Foams based on low formaldehyde-emission urea-formaldehyde resin and process for their preparation

摘要

Composition based on a urea-formaldehyde polycondensate, suitable for the preparation of solid foams to be used as thermal insulating materials, characterized in that said composition contains hexamethylenetetramine in quantities comprised between 2% and 15% by weight with respect to the content of dry product of the composition.