C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/10 (2006.01) C07C 31/20 (2006.01)
Patent
CA 2448601
The present invention relates to a catalytic process for the preparation of alkylene glycols from alkylene oxide and water. Further, the invention relates to a method of preservation of catalysts in alkylene oxide containing systems. More in particular, it has been found that particular acids have a positive effect on the lifetime of catalyst systems based on anion exchange resins, and particularly those in the bicarbonate form.
La présente invention porte sur un procédé catalytique de préparation d'alkylène glycols à partir d'oxyde d'alkylène et d'eau. L'invention porte également sur un procédé de conservation de catalyseurs dans des systèmes contenant un oxyde d'alkylène. Plus spécifiquement, il s'avère que des acides particuliers ont un effet positif sur la durée de vie des systèmes de catalyseurs à base de résines échangeuses d'anions, et notamment ceux de la forme d'un bicarbonate.
Laprairie Daniel J.
Lee Guo-Shuh John
Rievert William J.
Strickler Gary R.
Timm Edward E.
Dow Global Technologies Inc.
Smart & Biggar
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