W.R. Grace and Company is a Columbia, Maryland–based chemical conglomerate. Grace is divided into three business segments—Grace Catalysts Technologies, Grace Materials Technologies, and Grace Construction Products. Grace is a specialty chemicals and materials company. It has more than 6,700 employees in nearly 40 countries, and annual sales of more than US $ 2.5 billion. The company's stock, listed in 1953, trades on the New York Stock Exchange. Wikipedia.
WR Grace | Date: 2017-01-17
The presently disclosed and claimed inventive concept(s) relates to solid catalyst components comprising titanium, magnesium, halogen and an internal electron donor compound having at least one ester group and at least one alkoxy group, and catalyst systems containing the catalyst solid components, organoaluminum compounds, and organosilicon compounds. The presently disclosed and claimed inventive concept(s) further relates to methods of making the catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems.
WR Grace | Date: 2016-12-20
Solid catalyst components for use in olefin polymerization, olefin polymerization catalyst systems containing the solid catalyst components, methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing and copolymerizing olefins involving the use of the catalyst systems. The solid catalyst components are formed by (a) dissolving a magnesium compound and an auxiliary intermediate electron donor in at least one first solvent to form a solution; (b) contacting a first titanium compound with said solution to form a precipitate of the magnesium compound and the first titanium compound; (c) washing the precipitate with a mixture of a second titanium compound and at least one second solvent and optionally an electron donor at a temperature of up to 90 C.; and (d) treating the precipitate with a mixture of a third titanium compound and at least one third solvent at 90-150 C. to form a solid catalyst component.
WR Grace | Date: 2017-06-07
Provided are crystalline forms of nicotinamide riboside, including a Form I of nicotinamide riboside chloride according to formula (I). Also disclosed are pharmaceutical compositions comprising the crystalline Form I of nicotinamide riboside chloride, and methods of producing such pharmaceutical compositions. In other aspects, the present disclosure pertains to methods comprising administering to a subject the crystalline Form I of nicotinamide riboside chloride. The present disclosure also provides methods of preparing the crystalline Form I of nicotinamide riboside chloride. Also provided are a crystalline Form I of nicotinamide riboside chloride that is prepared according to any of the disclosed methods for preparing the crystalline Form I.
WR Grace | Date: 2017-06-28
A method for synthesizing small crystals of silicoaluminophosphate-34 (SAPO-34) molecular sieves with high structural purity. The method includes first forming a slurry comprising monoisopropanolamine. Then, the slurry is aged to form an aged slurry. Finally, crystallization of silicoaluminophosphate molecular sieves comprising the SAPO-34 molecular sieves is induced from the aged slurry.
WR Grace | Date: 2017-02-15
Disclosed are silica bound zeolite adsorbent particles which possess high volumetric gas adsorption capacity for the adsorption and/or desorption of gases. The adsorbent are highly effective as a gas source in volumetrically constrained applications. The silica-bound zeolite adsorbents possess a relatively high zeolite content simultaneously with a relatively low intra-particle pore volume as compared to the clay bound zeolite aggregates heretofore used as a gas source in volumetrically constrained environments, e.g. instant beverage carbonation processes, devices or systems.
WR Grace | Date: 2017-03-08
Methods of making functionalized support material are disclosed. Functionalized support material suitable for use in chromatography columns or cartridges, such as in a high pressure liquid chromatography (HPLC) column or a fast protein liquid chromatography (FPLC) column, is also disclosed. Chromatography columns or cartridges containing the functionalized support material, and methods of using functionalized support material, such as a media (e.g., chromatographic material) in a chromatography column or cartridge, are also disclosed.
WR Grace | Date: 2017-04-12
A method for deoxygenating renewable oils comprised of natural oils or greases or derivatives thereof containing triglycerides or free fatty acids includes the steps of: providing a catalyst comprising a support predominantly comprised of alumina with metal compounds provided on the support based on Mo and at least one selected from the group consisting of Ni and Co, and at least one selected from the group consisting of Cu and Cr, and contacting the renewable oils with the catalyst under conditions sufficient to deoxygenate the renewable oils.
WR Grace and LBeste Gat Ltd. | Date: 2016-09-23
The present invention provides compositions and methods involving the use of a carboxylate graft polymer having high molecular weight and low ratio of acid-to-polyoxyalkylene groups. Such clay-mitigation is particularly useful for treating clay and clay-bearing aggregates, particularly those aggregates used for construction purposes. The present invention minimizes the need to wash the aggregates, thus preserving fine aggregates (fines) content in construction materials, and thereby beneficiating the performance and/or properties of construction materials containing the clay-bearing aggregates.
WR Grace | Date: 2015-04-29
The invention provides an aqueously-swellable water stop having an elongate body formed by shaping or extruding a composition mixture comprising water swelling fillers and/or polymers (e.g. Bentonite, super absorbent polymers, hydrophilic polymers), at least one elastomer or polymer, and preferably at least one plasticizer, the composition mixture when formed into an elongate water stop body having a Shore A hardness (durometer) of less than 35 and more preferably in the range of 5-35 (measured at 21C). The water stop body has at least one major face and a layer of pressure-sensitive adhesive attached to the face for bonding to a concrete substrate. The water stop of the invention does not require use of rigid metal and hard plastic inner cores as in prior water stop designs, and avoids curling and snaking that would allow concrete poured against the water stop to invade between the first substrate and the water stop body, and thereby providing full bonding between the water stop and thus protecting against leakage through concrete construction joints.
WR Grace | Date: 2016-07-27
Disclosed are thermoformed articles comprising a propylene-based polymer comprising a substituted 1,2-phenylene dibenzoate selected from the group consisting of 3-methyl-5-tert-butyl-1,2-phenylene, dibenzoate and 3,5-diisopropyl-1,2-phenylene dibenzoate. The thermoformed articles have high stiffness, good compression strength, excellent processability, and excellent optics.