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)

Citation (search report)

See references of WO 9832716A1

Designated contracting state (EPC)

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

DOCDB simple 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