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| Number | Title | Issue Date |
| 8178733 | Method of making chlorohydrins Methods and systems for the preparation of chlorohydrins are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and solubility of olefins into the chlorinating phase. The high shear device may allow for l... | 05/15/2012 |
| 8124814 | Crude glycerol-based product, process for its purification and its use in the manufacture of dichloropropanol The invention relates to a crude glycerol-based product comprising glycerol alkyl ethers, to a purification process comprising a treatment of evaporative concentration, of evaporative crystallization, of distillation, of fractional distillation, of stripping, or of ... | 02/28/2012 |
| 8106246 | Process for the manufacture of dichloropropanol by chlorination of glycerol Process for the manufacture of dichloropropanol in which glycerol is reacted with a chlorinating agent comprising hydrochloric acid in a liquid medium in equilibrium with a vapor phase and in which the condensation of a fraction exhibiting the composition of the vap... | 01/31/2012 |
| 8088957 | Conversion of a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin The present invention relates to a process for converting a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin, by contacting the multihydroxylated-aliphatic hydrocarbon or ester thereof starting material with a source of a superatmospheric p... | 01/03/2012 |
| 7939696 | Process for the manufacture of dichloropropanol by chlorination of glycerol Process for the manufacture of dichloropropanol in which glycerol is reacted with a chlorinating agent comprising hydrochloric acid in a liquid medium in equilibrium with a vapor phase and in which the condensation of a fraction exhibiting the composition of the vap... | 05/10/2011 |
| 7906691 | Method for making chlorohydrin in corrosion-resistant equipment Process for preparing a chlorohydrin, comprising a step in which a polyhydroxylated aliphatic hydrocarbon, an ester of a polyhydroxylated aliphatic hydrocarbon or a mixture thereof is subjected to reaction with a chlorinating agent containing hydrogen chloride and a... | 03/15/2011 |
| 7906692 | Method for making a chlorohydrin by chlorinating a polyhydroxylated aliphatic hydrocarbon Process for preparing a chlorohydrin, comprising the following steps: (a) a polyhydroxylated aliphatic hydrocarbon, an ester of a polyhydroxylated aliphatic hydrocarbon or a mixture thereof whose alkali metal and/or alkaline earth ... | 03/15/2011 |
| 7615670 | Method for making chlorohydrin in liquid phase in the presence of heavy compounds Process for preparing a chlorohydrin, wherein a polyhydroxylated aliphatic hydrocarbon, an ester of a polyhydroxylated aliphatic hydrocarbon or a mixture thereof is subjected to reaction with a chlorinating agent in the presence of a liquid phase comprising heavy co... | 11/10/2009 |
| 7482496 | Method for making chlorohydrins Methods and systems for the preparation of chlorohydrins are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and solubility of olefins into the chlorinating phase. The high shear device may allow for l... | 01/27/2009 |
| 6946566 | Process for preparation of optically active halogeno hydroxypropyl compound and glycidyl compound A process for preparing regioselectively an optically active 1-halogeno-2-hydroxypropyl compound of the following formula; wherein X is halogen atom and Nu is a heteroatom having a substituent,... | 09/20/2005 |
| 6867336 | Method for the continuous production of 2-bromo-2-nitro-1,3-propanediol In a process for the continuous preparation of 2-bromo-2-nitro-1,3-propanediol, nitromethane is firstly reacted with formaldehyde and alkali metal hydroxide and the reaction mixture obtained in this way is subsequently reacted with bromine. ... | 03/15/2005 |
| 6703528 | Process for producing carbonyl or hydroxy compound There are disclosed are a method for producing at least one compound selected from a carbonyl compound and a hydroxy adduct compound by an oxidative cleavage or addition reaction of an olefinic double bond of an olefin compound, which contains rea... | 03/09/2004 |
| 6664430 | Catalysts for the preparation of fluorinated alcohols and process for the preparation of fluorinated alcohols The present invention provides a catalyst for preparing a fluorine-containing alcohol compound, the catalyst having at least one component selected from elements in Group 1B, Group 2B, Group 6A, Group 7A and Group 8 of the periodic table, ions of these el... | 12/16/2003 |
| 6506947 | Fluorinated diol and method for the production thereof The subject-matter of the invention is a fluorinated diol and its process of preparation. The fluorinated diol corresponds to the formula (I): Cn F2n+1 --A--CH2 OCH2 --C(CH2 OH)2 --R in which n has a... | 01/14/2003 |
| 6472570 | Method for the asymmetric dihydroxylation of olefins, using osmium catalysts This invention relates to process for asymmetric dihydroxylation of olefins using osmium catalysts to obtain monofunctional, bifunctional, and/or polyfunctional chiral 1,2-diols of the formula (I) R1 R2 C(OH)--C(OH)R3 R4 | 10/29/2002 |
| 6359155 | Process for the preparation of 3-hydroxytetrahydrofuran An industrial advantage process for producing high-purity 3-hydroxytetrahydrofuran easily and simply, which comprises reducing a 4-halo-3-hydroxybutyric acid ester (1) with a boron hydride compound and/or an aluminum hydride compound as a reducing agent i... | 03/19/2002 |
| 6072088 | Chemical compounds having two trifluoromethyl groups A compound having the formula: CF3 CH2-w (H1-x CH2-y Rm R'n CH1-z)p H2-q CF3 wherein w=0, 1 or 2; x=0 or 1; y=0, 1 or 2; m=0, 1 or 2; n=0 or 1; z=0 or ... | 06/06/2000 |
| 6043400 | Chlorohydrin process This invention is a process for preparing chlorohydrins by reacting a chlorinating species, such as hypochlorous acid, with at least one unsaturated organic compound, such as propylene or butylene, at a pH of greater than 6.0. The chlorinating species is ... | 03/28/2000 |
| 6040464 | Process for the preparation of protected 3-amino-1,2-dihydroxypropane acetal and derivatives thereof A process for producing protected 3-amino-1,2-dihydroxypropane acetal, particularly in chiral forms, for use as an intermediate in the preparation of various 3-carbon compounds which are chiral. In particular, the present invention relates to the process ... | 03/21/2000 |
| 5973214 | Method for producing an optically active 2-alkanol Both enantiomers of optically active 2-alkanol are produced by transesterification reaction of racemic 2-alkanol and aliphatic acid 2,2,2-trichloroethylester in the presence of enzyme derived from Candida antarctica. Both enantiomers of optically active 2... | 10/26/1999 |
| 5760269 | 4,4,4-Trichlorobutyl methanesulfonate The invention provides the novel compound 4,4,4-trichlorobutyl methanesufonate, useful as an intermediate in the production of certain agricultural pesticides, and a process for its manufacture.... | 06/02/1998 |
| 5545767 | Process for preparing 1,3-propanediol 1,3-propanediol is prepared in a process comprising the steps of: contacting ethylene oxide with carbon monoxide and hydrogen in an essentially non-water-miscible solvent in the presence of an effective amount of a non-phosphine-ligated cobalt catalyst and an ... | 08/13/1996 |
| 5463146 | Process for preparing 1,3-propanediol 1,3-propanediol is prepared in a process comprising the steps of: (a) contacting ethylene oxide with carbon monoxide and hydrogen in an essentially non-water-miscible solvent in the presence of an effective amount of a non-phosphine-ligated cobalt catalyst and... | 10/31/1995 |
| 5463144 | Process for preparing 1,3-propanediol 1,3-propanediol is prepared in a process comprising the steps of: contacting ethylene oxide with carbon monoxide and hydrogen in an essentially non-water-miscible solvent in the presence of an effective amount of a non-phosphine-ligated cobalt catalyst and an ... | 10/31/1995 |
| 5457246 | Process and arrangement for recovery of polyol production wastes A process and arrangement for separating and recovering polyol production wastes, including polyol, potassium or sodium phosphate and magnesium silicates, is disclosed. According to the invention, the polyol product waste and caustic salt are combined in ... | 10/10/1995 |
| 5316686 | Perfluoroalkylether tertiary alcohols Perfluoroalkylether (PFAE) tertiary mono- and poly-alcohols of the general structure: ##STR1## wherein R1 and R3 represent perfluoroalkyl groups having from one to fifty carbon atoms or PFAE groups having 2-50 carbon atoms and 1... | 05/31/1994 |
| 5284982 | Method for the cyclooligomerization of 3-hydroxy-1 alkynes The invention relates to a method of cyclooligomerization of 3-hydroxy-1-alkynes having 4-20 C atoms, particularly cyclooligomerization of 3-methyl-1-butyne-3-ol to yield 1,3,5-tris(-hydroxyisopropyl)-benzene, with the aid of nickel-containing... | 02/08/1994 |
| 5262573 | Halomagnesium hydrocarbyloxide composition and process for preparation A substantially pure, chemically distinct halomagnesium alkoxide compound is formed by reaction of a dihydrocarbylmagnesium compound with a compound which will replace an hydrocarbyl functionality thereon with an hydrocarbyloxy functionality and thereafte... | 11/16/1993 |
| 5250744 | Process for the preparation of 2-aryl-1,3-propanediols Process for the production of 2-aryl-1,3-propanediols and novel intermediate compounds produced thereby.... | 10/05/1993 |
| 5146011 | Preparation of chlorohydrins Described herein is a process for the preparation of chlorohydrins by reacting a concentrated, aqueous solution of hypochlorous acid with at least one unsaturated organic compound having from 2 to about 10 carbon atoms and selected from the group consisti... | 09/08/1992 |
| 5126071 | Optically active compound, process for producing same and liquid crystal composition containing same An optically active functional compound represented by the following formula (1) is disclosed: ##STR1## wherein R denotes an alkyl group having 1-14 carbon atoms; --X-- denotes ##STR2## Y denotes a single bond, ##STR3## or --O--; n=0, ... | 06/30/1992 |
| 5053559 | Cleavage of 1,2,4-trioxanes 1,2,4-Trioxanes are subjected to reductive cleavage, thereby to produce a 1,2-diol and carbonyl compound. The process has applications both in the synthesis of 1,2-diols and the protection, in the course of organic synthesis, of carbonyl compounds.... | 10/01/1991 |
| 4996375 | Vitamin E intermediates and a process for their manufacture and conversion into Vitamin E Novel methyl carbinol derivatives of Vitamin E and a method for their manufacture.... | 02/26/1991 |
| 4940823 | Process for optically active 3-thiolanyl sulfonate esters Intermediates and a stepwise process for the conversion of an alkyl 4-chloro-3R-hydroxybutyrate to optically active compounds of the formula ##STR1## wherein R is (C1 -C3) alkyl, phenyl or tolyl. The latter compounds are in turn... | 07/10/1990 |
| 4933510 | Propanol derivatives Propanol derivatives of formula (I) wherein X is a leaving group; R1 is H or a protecting group; and R2 is H, and R3 is a group--CH2 Y wherein Y is a leaving group; or R2 and R3 together fo... | 06/12/1990 |
| 4929775 | Process for preparing brominated pentaerythritols This invention relates to a process for preparing high purity dibromoneopentyl glycol which comprises: (a) charging a vessel with pentaerythritol, a first portion of aqueous HBr and a catalyst; (b) maintaining the liquid contents in the vessel at a temper... | 05/29/1990 |
| 4913848 | Process for producing a high purity dibromoneopentyl glycol product This invention relates to a process for treating a first product which contains monobromopentaerythritol, dibromoneopentyl glycol and tribromoneopentyl alcohol to yield a second product having a dibromoneopentyl glycol content, on a weight percent basis, ... | 04/03/1990 |
| 4912265 | Phase transfer catalyzed process for borohydride reductions of carbonyl compounds A process for the reduction of carbonyl compounds by an alkali or alkaline-earth metal borohydride in the presence of a phase transfer catalyst which is an N-benzyl-N,N-bis (2-hydroxyethyl)cocoammonium halide.... | 03/27/1990 |
| 4873377 | Preparation of dibromoneopentyl glycol This invention relates to a process for preparing DBNPG by brominating pentaerythritol with HBr in the presence of a catalyst and solvent wherein water is present during the process. The reaction mass is neutralized prior to recovery of the DBNPG from the... | 10/10/1989 |
| 4754082 | Process for the preparation of perfluoroalkylalkenols In a novel process for the preparation of perfluoroalkylalkenols, perfluoroalkylhalohydrins are dehydrohalogenated using specific ionic bases, namely using an alkali metal carbonate, an alkali metal hydrogen carbonate or an alkylammonium hydrogen carbonat... | 06/28/1988 |
