US1550960A - Method for preparing propellant powder - Google Patents

Method for preparing propellant powder Download PDF

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Publication number
US1550960A
US1550960A US673128A US67312823A US1550960A US 1550960 A US1550960 A US 1550960A US 673128 A US673128 A US 673128A US 67312823 A US67312823 A US 67312823A US 1550960 A US1550960 A US 1550960A
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Prior art keywords
nitrocellulose
nitroguanidine
propellant powder
powder
preparing
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US673128A
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George C Hale
Olsen Fredrich
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    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00—Compositions containing a nitrated organic compound
    • C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00—Compositions containing a nitrated organic compound
    • C06B25/18—Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition

Definitions

  • the present invention relates to a method for preparing propellant powder.
  • the primary object of our invention is the establishment of a method for incorporating nitroguanidine into nitrocellulose powders.
  • Nitroguanidine has manyproperties which indicate its suitability for use as a propellant. For example, it is very stable. is nonhygrosco ic, is easily ignited and burns quietly without leaving any a preciable residue. It is, however, a crysta line compound which cannot be colloided by any known solvent to produce a propellant powder similar to colloided nitrocellulose. It is soluble, however, in certain organic compounds which serve as colloiding agents for nitrocellulose.
  • solvents paratolylmethylketone, benzaldehyde. diacetin, and urethane. are the only solvents intended to be included in such term.
  • a method of incorporating nitroguanidine into a nitrocellulose powder which includes treating nitroguanidine with a solvent which serves both as a solvent for the nitroguanidine and as a colloiding agent for the nitrocellulose.
  • a method of incorporating nitroguanidine into a nitrocellulose powder which includes dissolving the nitroguanidine in a. solvent. and then colloiding nitrocellulose with the solution.
  • a method of incorporating nitroguanidine into a nitrocellulose powder which includes treating a mixture of nitroguanidine and nitrocellulose with a solvent for the nitroguanidine which acts as a oolloiding agent for the nitrocellulose.

Description

Patented Aug. 25, 1925.
UNITED STATES GEORGE G. HALE AND FRIEDRICH OLSEN, OF DOVER, NEW JERSEY.
METHOD FOR PREPARING PBOPELLANT POWDER.
No Drawing.
Application filed November 6, 1923. Serial No. 673,128.
(GRANTED UNDER THE ACT OF MARCH 3, 1883; 22 STAT. L. 625.)
To all whom it may concern:
Be it known that we, GEORGE C. HALE and FnEnaIoH OLSEN, citizens of the United States, and residents of Dover in the county of Morris and State of New Jersey, have invented an Improvement in Methods for Preparing Propellant Powder, of which the following is a specification.
The invention described herein may be used by the Government, or any of its officers or employees in prosecution of work for the Government, or by any other person in the United States without payment to me of any royalty thereon, in accordance with the act of March 3,1883.
The present invention relates to a method for preparing propellant powder.
The primary object of our invention is the establishment of a method for incorporating nitroguanidine into nitrocellulose powders.
With the foregoing and other objects in view, our invention resides in the novel combination of ingredients and in the details of preparation hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.
Nitroguanidine has manyproperties which indicate its suitability for use as a propellant. For example, it is very stable. is nonhygrosco ic, is easily ignited and burns quietly without leaving any a preciable residue. It is, however, a crysta line compound which cannot be colloided by any known solvent to produce a propellant powder similar to colloided nitrocellulose. It is soluble, however, in certain organic compounds which serve as colloiding agents for nitrocellulose.
It is the purpose of our invention to use certain materials which serve. as solvents for nitroguanidine and which at the same time may be employed as colloiding agents for nitrocellulose as a means for carrying nitroguanidine into a nitrocellulose colloid. Experiments have been conducted with a number of organic materials which serve as solvents for nitroguanidine and which also serve as colloiding agents for nitrocellulose. Thus, for example, it has been found that paratolylmethylketone, benzaldehyde, diacetin, and urethane, may be employed to pro-' duce, when nitroguanidine is mixed with nitrocellulose, a propellant which will have properties similar to colloided nitrocellulose. Such mixtures have been found to give exccllent results ballistically and at the same time the mixture of the nonhygroscopic nitroguanidine with the ordinary hygroscopic nitrocellulose will almost entirely obviate any danger of deterioration of the propellant thus prepared due to moisture and dampness.
It is the object of our invention, then, to carry nitroguanidine into a nitrocellulose colloid by employing certain materials which serve both as solvents for the nitrocellulose.
Wherever the word solvent is used throughout the specification or in, the an pended claims, the solvents paratolylmethylketone, benzaldehyde. diacetin, and urethane. are the only solvents intended to be included in such term.
We claim:
1. A method of incorporating nitroguanidine into a nitrocellulose powder which includes treating nitroguanidine with a solvent which serves both as a solvent for the nitroguanidine and as a colloiding agent for the nitrocellulose.
2. A method of incorporating nitroguanidine into a nitrocellulose powder which includes dissolving the nitroguanidine in a. solvent. and then colloiding nitrocellulose with the solution.
3. A method of incorporating nitroguanidine into a nitrocellulose powder which includes treating a mixture of nitroguanidine and nitrocellulose with a solvent for the nitroguanidine which acts as a oolloiding agent for the nitrocellulose.
GEORGE C. HALE. FRIEDRICH OLSEN.
US673128A 1923-11-06 1923-11-06 Method for preparing propellant powder Expired - Lifetime US1550960A (en)

Priority Applications (1)

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