METHOD OF TECHNICAL FOAM PRODUCING Russian patent published in 1999 - IPC

FIELD: building industry. SUBSTANCE: invention relates to a method of technical foam producing, in part, for porous building materials. Method involves preparing a foam-forming agent solution, foam beating up and addition of the preliminary defibrilled in an aqueous medium and condensed to 25-30% concentration paper-cardboard waste paper to foam at amount 3.0-4.0 wt. -%. Foam stability is 13-21 h. EFFECT: increased stability of the technical foam. 1 tbl