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| Number | Title | Issue Date |
| 7361794 | Zone reactor In a method of converting alkanes to their corresponding alcohols and ethers a vessel comprises a hollow, unsegregated interior defined first, second, and third zones. In a first embodiment of the invention oxygen reacts with metal bromide in the first zone to provi... | 04/22/2008 |
| 7351854 | Method of manufacturing 1-chloro-2-methyl-4-acyloxy-2-butene derivatives 1-Chloro-2-methyl-4-acyloxy-2-butene derivatives can be synthesized in good yields and high purity starting from isoprene and employing a chlorohydrin formation reaction in a system made of N-chloroisocyanuric acid derivatives and water, followed by esterification a... | 04/01/2008 |
| 7288670 | Synthesis of N-[N-(3,3-dimethylbutyl)-L-α-aspartyl]-L-phenylalanine 1-methyl ester using 3,3-dimethylbutyraldehyde precursors N-[N-(3,3-dimethylbutyl)-L-α-aspartyl]-L-phenylalanine 1-methyl ester is produced by hydrogenation of L-α-aspartyl-L-phenylalanine 1-methyl ester and 3,3-dimethylbutyraldehyde produced in situ by the hydrolysis or cleavage of a 3,3-dimethylbutyraldehyde precursor.... | 10/30/2007 |
| 7230150 | Zone reactor In a method of converting alkanes to their corresponding alcohols, ethers, olefins, and other hydrocarbons, a vessel comprises a hollow, unsegregated interior defined first, second, and third zones. In a first embodiment of the invention oxygen reacts with metal hal... | 06/12/2007 |
| 7161050 | Method and apparatus for synthesizing olefins, alcohols, ethers, and aldehydes A reactant selected from the group consisting of alkanes, alkenes, alkynes, dienes, and aromatics is reacted with a halide selected from the group including chlorine, bromine, and iodine to form a first reaction product. The first reaction product is reacted with a ... | 01/09/2007 |
| 7161030 | Hydrofluoroethers having at least one hydrogenated-OCFX'CHend group wherein X′=F, CF and their preparation process Hydrofluoroethers of formula: T-CFX′—O—Rf—CFX-T′ (II) wherein: T=CH3; X, X′, equal to or different from each other, are selected between F, CF3;... | 01/09/2007 |
| 7148390 | Integrated process for synthesizing alcohols, ethers, aldehydes, and olefins from alkanes Alcohols, ethers, aldehydes, and olefins are manufactured from alkanes by mixing an alkane and a halogen selected from the group including chlorine, bromine, and iodine in a reactor to form alkyl halide and hydrogen halide. The alkyl halide only or the alkyl halide ... | 12/12/2006 |
| 7084308 | Manufacture of formaldehyde from methyl bromide A process is provided for the manufacture of formaldehyde from methyl bromide. In the process, methyl bromide is oxidized with air over a catalyst to give formaldehyde and hydrogen bromide. In a preferred embodiment of the invention, a mixture of two different catal... | 08/01/2006 |
| 7053238 | Process for producing fluorinated polyvalent carbonyl compound A fluorinated polyvalent carbonyl compound is produced by an economically advantageous method from inexpensive materials without requiring a complicated synthetic process step. Namely, the present invention comprises reacting a polyvalent alcohol having at least two... | 05/30/2006 |
| 7019182 | Method of hydrocarbon preservation and environmental protection Gas phase hydrocarbons resulting from the operation of offshore petroleum wells are converted into corresponding liquid products which are mixed with liquid phased hydrocarbons resulting from operation of the offshore petroleum well for delivery therewith. ... | 03/28/2006 |
| 6984759 | Process for the preparation of perfluoropolyethers having aldehyde, alcohol, amine end groups by catalytic reduction Process for the perfluoropolyether preparation having reactive end groups —CH2NH2, —CHO, —CH2OH, by reduction of the corresponding perfluoropolyethers having —CN, —COCl, —CHO end groups by using gaseous hydrogen in the pr... | 01/10/2006 |
| 6822123 | Formaldehyde process A process is provided for the production of formaldehyde from methyl chloride. In the process methyl chloride is oxidized with air over a catalyst to give formaldehyde and hydrogen chloride. In a preferred embodiment of the invention, a mixture of two different cata... | 11/23/2004 |
| 6713655 | Integrated process for synthesizing alcohols, ethers, aldehydes, and olefins from alkanes Alcohols, ethers, aldehydes, and olefins are manufactured from alkanes by mixing an alkane and a halogen selected from the group including chlorine, bromine, and iodine in a reactor to form alkyl halide and hydrogen halide. The alkyl halide only or the alkyl halide ... | 03/30/2004 |
| 6403838 | Process for preparing 2,7-dimethyl-2,4,6-octatriene-1,8-dial A process for making 2,7-dimethyl-2,4,6-octatrien-1,8-dial starting form an allylic halide is described. The process steps include aldehyde protection, conversion to a sulfide, oxidation to an allylic sulfone followed by a Ramberg-Backlund reaction and hy... | 06/11/2002 |
| 6399835 | Process for electrophilic aromatic substitution Processes for the electrophilic substitution of aromatic compounds, such as alkylation, with a desired substituent are disclosed. The processes include contacting the aromatic compound, a precursor of the desired substituent and an aqueous reagent contain... | 06/04/2002 |
| 6198006 | Process for the manufacture of citral A process for the manufacture of citral is provided by the catalyzed rearrangement of dehydrolinalool to citral. The rearrangement is carried out in the presence of a molybdenum compound of the general formula MoO2 X2 wherein X signi... | 03/06/2001 |
| 6191313 | Process for the manufacture of dihydrocitral A process for the manufacture of dihydrocitral, a valuable intermediate, through the catalyzed rearrangement of dihydrodehydrolinalool by carrying out the rearrangement in the presence of a molybdenum compound of the general formula MoO2 X... | 02/20/2001 |
| 5994593 | Synthesis and purification of 3,3-dimethylbutyraldehyde via hydrolysis of 1,1-dichloro-3,3-dimethylbutane or 1-bromo-1-chloro-3,3-dimethylbutane 3,3-Dimethylbutyraldehyde is synthesized via hydrolysis of 1,1-dichloro-3,3-dimethylbutane or 1-bromo-1-chloro-3,3-dimethylbutane in the presence of water and a base and is purified via an aldehyde/bisulfite adduct.... | 11/30/1999 |
| 5977415 | Preparation of 3, 3-dimethylbutyraldehyde from a tert-butyl cation precursor, vinyl chloride and an acidic catalyst This invention provides a method for preparing 3,3-dimethylbutyraldehyde from a tert-butyl cation precursor and vinyl chloride. The tert-butyl cation precursor is contacted with vinyl chloride in the presence of an inorganic acid, and the product is allow... | 11/02/1999 |
| 5905175 | Synthesis and purification of 3,3-dimethylbutyraldehyde via oxidation of 1-chloro-3,3-dimethylbutane with dimethyl sulfoxide 1-chloro-3,3-dimethylbutane is oxidized by dimethyl sulfoxide, in the presence of an effective amount of inorganic bromide or iodide, and in the present of an effective amount of base, to produce 3,3-dimethylbutyraldehyde.... | 05/18/1999 |
| 5679869 | Preparation of aldehydes A process for preparing aldehydes of the general formula I ##STR1## where R1, R2 and R3 are each hydrogen, C1 -C6 -alkyl, C3 -C8 -cycloalkyl, aryl, C7 -C12 ... | 10/21/1997 |
| 5639919 | Intermediates for the preparation of vitamin A and carotenoids and process for their preparation The present invention relates to novel intermediates for the preparation of vitamin A and carotenoids, corresponding to the following formula (I): ##STR1## in which X is a carbon atom; n is equal to 1 or 2; R1, R2 and R3 | 06/17/1997 |
| 5563235 | Process for making fluorinated aldehydes Fluorinated aldehydes are made by reacting a fluorinated acyl chloride with a silicon hydride in the presence of palladium. Also disclosed are fluorinated ether aldehydes and their polymers, a process for making fluorinated aldehydes polymers using titani... | 10/08/1996 |
| 5512652 | Fluorinated aldehyde containing polymers Fluorinated aldehydes are made by reacting a fluorinated acyl chloride with a silicon hydride in the presence of palladium. Also disclosed are fluorinated ether aldehydes and their polymers, a process for making fluorinated aldehydes polymers using titani... | 04/30/1996 |
| 5426240 | Process for the co-production of dichloroacetaldehyde hydrate and chloral A process for producing dichloroacetaldehyde hydrate together with chloral from acetaldehyde or para-aldehyde. The process comprises a step of chlorinating acetaldehyde or para-aldehyde to obtain a chlorinated solution containing dichloroacetaldehyde as a... | 06/20/1995 |
| 5414140 | Process for making fluorinated aldehydes Fluorinated aldehydes are made by reacting a fluorinated acyl chloride with a silicon hydride in the presence of palladium. Also disclosed are fluorinated ether aldehydes and their polymers, a process for making fluorinated aldehydes polymers using titani... | 05/09/1995 |
| 5414139 | Process for the manufacture of monochloroacetaldehyde trimer and chloral A process for manufacturing monochloroacetaldehyde trimer and chloral together by effectively utilizing a raw material acetaldehyde or para-aldehyde. The process comprises a step of chlorinating acetaldehyde or para-aldehyde to produce a chlorinated liqui... | 05/09/1995 |
| 5321166 | Method for the production of aldehydes A process for the manufacture of aldehydes by the catalytic reduction of carboxylic acid halides with hydrogen in the presence of an alkylene oxide.... | 06/14/1994 |
| 5248832 | Chemical process for manufacturing trifluoroacetaldehyde hydrate or trifluoroacetalde hemiacetal A process for the manufacture of trifluoroacetaldehyde, or a hydrate or hemiacetal thereof, which comprises reduction of an ester of trifluoroacetic acid with a borohydride reducing agent in a hydroxylic solvent to form trifluoroacetaldehyde hydrate or he... | 09/28/1993 |
| 5196608 | Use of an allylchloride for preparing an aldehyde The present invention relates to the use of an allylchloride of the general formula ##STR1## wherein R is a C1 -C12 alkyl group or a C2 -C12 alkenyl group, which groups may be substituted with one or more substi... | 03/23/1993 |
| 5059716 | Process for the preparation of aldehydes Aromatic and aliphatic aldehydes can be prepared from the corresponding aromatic or aliphatic carboxylic acids or the esters, anhydrides or halides thereof at elevated temperature by catalytic gas phase hydrogenation using hydrogen if use is made of a cat... | 10/22/1991 |
| 5015780 | Process for the preparation of dihalobutyraldehydes Dihalobutyraldehydes of formula I ##STR1## wherein X and Y are each independently of the other Cl or Br, are obtainable at high rates of conversion and with excellent selectivities by catalytic dehalogenation with hydrogen by carrying out the reactio... | 05/14/1991 |
| 5008462 | Method for preparing monochloroacetaldehyde trimer A method for preparing a monochloroacetaldehyde trimer in a high yield is here disclosed which comprises the steps of dissolving, in an organic solvent, a solution containing monochloroacetaldehyde as the main component, and then trimerizing monochloroace... | 04/16/1991 |
| 4983776 | Process for the preparation of functional fluoro derivatives The invention relates to the synthesis of functional fluoro derivatives and more particularly that of perfluorinated aldehydes of the type RF -CHO where RF denotes a linear or branched perfluoroalkyl radical. A perfluoroalkyl iodide R | 01/08/1991 |
| 4847424 | Method of producing aldehyde compound A carboxylic acid or its ester is reduced by formic acid in the presence of a hydrous metal oxide solid catalyst, to produce a corresponding aldehyde. Using this method, no harmful waste is by-produced, an aldehyde compound can be produced at relatively l... | 07/11/1989 |
| 4837366 | Preparation of polyfluoroaldehydes and polyfluoroacetals A group of polyfluoroaldehydes represented by 3,3,3-trifluoropropanal can be formed with very good selectivity by reacting polyfluoroalkenes represented by 3,3,3-trifluoropropene with water in the presence of a source of divalent palladium. A group of pol... | 06/06/1989 |
| 4825003 | Production process of 2-chloropropionaldehyde A process for the production of 2-chloropropionaldehyde from vinyl chloride, carbon monoxide and hydrogen which comprises using a rhodium compound and a trivalent organic phosphorus compound or the oxide of a trivalent organic phosphorus compound as a cat... | 04/25/1989 |
| 4760196 | Method for preparing an aldehyde or alcohol by reduction of a carboxylic acid The inventive method is particularly advantageous for the preparation of an unsaturated alcohol or aldehyde by the reduction of a corresponding unsaturated carboxylic acid since the unsaturated double bond in the starting acid is not hydrogenated by the r... | 07/26/1988 |
| 4745229 | Process for preparing , ଲ-unsaturated aldehydes A process for preparing ,ଲ-unsaturated aldehydes of the general formula (I) ##STR1## in which R1, R2 and R3 are independently a hydrogen atom, or an alkyl or alkenyl group with or without being substitute... | 05/17/1988 |
| 4691062 | Process for the production of 4-chloro-butanals 4-chloro-butanals of the formula ##STR1## where R is hydrogen or a straight or branched chain alkyl group of 1 to 4 carbon atoms are produced by reacting the corresponding 1,1-dimethoxy-4-hydroxybutane at a temperature between -20° and +80° C.... | 09/01/1987 |
