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| Number | Title | Issue Date |
| 7262256 | Polycarboxylic acid mixture A polycarboxylic acid mixture comprising 80% by weight or more of 1,3,6-hexanetricarboxylic acid, wherein the polycarboxylic acid mixture has a psychometric lightness L-value of 98 or more, a psychometric chroma a-value of from −2.0 to 2.0 and a psychometric chrom... | 08/28/2007 |
| 7122642 | Method for producing crystal polymorphs and crystal polymorphs produced thereby A method to prepare new or unexpected polymorphs of materials which have not been observed, or to obtain a known polymorph under different conditions than those in which it is usually made, by using a laser to cause nucleation and crystal growth to occur in a supers... | 10/17/2006 |
| 6759521 | Polarization switching to control crystal form A method to select and prepare polymorphs of materials by switching the polarization state of light employing non-photochemical laser-induced nucleation. ... | 07/06/2004 |
| 6596838 | Separation method and device with semi-permeable membranes comprising sulphonated polyimides The invention relates to a semi-permeable membrane separation process and device in which the said membranes comprise sulphonated polyimides. The present invention also relates to the use of sulphonated polyimide membranes in separation processes and devices u... | 07/22/2003 |
| 6426406 | Method for using laser light to control crystal form A method to prepare new or unexpected polymorphs of materials which have not been observed, or to obtain a known polymorph under different conditions than those in which it is usually made, by using a laser to cause nucleation and crystal growth to occur ... | 07/30/2002 |
| 6175037 | Process for the preparation of (meth)acrylate esters and polyester (meth)acrylates using microwave energy as a heating source An improved process for preparing acrylate esters, methacrylate esters, polyester acrylates or polyester methacrylates by reacting acrylic or methacrylic acid with a monohydroxy containing compound or a polyhydroxy containing compound in the presence of a... | 01/16/2001 |
| 5994110 | Methods for direct synthesis of compounds having complementary structure to a desired molecular entity and use thereof Compounds which possess a complementary structure to a desired molecule, such as a biomolecule, in particular polymeric or oligomeric compounds, which are useful as in vivo or in vitro diagnostic and therapeutic agents are provided. Also, various methods ... | 11/30/1999 |
| 5919341 | Difluorochloracetyl, dichloracetyl and trichloracetyl chloride preparation A process for preparing chlorodifluoroacetyl chloride from 1,1-difluoro-2,2-dichloroethylene and dichloroacetyl chloride from trichloroethylene or 1,1,2,2-tetrachloroethane, in which the starting compounds are continuously reacted in the gaseous phase wit... | 07/06/1999 |
| 5814193 | Process for the purification of a C2 to C4 carboxylic acid and/or anhydride having halide impurities A process for the purification of a C2 to C4 carboxylic acid and/or an anhydride thereof having halide impurities, which process comprises the steps of (a) exposing the impure acid and/or anhydride to electromagnetic radiation under ... | 09/29/1998 |
| 5708246 | Method of photocatalytic conversion of C-H organics The present invention is the addition of a semiconductor material and energy to the reaction mixture of organic, acid (for example, trifluoroacetate), and oxygen. A transition metal ion may be added to the reaction mixture. The semiconductor material conv... | 01/13/1998 |
| 5663543 | Method for producing a polyfluoropropionyl halide A method for producing a polyfluoropropionyl halide, which is characterized by oxidizing at least one dichloropentafluoropropane selected from 3,3-dichloro-1,1,1,2,2-pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoropropane by oxygen under irradiat... | 09/02/1997 |
| 5569782 | Process for preparing polyfluorochlorocarbonyl chlorides and perfluorocarbonyl chlorides with addition of chlorine A process for preparing polyfluorochloro- and perfluorocarbonyl chlorides, for example for preparing perfluoropropionyl chloride, chlorodifluoroacetyl chloride or trifluoroacetyl chloride, in which starting materials are employed which have a CHCl2 | 10/29/1996 |
| 5545298 | Process for preparing polyfluorocarboxylic acid chlorides and perfluorocarboxylic acid chlorides A process for preparing compounds corresponding to the formula RCFXC(O)Cl, in which X is fluorine or chlorine and R is fluorine or a perfluorinated C1- C10-alkyl group, preferably chlorodifluoroacetyl chloride, by photochemical oxidation of R122 (CF2... | 08/13/1996 |
| 5449801 | Reactive distillation process for free radical halogenation A process for the selective high yield halogenation R--CH3 wherein R is ##STR1## Si(Cl)m (CH3)n, wherein m is 1 to 3, n is 1 to 3 and m+n is 3; phenyl; or phenyl substituted with Cl, Br, F, OR1, ... | 09/12/1995 |
| 5378333 | Halogenated polycarboxycubanes The disclosure describes photochemical synthesis of halogenated polycarboxycubanes from simple carboxycubanes and an oxalyl halide. It is possible to synthesize 6-Chloro-1,2,4,7-tetracarbomethoxycubane and 2-Chloro-1,3,5,7-tetracarbomethoxycubane. Photoch... | 01/03/1995 |
| 5356936 | Process for producing hydrophilic polymer membranes Hydrophilicity of hydrophilic polymers, in the form of heat-crosslinked cings on porous membranes, is increased by exposure to an oxygen plasma, preferably for about 60 seconds. The plasma is generated at an oxygen gas pressure of about 1.5 Torrs in a ch... | 10/18/1994 |
| 5259938 | Process for omega-halo-perfluoro acid chlorides A liquid phase process for preparing ω-haloperfluoroacid chlorides by the photo oxidation of polyfluoroalkyl mono- and di-chloromethanes in the presence of chlorine using light wavelengths greater than 280 nm.... | 11/09/1993 |
| 5233075 | Process for the preparation of aromatic carboxylic acid esters A process comprising preparing an aromatic carboxylic ester and an alkyl iodide by carboxylating an aromatic iodide in the presence of an alkylating agent and a catalytic amount of a transition metal under aromatic carboxylic ester and alkyl iodide formin... | 08/03/1993 |
| 5153352 | Process for preparation of intermediates of carbocyclic nucleoside analogs A compound of the formula: ##STR1## wherein A is a purin-9-yl group, a heterocyclic isostere of a purin-9-yl group, a pyrimidin-1-yl group or a heterocyclic isostere of a pyrimidin-1-yl group; E is hydrogen, --CH2 OH or --OH; and G and D ... | 10/06/1992 |
| 5120412 | Preparation of hypericin A process for preparing hypericin comprises oxidative dimerization of emodin anthrone and conversion of the intermediate protohypericin to hypericin by irradiation with visible light.... | 06/09/1992 |
| 4976834 | Asymmetric photochemical reaction process An optically active substance having an optical purity of at least 50% e.e. is obtained by an asymmetric photochemical reaction by converting a starting, achiral material in a chiral crystalline form and irradiating light to the chiral crystalline form to... | 12/11/1990 |
| 4906343 | Process for the photochemical production of -aryl propionic acid The invention resides in a novel photochemical process for the production of -aryl propionic acids by the subjection of a solution in an organic solvent of the corresponding -haloaryl alkyl ketones to irradiation with light having a waveleng... | 03/06/1990 |
| 4900413 | Process for direct carbonylation of hydrocarbons A process is disclosed, for the manufacture of carbonylated products and/or olefins by reacting hydrocarbons with carbon monoxide in the presence of a transition metal complex, under irradiation with light.... | 02/13/1990 |
| 4898655 | Method for racemization of optically active chrysanthemic acid or its derivatives Optically active chrysanthemic acid or its derivatives of the formula ##STR1## (wherein X represents a hydroxyl group, a halogen atom, a C1-20 alkoxy group or a 2,2-dimethyl-3-isobutenyl-cyclopropane carboxyl group and * mark shows asymmet... | 02/06/1990 |
| 4877501 | Process for fabrication of lipid microstructures Method and process for forming selected microstructures having predetermined shape and dimension from surfactants comprising the steps of: selecting a lipid which self aggregates into a predetermined microstructure selected from the group of helices and t... | 10/31/1989 |
| 4874488 | Photochemical dimerization and functionalization of alkanes, ethers, primary and secondary alcohols, phosphine oxides and silanes The space-time yield and/or the selectivity of the photochemical dimerization of alkanes, ethers, primary and secondary alcohols, phosphine oxides and primary, secondary and tertiary silanes with Hg and U.V. light is enhanced by refluxing the substrate in... | 10/17/1989 |
| 4871485 | Continuous hydrogenation of unsaturated oils Improvements in determining and controlling a continuous hydrogenation process comprising the obtaining of viscosity operating curves and opacity operating curves for comparison to known hydrogen unsaturation curves and plasticity characteristics. With im... | 10/03/1989 |
| 4855025 | Polyfluoro compounds and method for preparing them This invention relates to compounds which simultaneously contain a perfluorinated chain and a hydrogenated chain and which correspond to the general formula: ##STR1## in which RF is a perfluoroalkyl radical, m an integer from 0 to 2, ... | 08/08/1989 |
| 4849076 | Continuous oxidation method A method for oxidizing a substrate which is oxidizable by singlet oxygen is discolded. The first step of the method comprises establishing a flow to and from each of a plurality of successive closed zones, each of which zones (a) contains a quantity of a ... | 07/18/1989 |
| 4845265 | Polyfunctional vinyl ether terminated ester oligomers There are described vinyl ether terminated ester oligomers which cure or polymerize particularly rapidly, especially by cationic polymerization which is radiation induced in the presence of an onium salt. The oligomeric units arise from the reaction of a ... | 07/04/1989 |
| 4839008 | Homogeneous catalytic photochemical functionalization of alkanes by polyoxometalates A method for functionalizing alkanes, which comprises: (a) combining one or a mixture of alkanes with a photochemically active polyoxometalate compound to obtain a reaction medium; (b) allowing said photochemically active polyoxometalate compound to catal... | 06/13/1989 |
| 4792632 | Bisacylphosphine oxides, the preparation and use thereof Bisacylphosphine oxides of the general formula ##STR1## wherein R1 stands, for example, for a straight-chain or branched C1-18 alkyl radical, a cyclohexyl, cyclopentyl, phenyl, naphthyl, or biphenylyl radical, a cyclopentyl, cyclohex... | 12/20/1988 |
| 4737593 | Bisacylphosphine oxides, the preparation and use thereof Bisacylphosphine oxides of the general formula ##STR1## wherein R1 stands, for example, for a straight-chain or branched C1-18 alkyl radical, a cyclohexyl, cyclopentyl, phenyl, naphthyl, or biphenylyl radical, a cyclopentyl, cyclohex... | 04/12/1988 |
| 4668356 | Photolytic process for the formation of carbon-containing free radicals and its applications to free radical polymerization in particular Process for the formation of carbon-containing free radicals R., which optionally include functional groups, wherein thermal and/or photochemical energy is supplied to a thiocarbonyl-containing ester corresponding to the general formula (I): ##STR1##... | 05/26/1987 |
| 4595470 | Process for the preparation of benzene polycarboxylic acids A benzene polycarboxylic acid represented by the formula: ##STR1## wherein n is an integer of 2 or 3, can be obtained under mild conditions with a high yield and with scarce formation of by-product by reacting a monochlorobenzene polycarboxylic acid ... | 06/17/1986 |
| 4523981 | Means and method for reducing carbon dioxide to provide a product A process for reducing carbon dioxide to at least one useful product includes two redox couple electrolyte solutions separated by a first membrane having photosensitizers. The carbon dioxide to be reduced is separated from one of the redox couple electrol... | 06/18/1985 |
| 4478699 | Photosynthetic solar energy collector and process for its use A device for the photosynthetic reduction of carbon dioxide and water by sunlight to formic acid, formaldehyde and methanol in the presence of semiconducting photoactive materials. Using preferred compositions of photoactive materials, selected from oxide... | 10/23/1984 |
| 4466870 | Organic sonochemistry process The method of causing or promoting chemical changes involving the step of subjecting reactants to ultrasonic energy as a key treatment step, including methods of: (1) reducing aryl halides by treating a mixture of aryl halide and lithium aluminum hydride ... | 08/21/1984 |
| 4451342 | Light driven photocatalytic process A method for the light driven photocatalytic reduction of carbon dioxide or the bicarbonate ion to one or more compounds which comprises contacting certain metal compounds with the carbon dioxide and/or bicarbonate ion in the absence of separate physical ... | 05/29/1984 |
| 4427508 | Light driven photocatalytic process A method for the light driven photocatalytic reduction of carbon dioxide or the bicarbonate ion to one or more compounds which comprises contacting silicon with the carbon dioxide and/or bicarbonate ion in the absence of separate physical electrolyte and ... | 01/24/1984 |
