Patent ID: 8668986

Claim:
An aromatic, room temperature liquid dialdimine of formula (I): wherein: A is a radical of a primary aromatic diamine B after removal of two primary amino groups; the diamine B is selected from the group consisting of 1,2-, 1,3-, and 1,4-phenylenediamine, 2,4- and 2,6-tolylenediamine, 3,4-tolylenediamine, 5-isopropyl-2,4-tolylenediamine, 5-(tert-butyl)-2,4-tolylenediamine, 4,6-dialkyl-1,3-phenylenediamines with alkyl groups, methyl, ethyl, isopropyl or 1-methylpropyl groups, 4,4′-, 2,4′- and 2,2′-diaminodiphenylmethane, 3,3′-dimethyl-4,4′-diaminodiphenylmethane, 3,3′-dichloro-4,4′-diaminodiphenylmethane (MOCA), 3,3′-di-tert-butyl-4,4′-diaminodiphenylmethane, 5,5′-methylenedianthranilic acid, dimethyl 5,5′-methylenedianthranilate, 1,3-propylene bis(4-aminobenzoate), 1,4-butylene bis(4-aminobenzoate), and 1,2-bis(2-aminophenylthio)ethane; R 1 and R 2 are each independently either a monovalent hydrocarbon radical having 1 to 12 carbon atoms or together are a divalent hydrocarbon radical which has 4 to 20 carbon atoms and is part of an optionally substituted carbocyclic ring having 5 to 8 carbon atoms; R 3 is a hydrogen atom, an alkyl group, a cycloalkyl group, or an arylalkyl group; and R 4 is either a linear or branched alkyl radical having 6 to 20 carbon atoms, optionally having cyclic moieties and optionally having at least one heteroatom, or R 4 is a mono- or polyunsaturated, linear or branched hydrocarbon radical having 6 to 20 carbon atoms.