ClassID:

91331

C07C41/42 - CPC Classification

Classification description:

Preparation of ethers; Preparation of compounds having groups, groups or groups; Preparation of ethers; Separation; Purification; Stabilisation; Use of additives by change of physical state, e.g. by crystallisation by distillation

Recent Application in this class:
#1
20260062372
2026-03-05

METHOD FOR PRODUCING COMPOSITION CONTAINING PURIFIED FLUORINE-CONTAINING ETHER COMPOUND

#2
20260062371
2026-03-05

A METHOD AND A SYSTEM FOR PRODUCING ETHER

#3
20260055041
2026-02-26

A METHOD AND A SYSTEM FOR PRODUCING ETHER

#4
20260008738
2026-01-08

HYDROFLUOROETHER COMPOSITION AND METHOD FOR ITS PREPARATION

#5
20260001828
2026-01-01

BIOBASED SURFACTANT AND ANTIOXIDANT

#6
20250388526
2025-12-25

PROCESS FOR PRODUCING HYDROFLUOROETHERS

#7
20250084013
2025-03-13

USE OF DIVIDED WALL TECHNOLOGY TO PRODUCE HIGH PURITY METHANOL

#8
20250059121
2025-02-20

ETHERIFICATION OF HIGH CONCENTRATION C5 ISO-OLEFINS VIA CATALYTIC DISTILLATION

#9
20240317662
2024-09-26

PRODUCTION OF HALOGENATED ALKOXYETHANE

#10
20240317661
2024-09-26

SYNTHESIS OF HALOGENATED ALKOXYETHANE

#11
20240300875
2024-09-12

PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE

#12
20240286986
2024-08-29

PURIFICATION PROCESS

#13
20240150272
2024-05-09

PROCESSES FOR PURIFYING GLYCOL ETHERS

#14
20240101500
2024-03-28

Natural Gas Dehydration

#15
20240076258
2024-03-07

METHOD FOR PRODUCING ISOBUTYL VINYL ETHER AND METHOD FOR PURIFYING ISOBUTYL VINYL ETHER

#16
20240067592
2024-02-29

METHOD FOR PRODUCING (2-METHOXYETHYL) VINYL ETHER, AND METHOD FOR REFINING (2-METHOXYETHYL) VINYL ETHER

#17
20240002321
2024-01-04

HEAT RECOVERY FROM FLUE GAS DURING ALKYL TERT-BUTYL ETHER PRODUCTION

#18
20230382839
2023-11-30

A METHOD FOR THE PREPARATION OF 1,2-PROPANEDIOL, DIPROPYLENE GLYCOL AND TRIPROPYLENE GLYCOL

#19
20230373891
2023-11-23

PROCESS FOR THE PREPARATION OF 2-ISOPENTYL-2-ISOPROPYL-1,3-DIMETHOXYPROPANE

#20
20230331650
2023-10-19

METHOD AND PLANT FOR PREPARING DIMETHYL ETHER

#21
20230278944
2023-09-07

METHOD FOR PREPARING PERFLUORODIALKYL ETHER AND APPARATUS FOR PREPARING PERFLUORODIALKYL ETHER

#22
20230271909
2023-08-31

METHOXYPROPANOLS SEPARATION INCLUDING AZEOTROPIC DISTILLATION

#23
20230257333
2023-08-17

METHOD FOR PRODUCING COMPOSITION CONTAINING PURIFIED FLUORINE-CONTAINING ETHER COMPOUND

#24
20230122837
2023-04-20

Process and facility for recovering methoxypropanols from an aqueous stream

#25
20230104664
2023-04-06

INTEGRATED PRODUCTION PROCESS OF TERT-BUTYL ETHERS OF GLYCEROL OR ISOOCTENE STREAM

#26
20230027740
2023-01-26

TRIFUNCTIONAL PROCESSES IN CATALYTIC DISTILLATION

#27
20220371978
2022-11-24

SYSTEMS AND METHODS FOR MTBE PRODUCTION

#28
20220289653
2022-09-15

Natural gas dehydration

#29
20220259126
2022-08-18

Etherification of high concentration C5 ISO-olefins via catalytic distillation

#30
20220234979
2022-07-28

PROCESS FOR THE PURIFICATION OF EUGENOL AND NOVEL COMPOSITIONS COMPRISING EUGENOL

#31
20220234978
2022-07-28

Intensified process of synthesis of dialkyl ethers using a step conical reactor

#32
20220177398
2022-06-09

Industrial Process for Manufacturing of Perfluoro (Methyl Vinyl Ether)(PFMVE) and of 2-Fluoro-1,2-Dichloro-Trifluoromethoxyethylene (FCTFE)

#33
20220064078
2022-03-03

Use of divided wall technology to produce high purity methanol

#34
20220048843
2022-02-17

Oxygen stripping in etherification, ethers decomposition and isooctene production

#35
20220033334
2022-02-03

METHOD FOR PRODUCING DIVINYL ETHER COMPOUND HAVING ALKYLENE SKELETON

#36
20210395178
2021-12-23

SELECTIVE DIMERIZATION AND ETHERIFICATION OF ISOBUTYLENE VIA CATALYTIC DISTILLATION

#37
20210347717
2021-11-11

Method for the production of MTBE and 1-butene from a Cfeed stream

#38
20210246094
2021-08-12

METHOD FOR PRODUCING FAT ALCOHOL ETHOXYLATES

#39
20200399544
2020-12-24

Methods for methanol-to-gasoline conversion with forwarding methanol processing

#40
20200392094
2020-12-17

Method for depleting 2-methoxyethanol (MOE)

#41
20200392093
2020-12-17

Method for the continuous separation by distillation of mixtures that contain morpholine (MO), monoaminodiglycol (ADG), ammonia, water and methoxyethanol (MOE)

#42
20200199057
2020-06-25

Methods for manufacturing phenoxyethanol

#43
20190315671
2019-10-17

Method of preparing methyl tert-butyl ether

#44
20190210949
2019-07-11

Me 1 hod for removing or collecting 2-alkoxyethanol, and method for producing (2-alkoxyethyl) vinyl ether

#45
20190194103
2019-06-27

Ether blends via reactive distillation

#46
20180222834
2018-08-09

Method for producing sevoflurane

#47
20180044272
2018-02-15

Glycol ether process

#48
20170320801
2017-11-09

Ether blends via reactive distillation

#49
20170174599
2017-06-22

Systems and methods for manufacture of dimethyl ether (DME) from natural gas and flare gas feedstock

#50
20170173595
2017-06-22

Process for preparation of high flash point frothing agent

#51
20170158589
2017-06-08

Process for generating a mixed multicomponent vapor for preparation of monoalkyl ethers of diphenols

#52
20170121264
2017-05-04

Process for the co-production of acetic acid and dimethyl ether

#53
20170096382
2017-04-06

Process for the co-production of acetic acid and dimethyl ether

#54
20170081271
2017-03-23

Process for purifying methyl acetate mixtures

#55
20160347697
2016-12-01

Process for recovery of pure components from product mixture of one step dimethyl ether synthesis reactor

#56
20160340282
2016-11-24

Process and Installation for the Production of Dialkyl Ether

#57
20160332945
2016-11-17

Separation processing method for a product stream of a dimethyl ether reactor

#58
20160326081
2016-11-10

Processing by a separation technique of a gas mixture formed from a product stream of a dimethyl reactor

#59
20160318834
2016-11-03

METHOD FOR PRODUCING DIMETHYL ETHER AND DEVICE SUITABLE THEREFOR

#60
20160297732
2016-10-13

Method for manufacturing high purity glycol based compound

#61
20160251291
2016-09-01

Method for producing alkoxyhydroxybenzaldehyde

#62
20160229776
2016-08-11

Method for making a high purity alcohol

#63
20160193541
2016-07-07

Distillation apparatus

#64
20160193540
2016-07-07

Divided wall distillation column

#65
20160168064
2016-06-16

Purification method

#66
20160158667
2016-06-09

Distillation device

#67
20160152537
2016-06-02

Systems and methods for manufacture of dimethyl ether (DME) from natural gas and flare gas feedstock

#68
20160102035
2016-04-14

Process for the separation of an alkylene glycol

#69
20160031780
2016-02-04

Ether blends via reactive distillation

#70
20160031779
2016-02-04

Production of propylene glycol monoalkyl ether

#71
20150239813
2015-08-27

Process for production of DME from crude methanol

#72
20150232402
2015-08-20

Method for producing dimethyl ether and device suitable therefor

#73
20150232401
2015-08-20

Process for the preparation of dimethyl ether

#74
20150203428
2015-07-23

Method for producing alkoxy-hydroxybenzaldehyde that is substantially free of alkyl-alkoxy-hydroxybenzaldehyde

#75
20150133697
2015-05-14

Method for producing glycols from oxirane compound

#76
20150133691
2015-05-14

Recovery method and recycling method for boron trifluoride complex

#77
20150057468
2015-02-26

Process for producing propylene glycol methyl ether

#78
20140332367
2014-11-13

Method of separation

#79
20140296542
2014-10-02

Method for recovering di-trimethylolpropane and trimethylolpropane-enriched product streams from the side streams of trimethylolpropane production

#80
20140288318
2014-09-25

Method for recovering di-trimethylolpropane and trimethylolpropane-enriched product streams from the side streams of trimethylolpropane production

#81
20140284202
2014-09-25

Method for recovering di-trimethylolpropane by distillation

#82
20140187806
2014-07-03

Process for removing oxygenate from an olefin stream

#83
20130324622
2013-12-05

Method for producing dimethyl ether using a separator

#84
20130303806
2013-11-14

Method for purification of mixtures comprising MTBE as well as production of isobutene by splitting of mixtures comprising MTBE

#85
20130184498
2013-07-18

Process for the production of dimethyl ether

#86
20130184497
2013-07-18

Method for producing ditrimethylolpropane

#87
20130172644
2013-07-04

Process for preparing lower olefins from an oxygenate

#88
20130131392
2013-05-23

METHODS FOR PRODUCING ETHYL TERT-BUTYL ETHER

#89
20130131391
2013-05-23

Method for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the side-streams in trimethylolpropane production

#90
20130081935
2013-04-04

Distillation method for the purification of sevoflurane and the maintenance of certain equipment that may be used in the distillation process

#91
20130046117
2013-02-21

Process for the manufacturing of sevoflurane

#92
20120323021
2012-12-20

METHOD FOR PRODUCING A HIGH-PURITY AROMATIC METHYL ALCOHOL AND HIGH-PURITY AROMATIC METHYL ALCOHOL COMPOSITION HAVING EXCELLENT PRESERVATION STABILITY

#93
20120289750
2012-11-15

Process and Apparatus for Coupling Separation and Purification of Ethyl Tert-Butyl Ether

#94
20120215033
2012-08-23

Process for preparing divinyl ethers

#95
20110160492
2011-06-30

Method of producing diethylene-glycol tert-butyl ether using isobutylene and diethylene glycol

#96
20110136713
2011-06-09

Hydrofluoroalcohols with improved thermal and chemical stability

#97
20110040129
2011-02-17

Process for the production of dimethyl ether

#98
20100280283
2010-11-04

Distillation Method for the Purification of Sevoflurane and the Maintenance of Certain Equipment that May be Used in the Distillation Process

#99
20100249465
2010-09-30

PROCESS FOR PRODUCTION OF HIGH-PURITY VINYL ETHER

#100
20100179354
2010-07-15

NOVEL ALKOXY-ETHERS AND ALKOXYLATES THEREOF

#101
20100168450
2010-07-01

NOVEL BRANCHED ALKOXYLATES

#102
20100144931
2010-06-10

Process for preparation of methyl metharylate using recycled methanol

#103
20100029994
2010-02-04

PRODUCTION OF BUTENES AND DERIVATIVES THEREFROM FROM DRY ETHANOL

#104
20090281359
2009-11-12

Process for olefin etherification

#105
20090275785
2009-11-05

Distillation Method For The Purification Of Sevoflurane And The Maintenance Of Certain Equipment That May Be Used In The Distillation Process

#106
20090048468
2009-02-19

Method for the production of dimethyl ether

#107
20080306311
2008-12-11

Method for Producing an Alpha-Chiral Chloromethyl Compound in a Pure Form

#108
20080306309
2008-12-11

Separation/purification of desflurane from hydrogen fluoride

#109
20080214875
2008-09-04

Purification of Fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether (sevoflurane)

#110
20080132734
2008-06-05

Process for making dibutyl ethers from dry 2-butanol

#111
20080132733
2008-06-05

Process for making dibutyl ethers from aqueous 2-butanol

#112
20080058575
2008-03-06

Process for the dissociation of MTBE

#113
20080058570
2008-03-06

Process for the dissociation of MTBE

#114
20080058569
2008-03-06

Process for the dissociation of MTBE

#115
20070203369
2007-08-30

Process for preparing ethyl tert-butyl ether from technical mixtures of C4 hydrocarbons

#116
20070149825
2007-06-28

Process for making alkylene glycol ether compositions useful for metal recovery

#117
20070066855
2007-03-22

Process for the production of dimethyl ether and the co-production of H2O

#118
20060264681
2006-11-23

Preparation of highly pure methyl tert-butyl ether

#119
20060235246
2006-10-19

Etherification process

#120
20060151310
2006-07-13

Method for the distillative separation of a mixture containing vinyl ether and alchol

#121
20060122444
2006-06-08

Method for producing butene oligomers and tert-butyl ethers from Cflows containing isobutene

#122
20060030741
2006-02-09

Etherification process

#123
20050245769
2005-11-03

Process for isolating highly pure 2-methoxypropene

#124
20050234268
2005-10-20

Chromatographic method for the analysis of both in process and finished sevoflurane

#125
20050085673
2005-04-21

Tripropylene glycol production

#126
16559912
2020-12-15

Process to make aromatic enol ethers and olefin isomers of aromatic enol ethers

#127
15224542
2018-07-31

Methods of purifying crude sevoflurane

#128
14524754
2015-10-27

Method for coproducing isobutene and ETBE from tert-Butanol mixture

#129
12705956
2015-08-11

Methods for cleaning distilling columns