Shaanxi BLOOM Tech Co., Ltd. is one of the most experienced manufacturers and suppliers of 4,4'-methylenedianiline cas 101-77-9 in China. Welcome to wholesale bulk high quality 4,4'-methylenedianiline cas 101-77-9 for sale here from our factory. Good service and reasonable price are available.
4,4'-Methylenedianiline also known as MDA, CAS 101-77-9, molecular formula C13H14N2, is a light yellow crystal that turns black when exposed to light. Difficult to dissolve in water, easily soluble in ethanol, ether, and benzene. Used for adhesives, laminates, and coatings. It can also be used as a vulcanization accelerator for hydrogenated butadiene rubber and latex, as well as a thiazole accelerator and activator in natural rubber and styrene butadiene rubber. It is also used in the production of diisocyanates, polyamides, etc. As an important organic chemical intermediate, it plays a crucial role in various fields such as rubber industry, insulation materials, dye industry, organic synthesis, resin curing agents, heat-resistant polymers and polyisocyanate monomers, analytical reagents, and other special applications.
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Chemical Formula |
C13H14N2 |
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Exact Mass |
198 |
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Molecular Weight |
198 |
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m/z |
198 (100.0%), 199 (14.1%) |
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Elemental Analysis |
C, 78.75; H, 7.12; N, 14.13 |
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Synthesis of 4,4'-Methylenedianiline:
Firstly, hydrochloric acid, water and newly evaporated aniline are cooled under stirring, then formaldehyde solution is added and the reaction is heated. The reaction product is 4,4 '- diaminodiphenylmethane hydrochloride After neutralization and alkalization of the reaction product with sodium carbonate solution, steam distillation was carried out until there was no aniline in the fraction Finally, the precipitate is re dissolved with a little excess of hydrochloric acid, precipitated step by step with dilute ammonia water, and the first precipitated resinous substance is filtered, and excess ammonia water is added to the filtrate to obtain a white crystalline precipitate, which is filtered to obtain the product. Further purification can be achieved by recrystallization with ethanol or water.
4,4'-Methylenedianiline (MDA), as an important organic chemical intermediate, plays a crucial role in multiple industrial fields. Its unique chemical properties and structure make it the cornerstone for manufacturing various high-performance materias and chemicals. This article will cover rubber industry, insulation materias, dye industry, organic synthesis, resin curing agents, heat-resistant polymers and polyisocyanate monomers, analytical reagents, and other special applications.
In the rubber industry, it is an indispensable additive. It is mainly used as a vulcanization accelerator and antioxidant to enhance the performance and stability of rubber products.
1. Vulcanization accelerator
In the process of rubber vulcanization, it can accelerate the vulcanization reaction, shorten the vulcanization time, and improve the vulcanization efficiency. This characteristic enables rubber products to achieve the required physical and chemical properties faster during the production process, thereby improving production efficiency. In addition, it can improve the adhesion performance between rubber and metal skeleton, and enhance the structural strength of rubber products.
2. Antioxidants
Rubber products are easily corroded by oxidizing substances such as oxygen and ozone during use, leading to performance degradation or even failure.
As an effective antioxidant, it can delay the aging process of rubber and extend the service life of rubber products. It is particularly suitable for rubber products such as tires, sidewalls, ply cords, inner tubes, conveyor tubes, rubber hoses, and V-belts, providing long-lasting protection for these products.
3. Application of rubber varieties
In synthetic rubber such as natural rubber and styrene butadiene rubber, as a thiazole promoter and activator, it can significantly improve the processing performance of rubber and the physical properties of the final product. It can also serve as an antioxidant and anti-aging agent for special rubbers such as chloroprene rubber and butyl rubber, enhancing their weather resistance and chemical corrosion resistance.
It also occupies an important position in the field of insulation materia manufacturing. It is mainly used for producing high-performance insulation paints, laminates, adhesives, etc.
1. Insulation paint
The insulation paint synthesized using it has excellent heat resistance, insulation properties, and mechanical properties. These insulating paints are widely used in the insulation treatment of electrical equipment such as motors, transformers, wires and cables, which can effectively prevent current leakage and short circuit accidents. They can also withstand long-term operation in high-temperature environments, ensuring the stability and safety of electrical equipment.
2. Laminated board
In laminated board manufacturing, as an important component of resin curing agent, it can enhance the interlayer adhesion and overall strength of laminated boards.
These laminates have excellent electrical and mechanical properties, making them suitable for producing high-performance insulation materias such as electrical insulation laminates and motor liners. They have broad application prospects in fields such as aerospace, electronics, and electrical appliances.
3. Adhesive
It can also be used to prepare high-performance H-grade adhesives. These adhesives have excellent heat resistance, bonding strength, and chemical corrosion resistance, which can meet the bonding needs under extreme conditions such as high temperature and high pressure. They play an important role in fields such as aerospace and automotive manufacturing, providing reliable bonding solutions for these industries.
In the dye industry, it is an important intermediate raw materia. It is mainly used for synthesizing high-performance dye products such as azo dyes.
1. Synthesis of azo dyes
Azo dyes are an important class of synthetic dyes with advantages such as bright color and good fastness. As a key raw materia in the synthesis of azo dyes, it can react with various coupling components to generate azo dyes with specific colors. These dyes are widely used in the coloring process of industries such as textiles, leather, and papermaking, providing a wide range of color choices for these industries.
2. Improvement of dye performance
By introducing high-performance intermediate materias such as 4,4 '- diaminodiphenylmethane, the color vividness, fastness, and weather resistance of azo dyes can be significantly improved. This makes these dyes have broader application prospects in high-end textiles, outdoor products, and other fields. They can also meet the requirements of environmental regulations and reduce the harm to the environment and human health.
Multifunctional intermediates in the field of organic synthesis
In the field of organic synthesis, it is a highly valuable multifunctional intermediate. It can participate in various organic reactions to synthesize organic compounds with specific structures and properties.
1. Polyamide synthesis
High performance polyamide materias can be synthesized using 4,4 '- diaminodiphenylmethane. These polyamide materias have excellent mechanical properties, heat resistance, and chemical corrosion resistance, and are widely used in fields such as aerospace, automotive manufacturing, electronics, and electrical appliances. They can withstand long-term operation under extreme conditions such as high temperature and high pressure, providing reliable materia support for these industries.
2. Preparation of corrosion inhibitors
4,4'-Methylenedianiline can also be used to prepare chemicals such as corrosion inhibitors. These corrosion inhibitors can inhibit the corrosion rate of metals in corrosive media and extend the service life of metal equipment. They have broad application prospects in fields such as petrochemicals and marine engineering, providing effective anti-corrosion solutions for these industries.
3. Synthesis of other organic compounds
In addition to the aforementioned applications, it can also be used for synthesizing various other organic compounds. For example, it can be used as an important raw materia for synthesizing certain pharmaceutical intermediates, pesticide raw materias, etc. These organic compounds play an important role in fields such as medicine and pesticides, providing strong guarantees for human health and agricultural production.
Key components of resin curing agent
In the field of resin curing agents, it also occupies an important position. It is mainly used in the curing process of thermosetting resins such as epoxy resins.
1. Curing of epoxy resin
Epoxy resin is an important thermosetting resin with excellent adhesion, chemical corrosion resistance, and mechanical properties. During the curing process of epoxy resin, as an important component of the curing agent, it can undergo chemical reactions with the epoxy resin to form a three-dimensional network structure of polymer compounds. This cured product has excellent physical and chemical properties and is widely used in fields such as coatings, adhesives, and composite materias.
2. Optimization of curing performance
By adjusting the dosage and curing conditions, the curing performance of epoxy resin can be optimized. For example, increasing the amount of curing agent can improve the crosslinking density and hardness of the cured product; Raising the curing temperature can accelerate the curing reaction rate and shorten the curing time. These optimization measures can meet the performance requirements of epoxy resin in different application scenarios.
3. Expansion of application fields
With the advancement of technology and the development of industry, the application fields of epoxy resin are constantly expanding. As a key component of epoxy resin curing agents, it will also play an important role in more fields. For example, in the aerospace field, high-performance epoxy resin composite materias are widely used in the manufacturing of aircraft fuselage, wings and other components; In the field of electronic appliances, epoxy resin adhesives are used for packaging and fixing electronic components.
Important sources of heat-resistant polymers and polyisocyanate monomers
It also plays a crucial role in the production of heat-resistant polymers and polyisocyanate monomers. It is mainly used for synthesizing high-performance materials such as polyimide and polyurethane elastomers.
1. Polyimide synthesis
Polyimide is a polymer materia with excellent heat resistance, insulation, and mechanical properties. High performance polyimide resins and films can be synthesized using it. These materias have broad application prospects in aerospace, electronics and electrical fields, and can meet the needs of extreme conditions such as high temperature and high pressure.
2. Polyurethane elastomer chain extender
In the manufacturing of polyurethane elastomers, as an important component of chain extenders, it can increase the length and crosslinking density of polyurethane molecular chains. This makes polyurethane elastomers have superior elasticity, wear resistance, and chemical corrosion resistance. They have broad application prospects in fields such as automobile manufacturing, shoe materias, and seals.
3. Synthesis of polyisocyanate monomers
4,4'-Methylenedianiline can also be used to synthesize chemicals such as polyisocyanate monomers. These polyisocyanate monomers are important raw materias for manufacturing polyurethane foam, coatings and other high-performance materias. They have broad application prospects in fields such as construction, furniture, and automobiles, providing a rich selection of materias for these industries.
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