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| Number | Title | Issue Date |
| 8129570 | Process for the preparation of 1,4-dialkyl-2,3-diol-1,4-butanedione The present invention relates to a process for the preparation of compounds of a 1,4-dialkyl-2,3-diol-1,4-butanedione by a acidic aldol condensation between an alkyl glyoxal and an α-hydroxy ketone. ... | 03/06/2012 |
| 7385089 | Fluorochemical ketone compounds and processes for their use A fluorochemical ketone compound consists of two terminal, branched, independently fluoroalkylcarbonyl or perfluoroalkylcarbonyl groups and an intervening linear perfluoropolyether segment, each of the terminal groups optionally comprising at least one catenated het... | 06/10/2008 |
| 7193119 | Process for producing fluorinated alkyl ether To provide a process for producing a fluorinated alkyl ether, whereby a sufficient reaction rate can be attained even under mild reaction conditions, and a post-process such as distillation after the reaction can be efficiently carried out. A process for prod... | 03/20/2007 |
| 6362379 | Method of making chlorofluoroethers A method is provided for preparation of chlorofluoroethers ClCF2 CFClOR8f and Cl2 CFCFClOR8f by direct fluorination of Cl2 CHCH2 OR8 and Cl3 CCH2... | 03/26/2002 |
| 5955562 | Surface derivatization of polyketones polymers A alternating aliphatic polyketone polymer is surface derivatized to alter the surface properties of an article without affecting the bulk properties of the polymer it is made from. Derivitization may be done with reducing agents and/or silylating agents.... | 09/21/1999 |
| 5580996 | Oxygen-containing aliphatic compounds and their use as intermediates for the preparation of 4-hydroxy-2, 5-dimethyl-3(2H)-furanone The compounds of the invention are characterised by the formulae ##STR1## wherein index p represents an integer equal to 2 or 3 and q can take the value zero or 1, with the provision that p+q=3. Said compounds are obtained from hex-3-yne-2,5-diol fol... | 12/03/1996 |
| 5527968 | Process for the production of modified acrylic monomers A hydroxy-terminated linear carbonate is produced by reacting a cyclic alkylene carbonate such as neopentyl glycol carbonate with a substance having at least one alcoholic hydroxyl group in the presence of a catalyst. Mono- or polyhydric alphatic alcohols... | 06/18/1996 |
| 5475145 | ଲ-diketones, processes for making ଲ-diketones and use of ଲ-diketones as stabilizers for PVC The present invention is directed to compositions containing novel beta-diketones of formula (I) and formula (II), R1 COCH2 COR2 (I) R2 COCH2 COR2 ... | 12/12/1995 |
| 5264634 | Volatile alkaline earth metal complex and its use An alkaline earth metal chelate complex of 2,2,6,6-tetramethylheptanedione of the formula (I) M2+ (C11 H19 O2)-2.L.sub.k (I) is described, in which M is calcium, strontium or barium, L is a ligand ... | 11/23/1993 |
| 5102581 | Process for the preparation of pseudoionone using oxidative decarboxylation Process for the preparation of: ##STR1## by oxidative decarboxylation of an allyl ଲ-ketoester: ##STR2## in an organic solvent, in the presence of a palladium-based catalyst. The organic solvent selected from an amide, a nitrile, or a dinit... | 04/07/1992 |
| 5080834 | Branched ether esters as viscosity index modifiers The present invention deals with novel internal branched ether esters based upon novel ether alcohols. These materials are useful as viscosity index modifiers where outstanding liquidity, resistance to oxidation, and minimal variation in viscosity as a fu... | 01/14/1992 |
| 5071898 | Propane-1,3-dione derivatives and their use as stabilizers for polymers containing chlorine Composition containing a) a polymer containing chlorine and b) at least one compound of the formula I ##STR1## in which R1 is C1 -C10 alkyl, C2 -C10 hydroxyalkyl, phenyl, hydroxyphenyl, C7 | 12/10/1991 |
| 5037944 | Resin compositions Novel thermosetting resins are produced from low molecular weight linear alternating polymers of carbon monoxide and a suitable curing agent. The resin compositions are particularly useful as coatings.... | 08/06/1991 |
| 4992504 | Ether-containing or thioether-containing 1,3-diketones and the use thereof as stabilizers for chlorine-containing polymers Composition containing a chlorine-containing polymer and at least one compound of the formula IA ##STR1## in which R1 and R3 independently of one another are C1 -C12 alkyl, phenyl, phenyl which is substitut... | 02/12/1991 |
| 4898986 | Inosose derivatives, production and use thereof Disclosed is a novel inosose compound represented by the general formula: ##STR1## wherein X1 and X2 are both halogen; X1 is hydrogen and X2 is halogen; or X1 is --SQ1 and X2 is ... | 02/06/1990 |
| 4657956 | Compounds useful as stabilizing agents for rubber vulcanizates Additives for rubber compositions, giving vulcanizates having improved retention of optimum physical properties, are compounds having the formula R--S--B--S--R where B is an organic bridging group and R is an electron-withdrawing group, for example CN, CC... | 04/14/1987 |
| 4647413 | Perfluoropolyether oligomers and polymers Perfluoropolyether oligomers or block polymers, having a backbone with one or a plurality of perfluoropolyether segments each consisting essentially of (1) at least one perfluoroisopropyleneoxy unit, (2) a bis(perfluoromethyleneoxy-terminated) unit, and (... | 03/03/1987 |
| 4524031 | Fluorosulfatoperfluorocarbonyl compounds A perfluorocarbonyl compound of the formula ##STR1## wherein Rf is perfluoroalkyl having 1 to 10 carbon atoms, R'f is perfluoroalkylene having 1 to 10 carbon atoms, R is fluorine, chlorine, perfluoroalkyl having 1 to 10 carbon atoms, or i... | 06/18/1985 |
| 4468353 | Method of preparing alkoxymethylene compounds An improvement in the alkoxylation of a compound having a reactive methylene group by contacting said compound with an orthoformic acid trialkyl ester in the presence of a catalyst, the improvement residing in employing at least 1.6 moles of orthoformic a... | 08/28/1984 |
| 4343953 | Method for preparing 4-hydroxy-3-methyl-2-(2-propynyl)-2-cyclopentenolone The present invention relates to a novel method for producing cyclopentenolone of the formula (I), ##STR1## which is a useful intermediate for producing agricultural chemicals, which comprises reacting an acetonedicarboxylic ester of the formula (VII... | 08/10/1982 |
| 4310465 | Synthesis of vitamin E and quinone intermediates A synthesis of Vitamin E has the condensation of 2,4-pentanediene and 1,2-epoxy-2,6,10,14-tetramethylpentadecane including intermediates in this synthesis which uses base catalyzed condensations of aliphatic compounds to construct the Vitamin E molecule f... | 01/12/1982 |
| 4277418 | Method of preparing alkoxymethylene compounds An improvement in the alkoxylation of a compound having a reactive methylene group by contacting said compound with an orthoformic acid trialkyl ester in the presence of a catalyst, the improvement residing in employing at least 1.6 moles of orthoformic a... | 07/07/1981 |
| 4235823 | Preparation of diketones Diketones are prepared by oxidizing glycols in the presence of a silver catalyst and/or copper catalyst of a specific particle size, under specific temperature conditions and with a specific composition of the catalyst. The end products are starting mater... | 11/25/1980 |
| 4201726 | Synthesis of Vitamin E A synthesis of Vitamin E has the condensation of 2,4-pentanediene and 1,2-epoxy-2,6,10,14-tetramethylpentadecane including intermediates in this synthesis which uses base catalyzed condensations of aliphatic compounds to construct the Vitamin E molecule f... | 05/06/1980 |
| 4127608 | Synthesis of Vitamin E A synthesis of Vitamin E has the condensation of 2,4-pentanediene and 1,2-epoxy-2,6,10,14-tetramethylpentadecane including intermediates in this synthesis which uses base catalyzed condensations of aliphatic compounds to construct the Vitamin E molecule f... | 11/28/1978 |
| 4082717 | Preparation of gamma-pyrones 2-METHYL-3-HYDROXY-4H-pyran-4-one is prepared by contacting 1(2-furyl)-1-ethanol in aqueous solution with two equivalents of a halogen oxidant at room temperature and then heating until the hydrolysis of the formed 4-halo-dihydropyran intermediate is subs... | 04/04/1978 |
| 4066650 | Keto-aldehyde-amine addition products and method of making same Addition products of a mono-substituted keto-aldehyde compound with a secondary amine. The compounds have the formula ##STR1## wherein R1 stands for various organic radicals as defined in the body of the specification and X is a 4-, 5- or ... | 01/03/1978 |
