Papermaking process utilizing modified locust bean gum

Claim 1

IN A PROCESS OF MAKING PAPER FROM AN AQUEOUS SUSPENSION OF FIBROUS MATERIAL, THE STEP WHICH COMPRISES ADDING, TO SAID SUSPENSION, AFTER ALL OPERATIONS DESIGNED TO SUBSTANTIALLY MODIFY THE FIBROUS CONSTITUENTS BY MECHANICAL MEANS ARE COMPLETED AND PRIOR TO THE FORMATION OF THE WEB, AN AQUEOUS SOLUTION OF A COOKED MIXTURE CONTAINING FROM 85 TO 90 PARTS BY WEIGHT OF LOCUST BEAN FUM, FROM 5 TO 10 PARTS BY WEIGHT OF A SODIUM BORATE AND FROM 2 TO 6 PARTS BY WEIGHT OF CITRIC ACID, THE AMOUNT OF COOKED MIXTURE OF GUM, BORATE AND ACID IN THE SOLUTION RANGING FROM AN APPRECIABLE AMOUNT UP TO ABOUT 30 LBS. PER TON OF FIBROUS MATERIAL IN THE AQUEOUS SUSPENSION, BOTH BASED ON THE DRY WEIGHT THEREOF.