The Benefits of Using Rubber Antioxidant RD (TMQ)

Rubber antioxidant TMQ is a type of rubber additive that is widely used in the rubber industry. It is known for its ability to improve the heat resistance and aging properties of rubber products. TMQ is a highly effective antioxidant that helps prevent the degradation of rubber by reacting with oxygen and other reactive substances.

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One of the main benefits of using TMQ is its ability to increase the service life of rubber products. Rubber products that are exposed to high temperatures and other harsh environmental conditions can quickly deteriorate and lose their properties. TMQ helps to prevent this by neutralizing the harmful effects of oxygen and other reactive substances, thereby slowing down the aging process of rubber.

TMQ is also known for its versatility. It can be used in a wide range of rubber products, including tires, hoses, belts, and seals. Its effectiveness is not limited to a specific type of rubber, making it a popular choice among rubber manufacturers. With its numerous benefits and widespread use, TMQ continues to be an important additive in the rubber industry.

Chemical Structure of TMQ

TMQ, also known as 2,2,4-Trimethyl-1,2-dihydroquinoline polymer, is a type of rubber antioxidant that is widely used in the rubber industry. The chemical structure of TMQ is composed of a polymer of 2,2,4-trimethyl-1,2-dihydroquinoline units, which are linked together by carbon-carbon bonds.

The molecular formula of TMQ is C12H15N, and its molecular weight is 173.26 g/mol. The chemical structure of TMQ is shown in the following figure:

As shown in the figure, TMQ consists of a polymeric chain of dihydroquinoline units, which are connected by a carbon-carbon bond. The dihydroquinoline units have a hydrophobic nature and are responsible for the antioxidant activity of TMQ.

TMQ is a highly effective antioxidant due to its unique chemical structure, which allows it to scavenge free radicals and prevent oxidative degradation of rubber. The polymeric chain of TMQ provides a large surface area for interaction with free radicals, while the dihydroquinoline units possess electron-donating properties that help to stabilize the free radicals.

In summary, the chemical structure of TMQ is composed of a polymeric chain of dihydroquinoline units linked together by carbon-carbon bonds. This unique structure allows TMQ to effectively scavenge free radicals and prevent oxidative degradation of rubber.

Production Process of TMQ

Raw Materials

The production of TMQ involves the use of several raw materials, including 2,2,4-trimethyl-1,2-dihydroquinoline, aniline, and acetone. 2,2,4-trimethyl-1,2-dihydroquinoline is the primary raw material used in the production of TMQ, and it is typically obtained through a reaction between isobutylene and para-phenylene diamine.

Synthesis Method

The synthesis of TMQ involves several steps, including the reaction of 2,2,4-trimethyl-1,2-dihydroquinoline with aniline in the presence of a catalyst. The reaction mixture is then heated to a high temperature, typically around 150-200°C, to promote the formation of the desired product. The resulting mixture is then cooled and filtered to remove any impurities.

Purification

After the synthesis of TMQ, the product is typically purified to remove any remaining impurities. This is typically accomplished through a process known as column chromatography, in which the product is passed through a column containing a stationary phase. The stationary phase is typically composed of a material such as silica gel or aluminum oxide, which selectively adsorbs impurities while allowing the desired product to pass through.

Overall, the production process of TMQ involves several steps, including the use of several raw materials and the application of various synthesis and purification techniques. Through careful control of these processes, high-quality TMQ can be produced for use as a rubber antioxidant.

Properties of TMQ

Physical Properties

Rubber antioxidant TMQ is a reddish-brown solid that is insoluble in water but soluble in many organic solvents. It has a melting point of approximately 80°C and a boiling point of around 250°C. TMQ has a specific gravity of 1.05 and a molecular weight of 173.26 g/mol.

Chemical Properties

TMQ is a highly effective antioxidant that can prevent the degradation of rubber and other organic materials caused by heat, oxygen, and ozone. It has a unique molecular structure that allows it to trap free radicals and neutralize them before they can damage the rubber. TMQ is also known for its ability to enhance the performance of other antioxidants, making it a popular additive in rubber manufacturing.

In addition to its antioxidant properties, TMQ also has some other chemical properties that make it useful in a variety of applications. For example, it is a good stabilizer for polyolefins and other plastics, and it can act as a curing agent for epoxy resins. TMQ is also used as a food preservative and as a stabilizer for gasoline and lubricating oils.

Overall, TMQ is a versatile and effective antioxidant that has a wide range of applications in various industries. Its unique properties make it an essential ingredient in many rubber products, and its ability to prevent degradation and extend the lifespan of materials makes it a valuable addition to many other products as well.

Applications of TMQ

Rubber Industry

TMQ is widely used in the rubber industry as an antioxidant for the protection of rubber products from degradation caused by heat, oxygen, and other environmental factors. It is particularly effective in prolonging the service life of tires, rubber hoses, and conveyor belts.

TMQ is often used in combination with other antioxidants to provide synergistic effects. For example, it can be used with phenolic antioxidants to improve the stability of rubber products and extend their shelf life.

Other Industries

Apart from the rubber industry, TMQ is also used in other industries such as plastics, adhesives, and coatings. In the plastics industry, it is used as a stabilizer for polypropylene, polyethylene, and other polymers. It helps to prevent degradation caused by heat, UV radiation, and other environmental factors.

In the adhesive industry, TMQ is used as an antioxidant to improve the stability of adhesives and sealants. It helps to prevent discoloration, loss of adhesion, and other degradation issues.

In the coatings industry, TMQ is used as an antioxidant for the protection of coatings from degradation caused by heat, UV radiation, and other environmental factors. It is particularly effective in prolonging the service life of automotive coatings, industrial coatings, and other high-performance coatings.

Overall, TMQ is a versatile antioxidant that is widely used in various industries for the protection of products from degradation caused by environmental factors. Its effectiveness, low toxicity, and ease of use make it a popular choice for manufacturers looking to improve the quality and durability of their products.

Effectiveness of TMQ as an Antioxidant

Mechanism of Action

TMQ is an effective antioxidant that is widely used in rubber processing industries. It works by reacting with the free radicals that are formed during the oxidation process, thereby preventing the degradation of rubber products. The mechanism of action of TMQ involves the formation of a stable nitroxide radical that can scavenge free radicals and terminate the oxidation chain reaction.

Comparative Analysis

Compared to other antioxidants, TMQ has several advantages. It has a high solubility in rubber and is effective over a wide temperature range. It also has a low volatility and does not cause any discoloration of the rubber products. Additionally, TMQ has a low toxicity and is safe to use in rubber processing.

In a comparative study, TMQ was found to be more effective than other antioxidants such as IPPD and 6PPD in preventing the degradation of rubber products. The study concluded that TMQ is a superior antioxidant that can provide long-term protection to rubber products.

Overall, TMQ is an effective antioxidant that can prevent the degradation of rubber products by reacting with free radicals. It has several advantages over other antioxidants and is widely used in rubber processing industries.

Regulatory and Safety Considerations

Handling and Storage

Rubber antioxidant TMQ is a stable chemical compound that is relatively easy to handle and store. However, it is important to take certain precautions to ensure its safe handling and storage.

When handling TMQ, it is recommended to use protective equipment such as gloves and goggles to avoid skin and eye contact. In case of accidental contact, wash the affected area with plenty of water and seek medical attention if necessary.

TMQ should be stored in a cool, dry, and well-ventilated area. Avoid exposure to direct sunlight, heat, and moisture. Keep the container tightly closed when not in use.

Regulatory Compliance

Rubber antioxidant TMQ is subject to various regulations and standards to ensure its safe use and handling.

In the United States, TMQ is regulated by the Environmental Protection Agency (EPA) under the Toxic Substances Control Act (TSCA). TMQ is listed in the TSCA Chemical Substance Inventory and is generally recognized as safe for its intended use.

In the European Union, TMQ is regulated by the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation. TMQ is registered under REACH and is subject to certain restrictions and requirements.

It is important to follow all applicable regulations and guidelines when handling and using TMQ to ensure its safe and responsible use.

Market Overview

Rubber antioxidant TMQ (also known as RD) is a type of chemical compound that is widely used in the rubber industry. It is used to improve the durability and performance of rubber products by preventing the oxidation and degradation of rubber.

Global Demand

The global demand for rubber antioxidant TMQ is expected to continue to grow in the coming years. This is due to the increasing demand for rubber products in various industries, such as automotive, construction, and consumer goods.

If you are looking for more details, kindly visit Rubber Antioxidant RD (TMQ).

According to a report by Grand View Research, the global rubber antioxidant market size was valued at USD 1.83 billion in and is expected to grow at a compound annual growth rate (CAGR) of 4.1% from to .

Key Players and Suppliers

There are several key players and suppliers in the rubber antioxidant TMQ market. These include:

• Eastman Chemical Company
• Lanxess AG
• Kumho Petrochemical Co., Ltd.
• Agrofert
• Shandong Sunsine Chemical Co., Ltd.

These companies are actively involved in research and development activities to improve the performance of rubber antioxidant TMQ and to develop new products that meet the changing needs of the market.

In conclusion, the global demand for rubber antioxidant TMQ is expected to continue to grow in the coming years, driven by the increasing demand for rubber products in various industries. The key players and suppliers in the market are focused on research and development activities to improve the performance of TMQ and to meet the changing needs of the market.

Challenges and Research

Environmental Impact

One of the major challenges with the use of rubber antioxidant TMQ is its potential impact on the environment. TMQ is a petroleum-based product, and its production and use can lead to the release of harmful pollutants into the air and water. Furthermore, the disposal of TMQ-containing waste can also have negative environmental consequences. As a result, researchers are exploring ways to reduce the environmental impact of TMQ production and use.

Advancements and Innovations

Despite the environmental challenges associated with TMQ, researchers continue to explore new advancements and innovations in the field. One area of focus is the development of new, more sustainable methods for producing TMQ. For example, some researchers are investigating the use of bio-based materials as an alternative to petroleum-based feedstocks.

Another area of research is the development of new, more effective forms of TMQ. For example, some researchers are exploring the use of nanotechnology to create more efficient and targeted forms of TMQ. These innovations could help to reduce the amount of TMQ needed for a given application, thereby reducing its environmental impact.

Overall, while there are certainly challenges associated with the use of rubber antioxidant TMQ, ongoing research and innovation are helping to address these issues and improve the sustainability of this important material.

During long-term storage and use, rubber and its products will gradually become sticky, hard, brittle, or cracked due to the effects of heat, oxygen, ozone, variable valence metal ions, mechanical stress, light, high-energy radiation, as well as other chemical substances and mold erosion. This phenomenon where physical and mechanical properties decrease over time and elasticity decreases is called aging.

As the aging process progresses and develops, the performance of rubber and its products will gradually decrease, leading to complete loss of useful value. To this end, certain chemical substances need to be added to rubber and its products to enhance their resistance to various destructive effects mentioned above, delay or inhibit the aging process, and thus extend the storage and service life of rubber and its products. These substances are called antioxidants.

1. The three products with the highest production of antioxidant

In , the production of antioxidant products reached tons, accounting for 34% of the total production of rubber additives, ranking high among all rubber additive categories. Among all antioxidant products, the production of TMQ, 6PPD, and IPPD is the largest, with TMQ, 6PPD, and IPPD accounting for 80% of antioxidant products, making them the mainstream varieties of antioxidants.

◆ Anti aging agent TMQ (RD)

It is a type of universal antioxidant with good protection against aging caused by heat and oxygen. It is applied to various tires, rubber hoses, tape, rubber shoes, rubber fabric products, and latex products. It is suitable for producing all steel and semi steel radial tires and is one of the largest production and consumption varieties of antioxidants in the world. The use of antioxidant TMQ in combination with phenylenediamine antioxidant 6PPD and protective wax forms complementary advantages, forming a typical protective system for rubber products. It is the main antioxidant formula in the processing of radial tires. It can inhibit oxidation, thermal aging, and weather aging under harsh conditions, but has poor protection against bending and cracking. The main component of antioxidant TMQ is a polymer of 2,2,4-trimethyl-1,2-dihydroquinoline, and the content of the dimer has a significant impact on its antioxidant properties.

◆ Antioxidant 6PPD ()

Natural rubber, cis-1,4-polybutadiene rubber, isoprene rubber, styrene butadiene rubber, nitrile rubber, and chloroprene rubber are used as ozone resistant and antioxidant agents. They have excellent resistance to fatigue and ozone cracking, with efficacy ranging from to NA. When used in combination with wax, they increase static protection efficiency and also have good protection against heat, oxygen, copper, and manganese. If the temperature exceeds 35-40 ℃, it will slowly clump. When the dosage exceeds 2.5 parts, it has a slight softening effect on the rubber material, and there is no effect on the mechanical properties of vulcanized rubber below 2.5 parts. When the dosage exceeds 2.5 parts, the tensile strength and elongation decrease. Especially suitable for use with heat-resistant adhesives when combined with antioxidant MB.

◆ Anti aging agent

A universal antioxidant for natural rubber and synthetic rubber latex. Excellent protection against ozone cracking and bending cracking; It is also an excellent protective agent for heat, oxygen, light, and general aging. It can also inhibit the aging effect of variable valence metal ions and has a comprehensive protective performance compared to (CPPD). Under sunlight, it will change color, but it does not affect efficiency. It has a low melting point and is easily dispersed. Its solubility in rubber is higher than 40 10, and its frost resistance is smaller. Therefore, it can increase the dosage and is commonly used in products under high dynamic and static stress conditions. This product can be used alone, and when used in conjunction with antioxidant AW or wax production, it can reduce usage and improve protective effectiveness. It has improved static ozone cracking resistance when used in combination with wax.

2. Antioxidants are divided into 5 categories based on their chemical structure

Amine antioxidants (aldehyde amine antioxidants, ketamine antioxidants, diaryl secondary amines, para phenylenediamines), phenolic antioxidants (divided into mono phenols, bisphenols, and polyphenols), heterocyclic antioxidants, phosphite ester antioxidants, and other types of antioxidants (long-term antioxidants, nickel salts, and waxes).

◆ Aldehyde amine antioxidant. It is a reaction product of fatty aldehydes and primary aromatic amines, and is the oldest category of antioxidants. Aldehydes and amines are effective in aging caused by heat, oxygen, and light. They have good dispersibility in rubber compounds, but are contaminated and are not suitable for light colored products. There are: antioxidant AH and AP.

Ketamine type antioxidants. Has good antioxidant effects. There are: antioxidant RD, antioxidant AW, antioxidant BLE.

Diaryl secondary amine antioxidant. This is one of the ancient varieties that still rank among all antioxidants, including antioxidant D (D), antioxidant A (A), and antioxidant DNP.

◆ Phenylenediamine antioxidant. It includes the most important type of antioxidant and is also a very promising type of antioxidant. There are: antioxidant NA/IPPD, antioxidant /6PPD, antioxidant /CPPD, antioxidant ODA, antioxidant DPPD, antioxidant 7PPD, antioxidant 8PPD, antioxidant /DTPD, antioxidant 445.

The protective effect of phenolic antioxidants and other antioxidants is not as good as that of amine antioxidants, but they have outstanding non polluting properties, such as antioxidant , antioxidant BHT (264), antioxidant SP, and antioxidant BHA.

◆ Heterocyclic antioxidants (sulfur containing types), including antioxidant MB, antioxidant MMB, antioxidant MBZ, and antioxidant MMBZ. Antioxidant MB is an important type of non polluting antioxidant.

◆ Phosphite antioxidant, including TNP antioxidant. Phosphite esters are hydrogen peroxide decomposers and free radical scavengers that act as auxiliary antioxidants in polymer systems. They are often used in combination with hindered phenols and are rarely used alone.

◆ Long acting antioxidant. When rubber products are used in high temperature and vacuum environments, the antioxidant in rubber will decrease or lose its protective effect due to volatilization. For example, if rubber products are used in contact with liquid media for a long time, they may decrease or lose their protective effectiveness due to rapid extraction. Non volatile or low volatile, non extractable or low extractable antioxidants developed for this purpose, according to currently publicly available products include nitroso diphenylamine (NDPA), allyl substituted phenols (TAP), etc.

◆ Nickel salt antioxidant (sulfur containing type), including: antioxidant NDBC, antioxidant NDIBC, and antioxidant NDMC. All are green powders, which have the best ozone protection performance and also have protective effects on thermal oxygen aging and fatigue aging.

◆ Wax type antioxidant, when its dosage in rubber exceeds its solubility in rubber, migrates to the surface after vulcanization, forming a protective film that can effectively prevent static ozone cracking of products, including paraffin and microcrystalline wax.

Newly developed antioxidant. Tributylurea derivatives, lactam derivatives, non flexing (anti flexing) LAS (LAS-P) for styrene substituted diphenylamine or 4,4 '- stilbene substituted diphenylamine, diisopropylphenyl substituted DPPD (DP), sulfide triazine derivatives, 6-QDI, Durazone37, and other types.

Henan Rongxinxin Technology Co. , Ltd. is an experienced manufacturer of rubber auxiliaries.

Since , we have been providing innovative rubber product solutions to help our industrial and manufacturing customers develop higher quality products and reduce their operating costs.Our products are widely used in Rubber products Industry,Special for aerospace,rail transit,marine and automotive.

We are also one of the most environmentally friendly rubber auxiliary companies operating today.Alwanys working hard to develop environmentally friendly rubber auxiliaries to protect the environment.

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