US 5,204,307 A · Process for alkylation of aromatic diamines

Abstract

Production of alkyl substituted aromatic diamines by reacting triethlyaluminum with an aromatic diamine and a chloride ion source in the presence of an olefin is disclosed. The alkyl substituted aromatic diamines are useful as chain extenders in polyurethane processes.

Claims2

Dependent claims

A catalyst formed by reacting triethylaluminum with an aromatic diamine and a chloride ion source in a molar ratio of triethylaluminum to chloride ion source from about 1.0:0.9 to about 0.9:0.01.

Dependencies are inferred from the claim text.

Facts

Application

07/820,191Filed 13 Jan 1992 · division

Priority

23 Oct 1990

Granted

20 Apr 1993

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

C07C 209/68
Preparation of compounds containing amino groups bound to a carbon skeleton: from amines, by reactions not involving amino groups, e.g. reduction…
B01J 31/143
Of aluminium or boron: of aluminium
B01J 2231/4205
Catalytic cross-coupling, i.e. connection of previously not connected C-atoms or C- and X-atoms without rearrangement: c-C cross-coupling, e.g.…
C07C
Acyclic or carbocyclic compounds

Process for alkylation of aromatic diamines

Life of this patent

Abstract

Claims2

Process for alkylation of aromatic diamines

Life of this patent

Abstract

Claims2