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Title:
STABILIZATION OF OLEFIN METATHESIS PRODUCT MIXTURES
Document Type and Number:
WIPO Patent Application WO2004037754
Kind Code:
A3
Abstract:
A process of stabilizing an olefin metathesis product mixture, preferably, against double bond isomerization and thermal and chemical degradation. The process involves (a) contacting an olefin metathesis product mixture comprising one or more olefins produced in a metathesis process, a metathesis catalyst comprising a catalytic metal and one or more ligands, optionally, one or more metathesis catalyst degradation products, and optionally, one or more metals derived from sources other than the catalyst or catalyst degradation product(s), with an adsorbent, more preferably carbon; or alternatively, (b) subjecting the olefin metathesis product mixture to a two-step distillation, preferably, including short path wiped-film evaporation. A stabilized olefin metathesis product mixture is disclosed containing one or more olefins obtained in a metathesis process and having a total concentration of metal(s) of less than about 30 parts per million by weight.

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Inventors:
BURDETT KENNETH A (US)
MAUGHON BOB R (US)
AU-YEUNG PATRICK H (US)
Application Number:
PCT/US2003/030632
Publication Date:
October 14, 2004
Filing Date:
September 26, 2003
Export Citation:
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Assignee:
DOW GLOBAL TECHNOLOGIES INC (US)
BURDETT KENNETH A (US)
MAUGHON BOB R (US)
AU-YEUNG PATRICK H (US)
International Classes:
C07C7/00; C07C7/04; C07C7/12; C07C67/54; C07C67/56; (IPC1-7): C07C7/12; C07C7/13; C07C11/02; C07C57/02; C07C69/533
Foreign References:
US5539060A1996-07-23
US6156692A2000-12-05
US6197894B12001-03-06
US4772758A1988-09-20
DE10041345A12002-03-07
Other References:
PATENT ABSTRACTS OF JAPAN vol. 015, no. 221 (C - 0838) 6 June 1991 (1991-06-06)
TETRAHEDRON LETTERS, vol. 40, 1999, pages 4137 - 4140, XP002272589
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