Gypsum mixture containing hydrophobic additive and method for hydrophobing gysum

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5855667
SERIAL NO

08895461

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A gypsum mixture is disclosed which has hydrophobic additive substantially uniformly dispersed therein and which comprises gypsum, a first silane of the general formula (RO).sub.3 SiR or of the general formula (RO).sub.2 SiR.sub.2, and a second silane of the general formula (RO).sub.3 SiR' or of the general formula (RO).sub.2 SiRR', wherein each R is the same or different and represents a lower alkyl group, and R' represents a lower alkyl group which is substituted by a substituent selected from an amino, amino-lower alkyl-amino or dialkylenetriamine group. Preferably, the first silane is methyltrimethoxysilane and the second silane is N-(2-aminoethyl)-3-aminopropyltrimethoxysilane. Also disclosed is a method for preparing said gypsum mixture.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DOW CORNING LIMITEDMIDLAND, MI29

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Thomas, Bryan Barry, GB 16 81

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DOW CORNING LIMITED (1)
* 5776245 Method for hydrophobing gypsum 12 1997
 
WACKER-CHEMIE GMBH (2)
* 4835014 Method for imparting water repellency to absorbent inorganic building materials 36 1987
* 4851047 Process for preparing water-repellent articles from gypsum powder containing hydrophobic agents 15 1988
 
Wacker-Chemie (1)
* 5336715 Organopolysiloxane composition 10 1993
 
THE J.M. SMUCKER COMPANY (1)
* 5100684 Process of using silica to decrease fat absorption 9 1991
 
DOW CORNING CORPORATION (7)
* 5051129 Masonry water repellent composition 45 1990
* 5110684 Masonry water repellent 22 1990
* 5073195 Aqueous silane water repellent compositions 73 1991
* 5205860 Water repellents containing organosilicon compounds 22 1992
* 5209775 Water repellents containing organosilicon compounds 44 1992
* 5300327 Water repellent organosilicon compositions 26 1993
* 5421866 Water repellent compositions 70 1994
 
GE BAYER SILICONES GMBH & CO. KG (1)
* 4643771 Production of water-repellent moldings from plaster 37 1985
 
THORO SYSTEM PROUDCTS, INC. (1)
* 4889747 Hydrophobic expanded perlite compositions and process for preparing the same 35 1989
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
AKZO NOBEL N.V. (1)
8703874 Powder to hydrophobise and its use 0 2009
 
TIP - THE INDUSTRY PIVOT LTD. (3)
* 6932863 Gypsum product and method therefor 3 2002
* 2004/0083,927 Gypsum product and method therefor 1 2002
* 6902615 Gypsum product and method therefor 9 2003
 
DOW CORNING CORPORATION (1)
* 6106607 Composition for hydrophobing gypsum and methods for the preparation and use thereof 25 1999
 
JAMES HARDIE TECHNOLOGY LIMITED (2)
7455727 Integral water resistant fibre-cement 14 2002
7717997 Integral water resistant fibre-cement 0 2008
 
UNITED STATES GYPSUM COMPANY (6)
8070895 Water resistant cementitious article and method for preparing same 5 2007
* 2008/0190,062 Water Resistant Cementitious Article and Method for Preparing Same 14 2007
* 2009/0029,141 MAT-FACED GYPSUM BOARD AND METHOD OF MAKING THEREOF 3 2008
8329308 Cementitious article and method for preparing the same 0 2009
* 2010/0247,937 CEMENTITIOUS ARTICLE AND METHOD FOR PREPARING THE SAME 7 2009
8568544 Water resistant cementitious article and method for preparing same 1 2011
 
BAERLOCHER GMBH (3)
8529692 Hydrophobic binder mixture, and construction materials made therefrom 0 2008
* 2011/0003,925 HYDROPHOBIC BINDER MIXTURE, AND CONSTRUCTION MATERIALS MADE THEREFROM 0 2008
* 2011/0000,399 FATTY ACID SALT MIXTURE AS A HYDROPHOBING AGENT FOR CONSTRUCTION MATERIALS 1 2008
* Cited By Examiner