Thermo-setting phenol-aldehyde resin adhesive composition, extender base therefor, and method of preparing same

Claim 1

THE METHOD OF PRODUCING AN ADHESIVE COMPOSITION COMPRISING FORMING A MIXTURE OF A COMMINUTED LIGNOCELLULOSE MATERIAL, A CEREAL FLOUR, AND AN 8% TO 20% AQUEOUS SOLUTION OF AN ALKALI METAL COMPOUND SELECTED FROM THE GROUP OF ALKALI METAL COMPOUNDS CONSISTING OF HYDROXIDES, CARBONATES, A MIXTURE OF HYDROXIDES AND CARBONATES, AND BICARBONATES, THERE BEING PRESENT AT LEAST ONE PART OF CEREAL FLOUR FOR EACH EIGHT PARTS BY WEIGHT OF THE LIGNO-CELLULOSE MATERIAL, COOKING THE MIXTURE BETWEEN THE TEMPERATURE LIMITS OF ABOUT 150*F. AND ABOUT 212*F. FOR A PERIOD OF TIME OF AT LEAST ABOUT 5 MINUTES TO THEREBY FORM A PRECOOKED EXTENDER BASE, AND MIXING THEREWITH A THERMOSETTING PHENOL-ALDEHYDE RESIN SOLUTION HAVING ADHESIVE PROPERTIES AND CONTAINING RESIN SOLIDS BETWEEN THE LIMITS OF ABOUT 20% AND ABOUT 55%, SAID RESIN SOLUTION BEING PRESENT IN THE ADHESIVE COMPOSITION IN AN AMOUNT TAKEN ON THE DRY WEIGHT OF THE COMBINED LIGNO-CELLULOSE MATERIAL AND CEREAL FLOUR EXTENDER COMPONENTS BETWEEN THE LIMITS OF 1 PART OF THE RESIN SOLUTION TO 6 PARTS OF SAID EXTENDER COMPONENTS, TO 8 PARTS OF THE RESIN SOLUTION TO 1 PART OF THE EXTENDER COMPONENTS, WHEREBY THERE IS PRODUCED AN ADHESIVE COMPOSITION HAVING LIQUID AND SOLID PHASES, THE SOLID PHASE OF THE ADHESIVE COMPOSITION HAVING LITTLE TENDENCY TO SEPARATE FROM THE LIQUID PHASE THEREOF, AND THE LATTER HAVING LITTLE TENDENCY TO MIGRATE FROM THE GLUE LINE OF THE MATERIAL TO WHICH THE ADHESIVE COMPOSITION IS APPLIED.

Claim 2

THE METHOD OF PRODUCING AN ADHESIVE COMPOSITION COMPRISING FORMING A MIXTURE OF A COMMINUTED LIGNOCELLULOSE MATERIAL, A CEREAL FLOUR, AND AN 8% TO 20% AQUEOUS SOLUTION OF AN ALKALI METAL COMPOUND SELECTED FROM THE GROUP OF ALKALI METAL COMPOUNDS CONSISTING OF HYDROXIDES, CARBONATES, A MIXTURE OF HYDROXIDES AND CARBONATES, AND BICARBONATES, THERE BEING PRESENT AT LEAST ONE PART OF CEREAL FLOUR FOR EACH EIGHT PARTS BY WEIGHT OF THE LIGNO-CELLULOSE MATERIAL, COOKING THE MIXTURE BETWEEN THE TEMPERATURE LIMITS OF ABOUT 150*F. AND ABOUT 212*F. FOR A PERIOD OF TIME OF AT LEAST ABOUT 5 MINUTES TO THEREBY FORM A PRECOOKED EXTENDER BASE, AND MIXING THEREWITH A THERMOSETTING PHENOL-ALDEHYDE RESIN SOLUTION HAVING ADHESIVE PROPERTIES AND CONTAINING RESIN SOLIDS BETWEEN THE LIMITS OF ABOUT 20% AND ABOUT 55%, SAID RESIN SOLUTION BEING PRESENT IN THE ADHESIVE COMPOSITION IN AN AMOUNT TAKEN ON THE DRY WEIGHT OF THE COMBINED LIGNO-CELLULOSE MATERIAL AND CEREAL FLOUR EXTENDER COMPONENTS BETWEEN THE LIMITS OF 1 PART OF THE RESIN SOLUTION TO 6 PARTS OF SAID EXTENDER COMPONENTS, TO 8 PARTS OF THE RESIN SOLUTION TO 1 PART OF THE EXTENDER COMPONENTS, WHEREBY THERE IS PRODUCED AN ADHESIVE COMPOSITION HAVING LIQUID AND SOLID PHASES, THE SOLID PHASE OF THE ADHESIVE COMPOSITION HAVING LITTLE TENDENCY TO SEPARATE FROM THE LIQUID PHASE THEREOF, AND THE LATTER HAVING LITTLE TENDENCY TO MIGRATE FROM THE GLUE LINE OF THE MATERIAL TO WHICH THE ADHESIVE COMPOSITION IS APPLIED.