Flame resistant cellulose fibrous materials and method of making same

Claim 1

A METHOD OF TREATING LOOSE, RAW, CELLULOSIC FIBERS TO RENDER THE SAME FLAME AND FIRE RESISTANT WITHOUT SUBSTANTIALLY CHANGING THE FLEXIBLITY OF THE FIBERS AND WHEREIN THE FIREPROOFING COMPOSITION IS DEPOSITED ON AND IN THE FIBERS, WHICH METHOD COMPRISES SUBJECTING THE RAW FIBERS TO AN AQUEOUS SOLUTION MAINTAINED AT A TEMPERATURE BETWEEN 130* F. AND 150* F. AND AT A PH OF APPROXIMATELY BETWEEN 7 AND 8. AND COLUTION CONTAINING BORAX, BORIC ACID AND A COMPATIBLE SURFACE ACTIVE AGENT, THE BORAX BEING PRESENT IN THE PROPORTION OF THE APPROXIMATELY 1 POUND PER GALLON OF WATER, THE BORIC ACID BEING PRESENT IN AN AMOUNT OF APPROXIMATELY 1/2 POUNDS PER GALLON OF WATER AND THE SURFACE ACTIVE AGENT BEING PRESENT IN AN AMOUNT OF APPROXIMATELY 1/10 TO 1/2 PERCENT BY WEIGHT OF THE SOLUTION, HEATING THE SOLUTION, AND MAINTAINING IT AT A TEMPERATURE WITHIN THE RANGE INDICATED, LEAVING THE FIBROUS MATERIAL IN SAID SOLUTION FOR AT LEAST TWO MINUTES, REMOVING THE MATERIAL FROM SAID SOLUTION, REMOVING SOLUTION FROM SAID MATERIAL UNTIL THE AMOUNT OF SOLUTION ADHERING TO THE MATERIAL IS EQUAL TO APPROXIMATELY 30% TO 50% BY WEIGHT OF THE MATERIAL AND THEN DRYING THE MATERIAL, WHEREBY THE AMOUNT OF FLAME AND FIREPROOFING COMPOSITION DEPOSITED ON AND IN THE FIBERS IS FROM ABOUT 10% TO 15% BY WEIGHT OF THE FIBROUS MATERIAL.

Claim 2

A METHOD OF TREATING LOOSE, RAW, CELLULOSIC FIBERS TO RENDER THE SAME FLAME AND FIRE RESISTANT WITHOUT SUBSTANTIALLY CHANGING THE FLEXIBLITY OF THE FIBERS AND WHEREIN THE FIREPROOFING COMPOSITION IS DEPOSITED ON AND IN THE FIBERS, WHICH METHOD COMPRISES SUBJECTING THE RAW FIBERS TO AN AQUEOUS SOLUTION MAINTAINED AT A TEMPERATURE BETWEEN 130* F. AND 150* F. AND AT A PH OF APPROXIMATELY BETWEEN 7 AND 8. AND COLUTION CONTAINING BORAX, BORIC ACID AND A COMPATIBLE SURFACE ACTIVE AGENT, THE BORAX BEING PRESENT IN THE PROPORTION OF THE APPROXIMATELY 1 POUND PER GALLON OF WATER, THE BORIC ACID BEING PRESENT IN AN AMOUNT OF APPROXIMATELY 1/2 POUNDS PER GALLON OF WATER AND THE SURFACE ACTIVE AGENT BEING PRESENT IN AN AMOUNT OF APPROXIMATELY 1/10 TO 1/2 PERCENT BY WEIGHT OF THE SOLUTION, HEATING THE SOLUTION, AND MAINTAINING IT AT A TEMPERATURE WITHIN THE RANGE INDICATED, LEAVING THE FIBROUS MATERIAL IN SAID SOLUTION FOR AT LEAST TWO MINUTES, REMOVING THE MATERIAL FROM SAID SOLUTION, REMOVING SOLUTION FROM SAID MATERIAL UNTIL THE AMOUNT OF SOLUTION ADHERING TO THE MATERIAL IS EQUAL TO APPROXIMATELY 30% TO 50% BY WEIGHT OF THE MATERIAL AND THEN DRYING THE MATERIAL, WHEREBY THE AMOUNT OF FLAME AND FIREPROOFING COMPOSITION DEPOSITED ON AND IN THE FIBERS IS FROM ABOUT 10% TO 15% BY WEIGHT OF THE FIBROUS MATERIAL.