ClassID:

91771

C07C51/252 - page 2 - CPC Classification

Classification description:

Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein

Recent Application in this class:
#301
20070117998
2007-05-24

Process for preparing acrolein or acrylic acid or a mixture thereof from propane

#302
20070106089
2007-05-10

Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products

#303
20070106088
2007-05-10

Hybrid catalyst systems and hybrid process for converting alkanes to alkenes and to their corresponding oxygenated products

#304
20070100155
2007-05-03

Single crystalline phase catalyst

#305
20070088092
2007-04-19

Process for preparing acrolein or acrylic acid or a mixture thereof from propane

#306
20070073084
2007-03-29

Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with high efficiency

#307
20070066845
2007-03-22

Method for production of acrylic acid and apparatus for production of acrylic acid

#308
20070049769
2007-03-01

Fixed bed multitube reactor

#309
20070043239
2007-02-22

Oxidation reactor, process for producing (meth)acrylic acids, and method for analyzing easily-polymerizable compounds

#310
20070043238
2007-02-22

Process for production of (meth)acrylic acid of (meth)acrolein

#311
20070038004
2007-02-15

Complex metal oxide catalyst with high (meth) acrylic acid selectivity

#312
20070032680
2007-02-08

Heterogeneously catalyzed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid

#313
20070032377
2007-02-08

Process for preparing shaped catalyst bodies whose active composition is a multielement oxide

#314
20070021632
2007-01-25

Gas-phase catalytic oxidation process and process for producing (METH) acrolein or (METH) acrylic acid

#315
20070021631
2007-01-25

Gas-phase catalytic oxidation process and process for producing (meth) acrolein or (meth) acrylic acid

#316
20070021630
2007-01-25

Catalyst for methacrolein oxidation and method for making and using same

#317
20070021629
2007-01-25

Catalyst for methacrolein oxidation and method for making and using same

#318
20070021296
2007-01-25

Catalyst for the oxidation of a mixed aldehyde feedstock to methacrylic acid and methods for making and using same

#319
20070010394
2007-01-11

Process for producing catalyst for methacrylic acid production

#320
20060276334
2006-12-07

Coated catalyst support body

#321
20060264668
2006-11-23

Method for producing methacrylic acid

#322
20060258529
2006-11-16

Process for preparing at least one target product by partial oxidation and/or ammoxidation of propylene

#323
20060245992
2006-11-02

Fixed-bed shell-and-tube reactor and its usage

#324
20060235243
2006-10-19

Fixed bed reactor for gas-phase catalytic oxidation and processes for producing acrolein or acrylic acid

#325
20060234861
2006-10-19

Support for gas-phase oxidation catalyst and process for its production, gas-phase oxidation catalyst, and process for producing acrylic acid

#326
20060229483
2006-10-12

Multiple riser reactor with centralized catalyst return

#327
20060211885
2006-09-21

Method of producing unsaturated aldehyde and/or unsaturated acid

#328
20060211884
2006-09-21

Method of producing unsaturated acid from olefin

#329
20060211883
2006-09-21

Method for producing unsaturated fatty acids

#330
20060205978
2006-09-14

Production process for catalyst

#331
20060201573
2006-09-14

Charging of a reactor

#332
20060199975
2006-09-07

Process for preparing at least one organic target compound by heterogeneously catalyzed gas phase partial oxidation

#333
20060183942
2006-08-17

Method for preparing catalysts and the catalysts produced thereby

#334
20060183940
2006-08-17

Method and device for the two-step production of acrylic acid

#335
20060161019
2006-07-20

Multiple catalyst system and its use in a high hydrocarbon space velocity process for preparing unsaturated aldehydes and acids

#336
20060154811
2006-07-13

Catalyst for producing methacrylic acid and preparation method thereof

#337
20060135813
2006-06-22

Method for the heterogeneously catalyzed partial gas phase oxidation of propene into acrylic acid

#338
20060135346
2006-06-22

Method of regenerating catalyst

#339
20060128561
2006-06-15

Method for preserving catalyst

#340
20060111575
2006-05-25

Non-routine reactor shutdown method

#341
20060106244
2006-05-18

Hydrothermally synthesized Mo-V-M-X oxide catalysts for the selective oxidation of hydrocarbons

#342
20060069280
2006-03-30

Annealed and promoted catalyst

#343
20060063951
2006-03-23

Catalyst and process for production of acrylic acid

#344
20060052634
2006-03-09

Single crystalline phase catalyst

#345
20060036111
2006-02-16

Catalyst for synthesis of unsaturated aldehyde, production process for said catalyst, and production process for unsaturated aldehyde using said catalyst

#346
20060020142
2006-01-26

Catalytic (AMM)oxidation process for conversion of lower alkanes to carboxylic acids and nitriles

#347
20060014980
2006-01-19

Catalyst for alpha, beta-unsaturated carboxylic acid production, process for producing the same, and process for producing alpha, beta-unsaturated carboxylic acid

#348
20060009655
2006-01-12

Method for starting up reactor and reactor system

#349
20060004229
2006-01-05

Preparation of acrylic acid by heterogeneously catalyzed partial gas phase oxidation of propylene

#350
20060004228
2006-01-05

Process for the selective conversion of alkanes to unsaturated carboxylic acids

#351
20060004227
2006-01-05

Preparation of acrolein or acrylic acid or a mixture thereof by heterogeneously catalyzed partial gas phase oxidation of propylene

#352
20060004226
2006-01-05

Preparation of acrolein or acrylic acid or a mixture thereof from propane

#353
20050288532
2005-12-29

Oxidation method

#354
20050277547
2005-12-15

NOx treated mixed metal oxide catalyst

#355
20050272952
2005-12-08

Preparation of acrylic acid by heterogeneously catalyzed gas phase partial oxidation of at least one C3 hydrocarbon precursor compound

#356
20050267313
2005-12-01

Process for producing (meth)acrolein or (meth)acrylic acid

#357
20050267309
2005-12-01

Process for producing (meth)acrylic acid and (meth)acrylic esters

#358
20050261521
2005-11-24

Method for producing composite oxide catalyst

#359
20050261520
2005-11-24

Process for producing catalyst for production of unsaturated carboxylic acid

#360
20050261517
2005-11-24

Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound

#361
20050245761
2005-11-03

Single crystalline phase catalyst

#362
20050239643
2005-10-27

Structured oxidation catalysts

#363
20050228197
2005-10-13

NOx treated mixed metal oxide catalyst

#364
20050222436
2005-10-06

Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof

#365
20050222435
2005-10-06

Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof

#366
20050215818
2005-09-29

Catalyst for production of acrylic acid and process for production of acrylic acid using the catalyst

#367
20050209485
2005-09-22

Method of producing unsaturated aldehyde and/or unsaturated acid

#368
20050209484
2005-09-22

Method of producing unsaturated aldehyde and/or unsaturated fatty acid

#369
20050209469
2005-09-22

Converting propylene in an oxygenate-contaminated propylene stream to non-polymerization derivative products

#370
20050209101
2005-09-22

Process and apparatus for fluid bed reactions

#371
20050203312
2005-09-15

Modified catalysts and process

#372
20050203309
2005-09-15

Modified catalysts and process

#373
20050202965
2005-09-15

Modified catalysts and process

#374
20050202964
2005-09-15

Modified catalysts and process

#375
20050187406
2005-08-25

Catalyst for partial oxidation and preparation method thereof

#376
20050176995
2005-08-11

Catalyst for catalytic gas phase oxidation of acrolein and process for producing acrylic acid by catalytic gas phase oxidation using said catalyst

#377
20050171380
2005-08-04

Process for the production of acrylic acid

#378
20050165253
2005-07-28

Process for producing catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid

#379
20050159620
2005-07-21

Catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid, and process for its production

#380
20050159619
2005-07-21

Catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid and process for producing the same

#381
20050153834
2005-07-14

Method for the production of a catalyst containing vanadium, phosphorus, and oxygen

#382
20050153831
2005-07-14

Heteropolyacid catalyst and method for producing the same

#383
20050148793
2005-07-07

Method of vapor phase catalytic oxidation using multitubular reactor

#384
20050143603
2005-06-30

Process for the oxidation of unsaturated hydrocarbons

#385
20050143602
2005-06-30

Oxidation reactor, process for producing (meth)acrylic acids, and method for analyzing easily-polymerizable compounds

#386
20050143601
2005-06-30

Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system

#387
20050137415
2005-06-23

Process for the selective (amm)oxidation of lower molecular weight alkanes and alkenes

#388
20050131254
2005-06-16

Multitube reactor, vapor phase catalytic oxidation method using the multitube reactor, and start up method applied to the multitube reactor

#389
20050131253
2005-06-16

Process for producing composite oxide catalyst

#390
20050107483
2005-05-19

Process for catalytic vapor phase oxidation

#391
20050107252
2005-05-19

Process for preparing mixed metal oxide catalyst

#392
20050101803
2005-05-12

Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of propene to acrylic acid

#393
20050096483
2005-05-05

Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of acrolein to acrylic acid

#394
20050090695
2005-04-28

Catalytic gas phase oxidation reaction

#395
20050090628
2005-04-28

Thermal separating process for removing at least one stream containing enriched (meth) acrylic monomers

#396
20050070736
2005-03-31

Method for preparing a catalyst for partial oxidation of acrolein

#397
20050065371
2005-03-24

Preparation of annular unsupported catalysts

#398
20050059838
2005-03-17

Process for producing (meth) acrylic acid compound

#399
20050049435
2005-03-03

Method of producing unsaturated aldehyde and unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system

#400
20050042154
2005-02-24

Reactor for partial oxidations having thermoplate modules

#401
20050038291
2005-02-17

Preparation of (meth)acrolein and/or (meth)acrylic acid

#402
20050033093
2005-02-10

Composite oxide catalyst and method for preparation thereof

#403
20050032918
2005-02-10

Operation of a continuous heterogeneously catalyzed gas phase partial oxidation of at least one organic compound

#404
20050023125
2005-02-03

Riser base

#405
20050020852
2005-01-27

Process for producing (meth)acrylic acid compound

#406
20050020851
2005-01-27

Preparation of (meth)acrolein and/or (meth)acrylic acid by heterogeneously catalyzed partial oxidation of C3 and/or C4 precursor compounds in a reactor having thermoplate modules

#407
20050006219
2005-01-13

Thermal separating process for removing at least one stream containing enriched (meth)acrylic monomers