Back to results
US 2013/0211142 A1Published application
Halogenated diethyltoluenediamines
AssigneeLonza Ltd.
InventorsStefan Ellinger, Gaetano Ladelfa, Constanze Mueller
Life of this patent
Estimating the term…
Abstract
Disclosed are halogenated diethyltoluenediamines of formula wherein either R1 is an amino group and R2 is chlorine or bromine, or R2 is an amino group and R1 is chlorine or bromine, and isomeric mixtures thereof. The halogenated diethyltoluenediamines of formula I are useful as chain extenders for polyurethanes and hardeners for epoxy resins having a relatively long gel time.
Claims16
A halogenated diethyltoluenediamine of formula
- wherein either R1 is an amino group and R2 is chlorine or bromine or R2 is an amino group and R1 is chlorine or bromine,
- and/or an isomeric mixture thereof.
A brominated diacetyl compound of formula
- wherein either R1′″ is an acetylamino group and R2′″ is bromine or R2′″ is an acetylamino group and R1′″ is bromine,
- and/or an isomeric mixture thereof.
Dependencies are inferred from the claim text.