Method of completely resolving lignified cellulose

Claim 1

THE METHOD OF COMPLETELY RESOLVING A CELLULOSELIGNIN COMPLEX WHICH COMPRISES: DIGESTING SAID COMPLEX WITH A SOLUTION OF CAUSTIC SODA AND SODIUM SULPHITE; IN CONVENTIONAL AMOUNTS AND RATIOS, UNTIL THE CONTAINED FIBER SHALL HAVE BEEN LIBERATED; SEPARATING SAID FIBER FROM THE SPENT LIQUOR AND RE-CYCLING APPROXIMATELY ONE-HALF THEREOF TO MAKE FRESH COOKING LIQUOR; ADDING CAUSTIC SODA TO THE REMAINDER UNTIL THE CAUSTIC CONTENT SHALL BE APPROXIMATELY THREE TIMES AS GREAT BY WEIGHT AS THE ORGANIC CONTENT; DIGESTING SAID MIXTURE AT A TEMPERATURE OF BETWEEN 100* AND 150*C. UNTIL APPROXIMATELY ONE-THIRD OF THE TOTAL RESIDENT METHOXYL SHALL APPEAR, IN CONVENTIONAL ANALYTIC PROCEDURE, TO BE COMBINED IN AROMATIC FORM; RE-CYCLING SUFFICIENT OF DIGESTED MATERIAL TO SUPPLY THE CAUSTIC REQUIREMENTS OF THE INITIAL DIGESTION ; CARBONATING THE REMAINDER AND SEPARATING THE BICARBONATE OF SODA FORMED; EVAPORATING AND CRYSTALLIZING THE RESULTANT SOLUTION TO OBTAIN ACETATE, FORMATE SULPHITE AND CARBONATE OF SODA; SEPARATING SAID CRYSALS; COMMINGLING AND SEPARATING THE MOTHER LIQUOR FROM SAID CRYSTALLIZATION WITH A SOLVENT SUITABLE FOR THE EXTRACTION OF THE RESIDENT AROMATICS; COMMINGLING A PART OF SAID EXTRACTED LIQUOR WITH PREVIOUSLY OBTAINED BICARBONATE AND LIME TO PRODUCE CAUSTIC SODA AND RE-CYCLING SAID CAUSTIC SODA TO WHEREVER CAUSTIC SODA IS CALLED FOR AND IN SUCH AMOUNTS AS CALLED FOR IN PREVIOUSLY SPECIFIED STEPS; COMMINGLING THE REMAINDER OF THE EXTRACTED LIQUOR WITH CAUSTIC SODA IN SUCH AMOUNT THAT IT SHALL APPROXIMATE THREE TIMES THE WEIGHT OF THE RESIDUAL ORGANICS RESIDENT THEREIN AND DIGESTING THE MIXTURE AT APPROXIMATELY 200*C., UNTIL SUBSTANTIALLY ALL THE ACETYL GROUPS RESIDENT THEREIN SHALL BE PRESENT AS SODIUM ACETATE; COMMINGLING THE RESULTANT MASS WITH SUFFICIENT WATER TO DISSOLVE THE RESIDENT SODA SALTS BUT LEAVING SODIUM OXALATE IN SUBSTANTIALLY UNDISSOLVED FORM; SEPARATING SAID OXALATE; CRYSTALLIZING THE RESULTANT SOLUTION FOR THE RESIDENT SODIUM ACETATE AND FORMATE; REMOVING SAID CRYSTALS; CARBONATING THE RESIDUAL SOLUTION AND SEPARATING THE BICARBONATE FORMED; EXTRACTING THE RESIDENT AROMATICS IN THE RESIDUAL SOLUTION WITH A SUITABLE SOLVENT FOR SAME, AND RE-CYCLING THE EXTRACTED SOLUTION TO UNDERGO ONCE MORE THE CAUSTIC DIGESTIONS PRESCRIBED HEREIN.

Claim 2

THE METHOD OF COMPLETELY RESOLVING A CELLULOSELIGNIN COMPLEX WHICH COMPRISES: DIGESTING SAID COMPLEX WITH A SOLUTION OF CAUSTIC SODA AND SODIUM SULPHITE; IN CONVENTIONAL AMOUNTS AND RATIOS, UNTIL THE CONTAINED FIBER SHALL HAVE BEEN LIBERATED; SEPARATING SAID FIBER FROM THE SPENT LIQUOR AND RE-CYCLING APPROXIMATELY ONE-HALF THEREOF TO MAKE FRESH COOKING LIQUOR; ADDING CAUSTIC SODA TO THE REMAINDER UNTIL THE CAUSTIC CONTENT SHALL BE APPROXIMATELY THREE TIMES AS GREAT BY WEIGHT AS THE ORGANIC CONTENT; DIGESTING SAID MIXTURE AT A TEMPERATURE OF BETWEEN 100* AND 150*C. UNTIL APPROXIMATELY ONE-THIRD OF THE TOTAL RESIDENT METHOXYL SHALL APPEAR, IN CONVENTIONAL ANALYTIC PROCEDURE, TO BE COMBINED IN AROMATIC FORM; RE-CYCLING SUFFICIENT OF DIGESTED MATERIAL TO SUPPLY THE CAUSTIC REQUIREMENTS OF THE INITIAL DIGESTION ; CARBONATING THE REMAINDER AND SEPARATING THE BICARBONATE OF SODA FORMED; EVAPORATING AND CRYSTALLIZING THE RESULTANT SOLUTION TO OBTAIN ACETATE, FORMATE SULPHITE AND CARBONATE OF SODA; SEPARATING SAID CRYSALS; COMMINGLING AND SEPARATING THE MOTHER LIQUOR FROM SAID CRYSTALLIZATION WITH A SOLVENT SUITABLE FOR THE EXTRACTION OF THE RESIDENT AROMATICS; COMMINGLING A PART OF SAID EXTRACTED LIQUOR WITH PREVIOUSLY OBTAINED BICARBONATE AND LIME TO PRODUCE CAUSTIC SODA AND RE-CYCLING SAID CAUSTIC SODA TO WHEREVER CAUSTIC SODA IS CALLED FOR AND IN SUCH AMOUNTS AS CALLED FOR IN PREVIOUSLY SPECIFIED STEPS; COMMINGLING THE REMAINDER OF THE EXTRACTED LIQUOR WITH CAUSTIC SODA IN SUCH AMOUNT THAT IT SHALL APPROXIMATE THREE TIMES THE WEIGHT OF THE RESIDUAL ORGANICS RESIDENT THEREIN AND DIGESTING THE MIXTURE AT APPROXIMATELY 200*C., UNTIL SUBSTANTIALLY ALL THE ACETYL GROUPS RESIDENT THEREIN SHALL BE PRESENT AS SODIUM ACETATE; COMMINGLING THE RESULTANT MASS WITH SUFFICIENT WATER TO DISSOLVE THE RESIDENT SODA SALTS BUT LEAVING SODIUM OXALATE IN SUBSTANTIALLY UNDISSOLVED FORM; SEPARATING SAID OXALATE; CRYSTALLIZING THE RESULTANT SOLUTION FOR THE RESIDENT SODIUM ACETATE AND FORMATE; REMOVING SAID CRYSTALS; CARBONATING THE RESIDUAL SOLUTION AND SEPARATING THE BICARBONATE FORMED; EXTRACTING THE RESIDENT AROMATICS IN THE RESIDUAL SOLUTION WITH A SUITABLE SOLVENT FOR SAME, AND RE-CYCLING THE EXTRACTED SOLUTION TO UNDERGO ONCE MORE THE CAUSTIC DIGESTIONS PRESCRIBED HEREIN.