Organic compounds -- part of the class 532-570 series – Organic compounds – Isocyanate esters
Reexamination Certificate
2011-08-09
2011-08-09
Katakam, Sudhakar (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Isocyanate esters
Reexamination Certificate
active
07994361
ABSTRACT:
The invention relates to a process for preparing aromatic diisocyanates by reaction of phosgene with diamines in the gas phase, in which the reaction is carried out in a reaction zone at moderate pressures, i.e. the pressure in this reaction zone is more than 3 bar and less than 20 bar.
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Knoesche Carsten
Mueller Christian
Pfeffinger Joachim
Stroefer Eckhard
Weber Markus
BASF - Aktiengesellschaft
Katakam Sudhakar
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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