Cellulose fiber product containing latex solids and a conjointly precipitated high molecular weight phenol-aldehyde resin-reaction product, and method of producing said product

Claim 1

A CURED CELLULOSE FIBER PRODUCT OF IMPROVED DRY AND WET TENSILE STRENGTH, THE FIBERS OF SAID PRODUCT BEING BONDED WITH A MIXTURE OF COAGULATED RUBBERY LATEX SOLIDS AND A PHENOL-ALDEHYDE RESIN WHICH IS THE CONVERTED INFUSIBLE WATER-INSOLUBLE RESIN OF A HIGH CONDENSED ALKALISOLUBLE, ETHANOL-INSOLUBLE REACITON-PRODUCT OF A MONOHYDRIC PHENOL AND AN ALDEHYDE IN WHICH THE ALDEHYDE RADICAL IS THE SOLE REACTIVE RADICAL, THE MOLAR RATIO OF THE ALDEHYDE TO THE PHENOL BEING BETWEEN THE LIMITS OF 1:1 TO 3:1, SAID RESIN REACTION-PRODUCT HAVING BEEN PRECIPITATED ON SAID FIBERS WHILE CONJOINTLY COAGULATING SAID RUBBERY LATEX SOLIDS, THE HIGHLY CONDENSED REACTION PRODUCT HAVING PRIOR TO ITS CONVERSION A MOLECULAR WEIGHT BETWEEN THE LIMITS OF ABOUT 40,000 AND ABOUT 50,000.