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Assignee: W. R. Grace & Co.


Location: NewYork, NY
No. of patents: 568

1                      
NumberTitleIssue Date
6500520Particle coated bonding systems for hydratable cementitious composition casting and methods for making same
Coated articles, methods for making such articles, and waterproofing systems incorporating these. An exemplary coated article comprises a body with surface coating of inorganic particles reactive with hydroxide generated from hydration of concrete or mort...
12/31/2002
6352952Admixture and method for optimizing addition of EO/PO superplasticizer to concrete containing smectite clay-containing aggregates
In the preparation of aqueous cement compositions containing a plasticizer, such as an EO/PO polymer-containing plasticizer, or EO/PO comb polymer-containing plasticizer, and further containing clay, such as a smectite clay, which expands when in contact ...
03/05/2002
6348093Basic-medium-soluble packaging material for use in castable cementitious composites
Exemplary packaging of the invention can be introduced in a sealed form directly into a mixer, whereby, upon agitation of the mixer, a cemenititous binder, an admixture or admixtures, and/or fibers can be released to make or modify, in the mixer, a castab...
02/19/2002
6274210Oxygen scavenging compositions with low migration
An improved oxygen scavenging composition and packaging container formed therefrom is disclosed. The container is suitable for storage of oxygen sensitive materials and has as part of its exposed interior surface a composition composed of a polymeric matr...
08/14/2001
6129834NOx reduction compositions for use in FCC processes
Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Gr...
10/10/2000
6086786Oxygen scavenging metal-loaded ion-exchange composition
An oxygen scavenging composition composed of a carrier material and a metal-loaded cationic exchange material having the metal in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The ...
07/11/2000
6017531Hydrophilic composition containing protease produced by Vibrio
Hydrophillic compositions and methods of use are provided for debriding and wound healing applications. The compositions contain certain proteases produced by microorganisms of the genus Vibrio....
01/25/2000
5993688Oxygen scavenging metal-loaded ion-exchange compositions
An oxygen scavenging composition composed of a carrier material and a metal-loaded cationic exchange material having the metal in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The ...
11/30/1999
5941037Oxygen scavenging hydrotalcite and compositions containing same
An oxygen scavenging agent and compositions capable of providing good oxygen absorption capabilities which contain said agent, wherein the agent is a modified anionic hydrotalcite particulate material....
08/24/1999
5912037Method of removing proteins from beverages using crosslinked tannin/inorganic oxide composites
Epoxy-polymerized tannin/inorganic oxide composite particles are obtained by polymerizing the tannin with a polyepoxy crosslinking agent in situ on inorganic oxide particles. The compositions of the invention are capable of achieving the performance of ta...
06/15/1999
5753034Composition and method to remove asbestos
A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of a hexafluorosilicate salt, and free of or having only small amount...
05/19/1998
5749927Continuous process to produce lithium-polymer batteries
Solid polymer electrolytes are extruded with active electrode material in a continuous, one-step process to form composite electrolyte-electrodes ready for assembly into battery cells. The composite electrolyte-electrode sheets are extruded onto current c...
05/12/1998
5525210Sulfur reduction in FCC gasoline
Zeolite cracking catalyst compositions and additives that contain a Lewis acid supported on alumina are useful to process hydrocarbon feedstocks. The compositions are especially useful for the production of reduced sulfur gasoline....
06/11/1996
5520332Method and apparatus for spray applying fireproofing compositions
A method and apparatus for controlling the flow rate of relatively low viscosity fluids, such as accelerators, in viscous, hydraulic slurry spray application systems. An adjustable accelerator flow control system which regulates excess air pressure suppli...
05/28/1996
5492742Packages and containers comprising salicylic acid chelates as oxygen scavengers
An oxygen scavenging packages and containers which comprise a composition of a carrier, such as a polymer, which is permeable to both oxygen and water or water vapor and an oxygen scavenging compound of an organic compound or salt thereof dispersed relati...
02/20/1996
5362323Cement admixture composition
Cement admixture compositions formed from alkenyl ether/maleic anhydride copolymers having specific molecular structures have been found to impart a high degree of slump loss over a sustained period of time while not causing any significant set retardatio...
11/08/1994
5298221Inhibition of scale formation and corrosion by sulfonated organophosphonates
A method is disclosed for inhibiting or preventing the formation of scale and corrosion on surfaces in contact with an aqueous system comprising adding to the system an amount effective to inhibit scale formation of a sulfonated organophosphonate compound...
03/29/1994
5281491Battery separator
The present invention is directed to a multi-ply unfilled microporous sheet product composed of at least one first ply and at least one second ply which are, respectively, formed from polymeric compositions having different rheological properties and to a...
01/25/1994
5281678Preparation of unsaturated epoxy ester resin and carboxylated unsaturated epoxy ester resin and photosensitive composition comprising the same
A method of preparing an unsaturated ester resin having improved storage stability is disclosed. An epoxy compound and polymerizable unsaturated monocarboxylic acid are reacted in the presence of a trivalent organic phosphorous catalyst. The catalyst is s...
01/25/1994
5240682Reinforced corrugated thin metal foil strip useful in a catalytic converter core, a catalytic converter core containing said strip and an electrically heatable catalytic converter containing said core
There is provided an improved reinforced corrugated thin stainless steel strip in which either or both of the longitudinal edges are overfolded to increase the thickness and stiffness of the foil to better resist the tendency to failure in a severe hot-sh...
08/31/1993
5225062Electrophoretic gel for separation and recovery of substances and its use
An electrophoretic gel comprising at least one crosslinked temperature-responsive polymeric compound having an LCST is disclosed. A method of separating and recovering substances involves conducting the electrophoresis of a sample containing substances to...
07/06/1993
5211974Containers and compositions for sealing them
A container system for beer formed of a bottle body, a cap and sealing gasket formed of a blend of butyl rubber and one or more thermoplastic polymers. Preferably, the butyl rubber is present in an amount of from about 20 to about 60% by weight of the com...
05/18/1993
5194258Production of enhanced biocontrol agents
A method is disclosed for enhancing the biocontrol effect of microbial biocontrol agents used to combat fungal plant disease. The microbial biocontrol agent is fermented, formulated, or packaged in the presence of deactivated target pathogen such as a cul...
03/16/1993
5168344Ceramic electronic package design
Hermetic package designs for HDMI substrates are discussed. The designs for a hermetically sealed, perimeter-leaded package may have the following features: a) a flat monolithic dielectric base, the base having a flat upper surface and a flat lower surfac...
12/01/1992
5167866Control of corrosion in aqueous systems using certain phosphonomethyl amine oxides
This invention relates to controlling corrosion in aqueous systems and more particularly to using certain calcium insensitive phosphonomethyl amine oxide compounds. The compounds of this invention are water soluble phosphonomethyl amine oxides having at l...
12/01/1992
5167252High temperature control damper with sealing flange
A high temperature control damper for use in an air flotation dryer with built-in afterburner or any other high temperature environment. Two damper blades are mounted between high temperature bearings and rotate in an insulated housing. The inner ends of ...
12/01/1992
5167886Hot pressing densification aid for alumina
A boron compound, capable of forming boron oxide on hot pressing in an oxygen-containing atmosphere, is used as a densification aid for hot pressing of alumina-containing ceramics in oxygen-containing atmospheres. The boron compound may be incorporated in...
12/01/1992
5149682Manufacturing method for superconducting ceramics and products thereof
Superior homogeneity in ceramic materials is achieved by reacting certain soluble metal salts with quaternary ammonium carbonates to form co-precipitated metal carbonates. The precipitate can be recovered and processed to make superconductors. For example...
09/22/1992
5102850Catalyst supports having promoter oxide gradient, resulting catalyst and method of making the supports
Catalysts which are suitable for auto exhaust use are made with a promoter oxide that is deposited in a concentration gradient. A solution of the promoter oxide precursor, e.g., cerous nitrate solution, is impreganted uniformly into the pore structure of ...
04/07/1992
5099688Thermographic method for determining the volume of concrete in a mixing container
The present invention relates to a method for determining the level of concrete in a concrete mixer comprising the steps of contacting the exterior of concrete mixing drum with a strip of thermal color sensitive material and observing the interface on the...
03/31/1992
5070694Structure for electrically heatable catalytic core
There is provided an improved electrically heatable core for an electrically heatable catalytic converter. The core is characterized by a plurality of corrugated thin metal strips secured to an electrically conductive central core or tube. Alternating wit...
12/10/1991
4985384Cracking catalysts having aromatic selectivity
An FCC catalyst is made with a zeolite Beta which contains from about 0.1 to 15 wt % based on the weight of the zeolite Beta of gallium, zinc or mixtures thereof. The catalyst substantially increases the aromatic content of the gasoline compared to just u...
01/15/1991
4977129Auto exhaust catalyst composition having low H2 S emissions and method of making the catalyst
A catalyst suitable for use as a three-way catalyst having low H2 S emissions for emission control and with substantially no ceria present is made with a refractory oxide particle or powder support having deposited thereon about 0.5-20% by weig...
12/11/1990
4940737Chemically modified hydrophilic prepolymers and polymers
A class of modified hydrophilic prepolymers and polymers is disclosed which are characterized by their specific reactivity. Isocyanate-capped oxyethylene-based prepolymers are modified by reacting with a compound having an isocyanate-reactive group which ...
07/10/1990
4929338Catalytic cracking catalyst and process
Catalytic cracking catalysts which contain a basic alkaline earth metal component in amounts greater than 5 percent by weight (expressed as the oxides) are used to crack hydrocarbon feedstocks that contain substantial quantities of metals such as vanadium...
05/29/1990
4877765Adsorptive material for the removal of chlorophyll, color bodies and phospholipids from glyceride oils
Acid-treated amorphous silica has superior properties for the removal of phospholipids and chlorophyll from glyceride oils. The acid-treated adsorbent comprises a high surface area amorphous silica on which is supported an acid having a pKa of ...
10/31/1989
4874405Coupling fluid separation membrane elements
An improved method is disclosed for coupling membrane elements of a fluid separation module in series. The improvement comprises providing flexible coupling members having two open ends and a passage between said ends; and securing the first end of a coup...
10/17/1989
4873359Process for preparing as partyl-phenylalanine dipeptides
Synthesis of phenylserine ester (a) via benzaldehyde and glycine ester using serine hydroxymethyltransferase; and (b) via methyl benzoylacetate. Synthesis of hydroxy-aspartame or derivative by enzymatic coupling of phenylserine or derivative with aspartic...
10/10/1989
4847182Method for developing a photopolymer printing plate using a developer comprising terpene hydrocarbons
This invention presents terpene-based solvents suitable for use in the processing of a wide variety of photopolymer printing plates. The solvents, which may be terpenes alone, terpenes mixed with organic non-solvents, or terpenes emulsified with water are...
07/11/1989
4810817Aspartyl-beta substituted phenylalanine dipeptides
Synthesis of phenylserine ester (a) via benzaldehyde and glycine ester using serine hydroxymethyltransferase; and (b) via methyl benzoylacetate. Synthesis of hydroxy-aspartame or derivative by enzymatic coupling of phenylserine or derivative with aspartic...
03/07/1989
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