LATENT CURING AGENT AND EPOXY COMPOSITIONS CONTAINING THE SAME

摘要

A latent curing agent obtained by the reaction of a coumarin compound of the general formula (1),;;where X and Y can be independently H, an alkyl group, a heteroalkyl group, an aromatic group, a heteroaromatic group or an acetyl group and Z can be H, OH, an alkyl group, a heteroalkyl group, an aromatic group, a heteroaromatic group with an amine of the general formula (2),;where “a” is 1 or 2,A can be an alkylene group, a heteroalkylene group, an aromatic group, a heteroaromatic group,and B can be an alkyl group (if a=1), an alkylene group (if a=2), a heteroalkyl group (if a=1), a heteroalkylene group (if a=2), an aromatic group, a heteroaromatic group, a hydroxyl group (if a=1), a secondary amino group (if a=2), O or S (if a=2), whereby B has the valency “a”, or where B alone or where A and B together form a ring system selected from an aliphatic ring system, a heteroaliphatic ring system, or an aromatic ring system, can be used for curable compositions with a polyepoxide which has at least 2 1,2-epoxide groups per molecule.

主权项

1. A latent curing agent obtained by the reaction of a coumarin compound of the general formula (1)wherein X and Y can be independently H, an alkyl group, a heteroalkyl group, an aromatic group, a heteroaromatic group or an acetyl group, and Z can be H, OH, an alkyl group, a heteroalkyl group, an aromatic group, a heteroaromatic group, with an amine of the general formula (2)wherein “a” is 1 or 2,
A can be an alkylene group, a heteroalkylene group, an aromatic group, a heteroaromatic group, and B can be an alkyl group (if a=1), an alkylene group (if a=2), a heteroalkyl group (if a=1), a heteroalkylene group (if a=2), an aromatic group, a heteroaromatic group, a hydroxyl group (if a=1), a secondary amino group (if a=2), O or S (if a=2), B has a valence “a”,or B alone or A and B together form a ring system selected from an aliphatic ring system, a heteroaliphatic ring system, or an aromatic ring system, wherein the amine is an alkyl amine or an aryl amine; and
at least one reactive epoxy resin.