Global Patent Index - EP 1237650 A1

EP 1237650 A1 2002-09-11 - VINYL ACETATE CATALYST COMPRISING METALLIC PALLADIUM AND GOLD AND PREPARED UTILIZING SONICATION

Title (en)

VINYL ACETATE CATALYST COMPRISING METALLIC PALLADIUM AND GOLD AND PREPARED UTILIZING SONICATION

Title (de)

MIT ULTRASCHALL HERGESTELLTER PALLADIUM UND GOLD ENTHALTENDER KATALYSATOR ZUR HERSTELLUNG VON VINYLACETAT

Title (fr)

CATALYSEUR DE L'ACETATE DE VINYLE COMPRENANT DU PALLADIUM METALLIQUE ET DE L'OR ET PREPARE PAR SONICATION

Publication

EP 1237650 A1 (EN)

Application

EP 00970972 A

Priority

  • US 0028723 W
  • US 44191199 A

Abstract (en)

[origin: WO0136091A1] A catalyst effective for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid, comprising a porous support on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium and gold, and optionally, one or more additional catalytically active metals such as copper, prepared by steps comprising impregnating the support with one or more aqueous solutions, of water-soluble compounds of the metals, fixing the metals on the support as water-insoluble compounds in one or more fixing steps by reaction with an appropriate alkaline compound, at least one of said fixing steps being carried out in a solution of the alkaline compound in which the impregnated support is immersed, while sonicating, i.e., applying ultrasound waves to, such solution, and reducing the water-insoluble compounds of the catalytically active metals to their free metallic form.

IPC 1-7 (main, further and additional classification)

B01J 23/52; B01J 23/44; B01J 23/89; B01J 37/02; B01J 37/34; C07C 67/055; C07C 69/01

IPC 8 full level (invention and additional information)

B01J 31/28 (2006.01); B01J 23/52 (2006.01); B01J 23/89 (2006.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01); B01J 37/16 (2006.01); B01J 37/34 (2006.01); C07B 61/00 (2006.01); C07C 67/055 (2006.01); C07C 69/15 (2006.01)

CPC (invention and additional information)

B01J 37/343 (2013.01); B01J 23/52 (2013.01); B01J 23/8926 (2013.01); C07C 67/055 (2013.01)

Combination set (CPC)

  1. C07C 67/055 + C07C 69/01
  2. C07C 67/055 + C07C 69/15

Citation (search report)

See references of WO 0136091A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0136091 A1 20010525; BR 0015179 A 20020618; CA 2389448 A1 20010525; CN 1391496 A 20030115; CZ 20021630 A3 20021016; EP 1237650 A1 20020911; JP 2003513788 A 20030415; MX PA02004920 A 20020918

INPADOC legal status


2004-01-02 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030614

2003-03-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030203

2002-09-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020606

2002-09-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE