Preparation and application of barium fumarate
By preparing barium fumarate as a dyeing agent and reducing agent, the caking problem caused by the hygroscopicity of barium nitrate was solved, achieving stable and diverse pyrotechnic and fireworks effects.
Patent Information
- Application Number
- CN202411172878.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2026-03-03
AI Technical Summary
Barium nitrate used in existing pyrotechnics and fireworks has hygroscopic properties that cause caking, affecting its application.
Barium fumarate is used as a dyeing agent and reducing agent. It is prepared by reacting with barium carbonate, barium oxide or barium hydroxide, which solves the problem of hygroscopicity. It can be combined with other materials to make pyrotechnic powder and fireworks of various shapes and achieve stable fireworks effects.
It has enabled the stable application of barium fumarate in pyrotechnics and fireworks, avoiding the hygroscopic problem of barium nitrate, and providing a variety of pyrotechnic effects in different shapes and colors.
Abstract
Description
Technical Field
[0001] This invention relates to the chemical industry, pyrotechnics, fireworks and firecrackers and other fields, and to the preparation of barium fumarate as a novel compound material with both dyeing and reducing agent effects, as well as the preparation and application of this material in pyrotechnics, fireworks and firecrackers and other fields. Background Technology
[0002] Barium nitrate is commonly used as a green coloring agent in pyrotechnics and fireworks, as it combines the effects of both a coloring agent and an oxidizing agent, leading to its widespread application. However, barium nitrate has a certain degree of hygroscopicity and is prone to caking, necessitating repeated crushing during application.
[0003] This invention uses fumaric acid with barium carbonate, barium oxide, or barium hydroxide to produce barium fumarate (also known as barium fumarate, barium fumarate, barium corydalis, (E)-butenedioic acid, barium trans-1,2-vinyl dihydroxy acid, hereinafter collectively referred to as barium fumarate). It has both the effect of a pyrotechnic colorant and the function of a reducing agent and combustible material. Most importantly, this carboxyl compound (chelate) has stable physicochemical properties, completely solving the hygroscopic problem of barium salts, thus enabling its widespread application in pyrotechnics, fireworks, and other fields. Summary of the Invention
[0004] This application provides a method for preparing barium transbutenedioic acid, and uses it as a base material for pyrotechnic dyeing agents, applying it to pyrotechnics, fireworks and firecrackers and other fields.
[0005] This invention provides a method for preparing and applying barium fumarate. The method involves dissolving a nominal molar mass of fumarate in a container at a temperature below 200°C (considering safety and cost factors, the actual production process should ideally be controlled below 100°C; the temperature control mentioned below applies and will not be repeated). Then, barium carbonate, barium oxide, or barium hydroxide (including anhydrous to octahydrate barium hydroxide, hereinafter collectively referred to as barium hydroxide) in the same molar ratio is directly added to a high-temperature aqueous solution containing fumarate. Alternatively, barium oxide or barium hydroxide can be fully dissolved, and its aqueous solution can be added to a high-temperature aqueous solution containing fumarate. The reaction can be fully carried out by stirring and heating until the pH value reaches 6-8. Simultaneously, if barium carbonate is used in the reaction, a carbon dioxide gas vent should be provided to prevent carbon dioxide gas expansion.
[0006] The chemical reaction of barium fumarate can also be carried out by placing dry fumarate and dry barium carbonate, barium oxide, or barium hydroxide in a container in the same molar ratio, then adding water at least equal to the total weight of the dry matter, stirring continuously and heating to below 200°C until the pH of the aqueous solution is 6-8. The resulting barium fumarate can then be separated into solid and liquid components by high temperature or cooling, and the barium fumarate can be dried and packaged. The aqueous solution can be reused.
[0007] This invention also provides the preparation and application of barium fumarate in the fields of pyrotechnics and fireworks, which includes thoroughly mixing barium fumarate with any one or more oxidizing agents (such as potassium perchlorate, ammonium perchlorate, nitrates, etc.), any one or more chlorine-containing organic compounds (such as polyvinyl chloride, highly chlorinated polyethylene, chloroprene rubber, etc.), and any one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), and selectively adding any energy-saving agent, smoke suppressant (such as ferrocene powder), and other small amounts of metal powder and / or non-metal powder to form a green... Colored smoke gunpowder; small amounts of any one or more binders (such as resin, flakes, cellulose series adhesive powder, aromatic hydroxyl-containing colloidal substances, rice powder, alcohol polymers, etc.) can be added to make substances of various geometric shapes to act as bright beaded star bodies; barium fumarate can also be mixed with ammonium perchlorate, any one or more nitrocellulose, nitroglycerin, nitroguanidine mixtures, and selectively added small amounts of metal powder and / or non-metal powder to make green flame columns, which can be used in military signal flares, railway signal flares or other devices that require color rendering effects.
[0008] Furthermore, this invention provides the preparation of barium fumarate in the field of non-pyrotechnic materials and its application in the fields of pyrotechnic materials and fireworks. It includes barium fumarate mixed with one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), any one or more chlorinated organic compounds (such as polyvinyl chloride, highly chlorinated polyethylene, chloroprene rubber, etc.), any small amount of one or more binders, other small amounts of metal powder and / or non-metallic powder, and, for the purpose of bright color, a small amount of perchlorate (such as ammonium perchlorate, potassium perchlorate) can be selectively added and thoroughly mixed to form substances of various geometric shapes. These substances are then placed in a mixture of one or more nitrocellulose, nitroglycerin, nitroguanidine, and a cold light flame composed mainly of ammonium perchlorate (where ammonium perchlorate can also be replaced by nitric acid-based organic or inorganic oxidants). Appropriate amounts of catalysts, energy-saving agents, and smoke suppressants (such as ferrocene) powder can be selectively added to increase the aerodynamic force of combustion and achieve a green color effect during combustion.
[0009] Finally, this invention provides the preparation and application of barium fumarate in the fields of non-smoke gunpowder and fireworks. It includes barium fumarate mixed with one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), any one or more chlorinated organic compounds (such as polyvinyl chloride, high-chlorinated polyethylene, chloroprene rubber, etc.), any small amount of one or more binders, other small amounts of metal powder and / or non-metal powder, and, for the purpose of bright color, selectively adding a small amount of perchlorate (such as ammonium perchlorate, potassium perchlorate), and after thorough mixing, to form substances of various geometric shapes. These substances are placed in handheld, ground, or airborne (including aircraft) devices or equipment, ignited by heating (such as using electronic heating ignition), and then treated by wind or by pressurized spraying to achieve a green color effect during combustion. Detailed Implementation
[0010] The present invention relates to barium fumarate, which is synthesized by chemical reaction, and to the preparation of green pyrotechnics (fireworks) using barium fumarate, which is applicable to military and civilian pyrotechnics, as well as fireworks and firecrackers and other wide-ranging fields.
[0011] The technical solutions in the embodiments of the present invention will be clearly and completely described below. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0012] Example 1
[0013] First, prepare fumaric acid, as well as barium carbonate, barium oxide, or barium hydroxide.
[0014] Further, place the rated molar mass of fumaric acid in a container, add water at least equal to the weight of the fumaric acid, and heat to below 200°C to fully dissolve the fumaric acid. Then, add the same molar mass of barium carbonate, barium oxide, or barium hydroxide dry matter to the container of fumaric acid aqueous solution at below 200°C. Alternatively, fully dissolve the same molar mass of barium oxide or barium hydroxide and then pour the aqueous solution into the container of fumaric acid aqueous solution at below 200°C. Continuously stir and heat to allow the reaction to proceed until the pH of the aqueous solution is measured to be 6-8, at which point stirring and the reaction are stopped. Afterward, remove the material from the container and perform solid-liquid separation using centrifugation, pressure filtration, or allow the barium fumarate generated in the aqueous solution to settle naturally before performing solid-liquid separation. The resulting barium fumarate is dried, packaged, and stored. The aqueous solution can be retained for reuse. If barium carbonate is used in the reaction, a carbon dioxide gas vent should be provided to prevent carbon dioxide gas expansion.
[0015] Example 2
[0016] First, prepare fumaric acid, as well as barium carbonate, barium oxide, or barium hydroxide.
[0017] Furthermore, a nominal molar mass of dried fumaric acid and an equal molar mass of dried barium carbonate, barium oxide, or barium hydroxide are placed in the same container. Water, at least equal to the weight of the fumaric acid, is added, and the mixture is continuously heated and stirred until the temperature drops below 200°C, and the pH of the aqueous solution reaches 6-8. The material is then removed from the container, and solid-liquid separation is performed using centrifugation, pressure filtration, or the barium fumarate formed in the aqueous solution can be allowed to settle naturally before solid-liquid separation. The resulting barium fumarate is dried, packaged, and stored. The aqueous solution is retained for reuse. If barium carbonate is used for production, safety precautions should be taken as described in Example 1.
[0018] Example 3
[0019] The prepared barium fumarate was used as a dye in pyrotechnic agents (pharmaceuticals).
[0020] Furthermore, 10-30% barium fumarate and 70-90% ammonium perchlorate are thoroughly mixed, and any one or more nitrocellulose, nitroglycerin, or nitroguanidine mixtures may be selectively added. A small amount of metal powder and / or non-metal powder may also be added to produce green fireworks. These fireworks can also be constructed in tubular or other geometrically shaped containers to form green fireworks torches.
[0021] Example 4
[0022] Choose to mix 10-30% barium fumarate with 45-65% potassium perchlorate, 5-20% of any one or more chlorinated organic compounds (such as polyvinyl chloride, high-chlorinated polyethylene, chloroprene rubber, etc.) or ammonium perchlorate, and 10-40% of any one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.). You may selectively add appropriate amounts of catalysts, energy-saving agents, smoke suppressants (such as ferrocene) powder, and other small amounts of metal powders and / or non-metal powders. Mix thoroughly to make green light explosion fireworks, and then make green light firecrackers and other green light explosion pyrotechnics with different effects.
[0023] Example 5
[0024] Select 10-30% barium fumarate, 30-50% potassium perchlorate, 3-10% of any one or more chlorinated organic compounds (such as polyvinyl chloride, high-chlorinated polyethylene, chloroprene rubber, etc.), 5-25% of any one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), and add a small amount of one or more binders (such as resin, flakes, cellulose series adhesive powder, aromatic hydroxyl-containing colloidal substances, rice powder, alcohol polymers, etc.), and other small amounts of metal powder and / or non-metal powder. After thorough mixing, moisten with water or organic solvent to form substances of various geometric shapes. Then dry the above materials and store them in a warehouse for use as bright bead star bodies.
[0025] Example 6
[0026] 10-30% barium fumarate is mixed with 10-50% of single or multiple metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), 5-20% of any one or more chlorinated organic compounds (such as polyvinyl chloride, high-chlorinated polyethylene, chloroprene rubber, etc.), and a small amount of one or more binders (such as resin, flakes, cellulose series adhesive powder, aromatic hydroxyl-containing colloidal substances, rice powder, alcohol polymers, etc.). For the sake of bright color, a small amount of perchlorate (such as ammonium perchlorate, potassium perchlorate) can be selectively added and thoroughly mixed to form substances of various geometric shapes. These substances are then placed in a mixture of one or more nitrocellulose, nitroglycerin, nitroguanidine, and ammonium perchlorate as the main component of a cold light flame. Ammonium perchlorate can also be replaced by nitric acid-based organic or inorganic oxidants. Appropriate amounts of catalysts, energy-saving agents, smoke suppressants (such as ferrocene) powder, and other small amounts of metal powders and / or non-metal powders can be selectively added to increase the aerodynamic force of combustion and achieve a green color effect during combustion.
[0027] Example 7
[0028] Mix 10-30% barium fumarate with 10-50% of single or multiple metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), 5-20% of any one or more chlorinated organic compounds (such as polyvinyl chloride, high-chlorinated polyethylene, chloroprene rubber, etc.), add a small amount of one or more binders (such as resin, flakes, cellulose series adhesive powder, aromatic hydroxyl-containing colloidal substances, rice powder, alcohol polymers, etc.), and other small amounts of metal powder and / or non-metal powder. For the sake of bright color, a small amount of perchlorate (such as ammonium perchlorate, potassium perchlorate) may be selectively added. After thorough mixing, various geometric shapes of the material are formed. The material is placed in a handheld, ground, or airborne (including aircraft) device or equipment and ignited by heating (such as using electronic heating ignition). The material is then treated by wind or by pressurized spraying to achieve a green color effect during combustion.
Claims
1. A barium fumarate material, the key technical feature of which is that it is formed by reacting fumarate with barium carbonate, barium oxide, or barium hydroxide through an aqueous solution as a medium and heating.
2. The preparation method according to claim 1, comprising: Dissolve the rated molar mass of fumaric acid completely in a container at a temperature below 200°C (in actual production, the temperature should be controlled below 100°C due to safety and cost considerations). Then, add barium carbonate, barium oxide, or barium hydroxide (including anhydrous to octahydrate barium hydroxide, hereinafter collectively referred to as barium hydroxide) in the same molar proportion directly to the high-temperature aqueous solution containing fumaric acid. Alternatively, fully dissolve barium oxide or barium hydroxide and then add its aqueous solution to the high-temperature aqueous solution containing fumaric acid. Allow the reaction to proceed fully by stirring and heating until the pH value reaches 6-8. If barium carbonate is used in the reaction, a carbon dioxide vent should be provided to prevent carbon dioxide gas expansion. Alternatively, dry fumaric acid and dry barium carbonate, barium oxide, or barium hydroxide are placed in a container in equal molar proportions. Water, not less than the total weight of the dry matter, is then added, and the mixture is continuously stirred and heated to below 200°C (in actual production, the temperature should be controlled below 100°C for safety and cost considerations) until the pH of the aqueous solution reaches 6-8. The resulting barium fumarate can then be separated into solid and liquid components by high-temperature or cooling methods. The barium fumarate can then be dried and packaged, and the aqueous solution can be reused.
3. The preparation and application of the contents of claim 1 in the field of pyrotechnics and fireworks includes fully mixing barium fumarate with any one or more oxidizing agents (such as potassium perchlorate, ammonium perchlorate, nitrates, etc.), any one or more chlorine-containing organic compounds (such as polyvinyl chloride, highly chlorinated polyethylene, chloroprene rubber, etc.), and any one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), and selectively adding any energy-saving agent, smoke suppressant (such as ferrocene) powder, and other small amounts of metal powder and / or non-metal powder to form a green Fireworks; small amounts of any one or more binders (such as resin, flakes, cellulose series adhesive powder, aromatic hydroxyl-containing colloidal substances, rice powder, alcohol polymers, etc.) can be added to make substances of various geometric shapes to act as bright beaded star bodies; barium fumarate can also be mixed with ammonium perchlorate, any one or more nitrocellulose, nitroglycerin, nitroguanidine mixtures, and selectively added small amounts of metal powder and / or non-metal powder to make green fire columns, which can be used in military signal flares, railway signal flares or other devices that require color rendering effects.
4. The preparation of the contents of claim 1 in the field of non-smoke powder and its application in the fields of pyrotechnics and fireworks, comprising barium fumarate and one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), any one or more chlorinated organic compounds (such as polyvinyl chloride, high-chlorinated polyethylene, chloroprene rubber, etc.), any small amount of one or more binders, other small amounts of metal powder and / or non-metallic powder, and selectively adding a small amount of perchlorate (such as ammonium perchlorate, potassium perchlorate) for bright color and mixing thoroughly to form substances of various geometric shapes, placed in one or more nitrocellulose, nitroglycerin, nitroguanidine mixtures, and cold light fireworks with ammonium perchlorate as the main component (ammonium perchlorate can also be replaced by nitric acid organic or inorganic oxidants), and selectively adding appropriate amounts of catalyst, energy-saving agent, and smoke suppressant (such as ferrocene) powder to increase the aerodynamic force of combustion and achieve a green color effect during combustion.
5. The preparation and application of the contents of claim 1 in the field of non-smoke gunpowder and fireworks includes barium fumarate and one or more metal powders (such as aluminum powder, aluminum-magnesium alloy powder, titanium powder, iron powder, etc.), any one or more chlorinated organic compounds (such as polyvinyl chloride, high-chlorinated polyethylene, chloroprene rubber, etc.), any small amount of one or more binders, other small amounts of metal powder and / or non-metal powder, and selectively adding a small amount of perchlorate (such as ammonium perchlorate, potassium perchlorate) for the purpose of bright color, and after thorough mixing, it is made into a substance of various geometric shapes, placed in a handheld, ground, or air (including aircraft) device or equipment, ignited by heating (such as using electronic heating ignition), and then treated by wind or by pressurized spraying to achieve a green color effect during combustion.