WO2008127107A2 - A pyrotechnic colour composition - Google Patents

A pyrotechnic colour composition Download PDF

Info

Publication number
WO2008127107A2
WO2008127107A2 PCT/NL2008/050216 NL2008050216W WO2008127107A2 WO 2008127107 A2 WO2008127107 A2 WO 2008127107A2 NL 2008050216 W NL2008050216 W NL 2008050216W WO 2008127107 A2 WO2008127107 A2 WO 2008127107A2
Authority
WO
WIPO (PCT)
Prior art keywords
composition according
aminotetrazole
pyrotechnic
metal salt
metal
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.)
Ceased
Application number
PCT/NL2008/050216
Other languages
French (fr)
Other versions
WO2008127107A3 (en
Inventor
John Franciscus Zevenbergen
Rutger Webb
Murk Pieter Van Rooijen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Clearspark LLC
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Clearspark LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO, Clearspark LLC filed Critical Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Priority to JP2010504001A priority Critical patent/JP5650524B2/en
Priority to CN2008800120881A priority patent/CN101679137B/en
Priority to HK10106665.9A priority patent/HK1139921B/en
Priority to BRPI0810020-9A priority patent/BRPI0810020B1/en
Priority to EP08741637.6A priority patent/EP2155631B1/en
Priority to ES08741637.6T priority patent/ES2589752T3/en
Publication of WO2008127107A2 publication Critical patent/WO2008127107A2/en
Publication of WO2008127107A3 publication Critical patent/WO2008127107A3/en
Priority to US12/577,081 priority patent/US8142581B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C15/00—Pyrophoric compositions; Flints

Definitions

  • the present invention relates to a pyrotechnic composition comprising a 5-aminotetrazole salt, preferably a fireworks composition comprising a 5-aminotetrazole salt.
  • Object of the present invention is to reduce the environmental impact of fireworks by providing low-smoke, perchlorate-free pyrotechnic compositions that can be used for large scale industrial production of fireworks.
  • a chlorine-containing pyrotechnic compositions which comprises a metal salt of 5-aminotetrazole.
  • a pyrotechnic composition preferably a firework article, comprising a metal salt of 5-aminotetrazole generates relatively low smoke, while being able to generate coloured flames upon combustion.
  • This provides an attractive alternative to the low-smoke pyrotechnic compositions suggested in the prior art, due to the availability of the metal salts.
  • the synthesis of the components in the pyrotechnic composition, and the pyrotechnic composition itself are environmentally friendly.
  • even the combustion of the pyrotechnic compositions of the invention can be called environmentally friendly.
  • the metal salts of 5-aminotetrazole are easy to handle and in addition do not have the risk of self-combustion. Accordingly, the present invention relates to a chlorine-containing pyrotechnic composition which comprises a binder, an oxidator, a pyrotechnic fuel, and a colourant comprising a metal salt of 5-aminotetrazole.
  • the metal salt can be obtained by reacting a corresponding metal compound with 5-aminotetrazole.
  • the metal salt is obtained by reacting the corresponding metal hydroxide, metal sulphate, metal chloride or metal nitrate with 5-aminotetrazole. More preferably, the metal salt is obtained by reacting the corresponding metal hydroxide or metal nitrate with 5-aminotetrazole. Most preferably, the metal salt is obtained by reacting the corresponding metal hydroxide with 5-aminotetrazole.
  • the 5-aminotetrazole can either be in anhydrous form or containing crystal water.
  • the metal to be used in the metal salt is selected from the group consisting of calcium, strontium, barium, copper, potassium, iron, magnesium, lithium, boron, titanium, antimony and aluminium.
  • the metal is strontium, barium or copper.
  • the binder is present in an amount in the range of from 2-96 wt%
  • the oxidator is present in an amount in the range of from 1-85 wt%
  • the pyrotechnic fuel is present in an amount in the range of from 20-96 wt%
  • the metal salt of 5-aminotetrazole is present in an amount of from 2-30 wt%, all amounts based en total pyrotechnic composition.
  • the metal salt of 5-aminotetrazole is present in an amount of from 4-10 wt%, based on total pyrotechnic composition.
  • the binder comprises nitrocellulose or PVC.
  • the binder comprises nitrocellulose.
  • the nitrocellulose to be used in accordance with the present invention will have a nitrogen content of less than 14 wt%, preferably a nitrogen content in the range of from 12-13.5 wt%.
  • the binder to be used according to the present invention will usually be extrudable and energetic.
  • energetic is meant that the binder will decompose exothermically.
  • the oxidator is selected from the group consisting of ammonium nitrate, ammonium perchlorate, barium nitrate, barium chlorate, strontium nitrate, potassium nitrate and potassium perchlorate.
  • the oxidator comprises ammonium nitrate or ammonium perchlorate.
  • the pyrotechnic fuel is selected from the group consisting of nitrocellulose, cellulose, cellulose nitrate, guanidinium nitrate, Arabic gum, red gum and schellack.
  • the pyrotechnic fuel comprises nitrocellulose or cellulose.
  • nitrocellulose can be used as the binder as well as the pyrotechnic fuel.
  • the pyrotechnic composition according to the present invention contains chlorine.
  • the present pyrotechnic compositions comprise chlorine in an amount in the range of from 0.2-20 wt%, preferably in the range of from 1-5 wt%., based on total pyrotechnic composition.
  • the chlorine can be provided by the binder, oxidator and/or colourant.
  • the metal salt of 5-aminotetrazole is protonated by means of an acid.
  • the protonation can be established by contacting 5-aminotetrazole with hydrochloric acid in a suitable solvent and retrieving the formed crystals.
  • the acid is selected from the group consisting of hydrogen chloride, hydrogen bromide, hydrogen iodide, hydrogen fluoride, nitric acid, chloric acid and perchloric acid.
  • the acid is hydrogen chloride, chloric acid or perchloric acid.
  • the pyrotechnic composition to be used in accordance with the present invention may include other conventional components (burn rate modifier, stabilizer, processing additives, flegmatizer, etc.) which are common for those skilled in the art. If present, these components will be present in an amount of less than 10 wt%, based on total pyrotechnic composition.
  • the present invention also relates to a firework article comprising the pyrotechnic composition in accordance with the present invention.
  • the present invention relates to the use of a metal salt of 5-aminotetrazole as described hereinabove in a firework article. More in particular, the invention relates to the use of a metal salt of 5-aminotetrazole as described herein in a low-smoke pyrotechnic composition.
  • the pyrotechnic composition of the invention in particular when used in a firework article, can generate coloured flames upon combustion while generating only very little smoke in comparison with conventional pyrotechnic compositions. Preferably the pyrotechnic composition essentially smoke-free.
  • the present invention further relates to a method for preparing the colourant of the pyrotechnic composition according to the present invention, which method comprises reacting for instance a metal hydroxide or a metal nitrate with 5-aminotetrazole, and recovering the colourant in the form of the metal salt of 5-aminotetrazole so obtained.
  • the process is carried out in the presence of water.
  • the pyrotechnic composition according to the invention can suitably be made by dry mixing the respective components -and pressing the composition so obtained in the desired form.
  • the respective components are mixed in the presence of a solvent, after which the mixture obtained is extruded, and the solvent is removed by means of evaporation.
  • the solvent can suitably be selected from the group consisting of ethanol, or solvents esters such as ethyl acetate, butyl acetate, or alcohols such as isopropanol butanol.
  • the solvent comprises acetone.
  • the solvent is suitably present in an amount in the range of from 0 to 20 wt%, based on total pyrotechnic composition.
  • the solvent is present in an amount in the range of from 5 to 14 wt%, based on total mixture. It will be understood by the skilled person that said solvent will in essence not be present in the pyrotechnic composition eventually obtained, due to evaporation of the solvent concerned.
  • a pyrotechnic composition according to the present was prepared having the following composition: 94.8 wt% Nitrocellulose (13.5% N); 5 wt% Strontium- aminotetrazole complex; and 0.2 wt% Ammoniumchloride.
  • Said pyrotechnic composition was prepared by mixing 100 gram dry NC 13.5% with 5.27 gram Strontium Amino-tetrazole complex and 0.22 gram ammonium chloride. Aceton was then added to said mixture and the mixture thus obtained was mixed until the composition can be shape formed-in a ram- extrusion process in strands of 10 mm diameter. The aceton was removed at room temperature. The strands so obtained are cut in pellets of 10 mm length which pellets are further processed in a firework article. The firework article burnt with a red flame.
  • Example 2 A pyrotechnic composition according to the present was prepared having the following composition: 83 wt% Ammonium Nitrate; 6 wt% Barium- aminotetrazole complex with hydrochloride; 11 wt% Nitrocellulose (13.5% N2). Said pyrotechnic composition was dry mixed in a turbulator. After mixing the composition was pressed in pellets of 15 mm diameter. The composition so prepared burnt with a green flame.
  • a pyrotechnic composition according to the present was prepared having the following composition: 48 wt% Ammonium perchlorate; 17 wt% Aminotetrazole; 5 wt% Strontium-aminotetrazole complex; 30 wt% Nitrocellulose (13.5% N2). Said pyrotechnic composition was dry mixed in a turbulator. After mixing the composition was pressed in pellets of 15 mm diameter. The composition so prepared burnt with a red flame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Air Bags (AREA)

Abstract

The invention provides a chlorine-containing pyrotechnic composition which comprises a binder, an oxidator, a pyrotechnic fuel, and a colourant comprising a metal salt of 5-aminotetrazole. The invention further relates to a firework article comprising such a pyrotechnic composition. In addition, the invention provides a method for preparing said colourant.

Description

Title: A pyrotechnic colour composition
The present invention relates to a pyrotechnic composition comprising a 5-aminotetrazole salt, preferably a fireworks composition comprising a 5-aminotetrazole salt.
Conventional colourful fireworks have the major disadavantage that they generate a lot of smoke which causes major problems in enclosed venues as for instance sport stadiums inside cities.
In US 6,214,139 and US 5,917,146 metal salts of several high nitrogen, low carbon content energetic materials are presented as viable ingredients for low-smoke fireworks compositions. The high nitrogen, low carbon content energetic materials mentioned in these documents are, however, not readily available compounds. In order to prepare these compounds multi-step syntheses are required. Furthermore, in some of these syntheses environmental unfriendly, toxic or hazardous chemical precursors are required. These two issues increase the price of the metal salts of a high nitrogen, low-carbon content considerably.
Object of the present invention is to reduce the environmental impact of fireworks by providing low-smoke, perchlorate-free pyrotechnic compositions that can be used for large scale industrial production of fireworks.
Surprisingly, it has now been found that this object can be realised when use is made of a chlorine-containing pyrotechnic compositions which comprises a metal salt of 5-aminotetrazole. The inventors found that a pyrotechnic composition, preferably a firework article, comprising a metal salt of 5-aminotetrazole generates relatively low smoke, while being able to generate coloured flames upon combustion. This provides an attractive alternative to the low-smoke pyrotechnic compositions suggested in the prior art, due to the availability of the metal salts. In addition, the synthesis of the components in the pyrotechnic composition, and the pyrotechnic composition itself are environmentally friendly. Moreover, even the combustion of the pyrotechnic compositions of the invention can be called environmentally friendly.
Advantageously, the metal salts of 5-aminotetrazole are easy to handle and in addition do not have the risk of self-combustion. Accordingly, the present invention relates to a chlorine-containing pyrotechnic composition which comprises a binder, an oxidator, a pyrotechnic fuel, and a colourant comprising a metal salt of 5-aminotetrazole.
The metal salt can be obtained by reacting a corresponding metal compound with 5-aminotetrazole. Preferably, the metal salt is obtained by reacting the corresponding metal hydroxide, metal sulphate, metal chloride or metal nitrate with 5-aminotetrazole. More preferably, the metal salt is obtained by reacting the corresponding metal hydroxide or metal nitrate with 5-aminotetrazole. Most preferably, the metal salt is obtained by reacting the corresponding metal hydroxide with 5-aminotetrazole. The 5-aminotetrazole can either be in anhydrous form or containing crystal water.
Suitably, the metal to be used in the metal salt is selected from the group consisting of calcium, strontium, barium, copper, potassium, iron, magnesium, lithium, boron, titanium, antimony and aluminium. Preferably, the metal is strontium, barium or copper.
Mixtures of various metal salts can suitably be used to yield desired colours.
Suitably, the binder is present in an amount in the range of from 2-96 wt%, the oxidator is present in an amount in the range of from 1-85 wt%, the pyrotechnic fuel is present in an amount in the range of from 20-96 wt%, and the metal salt of 5-aminotetrazole is present in an amount of from 2-30 wt%, all amounts based en total pyrotechnic composition.
Preferably, the metal salt of 5-aminotetrazole is present in an amount of from 4-10 wt%, based on total pyrotechnic composition. Suitably, the binder comprises nitrocellulose or PVC. Preferably, the binder comprises nitrocellulose.
Suitably, the nitrocellulose to be used in accordance with the present invention will have a nitrogen content of less than 14 wt%, preferably a nitrogen content in the range of from 12-13.5 wt%.
The binder to be used according to the present invention will usually be extrudable and energetic. With the term energetic is meant that the binder will decompose exothermically.
Suitably, the oxidator is selected from the group consisting of ammonium nitrate, ammonium perchlorate, barium nitrate, barium chlorate, strontium nitrate, potassium nitrate and potassium perchlorate.
Preferably, the oxidator comprises ammonium nitrate or ammonium perchlorate.
The pyrotechnic fuel is selected from the group consisting of nitrocellulose, cellulose, cellulose nitrate, guanidinium nitrate, Arabic gum, red gum and schellack.
Preferably, the pyrotechnic fuel comprises nitrocellulose or cellulose.
It will be clear to the skilled person that nitrocellulose can be used as the binder as well as the pyrotechnic fuel. The pyrotechnic composition according to the present invention contains chlorine. Suitably, the present pyrotechnic compositions comprise chlorine in an amount in the range of from 0.2-20 wt%, preferably in the range of from 1-5 wt%., based on total pyrotechnic composition.
The chlorine can be provided by the binder, oxidator and/or colourant. In an attractive embodiment, the metal salt of 5-aminotetrazole is protonated by means of an acid. The protonation can be established by contacting 5-aminotetrazole with hydrochloric acid in a suitable solvent and retrieving the formed crystals. Suitably, the acid is selected from the group consisting of hydrogen chloride, hydrogen bromide, hydrogen iodide, hydrogen fluoride, nitric acid, chloric acid and perchloric acid.
Preferably, the acid is hydrogen chloride, chloric acid or perchloric acid. The pyrotechnic composition to be used in accordance with the present invention may include other conventional components (burn rate modifier, stabilizer, processing additives, flegmatizer, etc.) which are common for those skilled in the art. If present, these components will be present in an amount of less than 10 wt%, based on total pyrotechnic composition. The present invention also relates to a firework article comprising the pyrotechnic composition in accordance with the present invention.
In addition, the present invention relates to the use of a metal salt of 5-aminotetrazole as described hereinabove in a firework article. More in particular, the invention relates to the use of a metal salt of 5-aminotetrazole as described herein in a low-smoke pyrotechnic composition. The pyrotechnic composition of the invention, in particular when used in a firework article, can generate coloured flames upon combustion while generating only very little smoke in comparison with conventional pyrotechnic compositions. Preferably the pyrotechnic composition essentially smoke-free. The present invention further relates to a method for preparing the colourant of the pyrotechnic composition according to the present invention, which method comprises reacting for instance a metal hydroxide or a metal nitrate with 5-aminotetrazole, and recovering the colourant in the form of the metal salt of 5-aminotetrazole so obtained.
Suitably, said process is carried out in the presence of water. The pyrotechnic composition according to the invention can suitably be made by dry mixing the respective components -and pressing the composition so obtained in the desired form. In another embodiment the respective components are mixed in the presence of a solvent, after which the mixture obtained is extruded, and the solvent is removed by means of evaporation. The solvent can suitably be selected from the group consisting of ethanol, or solvents esters such as ethyl acetate, butyl acetate, or alcohols such as isopropanol butanol. Such solvents have the advantage, when compared with conventionally used solvents such as acetone and hexane, that they have a less impact on the environment and that reduce the risk of safety hazards (explosions) considerably. Preferably, the solvent comprises acetone.
The solvent is suitably present in an amount in the range of from 0 to 20 wt%, based on total pyrotechnic composition. Preferably, the solvent is present in an amount in the range of from 5 to 14 wt%, based on total mixture. It will be understood by the skilled person that said solvent will in essence not be present in the pyrotechnic composition eventually obtained, due to evaporation of the solvent concerned.
Examples
Example 1
A pyrotechnic composition according to the present was prepared having the following composition: 94.8 wt% Nitrocellulose (13.5% N); 5 wt% Strontium- aminotetrazole complex; and 0.2 wt% Ammoniumchloride. Said pyrotechnic composition was prepared by mixing 100 gram dry NC 13.5% with 5.27 gram Strontium Amino-tetrazole complex and 0.22 gram ammonium chloride. Aceton was then added to said mixture and the mixture thus obtained was mixed until the composition can be shape formed-in a ram- extrusion process in strands of 10 mm diameter. The aceton was removed at room temperature. The strands so obtained are cut in pellets of 10 mm length which pellets are further processed in a firework article. The firework article burnt with a red flame.
Example 2 A pyrotechnic composition according to the present was prepared having the following composition: 83 wt% Ammonium Nitrate; 6 wt% Barium- aminotetrazole complex with hydrochloride; 11 wt% Nitrocellulose (13.5% N2). Said pyrotechnic composition was dry mixed in a turbulator. After mixing the composition was pressed in pellets of 15 mm diameter. The composition so prepared burnt with a green flame.
Example 3
A pyrotechnic composition according to the present was prepared having the following composition: 48 wt% Ammonium perchlorate; 17 wt% Aminotetrazole; 5 wt% Strontium-aminotetrazole complex; 30 wt% Nitrocellulose (13.5% N2). Said pyrotechnic composition was dry mixed in a turbulator. After mixing the composition was pressed in pellets of 15 mm diameter. The composition so prepared burnt with a red flame.

Claims

Claims
1. A chlorine-containing pyrotechnic composition which comprises a binder, an oxidator, a pyrotechnic fuel, and a colourant comprising a metal salt of 5-aminotetrazole.
2. A composition according to claim 1, wherein the metal salt is obtained by reacting the corresponding metal metal hydroxide or metal nitrate with 5 -aminotetrazole .
3. A composition according to claim 2, wherein the metal salt is obtained by reacting the corresponding metal hydroxide with 5-aminotetrazole.
4. A composition according to any one of claims 1-3, wherein the metal is selected from the group consisting of to calcium, strontium, barium, copper, potassium, iron, magnesium, lithium, boron, titanium, antimony and aluminium.
5. A composition according to claim 4, wherein the metal is strontium, barium or copper.
6. A composition according to any one of claims 1-5, wherein the binder is present in an amount in the range of from 2-20 wt%, the oxidator is present in an amount in the range of from 1-85 wt%, the pyrotechnic fuel is present in an amount in the range of from 20-96 wt%, and the metal salt of 5-aminotetrazole is present in an amount of from 2 to 30 wt%, all amounts based on total pyrotechnic composition.
7. A composition according to claim 6, wherein the metal salt of 5- aminotetrazole is present in an amount of from 4 to 10 wt%, all amounts based on total pyrotechnic composition.
8. A composition according to any one of claims 1-7, wherein the binder comprises nitrocellulose or PVC.
9. A composition according to claim 8, wherein the binder comprises nitrocellulose.
10. A composition according to any one of claims 1-9, wherein the oxidator is selected from the group consisting of ammoniumnitrate, ammoniumperchlorate, barium nitrate, barium chlorate, strontium nitrate, potassium nitrate and potassium perchlorate.
11. A composition according to claim 8, wherein the oxidator comprises ammoinium nitrate or ammonium perchlorate.
12. A composition according to claim 1, wherein the pyrotechnic fuel is selected from the group consisting of nitrocellulose, cellulose, cellulose nitrate, guanidinium nitrate, Arabic gum, red gum and schellack.
13. A composition according to claim 12, wherein the pyrotechnic fuel comprises nitrocellulose or cellulose.
14. A composition according to any one of claims, wherein the metal salt of 5-aminotetrazole is protonated by means of an acid.
15. A composition according to claim 14, wherein the acid is selected from the group consisting of hydrogen chloride, hydrogen bromide, hydrogen iodide, hydrogen fluoride, nitric acid, chloric acid and perchloric acid.
16. A composition according to claim 15, wherein the acid comprises hydrogen chloride, chloric acid or perchloric acid.
17. A firework article comprising the pyrotechnic composition according to any one of claims 1-16.
18. Use of a metal salt of 5-aminotetrazole as described in any one of claims 2-5 in a firework article.
19. A method for preparing the colourant of the pyrotechnic composition as described in any one of claims 1-16, which method comprises reacting a corresponding metal compound with 5-aminotetrazole, and recovering the colourant in the form of the metal salt of 5-aminotetrazole so obtained.
PCT/NL2008/050216 2007-04-16 2008-04-16 A pyrotechnic colour composition Ceased WO2008127107A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2010504001A JP5650524B2 (en) 2007-04-16 2008-04-16 Combustion color composition for fireworks
CN2008800120881A CN101679137B (en) 2007-04-16 2008-04-16 A pyrotechnic color composition
HK10106665.9A HK1139921B (en) 2007-04-16 2008-04-16 A pyrotechnic colour composition
BRPI0810020-9A BRPI0810020B1 (en) 2007-04-16 2008-04-16 FIREWORKS ARTICLE AND USE OF A COMPOUND
EP08741637.6A EP2155631B1 (en) 2007-04-16 2008-04-16 Firework generating coloured flames
ES08741637.6T ES2589752T3 (en) 2007-04-16 2008-04-16 Pyrotechnic generator of colored flames
US12/577,081 US8142581B2 (en) 2007-04-16 2009-10-09 Pyrotechnic colour composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07106234.3 2007-04-16
EP07106234A EP1982969A1 (en) 2007-04-16 2007-04-16 A pyrotechnic colour composition

Publications (2)

Publication Number Publication Date
WO2008127107A2 true WO2008127107A2 (en) 2008-10-23
WO2008127107A3 WO2008127107A3 (en) 2008-12-31

Family

ID=39152653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2008/050216 Ceased WO2008127107A2 (en) 2007-04-16 2008-04-16 A pyrotechnic colour composition

Country Status (7)

Country Link
US (1) US8142581B2 (en)
EP (2) EP1982969A1 (en)
JP (1) JP5650524B2 (en)
CN (1) CN101679137B (en)
BR (1) BRPI0810020B1 (en)
ES (1) ES2589752T3 (en)
WO (1) WO2008127107A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1613569A4 (en) * 2003-04-11 2009-06-03 Autoliv Asp Inc Substituted basic metal nitrates in gas generation

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1982969A1 (en) * 2007-04-16 2008-10-22 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO A pyrotechnic colour composition
EP2526077B1 (en) * 2010-01-19 2018-03-14 Clearspark, LLC Method for preparing a pyrotechnic composition
US9194669B2 (en) 2011-11-04 2015-11-24 Orbital Atk, Inc. Flares with a consumable weight and methods of fabrication and use
JP5711651B2 (en) * 2011-12-09 2015-05-07 カヤク・ジャパン株式会社 Flame retardant composition
CN103030483B (en) * 2012-12-26 2015-05-13 南京理工大学 Bright green cold firework chemical and preparation method thereof
CN103214322A (en) * 2013-05-15 2013-07-24 浏阳市合力高科发展有限公司 Sulfur-smoke-free powder composition and preparation method thereof
CN112409113A (en) * 2019-08-20 2021-02-26 南京理工大学 Environment-friendly pink smoke agent and preparation method thereof
CN110590482A (en) * 2019-10-21 2019-12-20 周昭坤 Environment-friendly gunpowder for fireworks and firecrackers
CN111533630A (en) * 2020-06-16 2020-08-14 湖南坤普科技有限公司 Micro-smoke cooling firework containing light beads and sounders
CN111875457B (en) * 2020-07-15 2021-10-01 北京理工大学 Color agent for fireworks and firecrackers and preparation method thereof
CN112923804B (en) * 2021-03-03 2022-08-09 上栗县金信出口烟花制造有限公司 High-safety environment-friendly nitrate fireworks and manufacturing method thereof
CN113402346A (en) * 2021-07-20 2021-09-17 北京理工大学 Safe and environment-friendly stable explosive and preparation method thereof
CN113929546B (en) * 2021-11-22 2022-08-30 浏阳象形精品烟花出口制造有限公司 Safe nail shooting tablet and preparation method thereof

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657028A (en) * 1964-04-11 1972-04-18 Dow Chemical Co Plastisols and propellants containing alkylene dihydrazines
FR2316204A1 (en) * 1975-07-03 1977-01-28 Poudres & Explosifs Ste Nale A LIGHTING PYROTECHNICAL COMPOSITION GENERATING GAS
US4370181A (en) * 1980-12-31 1983-01-25 Thiokol Corporation Pyrotechnic non-azide gas generants based on a non-hydrogen containing tetrazole compound
US4369079A (en) * 1980-12-31 1983-01-18 Thiokol Corporation Solid non-azide nitrogen gas generant compositions
US5139588A (en) * 1990-10-23 1992-08-18 Automotive Systems Laboratory, Inc. Composition for controlling oxides of nitrogen
US5197758A (en) * 1991-10-09 1993-03-30 Morton International, Inc. Non-azide gas generant formulation, method, and apparatus
US5682014A (en) * 1993-08-02 1997-10-28 Thiokol Corporation Bitetrazoleamine gas generant compositions
DE19505568A1 (en) * 1995-02-18 1996-08-22 Dynamit Nobel Ag Gas generating mixtures
US5917146A (en) * 1997-05-29 1999-06-29 The Regents Of The University Of California High-nitrogen energetic material based pyrotechnic compositions
US6019861A (en) * 1997-10-07 2000-02-01 Breed Automotive Technology, Inc. Gas generating compositions containing phase stabilized ammonium nitrate
JP2000086376A (en) * 1998-09-14 2000-03-28 Daicel Chem Ind Ltd Gas generating composition
CA2347637A1 (en) * 1998-10-22 2000-04-27 Toshio Matsuzawa Explosive composition for fireworks and method for manufacturing the same
JP2000191391A (en) * 1998-10-22 2000-07-11 Nippon Kayaku Co Ltd Pyrotechnic composition and its production
JP2000297078A (en) * 1999-04-15 2000-10-24 Daicel Chem Ind Ltd Method for producing tetrazole metal salt
US6214139B1 (en) * 1999-04-20 2001-04-10 The Regents Of The University Of California Low-smoke pyrotechnic compositions
US6156137A (en) * 1999-11-05 2000-12-05 Atlantic Research Corporation Gas generative compositions
US6627014B1 (en) * 2000-08-07 2003-09-30 Trw Inc. Smokeless gas generating material for a hybrid inflator
US6599379B2 (en) * 2001-04-12 2003-07-29 Dmd Systems, Llc Low-smoke nitroguanidine and nitrocellulose based pyrotechnic compositions
US20060011276A1 (en) * 2002-04-24 2006-01-19 Charles Grix Electrically controlled solid propellant
US7998292B2 (en) * 2004-10-22 2011-08-16 Autoliv Asp, Inc. Burn rate enhancement of basic copper nitrate-containing gas generant compositions
US20080271825A1 (en) * 2006-09-29 2008-11-06 Halpin Jeffrey W Gas generant
EP1982969A1 (en) * 2007-04-16 2008-10-22 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO A pyrotechnic colour composition
EP1982968A1 (en) * 2007-04-16 2008-10-22 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO A low-smoke pyrotechnic composition for producing colored flames
US20080271365A1 (en) * 2007-05-03 2008-11-06 Jonathan Goldfarb Long-Lasting Flame Colorant Composition, Device, And Method Of Production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1613569A4 (en) * 2003-04-11 2009-06-03 Autoliv Asp Inc Substituted basic metal nitrates in gas generation

Also Published As

Publication number Publication date
JP5650524B2 (en) 2015-01-07
EP2155631A2 (en) 2010-02-24
EP1982969A1 (en) 2008-10-22
HK1139921A1 (en) 2010-09-30
BRPI0810020B1 (en) 2020-10-06
BRPI0810020A8 (en) 2018-10-30
ES2589752T3 (en) 2016-11-16
EP2155631B1 (en) 2016-07-13
JP2010525288A (en) 2010-07-22
US8142581B2 (en) 2012-03-27
WO2008127107A3 (en) 2008-12-31
CN101679137B (en) 2012-11-07
US20100024931A1 (en) 2010-02-04
BRPI0810020A2 (en) 2016-06-07
CN101679137A (en) 2010-03-24

Similar Documents

Publication Publication Date Title
EP2155631B1 (en) Firework generating coloured flames
EP2155630B1 (en) A low-smoke pyrotechnic composition for producing colored flames
US6599379B2 (en) Low-smoke nitroguanidine and nitrocellulose based pyrotechnic compositions
US6312537B1 (en) Low-smoke pyrotechnic compositions
CN104276908A (en) Safe environment-friendly novel pyrotechnic composition
CN102811980A (en) Method for preparing pyrotechnic composition and charge
CN111689823A (en) Micro-smoke lead formula and preparation process thereof
CA2434859A1 (en) Flash-ignitable energetic material
WO1998054113A1 (en) High-nitrogen energetic material based on pyrotechnic compositions
RU2393140C1 (en) Solid fuel low-temperature gas-generating composition
HK1139921B (en) A pyrotechnic colour composition
Steinhauser et al. Copper in pyrotechnics
JP5761893B2 (en) Ignition composition
EP2646400A2 (en) Perchlorate-free pyrotechnic mixture
CN110590482A (en) Environment-friendly gunpowder for fireworks and firecrackers
Kukreja et al. 4, 5-Diazido-6-nitropyridazin-3 (2 H)-one: a versatile nitrogen-rich compound for multifaceted energetic applications
HK1140182B (en) A low-smoke pyrotechnic composition for producing colored flames
CN110950727A (en) Preparation method of black smoke agent and black smoke agent
JP2006306630A (en) Stabilizer for gas generant and gas generant composition

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880012088.1

Country of ref document: CN

ENP Entry into the national phase

Ref document number: 2010504001

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2008741637

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2008741637

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08741637

Country of ref document: EP

Kind code of ref document: A2

ENP Entry into the national phase

Ref document number: PI0810020

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20091015