Separation or purification

Industry

CPC
C07D201/16

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CCHEMISTRY METALLURGY C07Organic chemistry C07DHETEROCYCLIC COMPOUNDS C07D201/00Preparation, separation, purification or stabilisation of unsubstituted lactams

Current Industry

C07D201/16Separation or purification

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Process for the purification of caprolactam from a solution of crud...
- Patent number 11,208,380
- Issue date Dec 28, 2021
- AquafilSLO d.o.o.
- Anacleto Dal Moro
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the purification of caprolactam from a solution of crud...
- Patent number 10,787,417
- Issue date Sep 29, 2020
- AquafilSLO d.o.o.
- Anacleto Dal Moro
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Efficient process for the synthesis of cyclic amides
- Patent number 10,093,622
- Issue date Oct 9, 2018
- ANTHEA AROMATICS PRIVATE LIMITED
- Manoj Kumar Mohapatra
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing epoxy compound containing hydrogen peroxide st...
- Patent number 10,005,742
- Issue date Jun 26, 2018
- Nissan Chemical Industries, Ltd.
- Kazuki Hirasada
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process and apparatus for producing ammonium sulfate crystals
- Patent number 9,908,785
- Issue date Mar 6, 2018
- CAP III B.V.
- Johan Thomas Tinge
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the recovery of ε-caprolactam from extract water
- Patent number 9,562,008
- Issue date Feb 7, 2017
- Technip Zimmer GmbH
- Andreas Bormann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production method of N-vinyl-2-pyrrolidone
- Patent number 9,096,516
- Issue date Aug 4, 2015
- Nippon Shokubai Co., Ltd.
- Hideto Sugiura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing purified caprolactam from the Beckmann rearra...
- Patent number 8,841,445
- Issue date Sep 23, 2014
- BASF SE
- Rolf-Hartmuth Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Washing of an organic phase comprising caprolactam
- Patent number 8,604,188
- Issue date Dec 10, 2013
- DSM IP Assets B.V.
- Theodorus Maria Smeets
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for separating amide from amino acid ionic liquid
- Patent number 8,552,180
- Issue date Oct 8, 2013
- China Petrochemical Development Corporation
- Cheng-Fa Hsieh
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Continuous process for the extraction of polyamide-6
- Patent number 8,541,540
- Issue date Sep 24, 2013
- Lurgi Zimmer GmbH
- Klaus Kirsten
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the purification of lactams
- Patent number 8,231,765
- Issue date Jul 31, 2012
- Rhodia Polyamide Intermediates
- Daniel Amoros
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
System and method for recovering caprolactam from rearrangement mix...
- Patent number 8,193,348
- Issue date Jun 5, 2012
- China Petrochemical Development Corporation
- Chien-Hsien Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
System and process for purifying an aqueous solution of crude capro...
- Patent number 7,700,767
- Issue date Apr 20, 2010
- China Petrochemical Development Corporation
- Chien-Hsien Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for recovering caprolactam from aqueous caprolactam product...
- Patent number 7,615,137
- Issue date Nov 10, 2009
- DSM IP Assets B.V.
- Arnold G M Jetten
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for purifying caprolactam
- Patent number 7,501,047
- Issue date Mar 10, 2009
- BASF Aktiengesellschaft
- Hermann Luyken
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for purifying lactams
- Patent number 7,384,518
- Issue date Jun 10, 2008
- Rhodia Polyamide Intermediates
- Daniel Amoros
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for purifying caprolactam
- Patent number 7,365,195
- Issue date Apr 29, 2008
- DSM IP Assets B.V.
- Joannes Albertus Wilhelmus J. A. W. Lemmens
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification of N-(2-hydroxyethyl)-2-pyrrolidone
- Patent number 7,238,260
- Issue date Jul 3, 2007
- Lyondell Chemical Technology, L.P.
- Andrew P. Kahn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification of caprolactam
- Patent number 7,217,818
- Issue date May 15, 2007
- BASF Aktiengesellschaft
- Rolf-Hartmuth Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for recovering caprolactam
- Patent number 7,141,668
- Issue date Nov 28, 2006
- DSM IP Assets B.V.
- Theodorus M Smeets
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for purifying caprolactam from waste containing polyamide us...
- Patent number 7,129,347
- Issue date Oct 31, 2006
- Zimmer Aktiengesellschaft
- Rudolf Kampf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for separating ammonia from solutions containing caprolactam...
- Patent number 6,896,772
- Issue date May 24, 2005
- BASF Aktiengesellschaft
- Hermann Luyken
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for processing pyrollidone and n-vinyl pyrollidone residues
- Patent number 6,888,006
- Issue date May 3, 2005
- BASF Aktiengesellschaft
- Herbert Helfert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for recovering and purifying caprolactam from an organic so...
- Patent number 6,849,731
- Issue date Feb 1, 2005
- DSM IP Assets B.V.
- Maria Louisa Christina Dsinter-De Hondt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the crystallization of non-sucrose substances
- Patent number 6,821,339
- Issue date Nov 23, 2004
- Finnfeeds Finland Oy
- Kristian Eriksson
- C13 - SUGAR INDUSTRY
Information Patent Grant
Process for the separation of a ketoxime or aldoxime from an amide
- Patent number 6,706,153
- Issue date Mar 16, 2004
- DSM N.V.
- Yvonne H. Frentzen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for obtaining pure n-vinyl pyrrolidone
- Patent number 6,703,511
- Issue date Mar 9, 2004
- BASF Aktiengesellschaft
- Bernd Eck
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of cyclic lactams
- Patent number 6,683,178
- Issue date Jan 27, 2004
- BASF Aktiengesellschaft
- Frank Ohlbach
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of caprolactam
- Patent number 6,677,449
- Issue date Jan 13, 2004
- BASF Aktiengesellschaft
- Peter Bassler
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
COMPOSITIONS AND METHODS FOR REMOVAL OF N-METHYL-2-PYRROLIDONE (NMP...
- Publication number 20240132446
- Publication date Apr 25, 2024
- Refined Technologies, Inc.
- Jerrod Overholt
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PURIFICATION METHOD FOR LAUROLACTAM
- Publication number 20240076450
- Publication date Mar 7, 2024
- Hanwha Solutions Corporation
- Jeongseok PARK
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Ammonium Sulphate Production on Industrial Scale
- Publication number 20230054797
- Publication date Feb 23, 2023
- CAP III BV.
- Johan Thomas Tinge
- C01 - INORGANIC CHEMISTRY
Information Patent Application
PREPARATION OF CAPROLACTAM FROM 6-AMINO CAPROIC ACID OBTAINED IN A...
- Publication number 20210171459
- Publication date Jun 10, 2021
- Genomatica, Inc.
- Rudolf Philippus Maria GUIT
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR THE PURIFICATION OF CAPROLACTAM FROM A SOLUTION OF CRUD...
- Publication number 20210040036
- Publication date Feb 11, 2021
- AquafilSLO d.o.o.
- Anacleto Dal Moro
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Process for the purification of caprolactam from a solution of crud...
- Publication number 20190382339
- Publication date Dec 19, 2019
- AquafilSLO d.o.o.
- Anacleto Dal Moro
- C07 - ORGANIC CHEMISTRY
Information Patent Application
AN EFFICIENT PROCESS FOR THE SYNTHESIS OF CYCLIC AMIDES
- Publication number 20180093949
- Publication date Apr 5, 2018
- ANTHEA AROMATICS PRIVATE LIMITED
- Manoj Kumar MOHAPATRA
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR PRODUCING EPOXY COMPOUND CONTAINING HYDROGEN PEROXIDE ST...
- Publication number 20170275258
- Publication date Sep 28, 2017
- Nissan Chemical Industries, Ltd.
- Kazuki HIRASADA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR THE RECOVERY OF EPSILON-CAPROLACTAM FROM EXTRACT WATER
- Publication number 20160221943
- Publication date Aug 4, 2016
- TECHNIP ZIMMER GMBH
- Andreas Bormann
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PREPARATION OF CAPROLACTAM FROM 6-AMINO CAPROIC ACID OBTAINED IN A...
- Publication number 20160200677
- Publication date Jul 14, 2016
- Genomatica, Inc.
- Rudolf Philippus Maria GUIT
- C07 - ORGANIC CHEMISTRY
Information Patent Application
RS)-2-(2-oxo-4-phenylpyrrolidin-1-yl)acetamide compound having modu...
- Publication number 20140315972
- Publication date Oct 23, 2014
- Valentina Ivanovna Akhapkina
- G01 - MEASURING TESTING
Information Patent Application
PROCESS FOR PREPARING PURIFIED CAPROLACTAM FROM THE BECKMANN REARRA...
- Publication number 20140171638
- Publication date Jun 19, 2014
- BASF SE
- Rolf-Hartmuth Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
HIGH TEMPERATURE LACTAM NEUTRALISATION
- Publication number 20130211038
- Publication date Aug 15, 2013
- DSM IP Assets B. V.
- Hendrik Oevering
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CAPROLACTAM RECOVERY WITH MEMBRANE TREATMENT
- Publication number 20130211072
- Publication date Aug 15, 2013
- Maria Elena Avramescu
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PREPARATION OF CAPROLACTAM FROM 6-AMINO CAPROIC ACID OBTAINED IN A...
- Publication number 20130030146
- Publication date Jan 31, 2013
- DSM IP Assets B. V.
- Rudolf Philippus Maria Guit
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD OF MANUFACTURING EPSILON-CAPROLACTAM
- Publication number 20120330006
- Publication date Dec 27, 2012
- Hideto Nagami
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR REMOVING BY-PRODUCTS FROM N-VINYLAMIDES
- Publication number 20110245510
- Publication date Oct 6, 2011
- BASF SE
- Wolfgang Staffel
- C07 - ORGANIC CHEMISTRY
Information Patent Application
WASHING OF AN ORGANIC PHASE COMPRISING CAPROLACTAM
- Publication number 20110224428
- Publication date Sep 15, 2011
- Theodorus Maria Smeets
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PRODUCTION METHOD OF N-VINYL-2-PYRROLIDONE
- Publication number 20110218344
- Publication date Sep 8, 2011
- Nippon Shokubai Co., Ltd.
- Hideto SUGIURA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR SEPARATING AMIDE FROM AMINO ACID IONIC LIQUID
- Publication number 20110105793
- Publication date May 5, 2011
- China Petrochemical Development Corporation
- Cheng-Fa Hsieh
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CONTINUOUS PROCESS FOR THE EXTRACTION OF POLYAMIDE-6
- Publication number 20100048860
- Publication date Feb 25, 2010
- Klaus Kirsten
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
SYSTEM AND METHOD FOR RECOVERING CAPROLACTAM FROM REARRANGEMENT MIX...
- Publication number 20090312542
- Publication date Dec 17, 2009
- China Petrochemical Development Corporation
- Chien-Hsien LI
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Production Method of N-Vinyl-2-Pyrrolidone
- Publication number 20090088579
- Publication date Apr 2, 2009
- NIPPON SHOKUBAI CO., LTD
- Hideto Sugiura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the purification of lactams
- Publication number 20080230368
- Publication date Sep 25, 2008
- RHODIA POLYAMIDE INTERMEDIATES
- Daniel Amoros
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for Catalytic Hydrogenation Purification of Lactam Containin...
- Publication number 20080071081
- Publication date Mar 20, 2008
- Eric Lacroix
- C07 - ORGANIC CHEMISTRY
Information Patent Application
System and process for purifying an aqueous solution of crude capro...
- Publication number 20080058513
- Publication date Mar 6, 2008
- China Petrochemical Development Corporation
- Chien-Hsien Li
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for purifying caprolactam
- Publication number 20070060750
- Publication date Mar 15, 2007
- Joannes Albertus Wilhelmus J.A.W. Lemmens
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for rectifying n-vinyl-2-pyrrolidone
- Publication number 20060281928
- Publication date Dec 14, 2006
- Hideto Sugiura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for purifying caprolactam
- Publication number 20060090994
- Publication date May 4, 2006
- Hermann Luyken
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Purification of N-(2-hydroxyethyl)-2-pyrrolidone
- Publication number 20060086602
- Publication date Apr 27, 2006
- Andrew P. Kahn
- C07 - ORGANIC CHEMISTRY

Separation or purification

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Process for the purification of caprolactam from a solution of crud...

Process for the purification of caprolactam from a solution of crud...

Efficient process for the synthesis of cyclic amides

Method for producing epoxy compound containing hydrogen peroxide st...

Process and apparatus for producing ammonium sulfate crystals

Process for the recovery of ε-caprolactam from extract water

Production method of N-vinyl-2-pyrrolidone

Process for preparing purified caprolactam from the Beckmann rearra...

Washing of an organic phase comprising caprolactam

Method for separating amide from amino acid ionic liquid

Continuous process for the extraction of polyamide-6

Process for the purification of lactams

System and method for recovering caprolactam from rearrangement mix...

System and process for purifying an aqueous solution of crude capro...

Process for recovering caprolactam from aqueous caprolactam product...

Method for purifying caprolactam

Method for purifying lactams

Process for purifying caprolactam

Purification of N-(2-hydroxyethyl)-2-pyrrolidone

Purification of caprolactam

Process for recovering caprolactam

Method for purifying caprolactam from waste containing polyamide us...

Method for separating ammonia from solutions containing caprolactam...

Method for processing pyrollidone and n-vinyl pyrollidone residues

Process for recovering and purifying caprolactam from an organic so...

Process for the crystallization of non-sucrose substances

Process for the separation of a ketoxime or aldoxime from an amide

Method for obtaining pure n-vinyl pyrrolidone

Preparation of cyclic lactams

Preparation of caprolactam

Patents Applicationslast 30 patents

COMPOSITIONS AND METHODS FOR REMOVAL OF N-METHYL-2-PYRROLIDONE (NMP...

PURIFICATION METHOD FOR LAUROLACTAM

Ammonium Sulphate Production on Industrial Scale

PREPARATION OF CAPROLACTAM FROM 6-AMINO CAPROIC ACID OBTAINED IN A...

PROCESS FOR THE PURIFICATION OF CAPROLACTAM FROM A SOLUTION OF CRUD...

Process for the purification of caprolactam from a solution of crud...

AN EFFICIENT PROCESS FOR THE SYNTHESIS OF CYCLIC AMIDES

METHOD FOR PRODUCING EPOXY COMPOUND CONTAINING HYDROGEN PEROXIDE ST...

PROCESS FOR THE RECOVERY OF EPSILON-CAPROLACTAM FROM EXTRACT WATER

PREPARATION OF CAPROLACTAM FROM 6-AMINO CAPROIC ACID OBTAINED IN A...

RS)-2-(2-oxo-4-phenylpyrrolidin-1-yl)acetamide compound having modu...

PROCESS FOR PREPARING PURIFIED CAPROLACTAM FROM THE BECKMANN REARRA...

HIGH TEMPERATURE LACTAM NEUTRALISATION

CAPROLACTAM RECOVERY WITH MEMBRANE TREATMENT

PREPARATION OF CAPROLACTAM FROM 6-AMINO CAPROIC ACID OBTAINED IN A...

METHOD OF MANUFACTURING EPSILON-CAPROLACTAM

PROCESS FOR REMOVING BY-PRODUCTS FROM N-VINYLAMIDES

WASHING OF AN ORGANIC PHASE COMPRISING CAPROLACTAM

PRODUCTION METHOD OF N-VINYL-2-PYRROLIDONE

METHOD FOR SEPARATING AMIDE FROM AMINO ACID IONIC LIQUID

CONTINUOUS PROCESS FOR THE EXTRACTION OF POLYAMIDE-6

SYSTEM AND METHOD FOR RECOVERING CAPROLACTAM FROM REARRANGEMENT MIX...

Production Method of N-Vinyl-2-Pyrrolidone

Process for the purification of lactams

Method for Catalytic Hydrogenation Purification of Lactam Containin...

System and process for purifying an aqueous solution of crude capro...

Process for purifying caprolactam

Process for rectifying n-vinyl-2-pyrrolidone

Method for purifying caprolactam

Purification of N-(2-hydroxyethyl)-2-pyrrolidone