Patents Assigned to W. R. Grace & Co.-Conn.
  • Defoamers for hydratable cementitious compositions
    Patent number: 8187376
    Abstract: The present invention discloses additive compositions, cementitious compositions, and methods for controlling air in cementitious compositions, wherein a polyalkoxylated polyalkylene polyamine defoamer is deployed in combination with one or more air-entraining agents, such as higher alkanolamines, water-reducing agents including oxyalkylene-containing superplasticizers, or other air entraining agents.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: May 29, 2012
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Lawrence L. Kuo
  • Concrete or mortar admixture composition
    Patent number: 8168701
    Abstract: A concrete admixture composition concurrently using (A) a polycarboxylic acid type water-reducing agent for concrete, (B) a hydroxycarboxylic acid type water-reducing agent for concrete, and (C) a polysaccharide type thickening agent is offered, with the view to manufacture a high-performance and multi-functional concrete excelling in high fluidity, freshness retention, early strength, pumpability, material segregation resistance and anti-washout properties under water.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: May 1, 2012
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Hideo Koyata, Miho Miyakawa
  • Sulfur tolerant alumina catalyst support
    Patent number: 8158257
    Abstract: The present invention is directed to an improved catalyst support and to the resultant catalyst suitable for treating exhaust products from internal combustion engines, especially diesel engines. The support of the present invention is a structure comprising alumina core particulate having high porosity and surface area, wherein the structure has from about 1 to about 8 weight percent silica in the form of cladding on the surface area of said alumina core. The resultant support has a sulfur tolerance efficiency (?) of at least 1000 ?g/m2.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: April 17, 2012
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Manoj Mukund Koranne, James Neil Pryor
  • Method for retarding the setting of mortar and concrete surfaces
    Patent number: 8097296
    Abstract: An exemplary method for set retarding the surface of a mortar or concrete material, comprising applying to the surface of a mortar or concrete, or to the inner surface of a mold for forming the mortar or concrete, a hot melt coating composition which is heated to assume a flowable or sprayable form, and allowing the hot melt coating composition to cool to ambient temperature whereby the composition forms a solidified membrane, and thereafter removing the membrane. Preferably, the hot melt coating composition contains at least one agent operative to retard the setting of the mortar or concrete, and optional finely divided particulate materials, light-reflective pigments, or mixtures thereof.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: January 17, 2012
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Dany Vincent, Philippe Antoine
  • Cement additive for stucco applications
    Patent number: 8097666
    Abstract: An additive composition, a cement composition, and method for modifying rheology of an uncured masonry cement, comprising the use of at least one extra-cellular biopolymer, at least one anionic surfactant, and at least one cationic or amphoteric surfactant. Preferably, the biopolymer and surfactants are incorporated into the cement by incorporating the components into the grinding of clinker as part of the manufacture of the cement. Masonry cements produced by the invention have excellent workability, particularly when coarse sands are employed.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: January 17, 2012
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Michael B. Macklin, Mark A. Franciosi, Leslie A. Jardine, Byong-wa Chun
  • Gasoline sulfur reduction catalyst for fluid catalytic cracking process
    Patent number: 8084383
    Abstract: The present invention is directed to certain catalyst compositions and processes that are capable of reducing sulfur compounds normally found as part of the gasoline fraction streams of fluid catalytic cracking processes. The present invention is a cracking catalyst composition comprising a zeolite in combination with a Lewis Acid containing component, wherein the cracking catalyst composition comprises 0.2% Na2O or less. It has been found that sulfur compounds in hydrocarbon feeds to fluid catalytic cracking processes can be reduced by at least 15% compared to the same composition, which does not comprise the aforementioned Lewis Acid containing component.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: December 27, 2011
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Ruizhong Hu, Xinjin Zhao, Richard Franklin Wormsbecher, Michael Scott Ziebarth
  • Skid resistant surfaces
    Patent number: 8079184
    Abstract: Pedestrian trafficable skid-resistant flexible articles (24) are described. These articles (24) include a flexible substrate (17) having a non-skid coating that may be either a pressure-sensitive adhesive (13) or a highly- filled, textured binder. These articles may be applied to trafficable surfaces such as roof and floors. Articles in the form of roof underlayments having a skid-resistant surface are described in particular.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: December 20, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Robert A. Wiercinski, David P. Zalanowski, Paul J. Westgate, Felek Jachimowicz
  • Robust Polycarboxylate Containing Ether Linkages For Milling Preparation Of Cementitious Materials
    Publication number: 20110306704
    Abstract: The present invention discloses compositions and methods wherein polycarboxylate comb polymers are used as grinding additives. The comb polymers contain a carbon-containing backbone and pendant groups wherein oxyalkylene pendant groups contain one or more ether linkage groups for providing robustness to the polymer for resisting degradation during grinding and hence sustaining workability and strength of hydratable cementitious materials, such as cements, pozzolans, limestone, and other cementitious materials.
    Type: Application
    Filed: January 15, 2010
    Publication date: December 15, 2011
    Applicants: NIPPON SHOKUBAI CO., LTD., W.R. GRACE & CO.-CONN.
    Inventors: Josephine Cheung, Denise Silva, Byong-Wa Chun, Masahiro Sato
  • Sulfur tolerant alumina catalyst support
    Patent number: 8076263
    Abstract: The present invention is directed to an improved catalyst support and to the resultant catalyst suitable for treating exhaust products from internal combustion engines, especially diesel engines. The support of the present invention is a structure comprising alumina core particulate having high porosity and surface area, wherein the structure has from about 1 to about 40 weight percent silica in the form of cladding on the surface area of said alumina core. The resultant support has a normalized sulfur uptake (NSU) of up to 15 ?g/m2.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: December 13, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Manoj Mukund Koranne, James Neil Pryor, David Monroe Chapman, Rasto Brezny
  • Slump retention in cementitious compositions
    Patent number: 8070875
    Abstract: The present invention relates to dispersants such as superplasticizers for hydratable cementitious compositions, and more particularly to methods for achieving variable degrees of longer slump life in concrete and mortar without loss of stability. This is achieved by using two admixture systems. The first admixture composition has multi-components for achieving initial-slump-enhancement, later-slump-retention, and limiting initial slump. The second admixture composition has the later-slump-enhancing component. Alternatively, conventional water reducers or superplasticizers can be employed initially, followed by the later-slump-enhancing admixture composition.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: December 6, 2011
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: Ara A. Jeknavorian, Hideo Koyata, Darrick B. McGuire, Ivana Jovanovic
  • SYSTEM AND PROCESS FOR INJECTING CATALYST AND/OR ADDITIVES INTO A FLUIDIZED CATALYTIC CRACKING UNIT
    Publication number: 20110284588
    Abstract: A preferred embodiment of a system for loading catalyst and/or additives into a fluidized catalytic cracking unit includes a bin for storing at least one of the catalyst and/or additives, and a loading unit in fluid communication with the storage bin and the fluidized catalytic cracking unit on a selective basis. The loading unit is capable of being evacuated so that a resulting vacuum within the loading unit draws the catalyst and/or additive from the bin. The loading unit is also capable of being pressurized so that the catalyst and/or additive is transferred from the loading unit to the fluidized catalytic cracking unit.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 24, 2011
    Applicant: W. R. Grace & Co.-Conn.
    Inventors: George Yaluris, Lenny Lee Albin, Alfred Ferdinand Jordan
  • SYSTEM AND PROCESS FOR INJECTING CATALYST AND/OR ADDITIVES INTO A FLUIDIZED CATALYTIC CRACKING UNIT
    Publication number: 20110280769
    Abstract: A preferred embodiment of a system for loading catalyst and/or additives into a fluidized catalytic cracking unit includes a bin for storing at least one of the catalyst and/or additives, and a loading unit in fluid communication with the storage bin and the fluidized catalytic cracking unit on a selective basis. The loading unit is capable of being evacuated so that a resulting vacuum within the loading unit draws the catalyst and/or additive from the bin. The loading unit is also capable of being pressurized so that the catalyst and/or additive is transferred from the loading unit to the fluidized catalytic cracking unit.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 17, 2011
    Applicant: W.R. Grace & Co. -Conn.
    Inventors: George Yaluris, Lenny Lee Albin, Alfred Ferdinand Jordan
  • PROCESSES AND SYSTEMS FOR TRANSFERRING PARTICULATE SUBSTANCES FROM CONTAINERS
    Publication number: 20110278330
    Abstract: Preferred processes are provided for unloading a particulate substance from a container using a cover system comprising a cover and a wand extending through the cover. The processes can include installing the cover system on the container so that the cover mates with the container and the wand extends into the particulate substance, connecting a pipe or a hose to the wand, and drawing the particulate substance through the wand and the pipe or hose.
    Type: Application
    Filed: July 27, 2011
    Publication date: November 17, 2011
    Applicant: W. R. Grace & Co.-Conn.
    Inventors: Alfred F. Jordan, Lenny L. Albin, SR., Charles A. Cross
  • PROCESSES AND SYSTEMS FOR TRANSFERRING PARTICULATE SUBSTANCES FROM CONTAINERS
    Publication number: 20110277876
    Abstract: Preferred processes are provided for unloading a particulate substance from a container using a cover system comprising a cover and a wand extending through the cover. The processes can include installing the cover system on the container so that the cover mates with the container and the wand extends into the particulate substance, connecting a pipe or a hose to the wand, and drawing the particulate substance through the wand and the pipe or hose.
    Type: Application
    Filed: July 27, 2011
    Publication date: November 17, 2011
    Applicant: W. R. GRACE & Co.-Conn.
    Inventors: Alfred F. Jordan, Lenny L. Albin, SR., Charles A. Cross
  • Phosphate-containing polycarboxylate polymer dispersants
    Patent number: 8058377
    Abstract: Phosphate-containing polycarboxylate polymer dispersant compositions of the invention comprise a polymer made from polyoxyalkylene groups, acrylic acid groups, mono-ester groups, and optionally di-ester and tri-ester groups, all in specific molar ratios. The polymer dispersants of the invention achieve quick mix-in dispersibility, particularly within hydratable cementitious compositions such as concrete, in comparison with polycarboxylate polymer dispersants that do not contain phosphate groups, while having improved initial slump as well as slump retention compared to phosphate-containing polymers of the prior art.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: November 15, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Izabela Goc-Maciejewska, Byong-wa Chun, Piotr Krzyzanowski
  • LOW SMALL MESOPOROUS PEAK CRACKING CATALYST AND METHOD OF USING
    Publication number: 20110224068
    Abstract: This invention relates to the composition, method of making and use of a fluidized catalytic cracking (“FCC”) catalyst that is comprised of a new Y zeolite which exhibits an exceptionally low small mesoporous peak around the 40 ? (angstrom) range as determined by nitrogen adsorption measurements. FCC catalysts made from this new zeolite exhibit improved rates of heavy oil cracking heavy oil bottoms conversions and gasoline conversions. The fluidized catalytic cracking catalysts herein are particularly useful in fluidized catalytic cracking (“FCC”) processes for conversion of heavy hydrocarbon feedstocks such as gas oils and vacuum tower bottoms.
    Type: Application
    Filed: February 17, 2011
    Publication date: September 15, 2011
    Applicant: W.R. Grace & Co.-Conn.
    Inventors: Edward T. Habib, JR., Ruizhong Hu, Terry G. Roberie, Jianxin Jason Wu, William A. Wachter, Colin L. Beswick
  • Processes and systems for transferring particulate substances from containers
    Patent number: 8016000
    Abstract: Preferred processes are provided for unloading a particulate substance from a container using a cover system comprising a cover and a wand extending through the cover. The processes can include installing the cover system on the container so that the cover mates with the container and the wand extends into the particulate substance, connecting a pipe or a hose to the wand, and drawing the particulate substance through the wand and the pipe or hose.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: September 13, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Alfred F. Jordan, Lenny L. Albin, Sr., Charles A. Cross
  • Waterproofing Membrane
    Publication number: 20110217528
    Abstract: Disclosed are waterproofing membranes comprising the following laminated layers: layer A comprising a water-proofing adhesive; layer B comprising a carrier sheet; layer C comprising a releasable bonding material; and layer D comprising a protective coating; wherein (i) the laminated layers are arranged in the sequential order A-B-C-D; or (ii) the laminated layers are arranged in the sequential order B-C-D-A; or (iii) the laminated layers are arranged in the sequential order C-D-A-B. The membrane does not include a removable release sheet that is typically used to prevent the adhesive from adhering to the carrier sheet or other portion of the membrane when the membrane is rolled up. Also disclosed is a method of making the aforementioned membrane. Preferably, layer C will comprise a water soluble polymer, an alkali soluble polymer, or a homopolymer or copolymer of polyvinyl acetate.
    Type: Application
    Filed: October 20, 2009
    Publication date: September 8, 2011
    Applicant: W.R. GRACE & CO.-CONN.
    Inventors: Robert A. Wiercinski, Anandakumar Ranganathan
  • System and process for injecting catalyst and/or additives into a fluidized catalytic cracking unit
    Patent number: 8012422
    Abstract: A preferred embodiment of a system for loading catalyst and/or additives into a fluidized catalytic cracking unit includes a bin for storing at least one of the catalyst and/or additives, and a loading unit in fluid communication with the storage bin and the fluidized catalytic cracking unit on a selective basis. The loading unit is capable of being evacuated so that a resulting vacuum within the loading unit draws the catalyst and/or additive from the bin. The loading unit is also capable of being pressurized so that the catalyst and/or additive is transferred from the loading unit to the fluidized catalytic cracking unit.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: September 6, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: George Yaluris, Lenny Lee Albin, Alfred Ferdinand Jordan
  • SYSTEM AND PROCESS FOR INJECTING CATALYST AND/OR ADDITIVES INTO A FLUIDIZED CATALYTIC CRACKING UNIT
    Publication number: 20110203970
    Abstract: Systems for loading catalyst and/or additives into a fluidized catalytic cracking unit are disclosed. Methods of making and using the systems are also disclosed.
    Type: Application
    Filed: March 16, 2011
    Publication date: August 25, 2011
    Applicant: W.R. Grace & Co.-Conn.
    Inventor: Lenny Lee Albin