| Patent Number |
Title Of Patent |
Date Issued |
| RE35975 |
Cleaning and drying of electronic assemblies |
December 1, 1998 |
| Components, especially of an electronic or electrical type, are cleaned by contact with a flammable liquid organic solvent (21), especially an alcohol. The surface of the solvent is covered with a non-flammable highly fluorinated compound vapor blanket (26), which vapor may also be used |
| 6797854 |
Process for drying a gaseous or liquid mixture with the aid of an adsorber composed of alumina a |
September 28, 2004 |
| The invention relates to a process for drying a gaseous or liquid mixture by passing the said mixture into an adsorber, characterized in that the water adsorption equilibrium zone of the adsorber comprises an upstream alumina zone and a downstream molecular sieve zone. |
| 6770776 |
Synthesis of fluorocarbon compounds |
August 3, 2004 |
| Fluorocarbon compounds are synthesized by reacting a substrate hydrocarbyl compound containing at least one sp.sup.3 -hybridized halophoric carbon atom bearing at least two halogen atom substituents, at least one of which is a halogen atom having an atomic number greater than that of flu |
| 6761867 |
Concentrated suspension of precipitation silica, processes for its preparation and uses of this |
July 13, 2004 |
| The invention relates to an aqueous suspension of precipitated silica, characterized in that its solids content is between 10 and 40% by weight, its viscosity is lower than 4.times.10.sup.-2 Pa.s at a shear rate of 50 s.sup.-1 and the quantity of silica present in the supernatant obtaine |
| 6683208 |
Optically active diphosphines, preparation thereof according to a process for the resolution of |
January 27, 2004 |
| New optically active bis[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] diphosphines and new optically active transition metal complexes with said phosphines are described. The complexes are useful as catalysts to promote hydrogenation of substrates. |
| 6521214 |
Process for preparation of abrasive precipitated silica |
February 18, 2003 |
| A process for the preparation of precipitated silica is disclosed. The precipitated silica has a refractive index from about 1.440 to about 1.450, among other properties. The silica is prepared by a method including; a first step of using an initial feedstock of water, an electrolyti |
| 6506832 |
Process for the preparation of aqueous emulsions of advantageously masked (poly)isocyanate oils |
January 14, 2003 |
| The present invention provides stable, high solids, aqueous emulsions of high viscosity masked (poly)isocyanates, water, surface active agents, and, optionally, thickening water-soluble polymers. The emulsions of the present invention are formulated in as little as 20 parts by weight wat |
| 6455018 |
Recovery of precious metal and other values from spent compositions/materials |
September 24, 2002 |
| Precious metal values, e.g., platinum, palladium and rhodium, and, optionally, other valuable elements, e.g., one or more rare earths and cerium in particular, are recovered from a wide variety of compositions of matter and articles of manufacture, for example waste or spent catalysts |
| 6380412 |
Optically active diphosphines, preparation thereof according to a process for the resolution of |
April 30, 2002 |
| The present invention relates to optically active diphosphines. It is also targeted at their preparation according to a process for the resolution of the racemic mixture of the said phosphines to optically active isomers. The subject of the invention is new optically active bis[1-pho |
| 6316636 |
Synthesis of fluorocarbon compounds |
November 13, 2001 |
| Fluorocarbon compounds are synthesized by reacting a substrate hydrocarbyl compound containing at least one sp.sup.3 -hybridized halophoric carbon atom bearing at least two halogen atom substituents, at least one of which is a halogen atom having an atomic number greater than that of flu |
| 6299701 |
Dishwasher detergent composition containing an anticorrosive agent |
October 9, 2001 |
| A detergent composition containing alkali-metal silicate with an average molar ratio of SiO.sub.2 /M.sub.2 O of 1-4.2, preferably 2.5-4.2, wherein M is an alkali metal, the composition being non-corrosive to glass, crystal, porcelain and decorative prints thereon upon repeated washing. |
| 6290924 |
Precipitated silica beads |
September 18, 2001 |
| Essentially spherical precipitated silica beads, well adapted for the reinforcement of elastomeric matrices, have a mean particle size of at least 80 .mu.m, a BET specific surface area ranging from 60 to 130 m.sup.2 /g, a fill density in packed state ranging from 0.28 to 0.37, and a tota |
| 6284033 |
Inorganic rare earth pigments/colorants and synthesis/applications thereof |
September 4, 2001 |
| Thermally/chemically stable and nontoxic inorganic pigments/colorants, characteristically green and well suited for the coloration of a wide variety of materials and substrates, for example, plastics, ceramics, etc., comprise at least one mixed oxide of the formula:in which R is at least |
| 6214912 |
Elastomeric matrix reinforced with precipitated silicas |
April 10, 2001 |
| A mechanically strong, vulcanized elastomeric matrix having an effective amount of a reinforcing filler material homogeneously dispersed and distributed therethrough, the reinforcing filler material comprising finely divided precipitated silica particulates and the precipitated silic |
| 6214306 |
Composition based on zirconium oxide and cerium oxide, preparation method therefor and use there |
April 10, 2001 |
| The invention relates to a composition based on zirconium oxide and comprising cerium oxide which has a specific surface of at least 30 m.sup.2 /g after calcination for 6 hours at 900.degree. C. and which is provided in the form of a pure solid solution of cerium oxide in zirconium o |
| 6210451 |
Colloidal organic sols comprising tetravalent metal oxide/organic acid complexes |
April 3, 2001 |
| Storage-stable colloidal organic sols comprise suspended tetravalent metal oxide particulates in an organic diluent medium, notably cerium dioxide particulates, the tetravalent metal oxide particulates having a particle size d.sub.90 no greater than 200 nanometers and being complexed wit |
| 6200457 |
Electroactivated material, its preparation and its use in producing cathode components |
March 13, 2001 |
| The present invention relates to an electroactivated material comprising fibers and a binder and additionally having an electrocatalytic agent in the form of particles comprising a precious metal oxide or in the form of particles comprising a support and a coating based on such an oxide. |
| 6184329 |
Polyfunctional, perhalogenated polyorganosiloxanes and methods for preparation thereof |
February 6, 2001 |
| Chemicaly stable, perflourinated, linear or cyclic polyorganosiloxanes (POS), and a process for the preparation thereof. Antifoams, agents for lowering surface tension, dirt repellents, antiadhesives, lubricants, oleophobic and/or hydrophobic agents, coatings and other compositions c |
| 6171699 |
Spheroidal silica particulates useful as reinforcing fillers for elastomers |
January 9, 2001 |
| Essentially spherical silica-based granular particulates, whether having a mean particle size of at least 300 .mu.m and a density of from 0.15 to 0.32, or a mean particle size of from 80 .mu.m to 400 .mu.m and a density of at least 0.32, are well adapted as reinforcing filler material fo |
| 6169135 |
Precipitated silica |
January 2, 2001 |
| Silicas in the form of powder and substantially spherical beads or granules are characterized by a CTAB specific surface of 140 and 240 m.sup.2 /g a high ultrasonic disaggregation factor, an average diameter, which is small after ultrasonic disaggregation, and optionally, a porous distri |
| 6153661 |
Onium borates/borates of organometallic complexes and cationic initiation of polymerization ther |
November 28, 2000 |
| Novel onium borates of an element of Groups 15 to 17 of the Periodic Table, or borates of an organometallic complex of an element of Groups 4 to 10 of the Periodic Table, well suited for the photochemical/electron beam cationic initiation of polymerization/crosslinking, the anionic borat |
| 6147184 |
Onium borates/borates of organometallic complexes and cationic initiation of polymerization ther |
November 14, 2000 |
| Novel onium borates of an element of Groups 15 to 17 of the Periodic Table, or borates of an organometallic complex of an element of Groups 4 to 10 of the Periodic Table, well suited for the photochemical/electron beam cationic initiation of polymerization/crosslinking, the anionic borat |
| 6136867 |
Aqueous suspension of silica and of aluminium sulphate or of alum, processes for the preparation |
October 24, 2000 |
| The invention relates to aqueous suspensions of precipitated silica and of aluminum sulphate which have a pH lower than 4 and a solids content of between 10 and 50% by weight and which, after a period at rest of 48 hours, are in the form of a gel. The gel is reversible under low shear. |
| 6124416 |
Aqueous emulsion of (CO) polymer made from monomer containing isocyanate group and olefinic doub |
September 26, 2000 |
| An aqueous emulsion comprising at least one (co)polymer is provided. The (co)polymer is derived from a monomer having formula (1):wherein R.sub.1, R.sub.2, and R.sub.3, which are the same or different, represent a hydrogen or a group selected from hydrocarbon chains comprising 1 to 12 ca |
| 6124235 |
Accelerator system for crosslinking polymers which harden on exposure to the moisture in air |
September 26, 2000 |
| An accelerator system for the cold crosslinking of polymers which harden on exposure to moisture by hydrolysis/condensation, comprising: (C) x parts by weight of a catalyst for crosslinking the said polymers by polycondensation, x ranging from 0.01 to 10; (E) Y parts by weight of a s |
| 6114274 |
Preparation of aliphatic carboxylic acids in the presence of heteropolyacid catalysts |
September 5, 2000 |
| The aliphatic carboxylic acids, e.g., acetic acid, are selectively prepared, even on an industrial scale, by controlledly oxidizing the corresponding alkanes, e.g., ethane, with a source of oxygen, in the presence of a catalytically effective amount of an advantageously supported het |
| 6107226 |
Precipitated silica beads |
August 22, 2000 |
| Essentially spherical precipitated silica beads, well adapted for the reinforcement of elastomeric matrices, have a mean particle size of at least 80 .mu.m, a BET specific surface area ranging from 60 to 130 m.sup.2 /g, a fill density in packed state ranging from 0.28 to 0.37, and a tota |
| 6093487 |
Polymer/CaCO.sub.3 composite core/sheath particulates and hollow . CaCO.sub3 microbeads |
July 25, 2000 |
| Composite core/sheath particulates comprising an organic polymer core at least partly coated with calcium carbonate, these core/sheath particulates having a mean particle size not exceeding 5 .mu.m, well suited for reinforcing plastic/elastomer substrates, are conveniently converted, |
| 6093223 |
Aggregates of ceric oxide crystallites and reduction of vehicular emissions therewith |
July 25, 2000 |
| Vehicular emissions are reduced/purified via combustion of the hydrocarbon fuel therefor, e.g., diesel fuel, in the presence of a cerium compound, preferably a cerium (IV) compound, to produce soots having depressed ignition temperatures that contain effective purifying amounts of ag |
| 6090743 |
Dispersible rare earth compositions and colloidal suspensions/catalysts comprised thereof |
July 18, 2000 |
| Colloidal dispersions of finely divided particulates, well suited for the production of catalysts for the catalytic conversion of exhaust gases emanating from internal combustion engines, notably vehicular exhaust gases, comprise at least one rare earth compound and, optionally, at least |
| 6063967 |
Preparation of picric acid |
May 16, 2000 |
| Picric acid, namely, 2,4,6-trinitrophenol, is readily and effectively prepared by nitrating o-nitrophenol and/or p-nitrophenol into at least one dinitrophenol in a nitric acid medium of reaction, characteristically essentially consisting of nitric acid or immixture thereof with a strong |
| 6037493 |
Optically active diphosphines, preparation thereof according to a process for the resolution of |
March 14, 2000 |
| The present invention relates to optically active diphosphines. It is also targeted at their preparation according to a process for the resolution of the racemic mixture of the said phosphines to optically active isomers.The subject of the invention is new optically active bis[1-phospha- |
| 6037407 |
Process for the preparation of aqueous emulsions of silicone oils and/or gums and/or resins |
March 14, 2000 |
| A cosmetic composition comprising an aqueous emulsion of organopolysiloxanes selected from the group consisting of silicone oils, gums, resins and mixtures therein which is prepared in a single kneading step which is sufficient to produce an emulsion having a particle size of 0.1 to |
| 6024933 |
Direct oxidation method for converting sulphur compounds into sulphur with a copper catalyst |
February 15, 2000 |
| The invention relates to a process for the direct oxidation of sulphur compounds into elemental sulphur and/or into sulphates at a temperature below 200.degree. C., in which a supported catalyst whose catalytically active phase comprises copper is used, the copper element being present i |
| 6020184 |
Polyorganosiloxane biodegradation method using a microscopic fungus and screening method |
February 1, 2000 |
| A biodegradation method for polyorganosiloxanes (POS), particularly polydimethylsiloxanes (PDMS), includes contacting the POS with one or more microscopic fungi, preferably in the presence of at least one co-substrate, said fungus being selected from the family of Corticiacea, prefer |
| 6013617 |
Q.sub.2 /Q.sub.3 alkali metal silicate/inorganic compound detergent builders |
January 11, 2000 |
| Pulverulent detergent compositions, particularly suitable for washing and dishwashing machines, include a surfactant and a builder therefor, such builder comprising an alkali metal silicate advantageously having a SiO.sub.2 /M.sub.2 O molar ratio ranging from about 1.6 to 3.5, at least |
| 6008408 |
Process for the hydroxycarbonylation of pentenoic acids |
December 28, 1999 |
| The present invention relates to a process for the hydroxycarbonylation of pentenoic acids. By the process, one or a number of pentenoic acids are hydroxycarbonylated to adipic acid, by carbon monoxide and water, in the presence of a catalyst based on iridium and/or rhodium and of at lea |
| 6001322 |
Precipitated silicas |
December 14, 1999 |
| Precipitated silica particulates suited for homogeneous incorporation, dispersion and distribution within vulcanized elastomeric matrices reinforced therewith can be formed as either a powder, substantially spherical beads, or granulates. The silica particulates have a CTAB specific |
| 5998536 |
Aqueous polyorganosiloxane emulsion for the coating of textiles |
December 7, 1999 |
| The aqueous polyorganosiloxane emulsion, in particular for the coating of textiles or similar materials, which comprises an organopolysiloxane formula which is a precursor of the elastomer comprising a polydiorganosiloxane, preferably an inorganic filler, a catalyst and optionally a |
| 5981809 |
Process for the preparation of difunctional compounds of high enantiomeric purity |
November 9, 1999 |
| A process for preparing a difunctional compound having high enantiomeric purity that is a 1,2-, 1,3-, or 1,4-diol, dithiol, or mercapto alcohol from an optically active starting material that includes an .alpha.-, .beta.-, or .gamma.-hydroxy (or mercapto) aldehyde, ketone, ester, or |
| 5977395 |
Ester syntheses and transesterifiable xanthate reactants therefor |
November 2, 1999 |
| "Esters" are synthesized by reacting a nucleophile with a propargyl xanthate advantageously having the formula (I):in the presence of at least one acid, Bronsted or otherwise, and at a temperature ranging from 0.degree. to 300.degree. C.; the subject reaction is particularly applicable t |
| 5973210 |
Intermetallic ruthenium tin-catalyst for use in aldehyde synthesis |
October 26, 1999 |
| The present invention relates to a composition which can be used as reduction catalyst.This composition is characterized in that it comprises a support whose constituent material comprises at least one oxide chosen from oxides which are inert or capable of being made inert relative to th |
| 5973061 |
Aqueous silicone dispersions crosslinkable into elastometric state by dehydration |
October 26, 1999 |
| Aqueous silicone dispersions crosslinkable into elastomeric state by elimination of water therefrom, well adapted for the production of elastomer seals, e.g., for the building industry, include:(A) 100 parts by weight of an oil-in-water emulsion of an .alpha.,.omega.-(dihydroxy)polydiorg |
| 5968470 |
Precipitated silica particulates having controlled porosity |
October 19, 1999 |
| Precipitated silica particulates having a BET specific surface ranging from 20 to 300 m.sup.2 /g, a CTAB specific surface ranging from 10 to 200 m.sup.2 /g, an oil uptake (DBP) ranging from 80 to 400 cm.sup.3 /100 g, a pore volume ranging from 1 to 10 cm.sup.3 /g and a mean pore diameter |
| 5968247 |
Very finely divided rare earth sulfide colorant compositions |
October 19, 1999 |
| Unique colorant compositions, well suited for the pigmentation of a wide variety of coatings and substrates, e.g., cosmetics, plastics, paints and rubbers, comprise (1) at least one crystalline rare earth metal sulfide or sesquisulfide, for example cubic cerium sesquisulfide Ce.sub.2 S.s |
| 5961882 |
Use of a compound based on a rare-earth phosphate as a luminophor in plasma systems |
October 5, 1999 |
| The invention relates to the use as a luminophor in plasma systems of a compound based on an yttrium, lanthanum, gadolinium or lutecium phosphate doped with at least one rare earth chosen from the group comprising terbium, praseodymium, europium and cerium. |
| 5958127 |
Process for the preparation of precipitated silica, new precipitated silicas containing zinc and |
September 28, 1999 |
| The invention relates to a new process for the preparation of precipitated silica which has a good dispersibility and very satisfactory reinforcing properties. It also relates to new precipitated silicas which are in the form of powder, of substantially spherical beads or of granules, th |
| 5955634 |
Allylation reagent and process for allylating a nucleophile |
September 21, 1999 |
| A process and reagent for allylating a nucleophile preferably of formula (V).The nucleophile is reacted with a reagent containing an allyl derivative and a catalyst in an aqueous phase containing at least one element of group VIII of the Classification of the elements. A water-soluble |
| 5932191 |
Abrasive silicas for toothpaste compositions |
August 3, 1999 |
| The present invention relates to silicas, in particular precipitated silicas, which can be used in particular as abrasive agents in toothpaste compositions. The silicas according to the invention have, first of all, low specific surfaces. Their BET specific surface is between 20 and 75 |
| 5929166 |
Silicone compounds containing a phenylenediamine functional group and their application in the p |
July 27, 1999 |
| The present invention relates to compounds composed essentially of a linear, cyclic or branched polyorganosiloxane having, per molecule, at least 3 siloxy units, including at least one siloxy functional unit of formula: ##STR1## where R.sup.1 represents a C.sub.1 to C.sub.4 alkyl |
