Procedure for the production of foam materials resistant to compression, very stable to heat, base mixtures of bituminous mass and phenolic resins. (Machine-translation by Google Translate, not legally binding)

摘要

Process for the production of foams resistant to compression, very stable against heat, based on mixtures of bituminous masses and phenolic resins, prepared by reacting mixtures of bituminous masses, phenols and aldehydes or substances that release aldehyde in the presence of catalysts, characterized in that mixtures of bituminous masses, phenols and hexamethylenetetramine in the presence of an alkaline catalyst are subjected to a condensation reaction at 140 to 200ºC for about 4 hours, and the mixtures obtained from bituminous masses and resins are foamed and fully hardened. Of phenol-formaldehyde, with the addition of a blowing agent, preferably of hexamethylenetetramine, in pressure boxes. (Machine-translation by Google Translate, not legally binding)