Catalytic conversion of an organic carbonate

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

Reexamination Certificate

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Details

C558S274000, C558S277000, C568S858000, C568S888000, C568S889000, C568S890000

Reexamination Certificate

active

06835858

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a method for the catalytic conversion of an organic carbonate using a zinc supported catalyst.
BACKGROUND OF THE INVENTION
JP-A-02188541 relates to converting propylene carbonate with water in the presence of a Lewis acid such as zinc chloride and a nitrogen containing organic base.
JP-A-6239806 relates to a method for the catalytic trans-esterification of alkylene carbonate with alcohol in the presence of a zinc oxide catalyst in particulate form.
It would be useful to provide a method for the catalytic conversion of organic carbonate, having an improved conversion rate and improved yield.
SUMMARY OF THE INVENTION
The present invention provides a method for the catalytic conversion of an organic carbonate to the corresponding diol, wherein the organic carbonate is contacted with alcohol and/or water in the presence of a zinc supported catalyst.


REFERENCES:
patent: 5218135 (1993-06-01), Buysch et al.
patent: 5489702 (1996-02-01), Doya et al.
patent: 2003/0078448 (2003-04-01), Buchanan et al.
patent: 2188541 (1990-07-01), None
patent: 6239806 (1994-08-01), None

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