ClassID:

93286

C07C303/06 - CPC Classification

Classification description:

Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups by reaction with sulfuric acid or sulfur trioxide

Recent Application in this class:
#1
20250223258
2025-07-10

OLIGOBUTYL BENZENE SULFONATE FOR LUBRICANTS AND FUELS

#2
20250092171
2025-03-20

HIGH-PURITY 4-(2-BROMOETHYL)BENZENESULFONIC ACID, HIGH-PURITY STYRENESULFONIC ACID COMPOUND DERIVED THEREFROM, AND POLYMER THEREOF, AND METHODS FOR PRODUCING SAME

#3
20250034086
2025-01-30

PRODUCTION PROCESS FOR 3,5-DI-TERT-UTYLBENZENESULFONIC ACID

#4
20240318382
2024-09-26

Sulfonated Lignin-Derived Compounds And Uses Thereof

#5
20240253025
2024-08-01

METHOD FOR PRODUCING INTERNAL OLEFIN, METHOD FOR PRODUCING INTERNAL OLEFIN SULFONATE, AND LOW-TEMPERATURE STABILIZATION METHOD

#6
20240132459
2024-04-25

PROCESS AND INTERMEDIATES FOR THE PREPARATION OF CERTAIN NEMATICIDAL SULFONAMIDES

#7
20230322662
2023-10-12

ALKANE MULTI-SULFONIC ACIDS, COMPOSITIONS THEREOF, AND RELATED METHODS

#8
20230304221
2023-09-28

Sulfonated Lignin-Derived Compounds And Uses Thereof

#9
20230160143
2023-05-25

Sulfonated lignin-derived compounds and uses thereof

#10
20230159444
2023-05-25

PROCESS FOR SYNTHESIZING SULFONATED TRIARYL METHANE COMPOUNDS

#11
20230159443
2023-05-25

METHOD FOR PRODUCING ALKANEDISULFONIC ACID COMPOUND

#12
20230090751
2023-03-23

METHOD FOR PRODUCING ALKANE DISULFONIC ACID COMPOUND

#13
20220348537
2022-11-03

PROCESS FOR MANUFACTURING ALKANESULFONIC ACIDS

#14
20220340518
2022-10-27

PROCESS FOR MANUFACTURING ALKANESULFONIC ACIDS

#15
20220332678
2022-10-20

PROCESS FOR THE PRODUCTION OF ALKANESULFONIC ACIDS

#16
20220289671
2022-09-15

METHOD FOR THE PREPARATION OF DIARYLMETHANE DYES AND TRIARYLMETHANE DYES INCLUDING ISOSULFAN BLUE

#17
20220274919
2022-09-01

RECOVERY OF WATER-FREE METHANESULFONIC ACID FROM THE BOTTOM STREAM OF A DISTILLATION COLUMN

#18
20220242839
2022-08-04

Process and intermediates for the preparation of certain nematicidal sulfonamides

#19
20220194895
2022-06-23

Process for the production of anhydrous methanesulfonic acid from methane and SO3

#20
20220153691
2022-05-19

Process for the preparation of haloalkanesulfonic acids from sulfur trioxide and a haloalkane at superacidic conditions

#21
20220033354
2022-02-03

CATIONS AS CATALYST IN THE PRODUCTION OF ALKANE SULFONIC ACIDS

#22
20220017458
2022-01-20

Method for the recycling or disposal of halocarbons

#23
20210309621
2021-10-07

Process and intermediates for the preparation of certain nematicidal sulfonamides

#24
20210276945
2021-09-09

Sulfonated lignin-derived compounds and uses thereof

#25
20210171457
2021-06-10

PROCESS FOR MAKING DIARYL SULFONES

#26
20210114978
2021-04-22

Method and production system for fully recovering and treating taurine mother liquor

#27
20210070700
2021-03-11

Process for the preparation of haloalkanesulfonic acids from sulfur trioxide and a haloalkane

#28
20210070699
2021-03-11

Amphiphilic Diphenyl Ether Compounds Derived from Alpha Olefins or Vinylidene Alpha Olefin Dimers

#29
20210032200
2021-02-04

Radical initiators and chain extenders for converting methane gas into methane-sulfonic acid

#30
20200399209
2020-12-24

Processes for the manufacture of secondary fatty alcohols, internal olefins and internal olefin sulfonates

#31
20200369604
2020-11-26

Catalysts for the synthesis of alkanesulfonic acids

#32
20200216388
2020-07-09

Process for the manufacturing of methane sulfonic acid

#33
20200208045
2020-07-02

N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and synthesis method thereof

#34
20200190027
2020-06-18

Process for the production of alkanesulfonic acids

#35
20200115332
2020-04-16

METHOD FOR THE PRODUCTION OF ALKANE SULFONIC ACIDS

#36
20200039927
2020-02-06

Process for purifying alkanesulfonic anhydride and process for producing alkanesulfonic acid using the purified alkanesulfonic anhydride

#37
20200002276
2020-01-02

Radical initiators and chain extenders for converting methane gas into methane-sulfonic acid

#38
20190390405
2019-12-26

Methods for processing lignocellulosic material

#39
20190276394
2019-09-12

Process for continuous industrial synthesis of alkane-suphonicacid

#40
20190270701
2019-09-05

Solvent-free alkane sulfonation

#41
20190256461
2019-08-22

Initiator for preparing alkanesulfonic acids from alkane and oleum

#42
20190241509
2019-08-08

Compound comprising certain level of bio-based carbon

#43
20190225626
2019-07-25

Isosulfan blue, its crystalline form and process for preparation thereof

#44
20190177257
2019-06-13

Optimization of O-sulfonated phenol production for cumene hydroperoxide cleavage

#45
20190152903
2019-05-23

Method for preparation of isosulfan blue

#46
20190152902
2019-05-23

Sulfonated aromatic compounds

#47
20190085006
2019-03-21

Method for producing low molecular weight aromatic lignin-derived compounds

#48
20180289645
2018-10-11

Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts

#49
20180222854
2018-08-09

Alpha-olefin sulfonic dimer acid process

#50
20180179153
2018-06-28

Process for making diaryl sulfones

#51
20180057453
2018-03-01

Alkylaromatic sulfonate compositions from mixed hydrocarbons

#52
20180057452
2018-03-01

Alkylaromatic sulfonate compositions from mixed hydrocarbons

#53
20180057451
2018-03-01

Alkylaromatic sulfonate compositions from mixed hydrocarbons

#54
20170253620
2017-09-07

Processes for forming coordination complexes containing monosulfonated catecholate ligands

#55
20170233318
2017-08-17

Optimization of O-sulfonated phenol production for cumene hydroperoxide cleavage

#56
20160289181
2016-10-06

Initiator for preparing alkanesulfonic acids from alkane and oleum

#57
20160289176
2016-10-06

Process for preparing alkanesulfonic acids from sulfur trioxide and an alkane

#58
20160145204
2016-05-26

Preparation of surfactants via cross-metathesis

#59
20160107980
2016-04-21

Cross metathesis of poly-branched poly-olefins

#60
20160074347
2016-03-17

Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts

#61
20150191425
2015-07-09

Process for sulfonating halobenzene derivatives with sulfur trioxide

#62
20150183732
2015-07-02

Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts

#63
20150073168
2015-03-12

Process for preparing an internal olefin sulfonate

#64
20140336409
2014-11-13

Process for preparing an internal olefin sulfonate

#65
20140323765
2014-10-30

Process for manufacturing haloaryl compounds from mixtures of isomers of dihalodiarylsulfone

#66
20140081043
2014-03-20

Method for the preparation of low overbased alkyltoluene sulfonate

#67
20130253219
2013-09-26

Production of alkane sulfonates

#68
20130245315
2013-09-19

Sulfonation in continuous-flow microreactors

#69
20130079261
2013-03-28

Sulfonated internal olefin surfactant for enhanced oil recovery

#70
20130023708
2013-01-24

Processes for making C-Colefins from Cand Cparaffins

#71
20120149938
2012-06-14

Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts

#72
20120129955
2012-05-24

Compositions comprising sulfonated estolides and alkyl ester sulfonates, methods of making them, and compositions and processes employing them

#73
20120111233
2012-05-10

Fluorosurfactants

#74
20110269989
2011-11-03

High shear system and process for the production of halogenated and/or sulfonated paraffins

#75
20110144337
2011-06-16

Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts

#76
20110046412
2011-02-24

Sulfonation of polyhydroxyaromatics

#77
20100305373
2010-12-02

Process for obtention of highly-lineal, adjustable-isomery monoalkylated aromatic compounds

#78
20100282467
2010-11-11

Sulfonated internal olefin surfactant for enhanced oil recovery

#79
20100056823
2010-03-04

Preparation of metallic dihydroxybenzene-disulfonates

#80
20100022802
2010-01-28

Preparation of alkylaromatic hydrocarbons and alkylaryl sulfonates

#81
20100022429
2010-01-28

Mixed salts of sulfonated estolides and other derivatives of fatty acids, and methods of making them

#82
20100017969
2010-01-28

Sulfonated estolide compositions containing magnesium sulfate and processes employing them

#83
20100016198
2010-01-21

Compositions comprising sulfonated estolides and alkyl ester sulfonates, methods of making them, and compositions and processes employing them

#84
20090306418
2009-12-10

Process for preparing alpha-sulfo-fatty acid ester salt surfactants

#85
20090299091
2009-12-03

Process for obtaining highly soluble linear alkylbenzene sulfonates

#86
20090221464
2009-09-03

Process to obtain a highly soluble linear alkylbenzene sulfonate

#87
20090188055
2009-07-30

Sulfonated estolides and other derivatives of fatty acids, methods of making them, and compositions and processes employing them

#88
20090163669
2009-06-25

METHOD OF MAKING A SYNTHETIC ALKYLARYL SULFONATE

#89
20090134066
2009-05-28

Method for producing alkyl-aromatic compounds by direct alkylation of aromatic hydrocarbons with alkanes

#90
20090099385
2009-04-16

Process for making alkaline earth metal borated sulfonates

#91
20090078910
2009-03-26

Functionalized long-chain olefin mixtures and uses therefor

#92
20090076300
2009-03-19

Method for immobilizing compound onto column carrier

#93
20090018359
2009-01-15

SYNTHETIC PETROLEUM SULFONATE

#94
20080306295
2008-12-11

Method and device for the sulfonation or sulfation of sulfonatable or sulfatable organic substances and for performing faster, strongly exothermic gas/liquid reactions

#95
20080242748
2008-10-02

Process for producing branched olefins from linear olefin/paraffin feed

#96
20080161591
2008-07-03

ANHYDROUS PROCESSING OF METHANE INTO METHANE-SULFONIC ACID, METHANOL, AND OTHER COMPOUNDS

#97
20080139840
2008-06-12

PROCESS FOR PREPARING ALKYL ARYL SULPHONIC ACIDS AND ALKYL ARYL SULPHONATES

#98
20070282151
2007-12-06

Manufacture of higher hydrocarbons from methane, via methanesulfonic acid, sulfene, and other pathways

#99
20070225536
2007-09-27

OLEFIN CONVERSION PROCESS AND OLEFIN RECOVERY PROCESS

#100
20070142665
2007-06-21

Method of making a synthetic petroleum sulfonate

#101
20070142258
2007-06-21

Method for producing alkylaryl compounds

#102
20070123439
2007-05-31

Process for making alkaline earth metal borated sulfonates

#103
20070021628
2007-01-25

Process for producing branched olefins from linear olefin/paraffin feed

#104
20060241328
2006-10-26

Method for producing alkyl aromatic compounds

#105
20060167308
2006-07-27

Process for the preparation of alkylarylsulfonates

#106
20060142626
2006-06-29

Alkylated aromatic compositions, zeolite catalyst compositions and processes for making the same

#107
20060142625
2006-06-29

Alkylated aromatic compositions, zeolite catalyst compositions and processes for making the same

#108
20060142624
2006-06-29

Zeolite Y alkylation catalysts

#109
20060100458
2006-05-11

Process for the conversion of methane

#110
20060052630
2006-03-09

Process for the producing alkylarylsulfonates by using modified, dimerized olefins

#111
20060036119
2006-02-16

Alkylated aromatic compositions, zeolite catalyst compositions and process for making the same

#112
20050287057
2005-12-29

Converting sulfur dioxide to sulfur trioxide in high-concentration manufacturing, using activated carbon with dopants and stripping solvent

#113
20050250970
2005-11-10

Zeolite Y alkylation catalysts

#114
20050222455
2005-10-06

Method for producing 3-hydroxy-2-methylbenzoic acid

#115
20050203322
2005-09-15

Zeolite Y alkylation catalysts

#116
20050202954
2005-09-15

Alkylated aromatic compositions, zeolite catalyst compositions and processes for making the same

#117
20050176991
2005-08-11

Process for preparing and olefinic hydrocarbon mixture

#118
20050165264
2005-07-28

Preparation of alkylaromatic hydrocarbons and alkylaryl sulfonates

#119
20050165250
2005-07-28

Olefin oligomerization process

#120
20050143616
2005-06-30

Process for olefin oligomerization

#121
20050070614
2005-03-31

Anhydrous processing of methane into methane-sulfonic acid, methanol, and other compounds

#122
16594661
2020-06-16

Cannabidiol-3-sulfonic acid, preparation method and application thereof, and cannabidiol derivative