Cellular phenol aldehyde plastic resins

Claim 1

THE CELLULAR PLASTIC MATERIAL WHICH IS THE PRODUCT OF REACTION OF A FOAMING FLOWABLE COMPOSITION COMPRISING ON A PERCENTAGE BY WEIGHT BASIS FROM ABOUT 60 TO ABOUT 90% OF AN ACID CATALYZABLE WATER MISCIBLE PHENOLALDEHYDE RESOL, FROM ABOUT 0.2 TO ABOUT 10% OF A WATER INSOLUBLE GASSING AGENT THAT LIBERATES GAS WHEN REACTED WITH AN ACID SELECTED FROM THE GROUP OF METALLIC POWDERS CONSISTING OF ALUMINUM POWDER, ZINC POWDER, IRON POWDER AND MAGNESIUM POWDER, AND A CATALYST COMPRISING FROM 10 TO 18% OF AN ORGANO PHOSPHORIC ACID SELECTED FROM THE GROUP CONSISTING OF -GLYCERO PHOSPHORIC ACID, DI-METHYL-ACID-PYROPHOSPHATE, MONO-OCTYL-ACIDPYROPHOSPHATE, DI-METHYL-TRI-POLYPHOSPHORIC ACID, MONOOCTYL-HEMI-PHOSPHORIC ACID, MONO-ETHYL-DI-META-PHOSPHORIC ACID; A MINERAL ACID IN THE PROPORTION OF FROM 10 TO 90% AND FROM 90 TO 10% OF THE ORGANO PHOSPHORIC ACID, FROM 5 TO 60% WATER, AND FROM 5 TO 50% BY WEIGHT OF THE CATALYST OF A POLYHDRIC ALCOHOL THE CATALYST BEING IN THE PROPORTION RANGE OF FROM 35% OF THE CATALYST TO 65% OF THE RESIN TO 10% OF THE CATALYST TO 90% OF THE RESIN.