Abstract: The present invention provides novel silicon compounds, methods for making these novel silicon compounds, compositions comprising these novel silicon compounds attached to substrates, methods for attaching the novel silicon compounds to substrates and methods for using the compositions in a variety of chromatographic applications.

Abstract: The present invention provides amorphous silica particles having high oil absorbency and high structural characteristics, wherein the oil absorbency is hardly decreased even when a high load is applied to the amorphous silica particles. In particular, amorphous silica particles are provided, wherein the maximum value of ?Vp/?Rp (where Vp is the pore volume [mm3/g] and Rp is the pore radius [nm]) is 20 mm3/nm·g?1 or more in the pore distribution curve obtained by a benzene adsorption isotherm, and the pore peak radius when the ?Vp/?Rp value is maximum is from 20 nm or more to 100 nm or less.

Abstract: A composition for use in chromatography is provided comprising a substrate modified with a metal-cyano bonded phase. This novel cyano bonded phase provides superior performance in high performance liquid chromatography (HPLC) and provides superior selectivity, improved peak shape for basic analytes, and the ability of provide rapid separation with outstanding resolution. The composition exhibits improved storage stability, and is chemically stable over a range of pH from 1.5 to 7.5 mobile phase conditions and for more than 2000 multiple injections. A baseline separation of eight tricyclic antidepressants was achieved in less than four minutes using an isocratic mobile phase with the metal-cyano bonded phase of the present invention, compared to the long retention times and poor separation observed for traditional cyano bonded phase. The composition of this invention is particularly useful in a wide variety of chromatographic applications.

Abstract: Disclosed is an absorbent for separation of carbon dioxide from mixed gases, comprising a mixture of i) a compound of the chemical formula 1 having one or more groups of three functional groups consisting of amino group attached to a tertiary carbon atom; carboxylate group; and hydroxyl group respectively, in a molecule, or a compound of the chemical formula 2 having one or more groups of two functional groups consisting of amino group attached to a quarternary carbon atom; and carboxylate group respectively in a molecule, and ii) an amine compound which promotes the reaction. The absorbent for separation of carbon dioxide of the present invention is advantageous economically, since its efficiency is excellent due to larger unit absorption amount of carbon dioxide, and the energy required for regeneration can be reduced due to the relatively wider difference of absorption amounts with temperature.

Abstract: Solid materials have been developed to remove arsenic compounds from aqueous media. The arsenic is removed by passing the aqueous phase through the solid materials which can be in molded, granular, or powder form. The solid materials adsorb the arsenic leaving a purified aqueous stream. The materials are aerogels or xerogels and aerogels or xerogels and solid support structure, e.g., granulated activated carbon (GAC), mixtures. The species-specific adsorption occurs through specific chemical modifications of the solids tailored towards arsenic.

Abstract: The present invention relates to a packing material for ion chromatography, wherein a quaternary ammonium base represented by the following formula (1) is bonded to the substrate directly or through a spacer: wherein R1 represents a group having at least one olefinic double bond or conjugated double bond, each R2 and R3 independently represents an organic residue which may be the same with or different from R1; and separating equipment for chemical substances and a separating method using the packing material. The packing material for ion chromatography, separating equipment for chemical substances and a separating method using the packing material of the present invention, enable to sufficiently separate seven standard inorganic anions and three halogen oxide anions in either of the conductometric detection or ultraviolet detection by postcolumn derivatization while preventing increase in the pressure and imposing no limitations on the measurement temperature or flow rate of mobile phase.

Abstract: An affinity ligand-matrix conjugate comprises the matrix and conjugated thereto by the group Z, a ligand having general formula (I): wherein one X is N and the other X is N, CCL or CCn; A1 and A2 are each independently O, S or N—R1 and R1 is H, C1-6 alkyl, C1-6 hydroxyalkyl, benzyl or ?-phenylethyl; B1 and B2 are each independently an optionally substituted hydrocarbon linkage containing from 1 to 10 carbon atoms; D1 is H or a primary amino, secondary amino, tertiary amino, quaternary ammonium, imidazole, guanidine or amidino group; and D2 is a secondary amino, tertiary amino, quaternary ammonium, imidazole, guanidine or amidino group; or B2—D2 is —CHCOOH—(CH2)3-4—NH2; and p is 0 or 1. Such conjugates are useful for the separation, isolation, purification, characterization, identification or quantification of an endotoxin.

Abstract: An affinity ligand-matrix conjugate comprises the matrix and conjugated thereto by the group Z, a ligand having general formula (I): wherein one X is N and the other X is N, CCL or CCn; A1 and A2 are each independently O, S or N-R1 and R1 is H, C1-6 alkyl, C1-6 hydroxyalkyl, benzyl or ?-phenylethyl; B1 and B2 are each independently an optionally substituted hydrocarbon linkage containing from 1 to 10 carbon atoms; D1 is H or a primary amino, secondary amino, tertiary amino, quaternary ammonium, imidazole, guanidine or amidino group; and D2 is a secondary amino, tertiary amino, quaternary ammonium, imadazole, guanidine or amidino group; or B2-D2 is —CHCOOH—(CH2)3-4—NH2; and p is 0 or 1. Such conjugates are useful for the separation, isolation, purification, characterization, identification or quantification of an endotoxin.

Abstract: The present invention provides compositions and methods for the separation of metals or molecules such as polypeptides, nucleic acids, or endotoxins using a metal-modified solid support. The metals or molecules are isolated from a starting material using the modified solid supports of the invention. Also provided by the invention are kits that can be used in connection with the inventive methods.

Abstract: An adsorbent for cardiac glycoside contained in body fluid, comprising a compound having a log P value of at least 6 immobilized on a water-insoluble carrier is provided. A process for adsorbing and removing cardiac glycoside contained in body fluid efficiently, which comprises contacting body fluid with this adsorbent for cardiac glycoside is provided.

Abstract: A zirconium-loaded fibrous adsorbent material having phosphoryl groups which is produced by first grafting a reactive monomer having phosphoryl groups onto a polymeric substrate and then loading zirconium.

Abstract: The invention is a method of preparing multimodal ligands for hydrophobic interaction chromatography (HIC), which comprises providing a cyclic scaffold comprising a thiol, an amine and a carbonyl group; derivatisation of the nitrogen with a reagent to introduce a primary interaction; and aminolysis of the resulting derivative, whereby a secondary interaction is introduced next to the carbonyl; wherein at least one of the primary interaction and the secondary interaction comprises a hydrophobic group and wherein non of said interactions comprises charged groups, i.e. ion exchange ligands. The invention also encompasses a separation medium comprising such multimodal ligands immobilised to a base matrix.

Abstract: The invention relates to a method of preparing multi-modal anion-exchange ligands, which comprises providing a cyclic three-functional scaffold comprising an amine, a carbonyl and a thiol; optionally derivatisation of the amine of the scaffold to provide an anion-exchanging group and/or to protect the amine; and aminolysis to open up the derivative by adding a reagent comprising an amine coupled to a residue R in order to add said amine to the carbonyl carbon of the opened scaffold. The scaffold is advantageously homocysteine thiolactone. In one embodiment, the method comprises an additional step of immobilising the opened scaffold to a base matrix to provide a separation medium, such as a chromatography medium.

Abstract: The invention includes an ion affinity material having an organic component which is sulfonated and which is chemically bonded to an inorganic substrate component. The invention includes a method of forming a metal binding material. A solid support material comprising surface oxide groups is provided and an organic component having at least one alkyl halide is covalently linked to at least some of the surface oxide groups to form a modified support material. The at least one alkyl halide is subsequently converted into an alkyl sulfonate. The invention further includes a method and system for extracting ions from a liquid. An ion exchange material having a sulfonated alkyl silane component covalently bonded to a metal oxide support material is provided and a liquid is exposed to the ion exchange material.

Abstract: The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports.

Abstract: The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports.

Abstract: The present invention is an improved filtration system, filtering method and unique chemical composition for capturing mercury and other pollutants in flue gases generated by process gas streams. The improved filtration system may take various forms depending on the type of filter system most desired for a particular application; however, the filter system includes at least a filter element or elements and an adsorbent component having a composition suitable for capturing mercury on the downstream side of the filter element.

Abstract: Medium for chromatographic separations. The medium includes a support with a surface on which interwoven polymers are coated to form a polymer surface. The polymers are covalently linked to the support surface. The polymers are each formed from one or more monomer types and at least one monomer type has an amine functional group. The medium also includes an active molecule immobilized on the polymer surface that is selected to separate reagent materials by chemical structure.

Abstract: The present invention is a method of producing a chromatographic separation matrix, wherein porous polymeric particles comprised of two layers with different properties are prepared in a two-phase system by (a) providing porous polymeric particles with reactive groups on their surfaces; (b) washing said particles with a first solvent and draining the particles to enclose a first phase; (c) wetting the outer layer of the particles by adding a second solvent, which is essentially insoluble in the first solvent; (d) reacting the reactive groups in the outer layer by adding a reagent, which is essentially non-reactive in the first solvent; and (e) coupling of chromatographic binding groups to the reactive groups in the inner layer. The invention also encompasses a porous polymer particle suitable for use as a chromatographic separation matrix and a process of separation, wherein a matrix according to the invention is used.

Abstract: A method for the production of a cross-linked support matrix that in form of a bed will permit liquid flow velocities above 5 cm/h, preferably above 50 cm/h, to pass through the bed. The method is characterized in that it comprises the steps: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation. The use of a cross-linked support matrix produced by a method comprising the steps of: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation as a support matrix in liquid chromatography, cell culturing, step-wise solid phase synthesis of organic compounds, running catalytic reactions by the use of a solid phase bound catalyst.

Abstract: Disclosed is a method for determining the swellability and the swelling kinetics of superabsorbent material (9) such as polymer gels, for example, which comprises introducing a defined volume of the dry superabsorbent material (9) into a measuring vessel (7), using a movable element (4) within said measuring vessel (7) to apply a restraining force (12) to said superabsorbent material (9) and capturing the expansion of said superabsorbent material (9) contactlessly within a chamber (14) in a continuous manner by capturing the change in height of a piston (4) which bounds said chamber (14), travels in a measuring vessel (7) and is marked with a height scale (6).

Abstract: Polymer particles are irradiated with radiation from a high energy source to increase the water or other fluid absorbency of the particles. Products manufactured using the activated particles include protective undergarments, bandages, kitty litter, and spill clean up materials.

Abstract: The present invention relates to a solid and method useful in separating chemical components in a complex mixture when at least one of the chemical components of the mixture is capable of being selectively adsorbed. The solid of the present invention comprises an inorganic substance and moieties (R10) located on at least one surface of the inorganic substance, wherein said inorganic substance is an inorganic oxide and the surface moiety is selected from the group consisting of —CH2OH, —CH(OH)2, —CH(OH)CH3, —CH2CH2OH, —C(OH)2CH3, —CH2CH(OH)2 and —CH(OH)CH2(OH). Binding moiety, optionally attached to the inorganic substance via a linker, can also be located on the surface of the solid.

Abstract: A general chiral column with a multipleproline-based chiral stationary phase. Embodiments include chiral stationary phases of the following formula: wherein n is any integer of 2 or greater, and analogs and isomers thereof.

Abstract: A general chiral column with a multipleproline-based chiral stationary phase. Embodiments include chiral stationary phases of the following formula: wherein n is any integer of 2 or greater, and analogs and isomers thereof.

Abstract: Divalent and trivalent metal salts are added to the solution containing the fluorine compound to precipitate the layered double hydroxide containing the fluorine compound between layers. By these processes, the fluorine compound can be fixed with high rate. Moreover, if necessary, the precipitated layered double hydroxide can be recovered to separate the fluorine compound or its salt between layers. Therefore, the burden to environment or the ecosystem by the fluorine compound can be reduced.

Abstract: Novel compositions are disclosed for use as a stationary phase in chromatography comprising an inorganic substrate that is modified with at least one silane having the formula R1?-Q?-(CH2)?SiR2?X3-?. In a preferred embodiment, the inorganic substrate is silica gel and is modified with at least two silanes. Methods of preparation and use in chromatographic applications are disclosed. The novel compositions provide superior chromatographic performance, reduced silanol activity, enhanced stability, and reproducibility in preparation and performance.

Abstract: Hollow glass microspheres obtained from fly ash (cenospheres) are impregnated with extractants/ion-exchangers and used to remove hazardous material from fluid waste. In a preferred embodiment the microsphere material is loaded with ammonium molybdophosphonate (AMP) and used to remove radioactive ions, such as cesium-137, from acidic liquid wastes. In another preferred embodiment, the microsphere material is loaded with octyl(phenyl)-N-N-diisobutyl-carbamoylmethylphosphine oxide (CMPO) and used to remove americium and plutonium from acidic liquid wastes.

Abstract: The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports.

Abstract: A cat litter product is provided and includes manufacture primarily from modified corn starch which is processed through mash distillation. The litter product is pelletized via an extrusion technology process so as to form particles the size of wheat grain. The litter product provides, collectively, a non-toxic and naturally safe, biodegradable, odor-eliminating, scented, anti-bacterial litter that clumps in a convenient size for easy disposal and which has little dust and reduces tracking by cats.

Abstract: The present invention relates to a method of generating a separation medium comprising mixed mode cation-exchanger ligands coupled to a base matrix, which method comprises to provide a scaffold comprising a functional group and exhibiting a cyclic core structure; derivatise the scaffold with a reagent comprising a reactive group coupled to a residue R by reacting the functional group of the scaffold with said reactive group; open the cyclic structure of the resulting derivative; and react the product with a base matrix comprising a reactive group. The scaffold presents at least two functionalities; one sulphur-comprising group for coupling to the base matrix and one group that can be transformed into an ionic group.

Abstract: Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incorporate the organofunctional group R as part of a O3Si—R—siO3 unit in the framework of the compositions. The compositions are useful as molecular sieves, supports for catalysts and numerous other applications requiring an organo group on surfaces of a silica.

Abstract: The present invention relates to an agent for removing pollutants from gases comprising a wax which has a drop melting point between 40 and 150° C., a melt viscosity of 2 to 20 000 mPas and a needle penetration of 1 to 50, and which contains at least one alkoxylated compound.

Abstract: The invention provides a new universal bonded phase material used for separation of a wide variety of organic and inorganic substances by liquid chromatography. The material is produced by bonding a charge-bearing hydrophobic functional group to the surface of a supporting material. The process of preparation of such material and advantages of using the material are described.

Abstract: Disclosed is a modified photocatalyst sol comprising a liquid medium having dispersed therein particles of a modified photocatalyst, wherein the modified photocatalyst particles are prepared by subjecting particles of a photocatalyst to a modification treatment with at least one modifier compound selected from the group consisting of different compounds each of which independently comprises at least one structural unit selected from the group consisting of a monooxydiorganosilane unit, a dioxyorganosilane unit and a difluoromethylene unit, and wherein the modified photocatalyst particles have a specific volume mean particle diameter. Also disclosed is a modified photocatalyst composition comprising the modified photocatalyst sol and a functional substance.

Abstract: The invention describes new chiral stationary phases containing a 4-amino-3,5-dinitrobenzoic unit modified with chiral groups and spacer groups. The invention includes the process for the preparation of said stationary phases starting from 4-halogenated derivative of 3,5-dinitrobenzoic acid, chiral selectors obtainable as intermediates in the aforesaid process, and the use of the chiral stationary phases in the separation of enantiomers.

Abstract: The present invention relates to a method of generating at least one polydentate metal chelating affinity ligand, which method comprises the steps of a) providing at least one cyclic scaffold comprising a carbonyl, an adjacent sulphur and a nucleophile; b) providing at least one polydentate metal chelating affinity ligand arm, optionally in a form wherein the metal chelating functionalities are protected, on each scaffold by derivatisation of the nucleophile of said scaffolds, while retaining the cyclic structure of the scaffold; (c) ring-opening at the bond between the carbonyl and the sulphur of the derivatized scaffold by adding a reagent that adds one or more metal chelating affinity ligand arms to the scaffold; and, if required, (d) deprotecting the functionalities of the ligand arm(s) provided in step (b). In the most preferred embodiment of the method, steps (c) and (d) are performed simultaneously as one single step.

Abstract: A water insoluble, water swellable absorbent composition exhibiting a free swell absorbency of at least 15 g/g and an Absorbency Change of greater than or equal to 15% upon saturation. The absorbent composition includes both permanent crosslinking points and transitional crosslinking points. The absorbent composition has a high free swell capacity as well as a high absorbency under load.

Abstract: The present invention relates to a solid and method useful in separating chemical components in a complex mixture when at least one of the chemical components of the mixture is capable of being selectively adsorbed. The solid of the present invention comprises an inorganic substance and moieties (R10) located on at least one surface of the inorganic substance, wherein said inorganic substance is an inorganic oxide and the surface moiety is selected from the group consisting of —CH2OH, —CH(OH)2, —CH(OH)CH3, —CH2CH2OH, —C(OH)2CH3, —CH2CH(OH)2 and —CH(OH)CH2(OH). Binding moiety, optionally attached to the inorganic substance via a linker, can also be located on the surface of the solid.

Abstract: A process and composition for selectively adsorbing oxygen from a gaseous mixture. The chemisorption is carried out by a porous three-dimensional transition element complex comprised of intermolecularly bound TEC units, said units further comprised of at least one multidentate ligand forming at least one five- or six-membered chelate ring on each unit.

Abstract: The invention relates to a product capable of transforming a toxic, corrosive or environmentally harmful liquid product into a harmless or non-aggressive residue comprising: at least one amphoteric selected in such a way that: the pH of the residue obtained is within the range of from 5 to 10, preferably from 5.5 to 9.7, the lowest of the acidic pK values of the amphoteric is within the range of from 5 to 10, preferably from 5.5 to 9.7, and the highest of the basic pK values of the amphoteric is within the range of from 5 to 10 and preferably from 5 to 8, and the highest of the basic pK values of the amphoteric is lower than the lowest of the acidic pK values, at least one lipophilic absorbent and at least one hydrophilic absorbent.

Abstract: The present invention relates to a composition including an organic phosphorous-containing group bonded via an oxygen atom to a metal oxide of at least one element M. Generally, the composition is essentially amorphous, and includes an essentially monomolecular layer of an organic group directly bonded to the phosphorous atom. In addition, the composition is generally essentially free of any phosphate, phosphonate or phosphinate phase of the element M. Moreover, the composition has a ratio of the element M to phosphorous of about 15:1-200:1.

Abstract: A superabsorbent composition comprising a superabsorbent material and an elastomer. The superabsorbent composition has a two-phase morphology resulting in one of the superabsorbent material and elastomer being dispersed as aggregates in the other continuous material. The superabsorbent composition has a low glass transition temperature. The low glass transition temperature gives the superabsorbent composition many beneficial properties. This invention also discloses novel superabsorbent particles, fibers, films, and microporous films. Also disclosed in this invention are personal care articles comprising such particles, fibers, films and microporous films.

Abstract: A process for production of a partially hydrophilized absorbent is described, which comprises using, as a starting material, porous particles made of an organic compound having properties such that they are shrunk in a solvent containing water as a major component and swollen in a solvent containing an organic solvent as a major component; newly introducing functional groups to react with any one compound selected from the group consisting of compounds containing hydroxyl, amino, carboxyl, halogen or epoxy group in a solvent containing an organic solvent as a major component; and then reacting with a compound containing alcoholic OH group in a solvent containing water as a major component to immobilize the compound containing alcoholic OH group on the outer surfaces of the particles.

Abstract: An apparatus and method for removing mercury, and in particular elemental mercury, from a fluid stream by exposing the fluid stream to a polyethersulfone surface onto which has been loaded elemental iodine. Elemental iodine is loaded onto the polyethersulfone surface by immersing the polyethersulfone substrate in an iodine/ethanol solution, then removing the substrate from the iodine/ethanol solution and rinsing in ethanol.

Abstract: The invention provides novel adsorbents for use in the separation of unsaturated hydrocarbons from a mixture of gases containing such hydrocarbons. The preferred adsorbents comprise metal compounds supported on high surface area carriers. The adsorbents of the invention are usable in pressure swing adsorption or temperature swing adsorption processes.

Abstract: The present invention relates to a method of preparing adsorbent particles formed from expanded plastics materials, said particles comprising cellular structures that are open at their surface, characterized in that a material constituted by agglomerated beads of said expanded material and having smooth surfaces is rasped into fine chips. The present invention also relates to adsorbent particles formed from an expanded plastics material comprising cellular structures that are open at their surface, characterized in that they are in the form of fine chips, preferably with a dimension of 0.8 mm to 4 mm, said open cellular structures represent more than 80% of the visible surface area of said chips. In a method of treating soil polluted with hydrocarbons, the following steps are carried out, in which: 1) said polluted soil is mixed with adsorbent particles according to the invention; and 2) said adsorbent particles charged with hydrocarbons are separated from the depolluted soil.

Abstract: The present invention is a manufacturing method for an anion-layered double hydroxide intercalation compound that uses metal hydroxides as the stating material of the layered double hydroxides (LDH) which are the host material and allows sterically complicated and large-size anion compounds to be used as the guest material, and it has the characteristics such that a reaction mixture of the metal hydroxides and anion compound is heated and hydrothermally reacted in the absence of anion components other than the anion compound of the guest material. In addition, the present invention pertains to an anion-layered double hydroxide intercalation compound that uses bile acid as the anion compound of the guest material, which is effective as the carrier of medical drugs or as the absorbent of physiological active materials.

Abstract: The present invention describes the use of porous metal oxides for the preparative purification of antibodies and biomolecules within a range of particle physical characteristics. Typically, particles from 15 to 100 microns in average diameter with pores sizes ranging from 400 to 600 angstroms and surface areas from 10 to 50 square meters per gram, and pore volumes from 0.1 to 0.4 mL/gram can be used for purification processes. The metal oxide particles that fall within this range of physical properties show enhanced utility and greater chromatographic capacity for antibodies than materials oxide particles falling outside of this range. Metal oxides such as zirconia, titania and alumina can all be modified with a multi-Lewis base moiety such as an organophosphate ethylenediamine-N,N-tetra(methylenephosphonic) acid (EDTPA), to produce a bio-compatible purification media for, biomolecules.

Abstract: A method for purifying breathing air using a carbon-based monolith structure impregnated with copper, silver, zinc, and molybdenum species and triethylenediamine, wherein the monolith structure is impregnated by a multiple step process. The method of impregnation results in a carbon-based monolith structure that purifies nuclear, biological, or chemical contaminants under conditions of high flow rate and low pressure drop.