Abstract A pressure sensitive explosive composition is provided which is rendered insensitive to water or water vapor by means of a coating of an organofunctional silane capable of polymerization on contact with water or water vapor. Additionally, a method is provided of coating such a composition by the use of the abovementioned silane in a halocarbon solvent having a relatively low vapor pressure at ambient conditions. The composition may be a mixture of an inorganic oxidizer and fuel such as potassium chlorate, red phosphorous and ground glass or a mixture of a primary explosive such as lead azide and a secondary explosive such as RDX, either mixture being coated with a silane such as gamma ( Beta aminoethyl) aminopropyl trimethoxy silane applied from a volatile halocarbon liquid such as 1,1,2 trichloro-1,2,2 trifluoro ethane. The silane, after evaporation of the liquid, coats the composition and polymerizes on contact with water or water vapor to form a water impermeable film and this renders the composition insensitive to water deactivation.
Inventors
👤 W Seals
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-28 02:19
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
23 words
A composition as defined in claim 1 wherein said inorganic oxidizer is selected from the group consisting of potassium chlorate and potassium perchlorate.
Claim 2
Dependent Claim
65 words
A composition as defined in claim 1 wherein said organo-functional silane monomer has the general formula R(4 n) - Si - R''n wherein R is a radical selected from the group consisting of halogen, amino, alkoxy and arlyoxy, R'' is a radical selected from the group consisting of alkyl, aryl, aminoalkyl, aminoaryl, alkylamino and arylamino, and n is an integer from 1 to 3 inclusive.
Claim 3
Dependent Claim
41 words
A composition as defined in claim 3 wherein said organo-functional silane monomer is selected from the group consisting of gamma ( Beta aminoethyl) aminopropyl trimethoxy silane; gamma aminopropyl triethoxysilane, methyl triethoxysilane, phenyltrichlorosilane, n butyl trichlorosilane, dimethyl dichlorosilane and methyl phenyl dichlorosilane.
Claim 4
Dependent Claim
27 words
A composition as defined in claim 3, wherein the amount of said monomer is between about 1 percent and 5 percent by weight of said explosive composition.