Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2004-12-01
2009-10-06
Seaman, D. Margaret (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07598404
ABSTRACT:
A process for the production of an ether optionally with a diol and/or a lactone, by reaction of a corresponding organic feed material selected from unsaturated dicarboxylic acids and/or anhydrides, mono-esters of unsaturated dicarboxylic acids and/or anhydrides, diesters of unsaturated dicarboxylic acids and/or anhydrides, unsaturated lactones, and mixtures of two or more thereof in the presence of hydrogen which comprises the steps of-(a) supplying a stream comprising at least a portion of the organic feed material to a pre-reactor zone comprising catalyst and operating under reaction conditions and contacting said feed with a hydrogen containing stream such that at least some of the carbon carbon double bonds are saturated; (b) vaporising the at least partly saturated feed into the hydrogen containing stream in a vaporizing zone; (c) supplying the hydrogen-containing stream containing the vaporized at least partially saturated feed to a reaction zone comprising catalyst and operating under reaction conditions; (d) recovering from the reaction zone a product stream comprising the ether and optionally diol and/or lactone; and (e)recycling depleted hydrogen-containing stream to at least the pre-reactor zone or the vaporization zone.
REFERENCES:
patent: 6936727 (2005-08-01), Sutton et al.
patent: 1108702 (2001-06-01), None
patent: WO 86/03189 (1986-06-01), None
patent: WO 99/35113 (1999-07-01), None
patent: 03006446 (2003-01-01), None
International Search Report for International Application PCT/GB2004/005054, dated Feb. 22, 2005, 4 pages.
Backes Adrian Francis
Hiles Andrew George
Sutton David Mark
Chandrakumar Nizal S
Davy Process Technology Limited
Seaman D. Margaret
Senniger Powers LLP
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