Global Patent Index - EP 1002231 A1

EP 1002231 A1 2000-05-24 - ON-LINE ANALYSIS OF PROCESS GAS DURING THE PRODUCTION OF KETENE

Title (en)

ON-LINE ANALYSIS OF PROCESS GAS DURING THE PRODUCTION OF KETENE

Title (de)

ON-LINE-ANALYSE DER PROZESSGASE BEI DER HERSTELLUNG VON KETEN

Title (fr)

ANALYSE EN LIGNE DES GAZ UTILISES LORS DE LA PREPARATION DE CETENE

Publication

EP 1002231 A1 (DE)

Application

EP 98939639 A

Priority

  • DE 19733837 A
  • EP 9804655 W

Abstract (en)

[origin: DE19733837A1] A process is disclosed for the on-line analysis of a reactive gas mixture in a container, in particular a gas mixture containing ketene, diketene, acetic acid anhydride and/or acetic acid. The process is characterised in that part of the gas mixture is temporarily expanded in a sampling pipe and subjected to a mass spectrometric analysis through a probe integrated into the container and having an opening with a free cross-section smaller than or equal to 1 mm<2>.

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

G01N 33/00; G01N 1/22

IPC 8 full level (invention and additional information)

G01N 27/62 (2006.01); G01N 1/00 (2006.01); G01N 1/22 (2006.01); G01N 33/00 (2006.01); G01N 1/24 (2006.01)

CPC (invention and additional information)

G01N 1/2247 (2013.01); G01N 33/0011 (2013.01); G01N 2001/2261 (2013.01); G01N 2001/244 (2013.01); Y10T 436/24 (2013.01)

Citation (search report)

See references of WO 9908104A1

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

DE 19733837 A1 19990225; DE 19733837 C2 20000727; CA 2299248 A1 19990218; CN 1266488 A 20000913; EP 1002231 A1 20000524; JP 2001512828 A 20010828; US 6284547 B1 20010904; WO 9908104 A1 19990218

INPADOC legal status


2004-01-28 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030723

2003-06-25 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030512

2001-04-04 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: SIEMENS AXIVA GMBH & CO. KG

- Ref Legal Event Code: RAP1

2000-05-24 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000306

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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