C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/10 (2006.01) B01J 31/04 (2006.01) B01J 31/08 (2006.01)
Patent
CA 2354777
The present invention relates to a process for the preparation of alkylene glycols by reacting an alkylene oxide with water in the presence of a catalytic composition including a polycarboxylic acid derivative, having in its chain molecule one or more carboxyl groups and one or more carboxylate groups, the individual carboxyl and/or carboxylate groups being separated from each other in the chain molecule by a separating group consisting of at least one atom. Preferably the polycarboxylic acid derivative is immobilised on a solid support.
L'invention concerne un procédé de préparation de glycols d'alkylène consistant à faire réagir un oxyde d'alkylène avec de l'eau en présence d'une composition catalytique comprenant un dérivé d'acide polycarboxylique dont la chaîne contient un ou plusieurs groupes carboxyle et un ou plusieurs groupes carboxylate, les groupes individuels carboxyle et/ou carboxylate étant séparés les uns des autres dans la chaîne par un groupe séparateur composé d'au moins un atome. Le dérivé d'acide polycarboxylique est de préférence fixé sur un support solide.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Shell Internationale Research Maatschappij B.v.
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