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US 2013/0023694 A1Published application
Process for producing isocyanates
Assignee3M Innovative Properties Company
InventorsWolf Steiger, Peter Bissinger
Life of this patent
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Abstract
The invention relates a process for producing isocyanates comprising the steps of a) providing an azolide and optionally a solvent, and b) adding an acid at a temperature below about 40 C. The invention also relates to the isocyanate obtainable by such a process.
Claims15
A process for producing isocyanates comprising the steps of
- a) providing a component with an azolide moiety and optionally a solvent,
- b) adding an acid at a temperature below about 40° C.,
- c) optionally heating the composition to a temperature above about 70° C. and
- d) optionally removing or isolating the isocyanate from the reaction mixture.
1 more element
Dependencies are inferred from the claim text.