- Method for continuously synthesizing ethylhexylglycerin by micro-channel reactor
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The invention discloses a method for continuously synthesizing ethylhexylglycerin by using a micro-channel reactor. The method comprises the following steps: by using isooctyl alcohol, 3-chloro-1, 2-propylene glycol and inorganic base as raw materials, carrying out ethylhexylglycerin continuous synthesis by using the micro-channel reactor, separating the organic phase from a product, distilling and the like to obtain the high-purity ethylhexylglycerin product. According to the process method disclosed by the invention, the characteristics that the micro-channel reactor strengthens heat transfer and mass transfer and can realize accurate control are fully utilized; the defects of more byproducts, difficulty in control, poorer reaction selectivity, low product yield, complicated process, higher cost and the like caused by non-uniform reaction heating when the ethylhexylglycerin is synthesized by the conventional reactor equipment are overcome, continuous production and automatic control of the process can be realized, production is efficient and safe in production, mild reaction conditions, short reaction time, high product purity and yield are also realized, and the method is green and economic, and is beneficial to popularization and application of ethylhexylglycerin in cosmetics and daily chemical industries.
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Paragraph 0026-0033
(2021/04/17)
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- A process for preparing ethyl hexyl glycerin method
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This invention discloses a process for preparing ethyl hexyl glycerin method, comprises the following steps: (1) in order to boron trifluoride ether solution is used as the catalyst, under stirring condition, make the isooctanol and glycidyl ester type of stirring at room temperature the reaction, to produce intermediate; (2) in the step (1) and capable of adding acid as catalyst, and then adding water or alcohol, under the conditions of normal pressure or reduced in the reaction, so that the steps (1) intermediate obtained by hydrolysis or alcoholysis; (3) the step (2) of the product after washing liquid, ethyl hexyl glycerin through distillation. The invention of the method of preparing ethyl hexyl glycerin operation process is simple, mild reaction conditions, low energy consumption, is suitable for the large-scale industrial production, can be colorless ethyl hexyl glycerin, product yield is greater than 82%, the purity of 99% or more.
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Paragraph 0023; 0024; 0025; 0027; 0029; 0038
(2018/07/15)
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- METHODS FOR PREPARING ALKYLGLYCERYL ETHERS
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The present invention relates to a method for manufacturing alkyl glyceryl ether by conducting reaction of alkyl glycidyl ether and water in the presence of a solvent and a catalyst to obtain alkyl glyceryl ether, wherein the solvent comprises glycol ethers, and the catalyst comprises an alkali metal salt of a carboxylic acid. The method of the present invention does not require use of chemicals other than the solvent and the catalyst, so that the production cost is low and cost-effective.COPYRIGHT KIPO 2018
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Paragraph 0077; 0080; 0082; 0084; 0086-0089; 0091; 0092
(2018/08/07)
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- The Preparation method of 2-ethylhexylglycerolether from 2-ethylhexylglycidylether by gas phase hydrolysis
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The present invention relates to a method for manufacturing 2-ethyl hexyl glycerol ether, which performs hydrolysis of 2-ethyl hexyl glycidyl ether by reacting the 2-ethyl hexyl glycidyl ether with water, while controlling the reaction temperature at the temperature of 250-350anddeg;C to process the reaction in a gas phase. In the present invention, by applying a method of vapor phase hydrolysis of 2-ethyl hexyl glycidyl ether in the manufacture of 2-ethyl hexyl glycerol ether, it is possible to ensure simplification and efficiency of manufacturing processes, and to achieve a high yield of 2-ethyl hexyl glycerol ether which is a target material by inhibiting the generation of 2-ethyl hexyl glycerol ether dimer byproducts in a reaction step.(AA) Vaporizer(BB) Controlled volume pump(CC) 2-ethyl hexyl glycidyl ether(DD) Water(EE) Vapor phase hydrolysis reactor(FF) Condensate plate(GG) Exhaust treatment(HH) Vacuum pump(II) Low temperature cooing device(JJ) Product collecting device(KK) 2-ethyl hexyl glycidyl ether purification processCOPYRIGHT KIPO 2017
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Paragraph 0055-0058
(2017/10/13)
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- Synthesis of 3-alkoxypropan-1,2-diols from glycidol: Experimental and theoretical studies for the optimization of the synthesis of glycerol derived solvents
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A straightforward synthetic methodology has been derived for the synthesis of glycerol monoethers from glycidol and alcohols. Several homogeneous and heterogeneous basic catalysts have been tested, the best results being obtained with readily available and inexpensive alkaline metal hydroxides. In the best case, good yield of the desired monoether is obtained under smooth reaction conditions, always with total conversion of glycidol. The selectivity of the reactions mainly depends on the alcohol used, due to the concurrence of undesired side reactions. A mechanistic study carried out through computational DFT calculations, in which solvent effects are taken into account, also complemented the experiments, has allowed to identify the main reaction paths taking place under reaction conditions, giving insights into the main causes affecting the reaction selectivity and also into how it could be improved.
- Leal-Duaso,Caballero,Urriolabeitia,Mayoral,García,Pires
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p. 4176 - 4185
(2017/09/07)
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- A process for preparing high purity ethyl hexyl glycerin method
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The invention provides a method for preparing high-purity ethylhexylglycerin. According to the method, an intermediate 4-alkoxymethyl-1,3-dioxoane is generated from 2-ethylhexylglycidyl ether and acetone under the action of boron trifluoride diethyl etherate, a terminator is added in good time before hydrolysis, and after liquid separation, an oil-phase substance is neutralized by use of sodium hydrogen carbonate and then washed, next, a stabilizer is added, and finally, the high-purity ethylhexylglycerin is obtained by use of short-path distillation. The method is suitable for cosmetic additives and suitable for large-scale industrial production, and has the advantages of simple process, small energy consumption, product yield of greater than 88%, purity of 99.3%, no color and no taste, and the like.
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Paragraph 0031-0032
(2017/08/23)
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- Method for producing ethylhexylglycerin
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The present invention provides a producing method of ethylhexylglycerin, comprising the steps of (A) agitating 2-ethylhexylglycidyl ether, water, an organic solvent and a catalyst; (B) reacting the mixture at 80-120anddeg;C for 15-25 hours after the agitation, and then synthesizing ethylhexylglycerin; (C) adding ethylacetate after the synthesis; (D) removing a water layer in the step (C) and washing an organic layer with water; and (E) distilling the washed organic layer, and accordingly obtaining ethylhexylglycerin.(AA) Temperature(anddeg;C)COPYRIGHT KIPO 2015
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- 1,2,3-Trimethoxypropane and glycerol ethers as bio-sourced solvents from glycerol: Synthesis by solvent-free phase-transfer catalysis and utilization as an alternative solvent in chemical transformations
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1,2,3-Trimethoxypropane (2), 1-alkoxy-2,3-dimethoxy-propanes, and 1-aryloxy-2,3-dimethoxypropanes were prepared in good yields and selectivity by solid-liquid phase-transfer catalysis in the presence of an inorganic base and an ammonium salt as the phase-transfer catalyst with no additional solvent. No heating was required, and the synthesis was easily performed under atmospheric pressure on a 150g scale. For the preparation of 2, the conversion of glycerol was complete and the selectivity for the expected glycerol trimethylether was above 95%. This product was utilized as a solvent in organic reactions such as transesterifications between glycerol and vegetable oil, organometallic reactions (Grignard- and Barbier-type reactions), carbon-carbon coupling reactions (Suzuki, Sonogashira, Heck), and in etherification reactions by dehydrogenative alkylation. The solvent showed interesting properties for the solubilization of polymers.
- Sutter, Marc,Dayoub, Wissam,Metay, Estelle,Raoul, Yann,Lemaire, Marc
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p. 2893 - 2904
(2013/10/21)
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- Selective synthesis of 1-O-Alkyl(poly)glycerol ethers by catalytic reductive alkylation of carboxylic acids with a recyclable catalytic system
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(Poly)glycerol monoethers were synthesized in good yield and selectivity by the catalytic reductive alkylation of glycerol, diglycerol, and triglycerol with readily available, cheap and/or bio-sourced carboxylic acids. The reaction was catalyzed by 1 mol % of Pd/C under 50 bar H2 using an acid ion-exchange resin as a recyclable cocatalyst. The catalytic system was recycled several times, and a mechanism is proposed for this transformation.
- Sutter, Marc,Dayoub, Wissam,Metay, Estelle,Raoul, Yann,Lemaire, Marc
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p. 2397 - 2409
(2013/02/23)
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- Coalescent for aqueous compositions
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A coalescent composition selected from 1,3-(C6-C12alkyloxy)-2-propanol, 1,1'-oxybis[3-(C6-C12alkyloxy)]-2-propanol, and mixtures thereof is provided. Preferred coalescents are 1,3-(decyloxy)-2-propanol and 1,1'-oxybis[3-(heptyloxy)]-2-propanol. A method for forming glycerol diethers and diglycerol diethers, an aqueous coating composition including the coalescent compositions and a method for forming a coating are also provided.
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Page/Page column 5-6
(2012/03/26)
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- COALESCENT FOR AQUEOUS COMPOSITIONS
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A coalescent composition selected from 1,3-(C6-C12alkyloxy)-2-propanol, 1,1′-oxybis[3-(C6-C12alkyloxy)]-2-propanol, and mixtures thereof is provided. Preferred coalescents are 1,3-(decyloxy)-2-propanol and 1,1′-oxybis[3-(heptyloxy)]-2-propanol. A method for forming glycerol diethers and diglycerol diethers, an aqueous coating composition including the coalescent compositions and a method for forming a coating are also provided.
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- PROCESS FOR MAKING POLYOL ETHERS
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The present invention generally relates to a process for making polyol ethers by reacting a polyol and a carbonyl compound together in the presence of hydrogen gas and a palladium hydrogenation catalyst on an acidic mesoporous carbon support.
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Page/Page column 16
(2011/09/16)
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- PROCESS FOR THE PREPARATION OF 1-ALKYL GLYCEROL ETHERS
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A process for the preparation of a 1-alkyl glycerol ether of the formula (I) in which: (a) an alkyl glycidyl ether of the formula (II) in which R is an unbranched or branched C1- to C24-alkyl group, where the alkyl group may be substituted with one or more hydroxy and/or C1- to C4-alkoxy group(s) and/or the alkyl chain may be interrupted by up to four oxygen atoms, is added to: (x) a carboxylic acid having 1-10 carbon atoms; (y) an ester of a carboxylic acid having 1-10 carbon atoms; and/or (z) an anhydride of a carboxylic acid having 1-10 carbon atoms. The low-water reaction mixture containing a catalytic amount of a strong acid is reacted at a temperature of more than 40° C. to give an acylated alkyl glycerol ether; and (b) the acylated alkyl glycerol ether is reacted in order to obtain the alkyl glycerol ether of the formula (I).
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Page/Page column 4
(2011/02/15)
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- An efficient synthesis of glyceryl ethers: Catalyst-free hydrolysis of glycidyl ethers in water media
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Hydrolysis of hydrophobic glycidyl ethers in pressurized water media afforded the corresponding glyceryl ethers in good to excellent selectivity within several minutes without catalyst.
- Saito, Akira,Shirasawa, Takeshi,Tanahashi, Shinichiro,Uno, Mitsuru,Tatsumi, Nobuhiro,Kitsuki, Tomohito
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experimental part
p. 753 - 755
(2010/04/23)
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- METHOD FOR PRODUCING A REACTION PRODUCT
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A method for producing a reaction product using a reaction system in which an organic compound and water react with each other to generate the reaction product and furthermore part of the reaction product consecutively reacts. A filler for regulating the consecutive reaction of the reaction product is provided in a reaction field of a fluid mixture of the organic compound and the subcritical water.
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Page/Page column 3-4
(2008/06/13)
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- PROCESS FOR PRODUCING HYDROLYZATE
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A process for producing a hydrolyzate, comprising mixing an organic material with water and carrying out a hydrolytic reaction of the organic material, wherein the mixing of the organic material with water is carried out by shear flow thereof at a shear rate of 5.5 sec-1 or higher U/Dmin (in which Dmin is the minimum inner diameter (mm) of flow channel at mixing area, and U is the flow rate (mm/sec) of organic material/water mixture at mixing area), and wherein the hydrolytic reaction of the organic material is carried out at a reaction temperature of 150° to 350°C under a reaction pressure of the saturated vapor pressure of water or higher.
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Page/Page column 7-12; 1/2-2/2
(2008/06/13)
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- PROCESS FOR PRODUCING GLYCERYL ETHER
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A process for producing a glyceryl ether which comprises supplying a compound represented by the general formula (I): (I) (wherein R represents a C1-20 hydrogen group in which part or all of the hydrogen atoms may have been replaced with a fluorine atom; OA's may be the same or different and each represents C2-4 oxyalkylene; and p is a number of 0-20) and water to a reactor and hydrolyzing the compound under such conditions that the water is in a subcritical or supercritical state. The process for glyceryl ether production includes: a step (1) in which the water is recovered from the reaction mixture resulting from the hydrolysis, regulated so as to have a pH of 3.5 or higher, and then supplied to the reactor; or a step (2) in which the water recovered from the reaction mixture resulting from the hydrolysis is filtered through a reverse osmosis membrane and the treated water obtained is supplied as recycle water to the reactor.
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Page/Page column 13-19
(2008/06/13)
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- Method for producing glyceryl ether
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[PROBLEM TO BE SOLVED]: To provide a method for producing glyceryl ether deodorized enough. [SOLUTION]: The method for producing glyceryl ether comprises the following processes (1) - (3) ; (1) Process of supply of glycidyl ether to hydrolysis reaction, and generating glyceryl ether; (2) Process where acid value of reaction liquid is adjusted to -400 - 0 mmol/kg; (3) Process of distillation of reaction liquid and obtaining glyceryl ether.
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Page/Page column 8-10
(2008/06/13)
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