| 摘要 |
<p>Polyepoxide-polyamine gas barrier coatings for use on packaging materials such as polymeric containers are provided with more stable low permeability at high humidity conditions by including high aromatic content in systems cured with a substantial excess of polyamine. The polyamine is an adduct of a polyamine having high aromatic content reacted with epichlorohydrin, certain polyepoxides, novolac epoxy resin, bisphenof F epoxy resin, or formaldehyde/phenol Mannich bases. The polyamine adduct is cured with polyepoxide which also may have aromatic content, with the exclusion of bisphenol A epoxy resins.</p> |
