Composite propellants with a cellulose acetate binder

• US 3,986,908 A
• Filed: 06/25/1973
• Issued: 10/19/1976
• Est. Priority Date: 07/05/1972
• Status: Expired due to Term

• Current Assignee: Societe Nationale Des Poudres Et Explosifs (Government of France)
• Original Assignee: Societe Nationale Des Poudres Et Explosifs (Government of France)
• Inventors: Picard, Jacques, Tranchant, Jean L., Grebert, Robert O.
• Primary Examiner(s): Miller, Edward A.
• Application Number:
  US05/373,118
• Time in Patent Office: 1,212 Days
• Field of Search: 149/19.2, 149/2, 149/19.7, 149/83, 149/44, 149/113, 149/20
• US Class Current: 149/19.7
• CPC Class Codes: C06B 23/00 Compositions characterised by non-explosive or non-thermic constituents in combination with specific explosives C06B25/20, C06B25/26, C06B29/04, C06B29/08, C06B31/06, C06B31/40, C06B33/02
• CPC Class Codes: C06B 45/10 the organic component containing a resin

Abstract

A composite propellant comprises, by weight:

A. from 78 to 92% of an oxidizing agent which is at least one of alkali metal, alkaline earth metal and ammonium chlorates and perchlorates,

B. from 7.9 to 17.2% of an organic binder which contains oxygen but not nitrogen, and

C. from 0.1 to 0.8% of a carbon-containing combustion regulator.

This composite propellant is useful as a gas generator for inflatable cushion protection devices because the gaseous combustion products are substantially free from toxic gases.

Claims

1. A composite propellant, which consists essentially of, by weight:

a. about 80 to about 92 parts of potassium perchlorate,

b. about 8.5 to about 17 parts of cellulose triacetate,

c. about 0.15 to about 0.5 parts of acetylene black,

d. about 0.5 to about 2 parts of aluminium powder, and

e. about 1 to about 3 parts of a plasticiser, the ingredients being in such amounts that said propellant produces combustion gases free of nitrogen oxides and containing less than 0.05% of carbon monoxide.

2. A composite propellant as set forth in claim 1, which consists essentially of, by weight:

a. about 88 parts of potassium perchlorate with a particle size of about 16 microns,

b. about 10 parts of cellulose triacetate,

c. about 0.2 parts of acetylene black,

d. about 1 part of aluminium powder, and

e. about 2.5 parts of triacetin.