US Patent No: 5,855,667

Number of patents in Portfolio can not be more than 2000

Gypsum mixture containing hydrophobic additive and method for hydrophobing gysum

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

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.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
DOW CORNING LIMITEDMIDLAND, MI139

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Thomas, Bryan Barry, GB 17 45

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DOW CORNING CORPORATION (7)
5,051,129 Masonry water repellent composition 41 1990
5,110,684 Masonry water repellent 21 1990
5,073,195 Aqueous silane water repellent compositions 68 1991
5,205,860 Water repellents containing organosilicon compounds 22 1992
5,209,775 Water repellents containing organosilicon compounds 39 1992
5,300,327 Water repellent organosilicon compositions 24 1993
5,421,866 Water repellent compositions 60 1994
 
WACKER-CHEMIE GMBH (2)
4,835,014 Method for imparting water repellency to absorbent inorganic building materials 21 1987
4,851,047 Process for preparing water-repellent articles from gypsum powder containing hydrophobic agents 13 1988
 
DOW CORNING LIMITED (1)
5,776,245 Method for hydrophobing gypsum 12 1997
 
GE BAYER SILICONES GMBH & CO. KG (1)
4,643,771 Production of water-repellent moldings from plaster 36 1985
 
J.M. SMUCKER COMPANY, THE (1)
5,100,684 Process of using silica to decrease fat absorption 9 1991
 
THORO SYSTEM PROUDCTS, INC. (1)
4,889,747 Hydrophobic expanded perlite compositions and process for preparing the same 31 1989
 
Wacker-Chemie (1)
5,336,715 Organopolysiloxane composition 10 1993

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
UNITED STATES GYPSUM COMPANY (3)
8,070,895 Water resistant cementitious article and method for preparing same 3 2007
8,329,308 Cementitious article and method for preparing the same 0 2009
8,568,544 Water resistant cementitious article and method for preparing same 0 2011
 
HA TECHNOLOGIES LTD. (2)
6,932,863 Gypsum product and method therefor 3 2002
6,902,615 Gypsum product and method therefor 8 2003
 
JAMES HARDIE TECHNOLOGY LIMITED (2)
7,455,727 Integral water resistant fibre-cement 13 2002
7,717,997 Integral water resistant fibre-cement 0 2008
 
AKZO NOBEL N.V. (1)
8,703,874 Powder to hydrophobise and its use 0 2009
 
BAERLOCHER GMBH (1)
8,529,692 Hydrophobic binder mixture, and construction materials made therefrom 0 2008
 
DOW CORNING CORPORATION (1)
6,106,607 Composition for hydrophobing gypsum and methods for the preparation and use thereof 24 1999