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| Number | Title | Issue Date |
| 7501545 | Fluorine-containing 3,5-OXO-1,6-heptadiene derivative and method of producing the same A method of producing a compound represented by formula (IV), having: subjecting a compound of formula (I) to fluorination, subjecting the resultant compound to at least one of thermal decomposition and hydrolysis, and subjecting the resultant compound to thermal de... | 03/10/2009 |
| 7339085 | Method for producing 2,7-dimethyl-octa-2,4,6-trienedial The present invention relates to an improved process for preparing 2,7-dimethylocta-2,4,6-trienedial of the formula I, by a) double enol ether condensation of a butenedial bisacetal of the formula II with an en... | 03/04/2008 |
| 7282192 | Mixed metal oxide containing sulfur The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes. ... | 10/16/2007 |
| 7271296 | Method for the production of phytofluene The invention relates to a process for preparing phytofluene of the formula I, where a) a phosphonium salt of the formula II is condensed with an aldehyde of the formula III | 09/18/2007 |
| 7232639 | Monomer having fluorine-containing acetal or ketal structure, polymer thereof, and chemical-amplification-type resist composition as well as process for formation of pattern with use of the same As a polymer exhibiting improved transparency which is suitable for a resist resin used in a chemical-amplification-type resist being applicable for photolithography using exposure light at 180 nm or shorter, this invention provides a polymer comprising a repeating ... | 06/19/2007 |
| 7192546 | Methods of forming shaped articles from suspensions The invention relates to methods of forming shaped articles from suspensions which include ceramic or metallic powder, or from solutions or suspensions which include one or more pharmaceutical substances or other components. The method comprises the steps of: (a) co... | 03/20/2007 |
| 7173158 | Mixed metal oxide containing sulfur The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes. ... | 02/06/2007 |
| 7034094 | Process for preparing fluorine-containing polymer There is provided the process for effectively preparing the fluorine-containing polymer without using CFC and HCFC which have a high polymerization rate and a high ozone depletion potential and a coating film having excellent mechanical properties, solvent resistanc... | 04/25/2006 |
| 7022665 | Acetals of 2,4,7-decatrienal as perfuming or flavoring ingredients The present invention relates to an acetal of formula in which the symbols R1 represent, independently or simultaneously, a linear or branched saturated or unsaturated C1 to C4 hydrocarb... | 04/04/2006 |
| 6919480 | Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether. Namely, it provides a process for preparing a fluorinated acyl fluoride (3), which comprises reacting a compound (1) having a fluorine cont... | 07/19/2005 |
| 6858761 | Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process The present invention provides a process and its utilization in a process comprising the step of carrying out an addition reaction of an alkylene oxide to an addition-receiving substance in the presence of a resin catalyst, thereby producing the addition reaction pr... | 02/22/2005 |
| 6747174 | Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether. Namely, it provides a process for preparing a fluorinated acyl fluoride (3), which comprises reacting a compound (1) having a fluorine cont... | 06/08/2004 |
| 6610892 | Process for preparing 2,7-dimethyl-2,4,6-octatrienal monoacetals The invention relates to a process for preparing 2,7-dimethyl-2,4,6-octatrienal monoacetals of the general formula I ##STR1## which comprises a) condensing an ester phosphonium salt of the general formula II or an ester phosphonate of the general form... | 08/26/2003 |
| 6518464 | Continuous process for the preparation of acetals The present invention relates to a continuous process for the preparation of unsaturated acetals by reacting olefinically unsaturated aliphatic compounds with allyl alcohols in a reaction column, where the reactants are only partially reacted in the react... | 02/11/2003 |
| 6313322 | Method for producing 3-methyl 2-butenal acetals A process for preparing acetals of the formula I ##STR1## where a) the Rs are, independently of one another, a C1 -C20 -alkyl or C3 -C20 -alkenyl radical, or b) the two R radicals together form the members of an unsu... | 11/06/2001 |
| 6291719 | Methods and equipments of using dual functional catalyst of packing type The present invention relates to a method of catalyzing etherification, esterification, hydration, ether cleavage, isomerization alkylation, or other reactions which are catalyzable with an acid or molecular sieve catalyst. Said reactions are conducted us... | 09/18/2001 |
| 6255535 | Fluorine containing allylethers and higher homologs The present invention describes a novel process for the preparation of perfluoro allyl ethers. The process involves providing a hydrogen-containing precursor comprising at least one 1,2-dichloro alkyl ether moiety, fluorinating the precursor to provide a ... | 07/03/2001 |
| 6046367 | Triphenylbis (fluoroalkoxy) phosphoranes and fluorinated ketals Novel triphenylbis(fluoroalkoxy)phosphoranes and a process for their preparation are disclosed. Also disclosed is a process for making fluorinated ketals by reacting phosphoranes with fluorinated ketones.... | 04/04/2000 |
| 5986113 | Process for manufacturing polyene esters and acids A process for the manufacture of polyene esters or polyene acids comprises reacting a polyene O,O-dialkylacetal of di(O,O-dialkylacetal) with a vinylketene acetal or analogue thereof in the presence of a Lewis acid, hydrolyzing the reaction mixture depend... | 11/16/1999 |
| 5739394 | 3,3-dioxy-4,4,4-trifluorobutyric acid derivatives The invention relates to novel 3,3-dioxy-4,4,4-trifluorobutyric acid derivatives of the formula (I) ##STR1## in which R1 and R2 independently of one another represent C1 -C10 -alkyl, or represent cyclohexyl... | 04/14/1998 |
| 5739100 | Cis-3-hexenal-cis-3-hexenyl acetal compound, process for preparing same, and fragrance-or flavor-imparting or fragrance-or flavor-retaining agent and perfume composition containing same A compound represented by formula (1): ##STR1## wherein R is alkyl or other hydrocarbyl, and a fragrance/flavor-imparting agent, a fragrance/flavor-retaining agent, and a perfume composition, each containing this compound as an active ingredient; and... | 04/14/1998 |
| 5731475 | Preparation of cyclopropane esters There is disclosed a process for the preparation of a lower alkyl ester of 3-(2-chloro-3,3,3-trifluoroprop-1-en-1-yl)-2,2-dimethylcyclopropane carboxylic acid which comprises the steps of (a) reacting a compound of formula: CF3 --CXCl--CH(OH)--CH.db... | 03/24/1998 |
| 5710345 | Floorinated polymers and copolymers containing cyclic structures Polymers and copolymers of one or more fluorinated dienes of structure CFX1 .dbd.CX2 --O--CX3 X4 --O--CX2 .dbd.CX1 F, wherein X1 and X2 are F, Cl or H, and X3 an... | 01/20/1998 |
| 5600015 | Assymetric hydrogenation of isoprene derivatives There is described a process for the manufacture of isoprene derivatives of the general formula ##STR1## wherein the asymmetric centres can each individually have the (R)- or (S)-configuration, R represents a residue of the formulae ##STR2## ... | 02/04/1997 |
| 5599848 | Preparation, intermediates for the preparation and the use of a mixture of dodecdienol isomers A process for preparing a mixture of 8E,10E-dodecadienol (Ia), 8E,10Z-dodecadienol (Ib), 8Z,10E-dodecadienol (Ic) and 8Z,10Z-dodecadienol (Id), H3 C--CH.dbd.CH--CH.dbd.CH--(CH2)6 --CH2 --OH (8E,10E=Ia) (8E,10Z=Ib) (8... | 02/04/1997 |
| 5455361 | Process for preparing ketene acetals The invention relates to a process for preparing ketene acetals by dehydrohalogenation of 2-haloaldehyde acetals. If the 2-haloaldehyde acetal is open chain, the dehydrohalogenation is carried out in the presence of an alkali metal hydroxide or alkaline e... | 10/03/1995 |
| 5393867 | Polyether polymers derived from 3,4-epxoy-1-butene Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of a palladium(O) catalyst and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units ... | 02/28/1995 |
| 5338888 | Preparation of E,Z-butenedial bis(dialkyl acetals) An improved process for preparing E,Z-butenedial bis(dialkyl acetals) by reacting the corresponding 2,5-dialkoxy-2,5-dihydrofurans with the corresponding lower alkanols in the presence of an acid at elevated temperature entails carrying out the reaction i... | 08/16/1994 |
| 5149843 | Conjugated diene compounds Conjugated diene compounds of the general formula: ##STR1## which are industrially advantageous intermediates for preparing sarcophytol A useful as an anticarcinogenic promotor or antitumor agent are provided.... | 09/22/1992 |
| 4983748 | Acetals useful for the preparation of polysaccharide derivatives Polysaccharide aldehydes having the formula Sacch--O--CH2 --CH.dbd.CH--CHO, Saach--O--CH2 --C.tbd.C--CHO, ##STR1## starch, cellulose, and gum aldehydes, are useful for imparting wet, dry, or temporary wet strength to paper. They... | 01/08/1991 |
| 4948781 | Novel odorant and/or flavoring substances The invention is concerned with compounds of the formula: ##STR1## wherein: R represents an alkyl group of one to four carbons, an alkenyl group of two to four carbons or a 1-alkoxy-alkyl group of the formula ##STR2## R1,R2... | 08/14/1990 |
| 4876370 | 1,3,5-nonatriene derivatives, their preparation and their use 1,3,5-Nonatriene derivatives of formula: ##STR1## in which R1 and R2, together with the carbon atom to which they are linked, form a carbonyl group, or each of R1 and R2 denotes alkoxy or R1 and ... | 10/24/1989 |
| 4642390 | Process for the manufacture of acetals of chloroacetaldehyde A semi-continuous process for the manufacture of acetals of chloroacetaldehyde is described. In a preferred embodiment of the invention, chloroacetaldehyde dimethyl acetal is prepared by introducing chlorine and vinyl acetate through separate inlets into ... | 02/10/1987 |
| 4631146 | Alpha-tertiary dimethylacetals and their use as fragrant substances The invention relates to 1,1-dimethoxy-2,5-dimethyl-2-vinyl-4-hexene, 1,1-dimethoxy-2,2,5-trimethyl-4-hexene, and 1,1-dimethoxy-2,2-dimethyl-3-phenyl-propane. The invention also relates to the production of these compounds and their use as fragrant substa... | 12/23/1986 |
| 4616095 | Isomer-directed process for producing asymmetric ketones using catalytic claisen rearrangement of allylic ethers, intermediates, and uses of products and intermediates of process in perfumery Described is an isomer-directed process for producing asymmetric ketones defined according to the generic structure: ##STR1## wherein one of Z1 or Z2 is the moiety: ##STR2## and the other of Z1 or Z2 i... | 10/07/1986 |
| 4613706 | Isomer-directed process for producing asymmetric ketones using catalytic Claisen rearrangement of allylic ethers, intermediates, and uses of products and intermediates of process in perfumery Described is an isomer-directed process for producing asymmetric ketones defined according to the generic structure: ##STR1## wherein one of Z1 or Z2 is the moiety: ##STR2## and the other of Z1 or Z2 i... | 09/23/1986 |
| 4579979 | Method for preparation of acetals A method of preparation for acetals utilizing saturated or unsaturated aldehydes, in particular, the preparation of dimethylacetals of acetaldehyde, acrolein and methacrolein. The production of the acetal takes place in a liquid phase in the presence of a... | 04/01/1986 |
| 4570018 | Fluorocyclopropanes A novel chemical, fluorochlorocyclopropane (I) of the following formula: ##STR1## is prepared by the addition of fluorochlorocarbene to the corresponding olefin (II) of the following formula: The compound is a useful intermediate for synthesizing some che... | 02/11/1986 |
| 4532335 | Preparation of ketene acetals by rearrangement of allyl and substituted allyl acetals Allyl acetals and substituted allyl acetals are rearranged to produce ketene acetals by heating the acetals in a solution of an alkali metal alkoxide in an ethylene amine.... | 07/30/1985 |
| 4513144 | Acetal purification with superoxides Trioxane and other acetals are purified by contacting with an alkali metal superoxide, then isolated in a purified form. Optionally, a phase transfer catalyst can be utilized in the purification. Recovered acetals are sufficiently pure for polymerization ... | 04/23/1985 |
