ClassID:

91109

C07C29/82 - CPC Classification

Classification description:

Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring; Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by azeotropic distillation

Recent Application in this class:
#1
20250304515
2025-10-02

PROCESS FOR THE RECOVERY OF ETHANOL FROM CRUDE ETHYL ACETATE

#2
20250154093
2025-05-15

METHODS FOR SEPARATING THE BINARY AZEOTROPIC MIXTURE OF ETHYLENE GLYCOL AND ETHYLENE GLYCOL DIACETATE WITH SULFOLANE ENTRAINER

#3
20240417354
2024-12-19

METHOD OF PREPARING ISOPROPYL ALCOHOL

#4
20240317659
2024-09-26

PROCESS FOR THE PRODUCTION OF GLYCOLS

#5
20240182391
2024-06-06

Recovering Mono-ethylene Glycol

#6
20240174587
2024-05-30

METHOD FOR EXTRACTING ALCOHOLS FROM AN INITIAL MIXTURE COMPRISING ALCOHOLS IN AQUEOUS PHASE

#7
20240025828
2024-01-25

PROCESS FOR PRODUCING ALCOHOLS

#8
20230365482
2023-11-16

PROCESS FOR THE PRODUCTION OF GLYCOLS

#9
20230322652
2023-10-12

ETHANOL PRODUCTION VIA DISTILLATION AND DEHYDRATION

#10
20230271909
2023-08-31

METHOXYPROPANOLS SEPARATION INCLUDING AZEOTROPIC DISTILLATION

#11
20230150904
2023-05-18

Method for refining bio-based propylene glycol

#12
20230121726
2023-04-20

SEMICONDUCTOR TREATMENT LIQUID AND METHOD FOR MANUFACTURING SAME

#13
20230063030
2023-03-02

Method for Producing (Hydro)Halocarbon

#14
20230010850
2023-01-12

ORGANIC SOLVENT PRODUCTION VIA DISTILLATION AND DEHYDRATION

#15
20220213013
2022-07-07

System of concentrating and separating waste solvent liquid

#16
20210371363
2021-12-02

Method for refining bio-based propylene glycol

#17
20210340087
2021-11-04

Method for Refining Non-Petroleum Based Ethylene Glycol

#18
20210061741
2021-03-04

Isopropyl alcohol purification method

#19
20200399193
2020-12-24

Methods and systems for energy-efficient drying of co-products in biorefineries

#20
20200247738
2020-08-06

Methods and systems for energy-efficient drying of co-products in biorefineries

#21
20190247766
2019-08-15

Thermally integrated distillation systems and processes using the same

#22
20190169106
2019-06-06

Method for obtaining alcohols from aldehydes

#23
20190169105
2019-06-06

Method for obtaining alcohols from aldehydes III

#24
20190169104
2019-06-06

Method for obtaining alcohols from aldehydes II

#25
20180079702
2018-03-22

Process for the separation of glycols

#26
20170362150
2017-12-21

Process for the separation of glycols

#27
20170362145
2017-12-21

Process for preparing ethylene glycol from a carbohydrate source

#28
20170247313
2017-08-31

Breaking a methanol/methyl methacrylate azeotrope using pressure swing distillation

#29
20170174596
2017-06-22

Process for the separation of monoethylene glycol and 1,2-butanediol

#30
20160326080
2016-11-10

Process for the acid-catalysed dehydration of ethanol

#31
20160326074
2016-11-10

Process for the production of ethanol by hydrogenation of methyl acetate

#32
20160272913
2016-09-22

Two-step process for production of RON-enhanced mixed butanols and diisobutenes

#33
20160107964
2016-04-21

Method for condensing water-soluble organic matter and device for condensing water-soluble organic matter

#34
20150218064
2015-08-06

Integrated process for producing cumene and purifying isopropanol

#35
20150166445
2015-06-18

DEHYDRATION OF DILUTIONS OF COMPOUNDS FORMING AN AZEOTROPE WITH WATER

#36
20150166444
2015-06-18

Method for purification of alcohols

#37
20150159102
2015-06-11

Two-step process for production of RON-enhanced mixed butanols and diisobutenes

#38
20150152032
2015-06-04

BUTANOL RECOVERY PROCESS

#39
20150105593
2015-04-16

Process for producing volatile organic compounds from biomass material

#40
20140174904
2014-06-26

Method and apparatus for ethanol production

#41
20140094629
2014-04-03

Process for recovering ethanol with sidedraws to regulate C+ alcohols concentrations

#42
20140051895
2014-02-20

Dehydration method

#43
20130284584
2013-10-31

Process for separating ethylene glycol and 1,2-butanediol

#44
20130259766
2013-10-03

Process and apparatus for efficient recovery of dichlorohydrins

#45
20130253229
2013-09-26

Apparatus and process for using olefin as an azeotropic entrainer for isolating 1,3-DICHLORO-2-propanol from a 2,2′-oxybis (1-chloropropane) waste stream

#46
20130202497
2013-08-08

Process and apparatus for recovery of dichlorohydrins via codistillation

#47
20130144080
2013-06-06

PROCESS FOR OBTAINING A DIALKYL CARBONATE AND AN ALKYLENE GLYCOL

#48
20130131396
2013-05-23

Esterifying acetic acid to produce ester feed for hydrogenolysis

#49
20130032755
2013-02-07

Continuous process for preparing chlorohydrins

#50
20120285816
2012-11-15

METHOD FOR ISOLATING AN ALKANOL FROM AN AQUEOUS BIOTRANSFORMATION MIXTURE

#51
20120199786
2012-08-09

Method for making an epoxide

#52
20120136177
2012-05-31

Process for Preparation of Hexafluoroacetone Monohydrate

#53
20120108856
2012-05-03

Process for preparing dichlorohydrin

#54
20120010442
2012-01-12

Process for recovering ethanol with sidedraws to regulate Calcohols concentrations

#55
20120010420
2012-01-12

Process for producing an organic compound

#56
20110144404
2011-06-16

MTO Feed Purification

#57
20110098516
2011-04-28

Multi-stage process and apparatus for recovering dichlorohydrins

#58
20110028765
2011-02-03

Process and apparatus for efficient recovery of dichlorohydrins

#59
20100314320
2010-12-16

Dehydration system and dehydration method

#60
20100137653
2010-06-03

Process and apparatus for recovery of dichlorohydrins via codistillation

#61
20100137652
2010-06-03

Multi-stage process and apparatus for recovering dichlorohydrins

#62
20100137621
2010-06-03

Process and apparatus for reducing heavy byproduct formation during distillation

#63
20100105965
2010-04-29

Process and apparatus for azeotropic recovery of dichlorohydrins

#64
20100105964
2010-04-29

Process for the manufacture of dichloropropanol

#65
20100029994
2010-02-04

PRODUCTION OF BUTENES AND DERIVATIVES THEREFROM FROM DRY ETHANOL

#66
20090166174
2009-07-02

Process for producing allyl alcohol

#67
20090131631
2009-05-21

Method for making a chlorohydrin

#68
20080275277
2008-11-06

Processes for isolating or purifying propylene glycol, ethylene glycol and products produced therefrom

#69
20080214848
2008-09-04

Method For Making an Epoxy Starting From a Chlorhydrine

#70
20080207930
2008-08-28

Process for producing a chlorhydrin from a multihydroxylated aliphatic hydrocarbon and/or ester thereof in the presence of metal salts

#71
20080200701
2008-08-21

Method For Making a Chlorohydrin Starting With a Polyhydroxylated Aliphatic Hydrocarbon

#72
20080200642
2008-08-21

Method for making a chlorhydrine by reaction between a polyhydroxylated aliphatic hydrocarbon and a chlorinating agent

#73
20080194884
2008-08-14

Method for making chlorohydrin in liquid phase in the presence of heavy compounds

#74
20080194851
2008-08-14

Continuous method for making chlorhydrines

#75
20080194850
2008-08-14

Method for Making an Epoxide Starting with a Polyhydroxylated Aliphatic Hydrocarbon and a Chlorinating Agent

#76
20080194849
2008-08-14

Method for making a chlorohydrin by chlorinating a polyhydroxylated aliphatic hydrocarbon

#77
20080194848
2008-08-14

Method for converting polyhydroxylated aliphatic hydrocarbons into chlorohydrins

#78
20080194847
2008-08-14

Method for preparing chlorohydrin by converting polyhydroxylated aliphatic hydrocarbons

#79
20080161613
2008-07-03

Method for making chlorohydrin in corrosion-resistant equipment

#80
20080154050
2008-06-26

Method for making an epoxide

#81
20080045728
2008-02-21

Conversion of a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin

#82
20060151310
2006-07-13

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

#83
20050242031
2005-11-03

Method for the production of anhydrous tert butanol

#84
17833156
2022-11-08

Production method and production device of high-purity 1,6-hexanediol

#85
14134333
2015-04-28

Processes for producing multi-carbon alcohols