Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for preparing methylenedianiline and methylenebis(phenyl isocyanate)

Process for preparing methylenedianiline and methylenebis(phenyl isocyanate)

US Patent 6831192 · Granted Dec 14, 2004

Estimated economic value: $516,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Monitoring of the stoichiometric ratio in the reaction of nitroaromatics with hy2014
Process for preparing aromatic isocyanates2014
Process for the production of isocyanates, preferably diisocyanates and polyisoc2014
Process for preparing toluenediamine by hydrogenation of dinitrotoluene2013
Method of measuring entry of water into phosgene-conducting plants2013
Process for distillatively removing dinitrotoluene from process wastewater from 2011
Method for the continuous production of isocyanates2010
Method for separating trioxane from a trioxane/formaldehyde/water mixture by mea2010
Method for producing aromatic amines or aliphatic amino alcohols2009
Separation of a substance mixture consisting of hydrogen chloride and phosgene2009
Separation of a substance mixture consisting of hydrogen chloride and phosgene2009
Reaction column in a special combination with a natural circulation evaporator2009