CN108083235A - A kind of oxygen candle starting mix and preparation method thereof - Google Patents
A kind of oxygen candle starting mix and preparation method thereof Download PDFInfo
- Publication number
- CN108083235A CN108083235A CN201711482176.5A CN201711482176A CN108083235A CN 108083235 A CN108083235 A CN 108083235A CN 201711482176 A CN201711482176 A CN 201711482176A CN 108083235 A CN108083235 A CN 108083235A
- Authority
- CN
- China
- Prior art keywords
- chlorate
- mass parts
- starting mix
- powder
- preparation
- 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.)
- Granted
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000001301 oxygen Substances 0.000 title claims abstract description 26
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 28
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical class [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 claims abstract description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000004411 aluminium Chemical group 0.000 claims abstract description 5
- 229910052782 aluminium Chemical group 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 33
- 239000007789 gas Substances 0.000 abstract description 10
- 230000000505 pernicious effect Effects 0.000 abstract description 8
- 229940083898 barium chromate Drugs 0.000 abstract description 7
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical group [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 239000000395 magnesium oxide Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 21
- 239000007787 solid Substances 0.000 description 10
- WBLXMRIMSGHSAC-UHFFFAOYSA-N [Cl].[Cl] Chemical compound [Cl].[Cl] WBLXMRIMSGHSAC-UHFFFAOYSA-N 0.000 description 4
- FTAHXGPNHBWWDP-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-].[O+]#[C-] FTAHXGPNHBWWDP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- ZJRXSAYFZMGQFP-UHFFFAOYSA-N barium peroxide Chemical compound [Ba+2].[O-][O-] ZJRXSAYFZMGQFP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- DCYCMHFULVQWRF-UHFFFAOYSA-L [Cr](=O)(=O)(O)O.[Ba] Chemical compound [Cr](=O)(=O)(O)O.[Ba] DCYCMHFULVQWRF-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- -1 dewatered drying Chemical compound 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0203—Preparation of oxygen from inorganic compounds
- C01B13/0218—Chlorate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Catalysts (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of oxygen candle starting mixs and preparation method thereof.Disclosed starting mix is made in parts by mass of 70~90 mass parts barium chromates, 5~15 mass parts metal simple-substances, 3~10 mass parts binding agents and 0~5 mass parts chlorate.Disclosed preparation method includes：The barium chromate of formula ratio, metal simple-substance, binding agent and chlorate are made.Zirconium powder is replaced with magnesium powder or aluminium powder in the present invention, it is the catalyst that chlorate decomposes that, which there is magnesia on magnesium powder surface, reduces its decomposition temperature, and rapid burning absorbs the pernicious gas nitrogen oxides that exciter igniter cap generates, while the loose no expansion of combustion residue, securely and reliably.
Description
Technical field
The present invention relates to oxygen candle technologies, and in particular to oxygen candle starting mix.
Background technology
Starting mix in country's solid oxygen-making generator at present, typically by the use of zirconium powder as primary raw material, oxidant is adopted
With barium nitrate or barium peroxide, due to being limited by its composition, until the defects of making its ignition performance unstable, simultaneous oxidation agent nitric acid
Phenomena such as easy moisture absorption of barium goes bad, and barium peroxide easily decomposes, causes product that cannot store for a long time.
The content of the invention
The defects of for the prior art or deficiency, it is an object of the invention to provide a kind of oxygen candle starting mixs.
Oxygen candle provided by the invention is with starting mix in parts by mass by 70~90 mass parts barium chromates, 5~15 mass parts gold
Belong to simple substance, 3~10 mass parts binding agents and 0~5 mass parts chlorate to be made.
The metal simple-substance of the present invention is one or both of magnesium powder, aluminium powder, titanium valve and iron powder object mixed above；
The binding agent of the present invention is one or both of kaolin, diatomite and ceramic clay object mixed above；
The chlorate of the present invention is one or both of sodium chlorate and potassium chlorate mixture.
The present invention also provides the preparation methods of oxygen candle starting mix.The preparation method provided includes：By formula ratio
Barium chromate, metal simple-substance, binding agent and chlorate be made.Further, pressing pressure 0.15-0.25T/cm2。
Beneficial effects of the present invention：
1st, zirconium powder being replaced with magnesium powder or aluminium powder in the present invention, it is the catalyst that chlorate decomposes that, which there is magnesia on magnesium powder surface,
Its decomposition temperature is reduced, rapid burning absorbs the pernicious gas nitrogen oxides that exciter igniter cap generates, while combustion residue is loose
Without expansion, securely and reliably.
2nd, chromic acid barium dust is added in the present invention, is a kind of fire retardant, explosion is not generated beneficial to starting mix smooth combustion.
3rd, on the premise of quantity of heat production is identical, ignition charge of the prior art needs dose, and for 2-3 grams, the duration of ignition is 7 seconds left sides
The right side, solid oxygen starting mix of the invention easily ignite, and sensitivity performance is good, and required dose is 0.5-0.6 grams, the duration of ignition 2
Second or so.
4th, solid oxygen starting mix raw material of the invention is easy to get, and toxicity is low.
5th, solid starting mix processing easy to produce of the invention.
Specific embodiment
Embodiment 1：
| Chemical name | Molecular formula | State | Mass parts |
| Barium chromate | BaCrO4 | Powder | 80 |
| Magnesium powder | Mg | Superfine grinding | 10 |
| Kaolin | Al2O3·2SiO2·2H2O | Powder | 5 |
| Sodium chlorate | NaClO3 | Powder | 5 |
Experimental result：
The solid oxygen starting mix of development easily ignites, reacting balance, reduces pernicious gas content, and 2s, which can light up oxygen, to be drawn
Combustion.
Embodiment 2：
| Chemical name | Molecular formula | State | Mass parts |
| Barium chromate | BaCrO4 | Powder | 84 |
| Magnesium powder | Mg | Superfine grinding | 10 |
| Kaolin | Al2O3·2SiO2·2H2O | Powder | 4 |
| Sodium chlorate | NaClO3 | Powder | 2 |
Experimental result：
The solid oxygen starting mix of development easily ignites, reacting balance, reduces pernicious gas content, and 2.5s can light up oxygen
It ignites.
| Detection | Detection method | Testing result | Standard |
| Nitrogen oxides | Nitrogen oxides detection pipe | 1.5ppm | AQ-1057 |
| Carbon monoxide | Carbon Monoxide Detection pipe | 73ppm | AQ-1057 |
| Chlorine | Chlorine detection pipe | 0ppm | AQ-1057 |
| The extent of reaction | Vision | Reacting balance | - |
| Temperature | Land surface pyrometer | 450±2℃ | - |
| The duration of ignition | Stopwatch | 2.5s | - |
Embodiment 3：
Experimental result：
The solid oxygen starting mix of development easily ignites, reacting balance, reduces pernicious gas content, and 2.6s can light up oxygen
It ignites.
| Detection | Detection method | Testing result | Standard |
| Nitrogen oxides | Nitrogen oxides detection pipe | 1.5ppm | AQ-1057 |
| Carbon monoxide | Carbon Monoxide Detection pipe | 73ppm | AQ-1057 |
| Chlorine | Chlorine detection pipe | 0ppm | AQ-1057 |
| The extent of reaction | Vision | Reacting balance | - |
| Temperature | Land surface pyrometer | 450±2℃ | - |
| The duration of ignition | Stopwatch | 2.6s | - |
Embodiment 4：
Experimental result：
The solid oxygen starting mix of development easily ignites, reacting balance, reduces pernicious gas content, and 2.0s can light up oxygen
It ignites.
| Detection | Detection method | Testing result | Standard |
| Nitrogen oxides | Nitrogen oxides detection pipe | 1.5ppm | AQ-1057 |
| Carbon monoxide | Carbon Monoxide Detection pipe | 73ppm | AQ-1057 |
| Chlorine | Chlorine detection pipe | 0ppm | AQ-1057 |
| The extent of reaction | Vision | Reacting balance | - |
| Temperature | Land surface pyrometer | 450±2℃ | - |
| The duration of ignition | Stopwatch | 2.0s | - |
Embodiment 5：
| Chemical name | Molecular formula | State | Mass parts |
| Barium chromate | BaCrO4 | Powder | 90 |
| Magnesium powder | Mg | Superfine grinding | 3 |
| Aluminium powder | Al | Superfine grinding | 2 |
| Kaolin | Al2O3·2SiO2·2H2O | Powder | 2 |
| Sodium chlorate | NaClO3 | Powder | 3 |
Experimental result：
The solid oxygen starting mix of development easily ignites, reacting balance, reduces pernicious gas content, and 3.1s can light up oxygen
It ignites.
| Detection | Detection method | Testing result | Standard |
| Nitrogen oxides | Nitrogen oxides detection pipe | 1.5ppm | AQ-1057 |
| Carbon monoxide | Carbon Monoxide Detection pipe | 73ppm | AQ-1057 |
| Chlorine | Chlorine detection pipe | 0ppm | AQ-1057 |
| The extent of reaction | Vision | Reacting balance | - |
| Temperature | Land surface pyrometer | 450±2℃ | - |
| The duration of ignition | Stopwatch | 3.1s | - |
The starting mix preparation method of above-described embodiment 1-5 is as follows：
By barium chromate, dewatered drying, chlorate far infrared drying oven are dry at 110 ± 5 DEG C at 80 DEG C of temperature first
1h, and be ground to more than 80 mesh with grinder.Then processed sodium chlorate, barium chromate and unclassified stores are claimed by a certain percentage
30min is mixed again, it is to be mixed uniform, φ=10mm, the cylinder of H=5mm, pressure 0.2T/ are pressed by tablet press machine
cm2.The solid oxygen starting mix prepared is put in the reactor, is ignited with igniter cap, collects the gas of generation, detection gas group
Point.
The present invention does not generate explosion beneficial to starting mix smooth combustion, and processing property is good, processing easy to produce, can be rapid
Burning absorbs the pernicious gas nitrogen oxides that exciter igniter cap generates, while the loose no expansion of combustion residue, securely and reliably, meets
Long-term storage.
Claims (4)
1. a kind of oxygen candle starting mix, which is characterized in that in parts by mass, the starting mix is by 70~90 mass parts barium chromates, 5
~15 mass parts metal simple-substances, 3~10 mass parts binding agents and 0~5 mass parts chlorate are made；Metal simple-substance is magnesium powder, aluminium
One or both of powder, titanium valve and iron powder object mixed above；The binding agent is in kaolin, diatomite and ceramic clay
One or more kinds of mixtures.
2. oxygen candle starting mix as described in claim 1, which is characterized in that the chlorate is in sodium chlorate and potassium chlorate
One or two kinds of mixtures.
3. the preparation method of oxygen candle starting mix described in claim 1, which is characterized in that method includes：By the chromic acid of formula ratio
Oxygen candle starting mix is made in barium, metal simple-substance, binding agent and chlorate.
4. the preparation method of oxygen candle starting mix as claimed in claim 3, which is characterized in that pressing pressure 0.15-0.25T/
cm2。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711482176.5A CN108083235B (en) | 2017-12-29 | 2017-12-29 | Transfer powder for oxygen candle and preparation method thereof |
| CH00786/20A CH715622B1 (en) | 2017-12-29 | 2018-10-25 | Propellant for oxygen candles and its manufacturing process. |
| PCT/CN2018/111883 WO2019128427A1 (en) | 2017-12-29 | 2018-10-25 | Oxygen candle starting mix and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711482176.5A CN108083235B (en) | 2017-12-29 | 2017-12-29 | Transfer powder for oxygen candle and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108083235A true CN108083235A (en) | 2018-05-29 |
| CN108083235B CN108083235B (en) | 2021-03-16 |
Family
ID=62180875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711482176.5A Active CN108083235B (en) | 2017-12-29 | 2017-12-29 | Transfer powder for oxygen candle and preparation method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108083235B (en) |
| CH (1) | CH715622B1 (en) |
| WO (1) | WO2019128427A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128427A1 (en) * | 2017-12-29 | 2019-07-04 | 陕西斯达防爆安全科技股份有限公司 | Oxygen candle starting mix and preparation method therefor |
| CN111252738A (en) * | 2020-01-21 | 2020-06-09 | 陕西斯达防爆安全科技股份有限公司 | Oxygen candle medicine |
| CN114804987A (en) * | 2022-05-31 | 2022-07-29 | 山西启安诺华科技有限公司 | Acid-base intervention solid ignition powder for oxygen candle and preparation method thereof |
| CN114890853A (en) * | 2022-05-31 | 2022-08-12 | 山西启安诺华科技有限公司 | Ignition powder for preparing solid oxygen candle by chemical precipitation method |
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| US3972673A (en) * | 1974-09-23 | 1976-08-03 | General Electric Company | Photoflash lamp |
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| CN1054132A (en) * | 1990-02-07 | 1991-08-28 | 恩赛-比克福德公司 | Delay train ignition buffer |
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| CN108083235B (en) * | 2017-12-29 | 2021-03-16 | 陕西斯达防爆安全科技股份有限公司 | Transfer powder for oxygen candle and preparation method thereof |
-
2017
- 2017-12-29 CN CN201711482176.5A patent/CN108083235B/en active Active
-
2018
- 2018-10-25 WO PCT/CN2018/111883 patent/WO2019128427A1/en active Application Filing
- 2018-10-25 CH CH00786/20A patent/CH715622B1/en not_active IP Right Cessation
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| CN1054132A (en) * | 1990-02-07 | 1991-08-28 | 恩赛-比克福德公司 | Delay train ignition buffer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128427A1 (en) * | 2017-12-29 | 2019-07-04 | 陕西斯达防爆安全科技股份有限公司 | Oxygen candle starting mix and preparation method therefor |
| CN111252738A (en) * | 2020-01-21 | 2020-06-09 | 陕西斯达防爆安全科技股份有限公司 | Oxygen candle medicine |
| CN114804987A (en) * | 2022-05-31 | 2022-07-29 | 山西启安诺华科技有限公司 | Acid-base intervention solid ignition powder for oxygen candle and preparation method thereof |
| CN114890853A (en) * | 2022-05-31 | 2022-08-12 | 山西启安诺华科技有限公司 | Ignition powder for preparing solid oxygen candle by chemical precipitation method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019128427A1 (en) | 2019-07-04 |
| CH715622B1 (en) | 2022-01-14 |
| CN108083235B (en) | 2021-03-16 |
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Denomination of invention: A kind of propellant for oxygen candle and preparation method thereof Effective date of registration: 20220920 Granted publication date: 20210316 Pledgee: Pudong Development Bank of Shanghai Limited by Share Ltd. Xi'an branch Pledgor: SHAANXI STAR EXPLOSION SAFETY POLYTRON TECHNOLOGIES Inc. Registration number: Y2022610000608 |
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Denomination of invention: A transfer gunpowder for oxygen candles and its preparation method Granted publication date: 20210316 Pledgee: Pudong Development Bank of Shanghai Limited by Share Ltd. Xi'an branch Pledgor: SHAANXI STAR EXPLOSION SAFETY POLYTRON TECHNOLOGIES Inc. Registration number: Y2024980010866 |