专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

US20240286986A1 PURIFICATION PROCESS 审中-公开
公开(公告)号：US20240286986A1
公开(公告)日：2024-08-29
申请号：US18571528
申请日：2022-06-17
申请人： COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
发明人： John TSANAKTSIDIS , Cecily ELDRIDGE
IPC分类号： C07C41/42
CPC分类号： C07C41/42
摘要： A process for purifying halogenated alkoxyethane of general formula XClHC—CF2OR, where X is —Cl or —F and OR is C1-4 alkoxy, from a reaction mixture derived from a batch synthetic procedure for producing the halogenated alkoxyethane, the process comprising the steps of: (a) adding one of an amine and an acid to the reaction mixture, (b) adding a polar liquid to the mixture obtained in step a) to induce phase separation and formation of a polar phase and a separate organic phase, the organic phase containing the halogenated alkoxyethane, and (c) adding the other of the amine and the acid not used step (a) to the organic phase obtained in step (b) to thereby purify the halogenated alkoxyethane.

2. 发明公开

US20240150272A1 PROCESSES FOR PURIFYING GLYCOL ETHERS 审中-公开
公开(公告)号：US20240150272A1
公开(公告)日：2024-05-09
申请号：US18548990
申请日：2021-05-19
申请人： Dow Global Technologies LLC
发明人： Qi Jiang , Kaoru Ohba , Yujun Liu
IPC分类号： C07C41/42
CPC分类号： C07C41/42
摘要： A processes for purifying glycol ethers, comprises (a) providing a glycol ether to a first vessel, the glycol ether, the glycol ether having the following formula: R1—O— (CHR2CHR3) O)nR4; wherein R1 is an alkyl group having 1 to 9 carbon atoms or a phenyl group; wherein R2 and R3 each individually is hydrogen, a methyl group or an ethyl group, provided that when R3 is a methyl group or an ethyl group, R2 is hydrogen and provided that when R2 is a methyl group or an ethyl group, R3 is hydrogen; wherein R4 is hydrogen, an alkyl group having 1 to 4 carbon atoms, an acetyl group, or a propionyl group; and wherein n is an integer of 1 to 3; (b) filling the first vessel with inert gas; (c) heating the glycol ether in the first vessel to a sub-boiling temperature, wherein the sub-boiling temperature is at least 15° C. less than the normal boiling point of the glycol ether; (d) cooling the vapor from the first vessel in a second vessel to provide a liquid; and (e) contacting the glycol ether with a mixed bed of ion exchange resins comprising cationic exchange resins and anionic ion exchange resins.

3. 发明公开

US20240067592A1 METHOD FOR PRODUCING (2-METHOXYETHYL) VINYL ETHER, AND METHOD FOR REFINING (2-METHOXYETHYL) VINYL ETHER 审中-公开
公开(公告)号：US20240067592A1
公开(公告)日：2024-02-29
申请号：US18263812
申请日：2022-02-04
申请人： MARUZEN PETROCHEMICAL CO., LTD.
发明人： Ryuichi TENJIMBAYASHI , Kyohei SAITO , Yudai ITO , Takashi NANIKI , Tomohiko SATO
IPC分类号： C07C41/30 , C07C41/42
CPC分类号： C07C41/30 , C07C41/42
摘要： A method may produce (2-methoxyethyl) vinyl ether with a high purity from 2-methoxyethanol and acetylene. Such a method may include the A1, A2, and A3: (A1) synthesizing a vinyl ether including causing 2-methoxyethanol to react with acetylene to obtain a mixture containing unreacted 2-methoxyethanol and (2-methoxyethyl) vinyl ether; (A2) acetalizing including causing a reaction of the unreacted 2-methoxyethanol and the (2-methoxyethyl) vinyl ether in the mixture in the presence of an acid catalyst to be converted into acetaldehyde bis(2-methoxyethyl)acetal; and (A3) removing the acetaldehyde bis(2-methoxyethyl)acetal by distillation from an acetal-containing mixture obtained in step A2.

4. 发明公开

US20230331650A1 METHOD AND PLANT FOR PREPARING DIMETHYL ETHER 审中-公开
公开(公告)号：US20230331650A1
公开(公告)日：2023-10-19
申请号：US18042690
申请日：2021-06-22
申请人： Linde GmbH
发明人： Andreas PESCHEL
IPC分类号： C07C41/09 , C07C41/42 , C07C29/151 , B01D53/14 , B01D53/00 , B01D3/14
CPC分类号： C07C41/09 , C07C41/42 , C07C29/151 , B01D53/1425 , B01D53/1475 , B01D53/1487 , B01D53/002 , B01D3/143 , B01D2252/103 , B01D2257/70 , B01D2257/504 , B01D2257/502 , B01D2257/108
摘要： A method for preparing dimethyl ether (DME) from synthesis gas, wherein an input, which is formed using shifted and/or non-shifted synthesis gas, undergoes a catalytic conversion, thereby forming a product stream. The product stream undergoes a first separation, wherein a gas mixture is formed by at least partial separation of methanol and/or water from the product stream, and the gas mixture is partially condensed at a first pressure level by means of cooling from a first to a second temperature level. A portion of the gas mixture remaining in gaseous form at the second temperature level is washed in an absorption column with a return predominantly containing dimethyl ether, wherein a dimethyl ether product is formed using the portion of the gas mixture condensed during cooling.

5. 发明授权

US10626072B2 Method of preparing methyl tert-butyl ether 有权
公开(公告)号：US10626072B2
公开(公告)日：2020-04-21
申请号：US16073294
申请日：2018-01-04
申请人： LG CHEM, LTD.
发明人： Sung Ho Lee , Sang Beom Lee , Joon Ho Shin , In Yong Jeong
IPC分类号： C07C41/06 , B01D3/00 , C07C41/42 , B01J39/20 , B01J39/05
CPC分类号： C07C41/06 , B01D3/009 , B01J39/05 , B01J39/20 , C07C41/42 , B01J2219/0004 , B01J2219/00038 , C07C41/06 , C07C43/046 , C07C41/42 , C07C43/046
摘要： The present invention relates to a method of preparing methyl tert-butyl ether including a reaction step of reacting methanol with iso-butene in the presence of an acid catalyst to generate methyl tert-butyl ether; and a purification step of purify the reaction product obtained by the reaction step by introducing the reaction product into a reaction distillation column including a packing stage containing an acid catalyst, wherein a flow ratio of a recycle to a fresh feed is different per the volume of each reactor. Accordingly, the amount of unreacted iso-butene and the amount of impurities included in the reactor may be reduced, resulting in reduction of the amount of thermal energy used in a reaction distillation column.

6. 发明申请

US20180222834A1 METHOD FOR PRODUCING SEVOFLURANE 审中-公开
公开(公告)号：US20180222834A1
公开(公告)日：2018-08-09
申请号：US15473940
申请日：2017-03-30
申请人： CENTRAL GLASS COMPANY, LIMITED
发明人： Takaaki YOSHIMURA , Toshihiko OONO , Shinya AKIBA , Masaki FUJIWARA
IPC分类号： C07C41/42 , C07C41/22
CPC分类号： C07C41/42 , C07C41/22 , C07C41/44 , C07C43/123
摘要： An object of the present invention is to remove a compound A from “sevoflurane containing fluoromethyl-1,1,3,3,3-pentafluoroisopropenyl ether (compound A)” so as to collect high-purity sevoflurane. The present invention concerns a method for producing sevoflurane containing substantially no compound A, comprising the following steps of: bringing a composition containing hydrogen fluoride (HF) and water at a mass ratio of 1:1 to 1:30 into contact with a 1st organic liquid containing sevoflurane and a compound A, thereby obtaining a 2nd organic liquid containing the compound A in an amount that is lower than that in the 1st organic liquid (step 1a); and distilling the 2nd organic liquid under the presence of a degradation inhibitor, thereby obtaining sevoflurane containing substantially no compound A as a main distillation fraction (step 2).

7. 发明授权

US09919318B2 Process for preparation of high flash point frothing agent 有权
公开(公告)号：US09919318B2
公开(公告)日：2018-03-20
申请号：US15129722
申请日：2015-03-27
申请人： Godavari Blorefineries Limited
发明人： Ravindra Gadhe , Shanul Pagar , Sangeeta Srivastava
IPC分类号： B03D1/008 , C07C41/42 , C07C41/06
CPC分类号： B03D1/008 , B03D2201/04 , C07C41/06 , C07C41/42
摘要： The present invention discloses a process for preparing high flash point frothing agent by treating an aldehyde with an alcohol in the presence of an acid catalyst at elevated temperature and further adding a carbonate salt to obtain the frothing agent and polymer.

8. 发明授权

US09815760B2 Process for the co-production of acetic acid and dimethyl ether 有权
公开(公告)号：US09815760B2
公开(公告)日：2017-11-14
申请号：US15311925
申请日：2015-06-12
申请人： BP CHEMICALS LIMITED
发明人： Timothy Crispin Bristow
IPC分类号： C07C51/09 , C07C41/09 , C07C41/16 , C07C67/37 , B01D3/14 , B01D3/32 , B01D3/42 , C07C41/42
CPC分类号： C07C51/09 , B01D3/143 , B01D3/322 , B01D3/4205 , C07C41/09 , C07C41/16 , C07C41/42 , C07C67/37 , C07C53/08 , C07C43/043 , C07C69/14
摘要： Catalytic dehydration-hydrolysis process for the co-production of acetic acid and dimethyl ether from a mixture of methanol and methyl acetate and water in which the amount of water fed to the process is controlled by the steps of dehydrating a methanol feed to provide a crude product containing dimethyl ether, unconverted methanol and water, recovering therefrom a stream containing dimethyl ether, water and methanol and a water stream and separating dimethyl ether from the dimethyl-ether containing stream to produce a methanol stream containing methanol and water. At least part of the methanol stream and methyl acetate is supplied to the dehydration-hydrolysis process.

9. 发明授权

US09745238B2 Ether blends via reactive distillation 有权
公开(公告)号：US09745238B2
公开(公告)日：2017-08-29
申请号：US14777022
申请日：2014-03-14
申请人： GAS TECHNOLOGIES LLC
发明人： Ian Lawrence Gaffney , Evan Michael Visser , Krishna K. Rao , Walter Breidenstein
IPC分类号： C07C41/00 , C07C41/42 , C07C29/50 , C07C41/09 , B01D3/00 , B01J8/02 , B01J12/00
CPC分类号： C07C41/42 , B01D3/009 , B01J8/02 , B01J12/00 , B01J2208/00805 , C07C29/50 , C07C31/04 , C07C31/08 , C07C41/09 , C07C43/04 , C07C43/043 , C07C43/06 , Y02P20/127
摘要： A method for forming a blend of ethers from a blend of alcohols includes a step of reacting a hydrocarbon-containing gas with an oxygen-containing gas to form first product blend. The first product blend includes a blend of partially oxygenated compounds. The blend of partially oxygenated compounds is provided to a reactive distillation station where it is converted a second product blend. The second product blend typically includes a mixture of ethers. An apparatus implementing the method is also provided.

10. 发明授权

US09611202B2 Process for the preparation of dimethyl ether 有权
公开(公告)号：US09611202B2
公开(公告)日：2017-04-04
申请号：US14424522
申请日：2013-08-14
申请人： Haldor Topsoe A/S
发明人： Finn Joensen , Jorgen Madsen , Poul Erik Højlund Nielsen
IPC分类号： C07C41/42 , C07C41/09
CPC分类号： C07C41/09 , C07C29/1518 , C07C41/34 , C07C41/42 , Y02P20/52 , C07C31/04 , C07C43/043
摘要： Process for the preparation of dimethyl ether product by catalytic conversion of synthesis gas to dimethyl ether comprising the steps of contacting a stream of synthesis gas comprising carbon dioxide in a dimethyl ether synthesis step in one or more reactors and with one or more catalysts active in the formation of methanol and dehydration of methanol to dimethyl ether and forming a product mixture comprising dimethyl ether, carbon dioxide and unconverted synthesis gas; cooling and separating the product mixture into a first liquid phase comprising dimethyl ether and carbon dioxide being dissolved in the formed dimethyl ether, and into a first gaseous phase comprising unconverted synthesis gas containing carbon monoxide and carbon dioxide; passing the first liquid phase to a scrubbing zone and contacting the phase with a liquid sorbent being effective in absorption of carbon dioxide; and withdrawing a dimethyl ether product being depleted in carbon dioxide from the scrubbing zone.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式