초록 ▼

New compounds having one, two or three aldimine groups and one, two or three oxazolidine groups in their molecule are curing agents for organic polyisocyanates. Mixtures of said new compounds with polyisocyanates are stable for long periods if humidity is absent, if they however come into contact wi

New compounds having one, two or three aldimine groups and one, two or three oxazolidine groups in their molecule are curing agents for organic polyisocyanates. Mixtures of said new compounds with polyisocyanates are stable for long periods if humidity is absent, if they however come into contact with water or the humidity of the environment they rapidly cure resulting in elastic or hard polymers. The new compounds are prepared by reacting a diamine or polyamine with up to 6 amino groups with an epoxy compound, yielding a polyamino alcohol, which is thereafter reacted with an aldehyde, e.g. formaldehyde, an aliphatic, cyclic or heterocyclic or aromatic aldehyde.

대표청구항 ▼

A compound having one aldimine group and one oxazolidine group in its molecule, of the formula I: [Figure] (I) wherein m and n are integers and are each 1, R1 is an isopropyl radical, R2 is a hydrogen atom, an alkyl radical having 1 to 3 carbon atoms, or cresyloxymethyl radical, and A is a bivalent

A compound having one aldimine group and one oxazolidine group in its molecule, of the formula I: [Figure] (I) wherein m and n are integers and are each 1, R1 is an isopropyl radical, R2 is a hydrogen atom, an alkyl radical having 1 to 3 carbon atoms, or cresyloxymethyl radical, and A is a bivalent organic radical selected from the group consisting of －CH2－CH2－, －CH2－CH2－CH2－, －(CH2)6－, [Figure] [Figure] [Figure]