US868636A - Nitro-starch explosive. - Google Patents
Nitro-starch explosive. Download PDFInfo
- Publication number
- US868636A US868636A US34406706A US1906344067A US868636A US 868636 A US868636 A US 868636A US 34406706 A US34406706 A US 34406706A US 1906344067 A US1906344067 A US 1906344067A US 868636 A US868636 A US 868636A
- Authority
- US
- United States
- Prior art keywords
- starch
- nitro
- explosive
- added
- borax
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920002472 Starch Polymers 0.000 title description 16
- 239000008107 starch Substances 0.000 title description 16
- 239000002360 explosive Substances 0.000 title description 9
- 239000000203 mixture Substances 0.000 description 8
- 229910021538 borax Inorganic materials 0.000 description 7
- 239000004328 sodium tetraborate Substances 0.000 description 7
- 235000010339 sodium tetraborate Nutrition 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- C06B25/02—Compositions containing a nitrated organic compound the nitrated compound being starch or sugar
Definitions
- Nitro-starch is well known to he a powerful explosive, but its commercial use heretofore has been small owfng ti) instability as ordinarily made and its high exrendering it stable. I have discovered however, a treatment which is inexpensive and at the same time results in satisfactory stability of the resulting explosive base.
- Stabilization is by some eifectedby washing 'or otherwise treating the nitrated starch with reagents intended to remove the impurities. I have discovered another method, that is to say, I mix into the nitrated starch areagent not for the purpose of removing the impurities but to remain in the mass and ent decomposition due to the presence of said impurities when said incipient decomposition takes place, and
- My explosive base is accordingly a mixture of nitro-starch and borax.
- the nitro-starch may be prepared. by any of the known methods but preferably by one which will give the product as much inherent stability' as possible, before the stabilizing agent is added. I have successfully used as an acid mixture 33 to 36% nitric acid, 63 to 67 72 sulfuric; acid and 3 to 4% water, adding one weight oi the starch to four of the acid mixture. The nitrated product is washed in any suitable manner, water and weak solution 'of'ammonia accomplishing the object satisfactorily.
- boiax To nitro-starch properly prepared is added a suitable quantity of boiax. I prefer to use approximately 3% of borax, but much larger proportions may be used with the same result, and I do not limit myself to any specific proportions.
- the borax ' may be added in aqueous solution afterward driving off the water, or part may be added in aqueous solution and part in solid form or the entire amount of borai: may be added in solid form.
- An explosive consisting of'a mixture of nitro-starch and a borate the latter being added in such proportion as to stabilize the nitro-starch in substantially the manner described.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
unite with and render harmless the products of incipi- To all whom it may concem:
'sives, of which the following is a specification.
l pense when made by methods heretofore proposed for I have discovered that common commercial borax is a FFIQ.
JESSE B. BRAUNSTEIN. OF ALLENTOWN, PENNSYLVANIA.
NITRO-STARCH EXPLOSIVE Alo. 868,636.
Specification of Letters Patent.
Patented Oct. 22, 907.
Application filed November 19, 1906- Serial No- 344,067.
Be it known that I, Jesse B. BRAUNSTEIN, a citizen oi the lUnitcd States. residing at Allentown, in the county of Lehighan State of Pennsylvania, have invented certain Improvements in Nitro-Starch Explo Myinvention relates in general to the manufacture of nitrated carbohydrates for use as explosive bases and its specific object ism produce for such purpose a stable and economical nitrd-starch.
Nitro-starch is well known to he a powerful explosive, but its commercial use heretofore has been small owfng ti) instability as ordinarily made and its high exrendering it stable. I have discovered however, a treatment which is inexpensive and at the same time results in satisfactory stability of the resulting explosive base.
It is generally understood that the instability of nitrostarch is due to the presence of impurities resulting iroro the nitratiom=these impurities being probably admixed lower nitrate: Stabilization is by some eifectedby washing 'or otherwise treating the nitrated starch with reagents intended to remove the impurities. I have discovered another method, that is to say, I mix into the nitrated starch areagent not for the purpose of removing the impurities but to remain in the mass and ent decomposition due to the presence of said impurities when said incipient decomposition takes place, and
suitable reagent for. said purpose. My explosive base is accordingly a mixture of nitro-starch and borax.
The nitro-starch may be prepared. by any of the known methods but preferably by one which will give the product as much inherent stability' as possible, before the stabilizing agent is added. I have successfully used as an acid mixture 33 to 36% nitric acid, 63 to 67 72 sulfuric; acid and 3 to 4% water, adding one weight oi the starch to four of the acid mixture. The nitrated product is washed in any suitable manner, water and weak solution 'of'ammonia accomplishing the object satisfactorily.
To nitro-starch properly prepared is added a suitable quantity of boiax. I prefer to use approximately 3% of borax, but much larger proportions may be used with the same result, and I do not limit myself to any specific proportions. The borax 'may be added in aqueous solution afterward driving off the water, or part may be added in aqueous solution and part in solid form or the entire amount of borai: may be added in solid form.
Other borates may be substituted for'borax', if desired,
with the same result. I prefer to use common commercial borax, however hecause of its cheapness.
It will'of course be understood that the stabilized nitro-starch mixture herein described is to be used as an explosive base, other usual ingredients being added in making up a commercial powder in the manner wellknown to those skilled in the art.
Having thus described my invention, what I claim as new and desire to secure by LettersPatent is as follows:
1. An explosive consisting of'a mixture of nitro-starch and a borate the latter being added in such proportion as to stabilize the nitro-starch in substantially the manner described. I
2. An explosive consisting or a mixture of intro-starch and box-ax the latter being added in such proportion as to stabilize the ultra-starch in substantially the "manner described.
3., An explosive consisting of a mixture of nlli'o-starch with 3 to 5% of borax. I
In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.
Jesse B. BRsUNs'rmN.
Witnesses Crunuzs H. HQWSON, Jos. H. KLEIN
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34406706A US868636A (en) | 1906-11-19 | 1906-11-19 | Nitro-starch explosive. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34406706A US868636A (en) | 1906-11-19 | 1906-11-19 | Nitro-starch explosive. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US868636A true US868636A (en) | 1907-10-22 |
Family
ID=2937084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US34406706A Expired - Lifetime US868636A (en) | 1906-11-19 | 1906-11-19 | Nitro-starch explosive. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US868636A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108917A (en) * | 1961-07-03 | 1963-10-29 | Canadian Ind | Tnt-tetraborate gelled aqueous explosive slurry |
| US3235425A (en) * | 1960-11-07 | 1966-02-15 | Hercules Powder Co Ltd | Slurry-type blasting compositions containing ammonium nitrate and smokeless powder |
-
1906
- 1906-11-19 US US34406706A patent/US868636A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3235425A (en) * | 1960-11-07 | 1966-02-15 | Hercules Powder Co Ltd | Slurry-type blasting compositions containing ammonium nitrate and smokeless powder |
| US3108917A (en) * | 1961-07-03 | 1963-10-29 | Canadian Ind | Tnt-tetraborate gelled aqueous explosive slurry |
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