RESINAS CONTENDO MELAMINA MODIFICADAS COM UM PRE-POLIMERO CICLICO DE UREIA-FORMALDEIDO E A RESPECTIVA UTILIZACAO COMO LIGANTES PARA COMPOSITOS A BASE DE CELULOSE

摘要

A melamine-containing resin modified with a cyclic urea prepolymer comprising urea, formaldehyde and ammonia or a primary amine. The prepolymer-modified melamine-containing resin provides useful binders alone, or when combined or coreacted with other resins. Products prepared with the binder include wood composites such as particleboard and medium density fiberboard.