- Preparation method of alkyl diglycol (by machine translation)
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The invention relates to a preparation method of alkyl diglycol with NRE (narrow distribution ethoxylate Narrow Range Ethoxylate) effect while increasing the reaction speed in the presence of a novel aluminum-based catalyst containing alkali metal or alkaline earth metal. (by machine translation)
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Paragraph 0031-0044
(2020/06/09)
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- POLYOL ETHERS AND PROCESS FOR MAKING THEM
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New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.
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Paragraph 0069
(2011/05/14)
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- POLYOL ETHERS AND PROCESS FOR MAKING THEM
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New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.
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Page/Page column 7
(2010/03/31)
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- HETEROCYCLIC AMINE CATALYST COMPOSITIONS FOR THE ALKOXYLATION OF ALCOHOLS TO GLYCOL ETHERS
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Glycol ethers are made by a process in which an alcohol, an alkylene oxide and a catalytic amount of an aromatic, heterocyclic amine catalyst are contacted under reactive conditions. Representative catalysis include substituted and unsubsiituted pyridines and imidazoles. The process uses known oxides and alcohols, and produces more mono- and di- adduct products than does a corresponding process using a caustic catalyst. Moreover, the process can be conducted at a lower reaction temperature than a corresponding process using a caustic catalyst without sacrificing oxide conversion rates yet producing fewer carfoony! impurities.
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Page/Page column 8-9, 11
(2009/12/05)
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- DEGRADATION OF POLYCYCLIC AROMATIC HYDROCARBONS TO RENDER THEM AVAILABLE FOR BIODEGRADATION
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A method for the degradation of polycyclic aromatic compounds is disclosed that involves dissolving ozone in a bipolar solvent comprising a non-polar solvent in which is of sufficiently non-polar character to solubilized the polycyclic aromatic compounds, and a polar-water-compatible solvent which is fully miscible with the non-polar solvent to form a single phase with the non-polar solvent. The bipolar solvent with dissolved ozone is contacted with the polycyclic aromatic compounds to solubilize the polycyclic aromatic compounds and react the dissolved polycyclic aromatic compounds with the ozone to degrade the dissolved polycyclic aromatic compounds to oxygenated intermediates. The bipolar solvent is then mixed with sufficient water to form separate non-polar and polar phases, the non-polar phase comprising the non-polar solvent and the polar phase comprising the non-polar solvent and the oxygenated intermediates. The polar phase is then diluted and incubated with bacteria to biodegrade the oxygenated intermediates.
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Page/Page column 5-8; 15-16
(2008/12/07)
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- Combinatorial synthesis of PEG oligomer libraries
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A simple chain-extending approach was established for the scale-up of the monoprotected monodisperse PEG diol materials. Reactions of THP-(OCH2CH2)n—OMs (n=4, 8, 12) with a large excess of commercially available H—(OCH2CH2)n—OH (n=1-4) under basic conditions led to THP-(OCH2CH2)n—OH (n=5-15). Similarly, Me-(OCH2CH2)n—OH (n=4-11, 13) were prepared from Me-(OCH2CH2)n—OMs (n=3, 7, 11). For the chain elongation steps, 40-80% yields were achieved through extraction purification. PEG oligomer libraries I and II were generated in 50-95% overall yields by alkylation or acylation of THP-(OCH2CH2)n—OH (n=1-15) followed by deprotection. Alkylation of Me-(OCH2CH2)n—OH (n=1-11, 13) with X—(CH2)m—CO2R (X=Br or OMs) and subsequent hydrolysis led to PEG oligomer library III in 30-60% overall yields. Combinatorial purification techniques were adapted to the larger-scale library synthesis. A total of 498 compounds, each with a weight of 2-5 g and a minimum purity of 90%, were synthesized.
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Page/Page column 9
(2010/02/15)
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- METHOD FOR PRODUCING MONOALKYLENE GLYCOL MONOETHER
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The invention relates to a method for producing monoalkylene glycol monoether of general formulas (Ia) and (Ib), wherein a group R is hydrogen, a methyl-, ethyl-, propyl- or butyl group and R1 is a phenyl or a linear or branched C1-C10 alkyl group consisting in reacting an alcohol R1OH (II) with an alkylene oxide (III) in the presence of a heterogeneous catalyst in a liquid phase which contains in the form of a catalytically active agent at least one composition of formula (IV): M1pAnm x zH2O, wherein M1is hydrogen and/or one or several cations of IA, IIA, IIIA groups, a IVA, IB, IIB, IIIB, IVB, VB, VIB, VIIB or VIIIB lanthanide groups, An is an anion of formula [M2qOn(OH)2(3-n)], wherein M2 is at least one cationic element from a group of pnicogens As, Sb and Bi, the index q is a value equal to 1, the index n is a fractional or an integer number equal to or greater than 0 and strictly less than 3, z is equal to 0 or an integer or fractional number strictly greater than 0 and equal or less than 10, the index p is a value normalised to 1 and the index m is a number ranging from 1.2 to 8 stoichiometrically obtainable from the electric charge of one or several cations M1 and from the electric charge of an An anion taking in to account the index p whose value is normalised to 1 at a temperature ranging from a room temperature to 350 °C, at a pressure ranging from atmospheric pressure to 80 bar and at a molar ratio alcohol II/alkylene oxide III ranging from 3:1 to 15:1.
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Page/Page column 24-25
(2010/02/14)
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- Manufacture and use of a herbicide formulation
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The invention pertains to a method for manufacture and use of a herbicidal formulation containing glyphosate and an acid. Specifically, phosphoric, citric, acetic, propionic, and phosphorous acid and their corresponding salts have been useful in this application. The acid based formulations offer lower glyphosate use rates than standard formulations.
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- Manufacture and use of a herbicide formulation
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The invention pertains to a method for manufacture and use of a herbicidal formulation of chlorinated carboxylic acid herbicides. A number of different solvents have been found useful in this application. Furthermore, the use of surfactants that act as solvents for the acid herbicides has been discovered. These formulations have shown superior herbicidal activity when compared to standard salt and ester forms.
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- Preparation of phenylazonaphthalenes
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A process for preparing aqueous preparations of azo dyes of the formula STR1 where R is hydrogen or C1 -C4 -alkyl and Kat≈ is the equivalent of a cation which derives from a tertiary amine of the ethanolamine or propanolamine series, by diazotization of an aniline of the formula STR2 with neopentylglycol dinitrite in an aqueous medium and coupling of the resulting reaction mixture with β-naphthol in the presence of a water-miscible diluent and of an amine comprises using an amine comprising a tertiary amine of the ethanolamine or propanolamine series.
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- Catalysts for alkoxylation reactions
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Catalysts producing a sharply peaked alkoxylation distribution during the alkoxylation of organic materials comprise mixtures of BF3 and metal alkyls or metal alkoxides, SiF4 and metal alkyls or metal alkoxides, or mixtures of these catalysts.
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- Methods of alkoxylation
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Catalysts comprising mixtures of HF and metal alkoxides and mixed metal alkoxides produce a sharply peaked alkoxylation distribution during the alkoxylation of organic materials.
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- Catalysts for alkoxylation reactions
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Catalysts and a method of using said catalysts for the alkoxylation of a variety of materials is disclosed. Catalysts so described produce alkoxylates having a very sharp alkoxylate distribution. The catalysts are supported and unsupported dialkoxy and dialkyl metal fluorides and halides and alkyl metal difluorides and dihalides.
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- Organotin-containing composition for the stabilization of polymers of vinyl chloride
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An organotin-containing composition for the stabilization of polymers or copolymers of vinyl chloride in which there is incorporated a stabilizing amount of an organotin compound containing at least two tin atoms and which is a mercapto, hydroxy or alkoxy substituted ester of a mercapto acid substituted organotin mercapto acid diester.
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- Preparation of etherified polyoxyalkylene derivatives
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Polyoxyalkylene compounds having at least four oxyalkylene units and one or two terminal hydroxyl groups are etherified by reacting same with organic primary chlorides or bromides in the presence of an aqueous, at least 30% by weight solution of sodium or potassium hydroxide to produce the corresponding etherified polyoxyalkylene derivatives. The molar ratio of the organohalide to the hydroxyl group(s) of the polyoxyalkylene compound is at least 1.2, and the molar ratio of the alkali metal hydroxide to such hydroxyl group(s) is at least 1.
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- Phase-Transfer Synthesis of Monoalkyl Ethers of Oligoethylene Glycols
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The effects of catalyst, temperature, solvent, and reagent ratios on the phase-transfer-catalyzed Williamson ether synthesis of monoalkyl ethers of oligoethylene glycols have been studied.A convenient method has been developed which gives reproducibly high yields of pure monoethers in the presence of aqueous sodium hydroxide.
- Gibson, Thomas
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p. 1095 - 1098
(2007/10/02)
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- Preserving and disinfecting composition
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This invention provides a composition comprising a synergistic combination of (a) a product obtained by reacting formaldehyde with an alcohol selected from benzyl alcohol, a glycol or a glycol mono-alkyl ether, or mixtures of said alcohols, and (b) a 3,5-bis(alkoxyalkyl)-tetrahydro-2H-1,3,5-thiadiazine-2-thione useful in preserving and/or disinfecting industrial fluids, cosmetics and pharmaceutical preparations.
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