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7238300 |
Process for subjecting to actinic radiation and storing an oxygen scavenger, and a stored oxygen scavenger
A method comprises subjecting ant oxygen scavenger to actinic radiation; and then optionally storing the oxygen scavenger in a container, the container configured such that the oxygen scavenger...
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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...
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6989467 |
Microwave induced process for the preparation of substituted 4-vinylphenols
The present invention relates to “a microwave induced process for the preparation of 4-vinylphenols or its derivatives” in which commercially important FEMA GRAS approved perfumery and...
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6946061 |
Regeneration of a working solution in a hydrogen peroxide production process
The invention relates to a method of regenerating hydrogenated and/or oxygenated alkyl anthraquinones and/or alkyl anthrahydroquinones to alkyl anthraquinones and/or alkyl anthrahydroquinones,...
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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.
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6749727 |
Hydrogenation of a working solution in a hydrogen peroxide production process
A method of hydrogenating alkyl anthraquinones and/or alkyl hydroanthraquinones to alkyl anthrahydroquinones and/or alkyl hydroanthrahydroquinones is disclosed. The reaction is carried out in the...
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6733586 |
High throughput non-photochemical laser induced nucleation
A method for the high-throughput non-photochemical laser induced nucleation of crystals from aged supersaturated solutions in which short high-intensity laser pulses are used to induce nucleation...
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6656328 |
Process for preparation of polyhydric alcohols
A process for preparing a polyhydric alcohol according to the invention comprises subjecting a polyhydric alcohol compound having protected hydroxy group(s) to microwave irradiation in the presence...
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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...
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6328854 |
Method of and apparatus for manufacturing methanol
A porous tube is positioned coaxially around and in axial alignment with a tubular lamp forming an annulus therebetween. Methane is directed through the porous tube and forms submicron size bubbles...
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6267849 |
Method for the photocatalytic conversion of gas hydrates
A method for converting methane hydrates to methanol, as well as hydrogen, through exposure to light. The process includes conversion of methane hydrates by light where a radical initiator has been...
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6156211 |
Enhanced photocatalytic conversion of methane to methanol using a porous semiconductor membrane
A method and apparatus for the conversion of methane in solution or gas provides photochemical conversion in a unique two-phase or three-phase boundary system formed in each pore of a semiconductor...
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5770785 |
Apparatus and method for removing carbon dioxide contained in exhaust gas
A hydrogen source and carbon dioxide are activated by irradiating a high energy beam onto the hydrogen source formed of hydrogen gas and/or a gaseous hydrogen compound, and onto exhaust gas...
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5720858 |
Method for the photocatalytic conversion of methane
A method for converting methane to methanol is provided comprising subjecting the methane to visible light in the presence of a catalyst and an electron transfer agent. Another embodiment of the...
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5620569 |
Process for the photooxidation of terpene olefins
In the photooxidation of terpene olefins, fewer by-products and higher conversion rates are obtained if a very high irradiation intensity is chosen.
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5482599 |
Photochemical method for converting carbon dioxide gas to organic substances
Fine particles of ZnO are subjected to heat treatment at 400° C. for four hours under vacuum to activate the surfaces thereof, the activated ZnO particles are brought into contact with saturated...
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5441612 |
Radiation-enhanced recovery of maltol
The yield and recovery of desirable aromatic principles such as maltol, from source material and especially from plant material, are improved by irradiating the source material with gamma radiation...
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5436401 |
22-oxacholecalciferol derivative and process for preparing the same
A 22-oxacholecalciferol derivative represented by formula (I): ##STR1## wherein R 1 represents a hydrogen atom or a hydroxyl group; and R 2 and R 3 , which may be the same or different, each...
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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...
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5345003 |
Method for preparing 2,3-dichloro-1-propanol and 3-chloro-1-propanol
A method for preparing 2,3-dichloro-1-propanol and 3-chloro-1-propanol is here disclosed which comprises the step of reacting 1,2-dichloroethane with methanol by the irradiation of light in the...
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5326440 |
Photooxidation of hydrocarbons
Photooxidation of cyclohexene or tetralin is effected preferably in the presence of a photosensitizer such as an aliphatic ketone by light of wave length of about 2000 Å-7000 Å to form...
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5304291 |
Method of preparing 9beta, 10alpha-5,7-diene steroids
The invention relates to a method of preparing a 9beta,10alpha-5,7-diene steroid by irradiating the corresponding 9alpha,10beta-5,7-diene steroid with filtered ultraviolet light from an indium lamp.
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5215634 |
Microwave induced catalytic conversion of methane and a hydrating agent to C.sub.3 oxygenates
A process is provided for selectively converting methane and a hydrating agent to C 3 to oxygenates. More particularly, methane is reacted with water in the presence of a nickel metal powder...
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5104504 |
Method for the preparation of an alcohol from hydrocarbon
A efficient photochemical method for the preparation of an alcohol compound, e.g., benzyl alcohol, from a non-olefin hydrocarbon compound, e.g., benzene, was proposed in which a mixture of the...
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5104503 |
Photochemical dimerization of organic compounds
At least one of selectivity and reaction rate of photosensitized vapor phase dimerizations, including dehydrodimerizations, hydrodimerizations and cross-dimerizations of saturated and unsaturated...
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5077440 |
Process for the preparation of 3-phenoxybenzylalcohol
In a process for the preparation of 3-phenoxybenzylalcohol, 3-phenoxytoluene is reacted with dibromodimethylhydantoin in a non-polar solvent, followed by hydrolysis of the products of the first...
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5053561 |
Method of isolating trans-1,1,4,4-tetraalkyl-2-butene-1,4-diols
A method of isolating trans-1,1,4,4-tetraalkyl-2-butene-1,4-diols of formula I ##STR1## in which R 1 , R 2 , R 3 and R 4 are the same or different and denote C 1 - to C 5 -alkyl, from mixtures...
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4997988 |
Oxa-organic sulfur compounds, their preparation and use
Oxa-organic sulfur compounds, methods of preparing such compounds and methods of using the compounds as polymer chain length terminating agents are provided. The compounds are prepared by reacting...
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4917784 |
Process for light-driven hydrocarbon oxidation at ambient temperatures
A photochemical reaction for the oxidation of hydrocarbons uses molecular oxygen as the oxidant. A reductive photoredox cycle that uses a tin(IV)- or antimony(V)-porphyrin photosensitizer generates...
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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...
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4900407 |
Method for deoxygenation of alcohols
In a method for deoxygenating the secondary and/or tertiary OH group(s) in an alcohol having such OH group(s), a characteristic feature thereof is that the alcohol having the OH group(s) is first...
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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...
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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...
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4832807 |
Phosphorylation of alcohols
Phosphorylation of alcohols by contacting the alcohol with a phosphorous sulphide under the impact of ultrasound. The phosporylated produce can be converted into a metal salt, which is a suitable...
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4806694 |
Polyols
Fluorine-containing polyols obtained by the free radical addition of a fluoro-olefin having the general formula: ##STR1## wherein Y represents F and Z represents Cl or F(CF 2 )n--wherein n is an...
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4749726 |
Internal stabilization of polycarbonate resins by two stage radiation process
A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first...
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4596643 |
Cis-trans isomerization of olefinic compounds by photoinduced catalysis
Method of isomerizing an olefin by photoinduced catalysis utilizing COS and a photosensitizer therefor. The invention is particularly applicable for the isomerization of nerol to geraniol.
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4571290 |
Process for the selective oxidation of olefins with photochemical illumination of semiconductor powder suspensions
A process for the selective oxidation of olefins comprises the steps of forming a suspension of semiconductor powder in a solvent media, adding an olefin to the solvent media in the presence of an...
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4571289 |
Photochemical process for the production of alkylene glycols
Alkylene glycols are prepared by reaction of an alcohol with formaldehyde and an organic peroxide having a formula R--O--O--R 1 where R and R 1 are independently either alkyl or aralkyl groups...
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4545872 |
Method for reducing carbon dioxide to provide a product
A process and apparatus 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...
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4532020 |
Process for preparing a β-(fluoroalkyl or fluoroalkenyl)-β-hydroxyalkyne
A process for preparing a β-(fluoroalkyl or fluoroalkenyl)-β-hydroxyalkyne represented by the formula ##STR1## wherein R f represents a fluoroalkyl or fluoroalkenyl group and R represents an...
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4515667 |
Novel catalysts and processes for the photochemical decarboxylation of alpha-hydroxy carboxylic acids
Alpha-hydroxy carboxylic acids, such as lactic acid and mandelic acid, are photochemically converted to form high yields of the corresponding alcohol by irradiating a solution containing the...
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4484993 |
Process for producing fluorine-containing organic compound
A process for producing fluorine-containing organic compounds characterized in that fluorine-containing aliphatic iodides which comprise at least one selected from the group of R f I, R f ZnI and...
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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...
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4451343 |
Photo-initiators for decarboxylation reactions
A process is provided for the selective photochemical decarboxylation of alpha-hydroxy carboxylic acids to the corresponding alcohols. The process is enhanced with the use of photo-initiator...
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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...
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4450059 |
Photochemical decarboxylation of a metal salt of an alpha-hydroxy carboxylic acid
A process is provided for the photochemical decarboxylation of a metal salt of an alpha-hydroxy carboxylic acid to form the corresponding alcohol wherein the alpha-hydroxy carboxylic acid metal...
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4436940 |
Photochemical method for preparing low molecular weight olefin polymers and copolymers of 3-butene-1-ol
Low molecular weight olefin polymers and copolymers of 3-butene-1-ol of molecular weights within range of from about 200 to about 4000.
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4338173 |
Catalytic isomerization process using photo-induced deligandation
A process is provided for inducing a catalytic isomerization reaction. The process involves exposing to optical radiation a gaseous mixture including a reactant unsaturated hydrocarbon and a...
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4338170 |
Isomerization of β-γ-unsaturated alcohol or its ester
A cis-trans isomerization of a cis-β-γ-unsaturated alcohol or its ester having the formula ##STR1## wherein R 1 represents hydrogen atom or a C 1 -C 5 alkyl group; X represents hydrogen atom...
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