Title:
METHOD FOR PRODUCING CHLORINE FROM HYDROCHLORIC ACID AND INTEGRATED METHOD FOR PRODUCING ISOCYANATES
Document Type and Number:
WIPO Patent Application WO2004037718
Kind Code:
A3
Abstract:
The invention relates to a method for producing chlorine by oxidising hydrogen chloride in the presence of a catalyst, whereby hydrogen chloride is not used in a gaseous form, but at least partially in the form of hydrochloric acid. In an especially preferred form of embodiment, the feed gas flow containing hydrogen chloride is obtained from phosgene and primary amines during the isocyanate synthesis, and the product gas flow containing chlorine is used to produce the phosgene which is subsequently reacted with the primary amines to form isocyanates. The invention thus also relates to an integrated method for producing organic isocyanates.
Inventors:
WALSDORFF CHRISTIAN (DE)
FIENE MARTIN (DE)
KUHRS CHRISTIAN (DE)
STROEFER ECKHARD (DE)
HARTH KLAUS (DE)
FIENE MARTIN (DE)
KUHRS CHRISTIAN (DE)
STROEFER ECKHARD (DE)
HARTH KLAUS (DE)
Application Number:
PCT/EP2003/011910
Publication Date:
June 03, 2004
Filing Date:
October 27, 2003
Export Citation:
Assignee:
BASF AG (DE)
WALSDORFF CHRISTIAN (DE)
FIENE MARTIN (DE)
KUHRS CHRISTIAN (DE)
STROEFER ECKHARD (DE)
HARTH KLAUS (DE)
WALSDORFF CHRISTIAN (DE)
FIENE MARTIN (DE)
KUHRS CHRISTIAN (DE)
STROEFER ECKHARD (DE)
HARTH KLAUS (DE)
International Classes:
C01B7/04; C01B7/07; C07C263/10; (IPC1-7): C01B7/04
Foreign References:
| US2542961A | 1951-02-20 | |||
| EP0618170A1 | 1994-10-05 | |||
| US4394367A | 1983-07-19 | |||
| US4774070A | 1988-09-27 | |||
| US2312952A | 1943-03-02 | |||
| EP1099666A1 | 2001-05-16 | |||
| EP0765838A1 | 1997-04-02 |
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Previous Patent: WO/2004/037717
Next Patent: POWDERY OR GRANULAR ALUMINA, PROCESS FOR PRODUCING THE SAME, AND PRODUCT CONTAINING THE SAME
Next Patent: POWDERY OR GRANULAR ALUMINA, PROCESS FOR PRODUCING THE SAME, AND PRODUCT CONTAINING THE SAME