| 摘要 |
The present invention deals with a novel process directed to the preparation of a novel aromatic di-isoimide chemical compound that has utility as a catalyst and as a curing agent in epoxy compositions. The di-isoimide serves effectively as a thermally activated latent catalyst in epoxy curing, thereby increasing shelf life, and avoids premature cross-linking. The process involves the reaction in a non-aqueous dipolar solvent of a dispersion PMDA and a substituted or unsubstituted diamino-triazine, preferably melamine. Reaction in the presence of rubber is also disclosed.
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