Global Patent Index - EP 0975563 A1

EP 0975563 A1 2000-02-02 - METHOD FOR ELIMINATING INHIBITORS OR POLYMERISATION OF MONOMER MIXTURES USING A DOPED ALUMINA

Title (en)

METHOD FOR ELIMINATING INHIBITORS OR POLYMERISATION OF MONOMER MIXTURES USING A DOPED ALUMINA

Title (de)

ENTFERNUNG VON POLYMERISIERUNGSINHIBITOREN AUS MISCHUNGEN VON MONOMEREN MITTELS DOTIERTEN ALUMINIUMOXIDS

Title (fr)

PROCEDE D'ELIMINATION D'INHIBITEURS DE POLYMERISATION DE MELANGES DE MONOMERES A L'AIDE D'UNE ALUMINE DOPEE

Publication

EP 0975563 A1 (FR)

Application

EP 98902067 A

Priority

  • FR 9800052 W
  • FR 9700624 A

Abstract (en)

[origin: FR2758553A1] The invention concerns a method for adsorbing inhibitors of polymerisation of ethylenically unsaturate monomers which consists in contacting these inhibitors with an alumina containing at least a compound of an element selected among the group formed by alkaline, earth-alkaline and rare earth, the alkaline and alkaline-earth elements being present in a content of at least 15 mmols for 100 g of alumina, and the rare earth elements in a content of at least 5 mmols for 100 g of alumina.

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

C07B 63/00

IPC 8 full level (invention and additional information)

C07B 63/00 (2006.01)

CPC (invention and additional information)

C07B 63/00 (2013.01)

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

FR 2758553 A1 19980724; FR 2758553 B1 19990416; AU 5870698 A 19980818; BR 9806987 A 20000314; CN 1248235 A 20000322; EP 0975563 A1 20000202; JP 2000508348 A 20000704; KR 20000070329 A 20001125; NO 993556 A 19990920; NO 993556 D0 19990720; WO 9832716 A1 19980730

INPADOC legal status


2002-05-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011023

2001-05-30 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010411

2000-02-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990712

2000-02-02 [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