Classifications

• • 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
  • C06B25/36—Compositions containing a nitrated organic compound the compound being a nitroparaffin

Definitions

• This invention relates to explosive compositions.
• this invention relates to explosive compositions containing nitroparatfins sensitized by organic amines.
• the explosive compositions of this invention find particularly valuable application in quarrying where a powerful explosive having a high rate of detonation is required.
• the superior properties of our explosive compositions make them useful in mining, :for military purposes, in oil 'well production and in other applications where the use of explosives is necessary.
• An object of this invention is to overcome the above" mentioned disadvantages of the prior Further ob I jeots and advantages become apparent hereinafter.
• the .explosive compositions of this invention can be prepared by mixing, at'the site where the explosive is to be used, a sensitizer or mixture of sensitizers, such as 'lower alky-limine, arylalkyleneamine, monoethanolamine,
• alkylphosphorousamide aryldiamine, aminopyridine, N,
• a Chestnut Booster is an electrical blasting cap which has two pieces of detonating fuse two or three inches long, such as Primacond, manufactured -by Ensign- Brickford, taped to its sides. The ends of the detonating 'fuse which project over the end of the blasting cap are cut at about a angle .to the longitudinal axis of the fuse. The cut faces are then taped together. When detohated, the point of juncture between the two fuses produces a very sharp shock. The use of this type of booster is sometimes necessary where the charge of sensitized nitroparaflin is not tightly restricted.
• nitroparafiins used in this invention will preferably have a slight negative oxygen balance. For this reason when mixtures of nitroparaifins are used it is necessary to select and proportion the nitroparaffins which make up the mixture so that the mixture will have a slightly negative oxygen balance.
• Our preferred nitroparaffin is mononitromethane because it has an oxygen balance which renders it relatively safe to handle when unsensitized, it has a low freezing point, it can be stored safely and when sensitized can be detonated with a standard blasting cap.
• the sensitizers of this invention can be employed in concentrations from about 0.5% to about 20% by weight plosion.
• the.sensitizer is present in the amount of about 2% to about by weight of the solution of sensitizer and nitroparaiiin, since large amounts tend to dilute and reduce the explosive power of the nitroparafiin.
• the sensitizer andnitroparafiin are stored,
• Various fillers can be included in the sensitized nitroparaflin before or after it is sensitized.
• Such fillers include sawdust, powdered coal or carbon, starch, etc. Fillers are well-known in the art.
• sensitized nitroparaflin explosives are particularly well suited for use in cold weather operations and where thematerials must be stored in unheated areas. If accidentally frozen, the sensitized nitroparaffins can be thawed out with very little danger of an untimely ex- While' it is preferable not to overheat either the sensitized nitroparafiins or the separate sensitizer and nitroparafiins, it is possible to store either sensitized 'or unsensitized materials at temperatures up to about 120 F. for an indefinite period of time without detrimental effect. II Detonation of sensitized nitroparaflins can be accom- V plished by any booster means, such as electric blasting caps or 'a Chestnut Booster.
• Booster means are well known in the art. Multiple boosters can be used, if
• a small charge of some other explosive such as dynamite, can be used as a booster.
• I Sensitized nitroparafiins can be contained in place at the site of use by conventional metal, plastic, wood, pa-
• the liquid sensitized nitroparafiin can be poured directly, into the hole without the use of any other container.
• the sensitized nitroparaflins can be packaged in receptacles which serve as storagecontainers and also serve to contain the charge in place at the site of use.
• sensitizer which will not be leached out or in some manner inactivated by the aqueous conditions sometimes present in oil wells.
• sensitizer is present in an amount from about 2% to ,are to some extent water soluble, benzylamine, 2,4-
• toluenediamine and 2,6-diaminopyridine sensitizers are not leached out of sensitized nitroparaffins or inactivated Nitroparaffins sensitized with these sensitizers can be poured through water and still be detonated.
• An explosive composition comprising sensitizer in an amount from about 0.5 to about 20% by weight, saidsensitizer being selected from the group consisting of lower alkyleneimine, arylalkyleneamine, monoethanolamine, alkylphospho'rousamide, aryldiamine, aminopyrisensitizer is a mixture of compounds selected from said group.
• An explosive composition comprising ethylene imine in an amount from about 0.5% to about 20% by weight and nitroparafiin.
• An explosive composition comprising hydrazine in an amount from about 0.5% to about 20% by weight and nitroparaffin.
• An explosive composition comprising monoethanolamine in an amount from about 0.5 to about 20% by weight and nitroparafiin.
• An explosive composition comprising hexamethyl phosphorous triamine in an amount from about 0.5% to about 20% by weight and nitroparaflin.
• An explosive composition comprising N,N-dimethyl hydrazine in an amount from about 0.5 to about 20% by weight and nitroparaflin.
• An explosive composition comprising sensitizer in an amount from about 0.5% to about 20% by weight,
• said sensitizer being selected from the group consisting of lower alkyleneimine, arylalkyleneamine, monoethanolamine, alkylphosphorousamide, aryldiamine, aminopyridine, hydrazine, lower alkyl hydrazine and alkyldiamino benzene; nitroparafiin and inert filler.
• An explosive composition comprising, by weight, 20% to 0.5% of benzylamine, and to 99.5% nitromethane.
• An explosive composition comprising, by weight, 20% to 0.5% 2,4-'toluene diamine, and 80% to 99.5% nitromethane.
• An explosive composition comprising, by weight, 20% to 0.5 2,6-diami'no pyridine, and 80% to 99.5 nitromethane.
• An explosive composition comprising nitromethane and a monoarylalkyleneamine sensitizer in anamount from about 0.5% to about 20% by weight.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

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Cited By (6)

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Citations (3)

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• 1961
  • 1961-05-16 US US110332A patent/US3132060A/en not_active Expired - Lifetime
• 1962
  • 1962-04-30 GB GB16741/62D patent/GB999066A/en not_active Expired
  • 1962-05-12 DE DE1962A0040203 patent/DE1167238C2/de not_active Expired

Patent Citations (3)

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