Process for producing isocyanates

Details Process for producing isocyanates Process for producing isocyanates

1995-03-16

1996-03-26

Dees, Jose/ G.

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

Organic compounds

Isocyanate esters

C07C26300

Patent

active

055022448

ABSTRACT:
Provided is a process for producing isocyanates from carbamic acid esters which comprises thermally decomposing carbamic acid esters in the presence of a catalyst containing at least one compound selected from the group consisting of organic sulfonic acids and alkaline metal salts of organic sulfonic acids. Thereby, a high thermal decomposition rate can be provided and isocyanate can be obtained in a high yield.

REFERENCES:
patent: 4081472 (1978-03-01), Tsumura et al.
patent: 4388246 (1983-06-01), Sundermann et al.
patent: 5087739 (1992-02-01), Bohmholdt et al.
Synthetic High Polymers-Fred W. Billmeyer-Chemical Abstracts, vol. 91, No. 2, Jul. 9, 1979.

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