Process for the preparation of diisocyanates

Details Process for the preparation of diisocyanates Process for the preparation of diisocyanates

2005-08-16

2005-08-16

Zucker, Paul A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Isocyanate esters

Reexamination Certificate

active

06930199

ABSTRACT:
The invention relates to a process for the preparation of isocyanates in the gas phase, in which the possibilities for back-mixing and byproduct formation are reduced by improving the mixing of the starting materials in a tubular reactor.

REFERENCES:
patent: 4847408 (1989-07-01), Frosch et al.
patent: 5391683 (1995-02-01), Joulak et al.
patent: 5633396 (1997-05-01), Bischof et al.
Justus Liebigs Annalen der Chemie, 562, (month unavailable) 1949, p. 108, Werner Siefken, Mono- und Polyisocyanate.

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