Paper making 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 AN ALKALI GUM, FROM 5 TO 10 PARTS BY WEIGHT OF AN ALKALI METAL BORATE AND FROM 2 TO 6 PARTS BY WEIGHT OF AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF GLYOXAL AND PYRUVIC ALDEHYDE, THE AMOUNT OF COOKED MIXTURE OF GUM, BORATE AND ALDEHYDE IN THE SOLUTION BEING AN APPRECIABLE AMOUNT UP TO ABOUT 1.5 PARTS PER 100 PARTS OF FIBROUS MATERIALS IN THE AQUEOUS SUSPENSION, BOTH PARTS BEING BASED ON THE DRY WEIGHT THEREOF.