Process for making a fibrous cellulose and/or nitrocellulose product
First Claim
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1. IN A PROCESS FOR MAKING, A FELTED, FIBROUS PRODUCT COMPRISING FIBERS SELECTED FROM THE GROUP CONSISTING OF CELLULOSE, NITROCELLULOSE, AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING IMPREGNATING SAID FIBERS WITH AN AQUEOUS OIL-IN-WATER TYPE EMULSION COMPRISING A SOLUTION OF POLYVINYL FORMAL IN A VOLATILE ORGANIC SOLVENT HAVING A MAXIMUM SOLUBILITY IN WATER OF ABOUT 15% BY WEIGHT AT 20*C., DISPERSED IN WATER, SAID POLYVINYL FORMAL COMPRISING ABOUT 2% TO 50% BY WEIGHT OF SAID FIBERS, AND THEN DRYING SAID IMPREGNATED MIXTURE OF FIBERS.
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1 Claim
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1. IN A PROCESS FOR MAKING, A FELTED, FIBROUS PRODUCT COMPRISING FIBERS SELECTED FROM THE GROUP CONSISTING OF CELLULOSE, NITROCELLULOSE, AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING IMPREGNATING SAID FIBERS WITH AN AQUEOUS OIL-IN-WATER TYPE EMULSION COMPRISING A SOLUTION OF POLYVINYL FORMAL IN A VOLATILE ORGANIC SOLVENT HAVING A MAXIMUM SOLUBILITY IN WATER OF ABOUT 15% BY WEIGHT AT 20*C., DISPERSED IN WATER, SAID POLYVINYL FORMAL COMPRISING ABOUT 2% TO 50% BY WEIGHT OF SAID FIBERS, AND THEN DRYING SAID IMPREGNATED MIXTURE OF FIBERS.
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Current AssigneeJohn N. Godfrey, Myron G De Fries
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Original AssigneeJohn N. Godfrey, Myron G De Fries
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InventorsDE FRIES MYRON G, Godfrey, John N.
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Application NumberUS04/167,976Time in Patent Office890 DaysField of SearchUS Class Current427/393.4CPC Class CodesD21H 17/36 Polyalkenyalcohols; Polyalk...Y10S 102/70 Combustilbe cartridge
