US1867283A - Plastic explosive mixture of high shattering power - Google Patents
Plastic explosive mixture of high shattering power Download PDFInfo
- Publication number
- US1867283A US1867283A US461652A US46165230A US1867283A US 1867283 A US1867283 A US 1867283A US 461652 A US461652 A US 461652A US 46165230 A US46165230 A US 46165230A US 1867283 A US1867283 A US 1867283A
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- US
- United States
- Prior art keywords
- explosive mixture
- mixture
- plastic explosive
- liquid
- explosive
- 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
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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
- C06B25/32—Compositions containing a nitrated organic compound the compound being nitrated pentaerythritol
Definitions
- the collodion-cotton is preferably first completely saturated with the liquid nitric acid esters and this mixture in a cold or heated state and partly or totally gelatinized is then mixed with the powdery pentaerythrite tetranitrate and kneaded.
- This composition is known as penthrinite. Its sensitiveness against shocks can be reduced below that of the shock-proof and shotresisting picric acid by adding to the liquid nitric acid esters, prior to gelatinizing, a phlegmatizing agent soluble in the latter, such as camphor, and a stabilizing agent such as for instance Centralite or urethane. Centralite is dimethyl-diphenyl-urea.
- Such a gelatinized penthrinite differs from the known explosive gelatine (nitrogelatine) and all the other special explosive gelatines (nitrogelatines), in that it does not age, i. e. it retains unaltered its extraordinary detonation velocity during any length of storage.
- the filling of projectiles, aero-shells, hand-grenades, mines etc. may be done before or after swelling takes place. If, for instance, the pressing or casting of the mixture is done in a cold condition, then the gelatination takes place slowly and will become complete, according to the temperature of the day and the proportion of nitroglycol within from a few hours to some weeks.
- the advantage nitric acid ester of polyvalent aliphatic alcoobtained by the addition of collodion-cotton consists chiefly in the fixation of the liquid constituents which renders possible the employment of penthrinites containing a large proportion of nitroglycerine and being, therefore, particularly efiicient.
- EwampZe. to 5% of a not easily congealable liquid mixture consisting of 75% nitroglycerine and 25% nitroglycol in which 0 to 6% camphor with or without 0.1 to 3.0% Centralite or urethane has been previously dissolved and in which thereupon, in a cold condition or after heating, 8 to 0.1% collodion-cotton has been incorporated, is mixed with 5 to 95% pentaerythrite tetranitrate.
- a plastic explosive mixture detonating withmaximum velocity suitable for military purposes, consisting of a mixture of 5 to 95 parts by weight of pentaerythrite-tetranitrate with 95 to 5 parts by weight of a liquid hols, and 8 to 0.1% collodion-cotton.
- a process of manufacturing a plastic, explosive composition which consists in mixing 5 to 95 parts of pentaerythrite-tetranitrate with 95 to 5 parts all by weight of a liquid nitric acid ester of polyvalent aliphatic alcohols, to which 8 to 0.1% of collodioncotton has previously been added.
- camphor as phlegmatizing agent up to 6% is added prior to the gelatination with collodion-cotton, in which prior to gelatination and phlegmatizing a stabilizing medium is dissolved in the liquid ester-component at the ratio of 0.1 to 3%.
Description
' PatentedJuly 12, 1932 PATENT OFFICE ALFRED STETTIBAGHER, OF ZURICH, SWITZERLAND PLASTIC EXPLOSIVE MIXTURE OF HIGH SHATTERING POWER No Drawing. Application filed June 16, 1930, Serial No. 461,652, and in Switzerland February 27, 1930.
In the course of further researches concerning the explosive mixture, which forms the object of the application No. 363,999, 1 filed May 17, 1929 it has become evident that 5 it may be desirable for military as well as for industrial purposes to deprive the said mixture (which consists of crystalline pentaerythrite tetranitrate and'liquid aliphatic nitric acid esters of polyvalent alcohols, such as nitroglycerine, dinitroglycol, or a mixture of both) of its oily character partly or wholly by adding collodion-cotton in a quantity corresponding to 0.5 to 8 of the liquid nitrate constituents. The collodion-cotton is preferably first completely saturated with the liquid nitric acid esters and this mixture in a cold or heated state and partly or totally gelatinized is then mixed with the powdery pentaerythrite tetranitrate and kneaded. This composition is known as penthrinite. Its sensitiveness against shocks can be reduced below that of the shock-proof and shotresisting picric acid by adding to the liquid nitric acid esters, prior to gelatinizing, a phlegmatizing agent soluble in the latter, such as camphor, and a stabilizing agent such as for instance Centralite or urethane. Centralite is dimethyl-diphenyl-urea. At the same time the explosive mass becomes more plastic and tough and acquires such a stability that it can be stored indefinitely, although possessing a superior explosive power than the charges of projectiles hitherto generally utilized. Such a gelatinized penthrinite differs from the known explosive gelatine (nitrogelatine) and all the other special explosive gelatines (nitrogelatines), in that it does not age, i. e. it retains unaltered its extraordinary detonation velocity during any length of storage.
According to the required purposes the filling of projectiles, aero-shells, hand-grenades, mines etc. may be done before or after swelling takes place. If, for instance, the pressing or casting of the mixture is done in a cold condition, then the gelatination takes place slowly and will become complete, according to the temperature of the day and the proportion of nitroglycol within from a few hours to some weeks. The advantage nitric acid ester of polyvalent aliphatic alcoobtained by the addition of collodion-cotton consists chiefly in the fixation of the liquid constituents which renders possible the employment of penthrinites containing a large proportion of nitroglycerine and being, therefore, particularly efiicient.
The following is an example of an explosive mixture according to the present in vention.
EwampZe.- to 5% of a not easily congealable liquid mixture consisting of 75% nitroglycerine and 25% nitroglycol in which 0 to 6% camphor with or without 0.1 to 3.0% Centralite or urethane has been previously dissolved and in which thereupon, in a cold condition or after heating, 8 to 0.1% collodion-cotton has been incorporated, is mixed with 5 to 95% pentaerythrite tetranitrate.
What I claim is 1. A plastic explosive mixture detonating withmaximum velocity, suitable for military purposes, consisting of a mixture of 5 to 95 parts by weight of pentaerythrite-tetranitrate with 95 to 5 parts by weight of a liquid hols, and 8 to 0.1% collodion-cotton.
2. A process of manufacturing a plastic, explosive composition which consists in mixing 5 to 95 parts of pentaerythrite-tetranitrate with 95 to 5 parts all by weight of a liquid nitric acid ester of polyvalent aliphatic alcohols, to which 8 to 0.1% of collodioncotton has previously been added.
3. A process as described in claim 2 in which camphor as phlegmatizing agent up to 6% is added prior to the gelatination with collodion-cotton.
4. A process as described in claim 2 in which camphor as phlegmatizing agent up to 6% is added prior to the gelatination with collodion-cotton, in which prior to gelatination and phlegmatizing a stabilizing medium is dissolved in the liquid ester-component at the ratio of 0.1 to 3%.
In testimony whereof I have signed my name to this specification.
ALFRED STETTBACHER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1867283X | 1930-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1867283A true US1867283A (en) | 1932-07-12 |
Family
ID=4566584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US461652A Expired - Lifetime US1867283A (en) | 1930-02-27 | 1930-06-16 | Plastic explosive mixture of high shattering power |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1867283A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2471851A (en) * | 1943-08-18 | 1949-05-31 | Ici Ltd | Manufacture of high-explosive compositions or charges |
| US2852359A (en) * | 1958-09-16 | Method of manufacturing sheaper | ||
| US3379588A (en) * | 1964-02-27 | 1968-04-23 | Bombrini Parodi Delfino S P A | Manufacture of plastic high-power blasting explosive compositions and charges |
-
1930
- 1930-06-16 US US461652A patent/US1867283A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2852359A (en) * | 1958-09-16 | Method of manufacturing sheaper | ||
| US2471851A (en) * | 1943-08-18 | 1949-05-31 | Ici Ltd | Manufacture of high-explosive compositions or charges |
| US3379588A (en) * | 1964-02-27 | 1968-04-23 | Bombrini Parodi Delfino S P A | Manufacture of plastic high-power blasting explosive compositions and charges |
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