYPSUM COMPANYCHICAGO IL 60661-3676

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bolind, Michael L Ingelside, US 9 148
Bury, Rafael Wheeling, US 21 245
Engbrecht, Dick C Arlington Heights, US 6 230
Liu, Qingxia Vernon Hills, US 43 1466
Miller, David Paul Lindenhurst, US 30 763
Reed, Paul Kankakee, US 27 1363
Roelfs, Donald L West Burlington, US 4 176
Shake, Michael P Johnsburg, US 38 1002
Wang, Xuming Mundelein, US 27 310

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