Cartridge cases from fibrous nitrocellulose and alkaline catalyzed phenolic resin

• US 3,260,203 A
• Filed: 02/18/1965
• Issued: 07/12/1966
• Est. Priority Date: 02/18/1965
• Status: Expired due to Term

• Current Assignee: John N. Godfrey, Myron G De Fries
• Original Assignee: John N. Godfrey, Myron G De Fries
• Inventors: Godfrey, John N., DE FRIES MYRON G
• Application Number:
  US04/433,849
• Time in Patent Office: 509 Days
• US Class Current: 102/465
• CPC Class Codes: C06B 25/18 the compound being nitrocellulose present as 10% or more by weight of the total composition
• CPC Class Codes: C06B 45/12 having contiguous layers or zones
• CPC Class Codes: C08K 7/02 Fibres or whiskers
• CPC Class Codes: C08L 61/06 of aldehydes with phenols
• CPC Class Codes: F42B 5/188 Manufacturing processes therefor
• CPC Class Codes: F42B 5/192 Cartridge cases characterised by the material of the casing wall cartridge bags F42B5/38
• CPC Class Codes: Y10S 102/70 Combustilbe cartridge

Claims

10. A PROCESS FOR PREPARING RIGID, SHAPED, FELTED, FIBROUS COMBUSTIBLE PRODUCT HAVING HIGH TENSILE STRENGTH COMPRISING THE STEPS OF 8A) TREATING A HOMOGENEOUS AQUEOUS MIXTURE CONSISTING ESSENTIALLY OF AN AQUEOUS SUSPENSION OF 1 TO ABOUT 5 PARTS OF NITROCELLULOSE AND ABOUT 1 TO 2 PARTS OF CELLULOSE FIBERS, AND 1 PART OF RESIN BINDER CONSISTING ESSENTIALLY OF AN ALKALINE REACTION PRODUCT OF PHENOL AND FORMALDEHYDE CONTROLLED TO YIELD A RESIN WITH A VISCOSITY IN THE RANGE FROM ABOUT 200 TO 400 CPS. AND ABOUT 250-400% WATER TOLERANCE AT ABOUT 5060% SOLIDS CONTENT, WITH AN AMOUNT OF HALOGEN SALT OF A TRIVALENT METAL SUFFICIENT TO PRECIPITATE SAID RESIN BINDER, (B) REMOVING EXCESS WATER FFROM SAID MIXTURE TO DEPOSIT A FIBROUS MASS, (C) SHAPING SAID MASS, AND (D) HEATING SAID MASS AT 120-180*F. UNTIL DRY.

11. THE METHOD OF MAKING A RIGID COMBUSTIBLE PRODUCT COMPRISING HOMOGENEOUSLY MIXING NITROCELLULOSE FIBERS, CELLULOSE FIBERS, WATER DISPERSED PHENOL-FORMALDEHYDE RESIN, PRECIPITANT FOR SAID RESIN, AND WATER;

REMOVING A MAJOR AMOUNT OF THE WATER TO LEAVE A WET FIBROUS MASS;

MOLDING SAID MASS;

AND HEATING SAID MASS TO A TEMPERATURE IN THE RANGE OF ABOUT 120-180*F. UNTIL DRY.