Global Patent Index - EP 1019345 A1

EP 1019345 A1 2000-07-19 - PROCESS FOR THE PREPARATION OF PROPYNE

Title (en)

PROCESS FOR THE PREPARATION OF PROPYNE

Title (de)

VERFAHREN ZUR HERSTELLUNG VON PROPIN

Title (fr)

PROCEDE DE PREPARATION DE PROPYNE

Publication

EP 1019345 A1 (EN)

Application

EP 97902255 A

Priority

  • EP 97902255 A
  • EP 9700388 W
  • EP 96200166 A

Abstract (en)

[origin: WO9727160A1] The invention relates to a process for the preparation of propyne by contacting a propadiene-containing feed with an isomerization catalyst comprising a strong base dissolved in an amide solvent.

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

C07C 11/22; C07C 5/23; C07C 69/54

IPC 8 full level (invention and additional information)

B01J 23/04 (2006.01); B01J 31/02 (2006.01); C07B 61/00 (2006.01); C07C 5/23 (2006.01); C07C 11/22 (2006.01); C07C 67/38 (2006.01); C07C 69/54 (2006.01)

CPC (invention and additional information)

C07C 5/23 (2013.01); C07C 11/22 (2013.01); C07C 67/38 (2013.01); C07C 2527/24 (2013.01); C07C 2531/02 (2013.01)

Combination set (CPC)

  1. C07C 5/23 + C07C 11/22
  2. C07C 67/38 + C07C 69/54

Citation (search report)

See references of WO 9727160A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 9727160 A1 19970731; AU 1596697 A 19970820; AU 707322 B2 19990708; BR 9707172 A 19990406; CN 1209795 A 19990303; CZ 9802311 A3 19981216; EP 1019345 A1 20000719; JP 2000510818 A 20000822

INPADOC legal status


2000-08-30 [18W] WITHDRAWN

- Date of withdrawal: 20000626

2000-07-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980702

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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