ClassID:

91803

C07C51/48 - CPC Classification

Classification description:

Preparation of carboxylic acids or their salts, halides or anhydrides; Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

Recent Application in this class:
#1
20260078234
2026-03-19

IMPROVED METHOD FOR PRODUCING ALPHA-BETA-UNSATURATED CARBOXYLIC ACIDS FROM POLY(3-HYDROXYALKANOATE)

#2
20260055045
2026-02-26

DOWNSTREAM SEPARATION OF MIXED DICARBOXYLIC ACIDS FROM OXIDATION OF HDPE VIA LIQUID-LIQUID EXTRACTION

#3
20260035636
2026-02-05

METHOD FOR ENHANCING THE EFFICIENCY OF OIL EXTRACTION PROCESS

#4
20260035331
2026-02-05

METHODS FOR EXTRACTING LEVULINIC ACID USING 2-METHYL TETRAHYDROFURAN

#5
20250340504
2025-11-06

METHOD FOR PREPARING ACRYLIC ACID

#6
20250276287
2025-09-04

SYSTEMS AND METHODS FOR ORGANIC ACID RECOVERY

#7
20250197312
2025-06-19

METHOD FOR RECOVERING IONIC LIQUID

#8
20250179246
2025-06-05

A LIQUID-LIQUID EXTRACTION METHOD FOR SEPARATING CARBOXYLATE MONOFUNCTIONAL PERFLUOROPOLYETHERS AND CARBOXYLATE DIFUNCTIONAL PERFLUOROPOLYETHERS

#9
20250162971
2025-05-22

METHOD FOR PREPARATION OF HIGH PURITY (METH)ACRYLIC ACID

#10
20250084025
2025-03-13

METHOD FOR PREPARING ACRYLIC ACID

#11
20250059126
2025-02-20

UTILIZATION OF POLYETHYLENE-CONTAINING MIXTURES TO FORM LONG-CHAIN ALKYL DICARBOXYLIC ACIDS BY WAY OF OXIDATIVE DEGRADATION

#12
20250002439
2025-01-02

METHOD FOR PREPARATION OF HIGH PURITY (METH)ACRYLIC ACID

#13
20240391861
2024-11-28

PROCESS FOR THE RECOVERY OF MONOPOTASSIUM GLUCARATE AND GLUCARIC ACID

#14
20240376036
2024-11-14

Methods of producing and recovering levulinic acid

#15
20240368064
2024-11-07

PRODUCTION AND SEPARATION OF 3-HYDROXYPROPIONIC ACID

#16
20240343884
2024-10-17

INTEGRATED PROCESS FOR THE PURIFICATION OF LEVULINIC ACID FROM TECHNICAL LIGNIN

#17
20240308943
2024-09-19

EXTRACTION, SEPARATION AND PURIFICATION OF CANNABINOIDS FROM CANNABIS STAIVA AND OTHER MARIJUANA BIOMASS

#18
20240270674
2024-08-15

METHOD FOR RECOVERING CARBOXYLIC ACID

#19
20240228418
2024-07-11

INTEGRATION FOR PROCESSING EFFLUENT OF OXIDATIVE DEHYDROGENATION (ODH) REACTOR

#20
20240208892
2024-06-27

EXTRACTION METHOD

#21
20240182398
2024-06-06

RECOVERY OF DICARBOXYLIC ACIDS FROM TRIGLYCERIDES

#22
20240092718
2024-03-21

METHODS FOR SYNTHESIZING SUBSTITUTED CARBOXYLIC ACIDS AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF

#23
20240043368
2024-02-08

METHOD FOR PREPARING ACRYLIC ACID

#24
20240018084
2024-01-18

Process for Removal of Fluoroorganic Compounds From Aqueous Media

#25
20230348353
2023-11-02

METHOD FOR RECOVERING MALONATE FROM A FERMENTATION BROTH

#26
20230265064
2023-08-24

METHOD FOR PRODUCING A PURIFIED CANNABINOID EXTRACT, AND A PURIFIED CANNABINOID EXTRACT OBTAINED THEREFROM

#27
20230219878
2023-07-13

Process for Recovering Oxidation By-Products

#28
20230219015
2023-07-13

EXTRACTION METHOD AND MIXTURE OF SUBSTANCES

#29
20230175025
2023-06-08

METHOD FOR PRODUCING HIGHER LINEAR FATTY ACIDS OR ESTERS

#30
20230151375
2023-05-18

Production and separation of 3-hydroxypropionic acid

#31
20230132585
2023-05-04

CATALYTIC AND CONTINUOUS THERMOCHEMICAL PROCESS OF PRODUCTION OF VALUABLE DERIVATIVES FROM ORGANIC MATERIALS AND/OR WASTE

#32
20230103803
2023-04-06

PROCESS FOR RECOVERING ACRYLIC ACID

#33
20230088684
2023-03-23

Processes for Producing Alkyl Salicylic Acids and Overbased Detergents Derived Therefrom

#34
20220380295
2022-12-01

METHOD FOR SEPARATING AND PREPARING MULTIPLE ISOMER COMPOUNDS FROM SEABUCKTHORN POMACE

#35
20220306562
2022-09-29

METHOD FOR PRODUCING LEVULINIC ACID IN MOLTEN SALT HYDRATE FROM CELLULOSE HYDROLYSIS

#36
20220289773
2022-09-15

A METHOD OF EXTRACTING CARBONIC ACID, ALIPHATIC ACIDS, ESTERS AND ALCOHOLS FROM AN AQUEOUS MEDIUM

#37
20220251469
2022-08-11

Botanical Oil Extraction Method and System

#38
20220177400
2022-06-09

Method of isolation of ARN acids from naphthenate deposits

#39
20220162145
2022-05-26

PROCESS FOR SEPARATION OF SATURATED AND UNSATURATED CARBOXYLIC ACIDS

#40
20220153673
2022-05-19

Methods for separation of azeotrope or azeotrope-like compositions of trifluoroiodomethane (CFI) and trifluoroacetyl chloride (CFCOCI)

#41
20220145211
2022-05-12

METHODS OF OBTAINING LIPIDS FROM A MICROBIAL CELL COMPOSITION

#42
20220033341
2022-02-03

EXTRACTION OF NATURAL FERULATE AND COUMARATE FROM BIOMASS

#43
20210395107
2021-12-23

PURIFICATION OF AQUEOUS SOLUTIONS CONTAINING FORMALDEHYDE AND USE OF THE PURIFIED SOLUTION IN AN ACRYLIC ACID PRODUCTION PROCESS

#44
20210363092
2021-11-25

Method for purifying organic acids

#45
20210355063
2021-11-18

Method for producing acetic acid

#46
20210292267
2021-09-23

Production and separation of 3-hydroxypropionic acid

#47
20210253508
2021-08-19

Levulinic acid purification

#48
20210122695
2021-04-29

Method for linkage recovery of organic acid in aqueous organic acid solution

#49
20210087132
2021-03-25

Method of reducing impurities in a catalyst for producing terephthalic acid

#50
20210017353
2021-01-21

Method of obtaining terephthalic acid from waste polyethylene terephthalate

#51
20210009496
2021-01-14

Production and separation of 3-hydroxypropionic acid

#52
20200360835
2020-11-19

Transferring a target substance between two liquid phases

#53
20200248098
2020-08-06

Botanical oil extraction method and system

#54
20200181060
2020-06-11

Extraction of natural ferulate and coumarate from biomass

#55
20200157041
2020-05-21

Process for the separation of long chain amino acids and dibasic acids

#56
20200139263
2020-05-07

Method of continuous recovery of (meth)acrylic acid and apparatus for the method

#57
20200123090
2020-04-23

Method for producing acetic acid

#58
20200079719
2020-03-12

Method for producing acetic acid

#59
20200002262
2020-01-02

Process for preventing the deposition of polymers in a process for purifying (meth)acrylic acid

#60
20190382329
2019-12-19

Method and apparatus for continuously recovering (meth)acrylic acid

#61
20190375701
2019-12-12

Synthesis of sodium formate and drilling fluid comprising the same

#62
20190375700
2019-12-12

Synthesis of sodium formate and drilling fluid comprising the same

#63
20190359549
2019-11-28

Recovery of oxalic acid from industrial ferrous oxalate

#64
20190248727
2019-08-15

Method for separating formic acid from a reaction mixture by means of extraction

#65
20190201809
2019-07-04

Methods of purifying cannabinoids using liquid:liquid chromatography

#66
20190160394
2019-05-30

Separating rare earth metal oxalates

#67
20190135728
2019-05-09

Method for purifying an aqueous lactic acid solution

#68
20190134532
2019-05-09

Methods of purifying cannabinoids, compositions and kits thereof

#69
20190083923
2019-03-21

Method of recovering (meth)acrylic acid

#70
20190077741
2019-03-14

Method for producing ferulic acid from corn brans in high purity and high yield

#71
20190071383
2019-03-07

Method of continuous recovery of (meth)acrylic acid and apparatus for the method

#72
20190055185
2019-02-21

Treatment method of composition containing fluorine-containing organic acid having carbon number of 2 to 7 and impurities

#73
20190055183
2019-02-21

Process to produce acetic acid with recycle of water

#74
20190055176
2019-02-21

Ethane oxidative dehydrogenation and acetic acid recovery

#75
20190054395
2019-02-21

Method of continuous recovery of (meth)acrylic acid and apparatus for the method

#76
20190010116
2019-01-10

Process for the separation of long chain amino acids and dibasic acids

#77
20190002397
2019-01-03

Process for the separation of long chain amino acids and dibasic acids

#78
20190002396
2019-01-03

Process for the separation of long chain amino acids and dibasic acids

#79
20180362437
2018-12-20

Process for continuously recovering (meth)acrylic acid and apparatus for the process

#80
20180305288
2018-10-25

Method of preparing (meth)acrylic acid

#81
20180251418
2018-09-06

Synthesis of methacrylic acid from methacrolein-based alkyl methacrylate

#82
20180222879
2018-08-09

Methods of purifying cannabinoids using liquid:liquid chromatography

#83
20180222837
2018-08-09

Compositions comprising shikimic acid obtained from oil palm-based materials

#84
20180194706
2018-07-12

Method for manufacturing succinic acid

#85
20180162828
2018-06-14

Methods of purifying cannabinoids using liquid:liquid chromatography

#86
20180134646
2018-05-17

Process for preparing an unsaturated carboxylic acid salt

#87
20180127348
2018-05-10

Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

#88
20180118652
2018-05-03

Process for the isolation of levulinic acid

#89
20180117526
2018-05-03

Method and apparatus for treating offgases in a acetic acid production unit

#90
20180105846
2018-04-19

Method for extracting alpha-ketoglutarate and pyruvate simultaneously from microbial fermentation broth or enzymatic conversion solution

#91
20180093199
2018-04-05

Process for purification of an organic acid including an electrodialysis treatment step

#92
20180093198
2018-04-05

Process to control HI concentration in residuum stream

#93
20180087075
2018-03-29

Method of producing bioproducts

#94
20180087023
2018-03-29

METHOD OF PRODUCING BIOPRODUCTS

#95
20180037532
2018-02-08

Recovery process for functionalized compound reaction product

#96
20170369413
2017-12-28

Method for separating formic acid from a reaction mixture

#97
20170362158
2017-12-21

Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

#98
20170349525
2017-12-07

Lactylate purification process

#99
20170305830
2017-10-26

Optimized process for preparing methacrylic acid

#100
20170267621
2017-09-21

Process and plant for recovering acrylic acid

#101
20170260155
2017-09-14

Method for preparing isobenzofuran-1(3H)-one compound

#102
20170217872
2017-08-03

Method for the preparation of Intermediates for carboxy-fluoresceins and novel carboxy-fluorescein

#103
20170183285
2017-06-29

Solvent exchanger and method for improving the exchange efficiency of CTA solvent

#104
20170166508
2017-06-15

Catalyst recovery and recycling process during aromatic carboxylic acid production

#105
20170113994
2017-04-27

Process and plant for the purification of acrylic acid

#106
20170050119
2017-02-23

Simultaneous recovery of organic compounds and extractants

#107
20170022446
2017-01-26

Process for extracting carboxylic acids produced by anaerobic fermentation from fermentable biomass

#108
20170014729
2017-01-19

COLUMN FOR THERMAL TREATMENT OF FLUID MIXTURES, ESPECIALLY THOSE COMPRISING (METH)ACRYLIC MONOMERS

#109
20160376214
2016-12-29

Process for continuously recovering (meth)acrylic acid and apparatus for the process

#110
20160368850
2016-12-22

Method for removing mineral acid from levulinic acid

#111
20160347700
2016-12-01

Process for oxidation of alkyl aromatic compound to aromatic carboxylic acid

#112
20160340287
2016-11-24

Processes for obtaining microbial oil from microbial cells

#113
20160318840
2016-11-03

Processes for obtaining microbial oil from microbial cells

#114
20160257637
2016-09-08

Process for preparing acrylic acid

#115
20160221917
2016-08-04

Process to control HI concentration in residuum stream

#116
20160200657
2016-07-14

Process for continuously recovering (meth)acrylic acid and apparatus for the process

#117
20160176799
2016-06-23

ISOLATION AND PURIFICATION OF SHIKIMIC ACID

#118
20160175738
2016-06-23

Quaternary phosphinates with co-solvents for extracting Cto Ccarboxylic acids from aqueous streams

#119
20160175737
2016-06-23

Quaternary carboxylate compositions for extracting Cto Ccarboxylic acids from aqueous streams

#120
20160168067
2016-06-16

Process for the isolation of levulinic acid

#121
20160168062
2016-06-16

Process for depolymerization of lignin

#122
20160152542
2016-06-02

Process for the separation of levulinic acid from a biomass hydrolysate

#123
20160145185
2016-05-26

Method for continuously recovering (meth)acrylic acid and apparatus for the method

#124
20160145184
2016-05-26

Process for equilibrium-limited reactions

#125
20160145183
2016-05-26

Optimized process for extraction of ferulic acid with pretreatment

#126
20160137575
2016-05-19

Processes for producing acetic acid from a reaction medium having low ethyl iodide content

#127
20160122278
2016-05-05

PROCESS TO PREPARE LEVULINIC ACID

#128
20160107975
2016-04-21

Process for the separation of formic acid from methyltetrahydrofuran

#129
20160090370
2016-03-31

Solute-enhanced production of gamma-valerolactone (GVL) from aqueous solutions of levulinic acid

#130
20160090347
2016-03-31

Process and plant for recovering acrylic acid

#131
20160090344
2016-03-31

Method for dehydrating alpha-substituted carboxylic acids

#132
20160040929
2016-02-11

Column for thermal treatment of a fluid

#133
20160031793
2016-02-04

Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

#134
20160031786
2016-02-04

Process for preparation of methacrylic acid and methacrylic acid esters

#135
20160030857
2016-02-04

Component Recovery Process

#136
20150376105
2015-12-31

Processes for producing acetic acid

#137
20150329462
2015-11-19

Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

#138
20150315116
2015-11-05

PURE PLANT MOTHER LIQUOR SOLVENT EXTRACTION SYSTEM AND METHOD

#139
20150307433
2015-10-29

Process for the production of (meth)acrylic acid and derivatives and polymers produced therefrom

#140
20150299087
2015-10-22

Process for the isolation of levulinic acid and formic acid

#141
20150274632
2015-10-01

Process for recovering halogen promoters and removing permanganate reducing compounds

#142
20150274630
2015-10-01

Methods of makng high-purity dibasic acid compositions

#143
20150203432
2015-07-23

RECOVERY OF ORGANIC ACIS FROM DILUTE SALT SOLUTIONS

#144
20150203431
2015-07-23

Process for continuous recovering (meth)acrylic acid and apparatus for the process

#145
20150191659
2015-07-09

Process for desalting crude oil

#146
20150166455
2015-06-18

Extraction column and process for extracting a constituent from a fluid

#147
20150158804
2015-06-11

Chromatographic method for the production of polyunsaturated fatty acids

#148
20150126777
2015-05-07

Process for preparation of highly pure, non-yellowing methacrylic acid

#149
20150072386
2015-03-12

METHOD FOR PRODUCING ORGANIC ACID

#150
20150051423
2015-02-19

Process for the recovery of acetic acid

#151
20150031913
2015-01-29

Process for production of acrylic acid or its derivatives from hydroxypropionic acid or its derivatives

#152
20150031912
2015-01-29

Process for production of acrylic acid or its derivatives from hydroxypropionic acid or its derivatives

#153
20150025259
2015-01-22

Process for treating reaction solution containing long chain dicarboxylate

#154
20150021160
2015-01-22

Processes for producing acetic acid

#155
20150005529
2015-01-01

Integrated process for the production of acrylic acids and acrylates

#156
20150004663
2015-01-01

Method for isolating a carboxylic acid from an aqueous solution

#157
20140364646
2014-12-11

Method for purifying methacrylic acid

#158
20140349355
2014-11-27

Polycarboxylic acid extraction

#159
20140343317
2014-11-20

Extraction of carboxylic acids from a dilute aqueous stream

#160
20140335581
2014-11-13

Lactic acid extraction

#161
20140330039
2014-11-06

Method for recovering and purifying propionic acid

#162
20140322772
2014-10-30

Production of carboxylates and methane from biomass waste

#163
20140303401
2014-10-09

Process for recovering aliphatic monocarboxylic acids from distillation

#164
20140275581
2014-09-18

Method and an arrangement for separating at least one carboxylic acid and furfural from a dilute aqueous mixture thereof

#165
20140221687
2014-08-07

Process for reclaiming methacrylic acid from a high-boiler phase and an aqueous phase

#166
20140221686
2014-08-07

Method of recovering carboxylic acids from dilute aqueous streams

#167
20140187816
2014-07-03

Method for recovering anionic fluorinated emulsifier

#168
20140178951
2014-06-26

System and process for obtaining products from biomass

#169
20140128636
2014-05-08

Processes for producing acrylic acids and acrylates

#170
20140121411
2014-05-01

Process for separating monochloroacetic acid and dichloroacetic acid via extractive distillation

#171
20140121406
2014-05-01

PURE PLANT MOTHER LIQUOR SOLVENT EXTRACTION SYSTEM AND METHOD

#172
20140102157
2014-04-17

Method for reducing water content of an object to be treated

#173
20140091008
2014-04-03

Process for removing naphthenic acids from crude oil and crude oil distillates

#174
20140046092
2014-02-13

Removing hydrocarbon impurities from acetic acid production intermediate

#175
20140031501
2014-01-30

Process for the production of (meth)acrylic acid and derivatives and polyers produced therefrom

#176
20130345470
2013-12-26

Purification of 3-Hydroxypropionic Acid from Crude Cell Broth and Production of Acrylamide

#177
20130317241
2013-11-28

Process for concentrating omega-3 fatty acids

#178
20130296616
2013-11-07

Process for the manufacture of acetic acid

#179
20130281720
2013-10-24

Method for extracting organic compounds from aqueous mixtures

#180
20130274697
2013-10-17

Poly(acrylic acid) from bio-based acrylic acid and its derivatives

#181
20130274520
2013-10-17

Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

#182
20130274518
2013-10-17

Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

#183
20130274516
2013-10-17

Method for the production of acrylic acid or its derivatives

#184
20130274514
2013-10-17

Catalytic conversion of lactic acid to acrylic acid

#185
20130274513
2013-10-17

Process for production of acrylic acid or its derivatives from hydroxypropionic acid or its derivatives

#186
20130274512
2013-10-17

Catalysts conversion of hydroxypropionic acid or its derivatives to acrylic acid or its derivatives

#187
20130274095
2013-10-17

Catalysts for the production of acrylic acid or its derivatives

#188
20130274094
2013-10-17

Catalysts for the conversion of hydroxypropionic acid or its derivatives to acrylic acid or its derivatives

#189
20130261333
2013-10-03

Hydrocarboxylation of formaldehyde in the presence of a higher order carboxylic acid and heterogeneous catalyst

#190
20130253224
2013-09-26

Process for Producing Acrylic Acids and Acrylates

#191
20130217768
2013-08-22

Simple process to produce and separate water soluble and oil soluble antioxidative flavoring compositions from labiatae herbs using green solvents

#192
20130211138
2013-08-15

Removal of Contaminants from Liquid-Liquid Extraction Solvent

#193
20130204023
2013-08-08

Extraction towers and processes for using the same

#194
20130190531
2013-07-25

Process for the manufacture of acetic acid

#195
20130189749
2013-07-25

Compositions, Methods, and Kits for Polyunsaturated Fatty Acids from Microalgae

#196
20130165695
2013-06-27

PROCESS CONDITIONS FOR PRODUCING ACRYLIC ACID

#197
20130164801
2013-06-27

Method of preparing alkyl butyrate from fermented liquid using microorganisms

#198
20130150602
2013-06-13

Process for preparing and purifying fatty acids

#199
20130123526
2013-05-16

Process for preparing formic acid by reaction of carbon dioxide with hydrogen

#200
20130085301
2013-04-04

Processes for producing acrylic acids and acrylates

#201
20130085295
2013-04-04

PROCESSES FOR PRODUCING ACRYLIC ACIDS AND ACRYLATES

#202
20130085294
2013-04-04

Processes for producing acrylic acids and acrylates

#203
20130079551
2013-03-28

Recovery of aromatic carboxylic acids and oxidation catalyst

#204
20130012739
2013-01-10

PROCESS FOR PREPARING FORMIC ACID BY REACTING CARBON DIOXIDE WITH HYDROGEN

#205
20130012738
2013-01-10

Method for recovery of acetic acid from an aqueous solution thereof

#206
20120302766
2012-11-29

Solute-enhanced production of gamma-valerolactone (GVL) from aqueous solutions of levulinic acid

#207
20120302764
2012-11-29

Method to produce and recover levulinic acid and/or gamma-valerolactone from aqueous solutions using alkylphenols

#208
20120277489
2012-11-01

Integrated ethanol production by extracting halides from acetic acid

#209
20120264974
2012-10-18

Process for the production of acetic acid

#210
20120258510
2012-10-11

Vinyl acid monomer recovery

#211
20120220801
2012-08-30

Acetic acid production process

#212
20120215027
2012-08-23

Process for recovering and recycling an acid catalyst

#213
20120190890
2012-07-26

METHOD FOR PRODUCING BIORESOURCED ACRYLIC ACID FROM GLYCEROL

#214
20120178965
2012-07-12

Method for producing bioresourced acrylic acid from glycerol

#215
20120157711
2012-06-21

PROCESS FOR PREPARING FORMIC ACID BY REACTING CARBON DIOXIDE WITH HYDROGEN

#216
20120112127
2012-05-10

RECOVERY OF ORGANIC ACIDS

#217
20120108767
2012-05-03

Process for producing bio-resourced polymer-grade acrylic acid from glycerol

#218
20120090981
2012-04-19

Process for recovering halogen promoters and removing permanganate reducing compounds

#219
20120090980
2012-04-19

Process for recovering halogen promoters and removing permanganate reducing compounds

#220
20120078010
2012-03-29

Process for recovering and recycling an acid catalyst

#221
20120065415
2012-03-15

Process for separating solute material from an algal cell feed stream

#222
20120022290
2012-01-26

Process for preparing formic acid by reaction of carbon dioxide with hydrogen

#223
20110319658
2011-12-29

Process for preparing formic acid by reaction of carbon dioxide with hydrogen

#224
20110311405
2011-12-22

System for producing methacrylic acid

#225
20110288333
2011-11-24

Processes for producing acetic acid

#226
20110275853
2011-11-10

Process for the continuous transvinylation of carboxylic acids with vinyl acetate

#227
20110275852
2011-11-10

Process for the semi-continuous transvinylation of carboxylic acids with vinyl acetate

#228
20110263895
2011-10-27

Recovery of acetic acid from wood extracts

#229
20110201842
2011-08-18

METHOD FOR RECOVERING CARBOXYLIC ACIDS FROM DILUTE AQUEOUS STREAMS

#230
20110166385
2011-07-07

Method for separating a carboxylic acid in salified form bearing at least one halogen atom

#231
20110147307
2011-06-23

Method for recovering carboxylic acids from dilute aqueous streams

#232
20110137051
2011-06-09

Process for recovery of formic acid

#233
20110124915
2011-05-26

Process for preparing fluorocarboxylic acid

#234
20110112324
2011-05-12

Methanol carbonylation with improved aldehyde removal

#235
20110098490
2011-04-28

Process for preparation of formate salt

#236
20110077428
2011-03-31

Process for the production of acetic acid

#237
20110077424
2011-03-31

Process for recovering valued compounds from a stream derived from purification of methyl methacrylate

#238
20110064627
2011-03-17

A QUENCH COLUMN APPARATUS FOR SEPARATING METHACROLEIN FROM METHACRYLIC ACID IN A GAS PHASE PRODUCT FROM THE PARTIAL OXIDATION OF ISOBUTENE

#239
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2011-03-03

Method for preparing dicaffeoylquinic acids and use thereof in combating aphids

#240
20110028759
2011-02-03

Process for the Purification of Organic Acids

#241
20110004015
2011-01-06

Removing hydrocarbon impurities from acetic acid by ionic liquid extraction

#242
20100314239
2010-12-16

Method for purifying methacrylic acid

#243
20100312006
2010-12-09

PRODUCTION OF LEVULINIC ACID AND LEVULINATE ESTERS FROM BIOMASS

#244
20100305360
2010-12-02

Purification of acetic acid from wood acetylation process using extraction

#245
20100273970
2010-10-28

Process for preparation of high purity methacrylic acid

#246
20100249457
2010-09-30

Apparatus and method for recovery of acetic acid from an aqueous solution thereof

#247
20100249453
2010-09-30

Removing hydrocarbon impurities from acetic acid production intermediate

#248
20100228053
2010-09-09

Method for extracting methacrylic acid

#249
20100210871
2010-08-19

Reactive Extraction of Free Organic Acids from the Ammonium Salts Thereof

#250
20100187472
2010-07-29

Recovery of organic acids

#251
20100121101
2010-05-13

Methanol carbonylation with improved aldehyde removal

#252
20100121007
2010-05-13

Catalyst for producing of acrylic acid, method for producing acrylic acid using the catalyst and method for producing water-absorbent resin using the acrylic acid

#253
20100099765
2010-04-22

Compositions, methods, and kits for polyunsaturated fatty acids from microalgae

#254
20090306425
2009-12-10

Production of Carboxylic Acids

#255
20090281329
2009-11-12

Removing hydrocarbon impurities from acetic acid by ionic liquid extraction

#256
20090240080
2009-09-24

Process for the preparation of CETP(1)

#257
20090240074
2009-09-24

Process of making optically pure melphalan

#258
20090234157
2009-09-17

Purification of acetic acid from wood acetylation process using extraction

#259
20090229966
2009-09-17

Removing hydrocarbon impurities from acetic acid production process

#260
20090221705
2009-09-03

OMEGA 3

#261
20090137843
2009-05-28

METHOD FOR PRODUCING ORGANIC ACID

#262
20090118540
2009-05-07

Method For Producing Pyruvic Acid

#263
20090093034
2009-04-09

Method for separation of lactic acid component from lactic acid fermentation liquor, and separation apparatus

#264
20090031454
2009-01-29

Fatty acid hydroxylases and uses thereof

#265
20090026415
2009-01-29

Process to produce an enriched composition

#266
20090011483
2009-01-08

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#267
20090011482
2009-01-08

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#268
20090004711
2009-01-01

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#269
20090004710
2009-01-01

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#270
20090004709
2009-01-01

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#271
20090004708
2009-01-01

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#272
20090004707
2009-01-01

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#273
20080230480
2008-09-25

Method for extracting lactic acid from aqueous suspensions

#274
20080194869
2008-08-14

Process for separating methacrolein from methacrylic acid in a gas phase product from the partial oxidation of isobutene

#275
20080183014
2008-07-31

Process for preparing acrylic acid

#276
20080161601
2008-07-03

PROCESS FOR THE RECOVERY OF CITRIC ACID

#277
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2008-06-26

PROCESS FOR THE PREPARATION OF CETP(1)

#278
20080119669
2008-05-22

Process for the Recovery of Organic Compounds from Mixtures Containing (Meth)Acrylic Acid by Extraction with a Protic Solvent

#279
20080119668
2008-05-22

Method for the Extractive Purification of (Meth) Acrylic Acid by Using a Separating Agent

#280
20080103335
2008-05-01

Removal of permanganate reducing compounds from methanol carbonylation process stream

#281
20080039650
2008-02-14

Versatile oxidation byproduct purge process

#282
20080027243
2008-01-31

Versatile oxidation byproduct purge process

#283
20070284317
2007-12-13

Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration

#284
20070232794
2007-10-04

Process for the purification of lanthanide carboxylates

#285
20070213298
2007-09-13

Omega 3

#286
20070203359
2007-08-30

Versatile oxidation byproduct purge process

#287
20070193960
2007-08-23

Process for recovering organic compounds from aqueous streams containing same

#288
20070167649
2007-07-19

METHOD FOR PRODUCING ORGANIC ACID

#289
20070161816
2007-07-12

METHOD FOR PRODUCING ORGANIC ACID

#290
20070068792
2007-03-29

System and method for acetic acid dehydration

#291
20070027342
2007-02-01

Process for separating and recovering 3-hydroxypropionic acid and acrylic acid

#292
20060264661
2006-11-23

Process to produce an enrichment feed

#293
20060264658
2006-11-23

Process to produce an enriched composition

#294
20060247468
2006-11-02

Process for the recovery of citric acid

#295
20060247467
2006-11-02

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

#296
20060247466
2006-11-02

Process for the production of acetic acid

#297
20060237356
2006-10-26

Process for controlling a hydraulic wash column

#298
20060160197
2006-07-20

Method for the production of glycolic acid from ammonium glycolate by solvent extraction

#299
20060149100
2006-07-06

Process for separating and recovering 3-hydroxypropionic acid and acrylic acid

#300
20060116532
2006-06-01

Purification of a monomer by extraction with a phase former and crystallization