ADDOLINK 1604

Addolink 1604 provides an extended cure time (~ 3 times longer) compared with conventional amines such as DMTDA, while providing physical properties that exceed DETDA, DMTDA, and MOCA.
Addolink 1604 is a specialized aromatic amine curing agent primarily used in the production of polyurethane elastomers, where it serves as a critical component for initiating and controlling the curing reaction with isocyanate prepolymers. 
Addolink 1604s chemical structure, which includes aromatic amine groups, enables it to form strong covalent bonds with the isocyanate groups, resulting in a densely crosslinked polymer network.

CAS Number: 32961-44-7
Molecular Formula: C11H15ClN2O2
Molecular Weight: 242.7
EINECS Number: 251-311-5

Synonyms: 32961-44-7, Benzoic acid, 3,5-diamino-4-chloro-, 2-methylpropyl ester, EINECS 251-311-5, DTXSID8067735, DTXCID1038616, Isobutyl 3,5-diamino-4-chlorobenzoate, Isobutyl 4-chloro-3,5-diaminobenzoate, isobutyl 3,5-diamino-4-chloro benzoate, 2-methylpropyl 3,5-diamino-4-chlorobenzoate, MFCD00272560, ISOBUTYL-3,5-DIAMINO-4-CHLOROBENZOATE, Oprea1_570944, SCHEMBL559800, KHUIRIRTZCOEMK-UHFFFAOYSA-N, ALBB-010545, AKOS003273097, CS-W012761, FI38385, AC-31728, AS-10933, DB-048304, NS00021124, H10815, AE-641/32253052, SR-01000389386, SR-01000389386-1, TIMTEC-BB SBB003200;3,5-diamino-4-chloro-benzoicaci2-methylpropylester;3,5-Diamino-4-Chioro Benzoic Acid -2-Methylpropyl Ester;(4-chlorophenyl)-(3,4-dimethylphenyl)methanone;Addolink 1604;Baytec XL 1604;(2-(4-aMinophenyl)-2-Methylpropyl)carbaMate;3,5-DIAMINO-4-CHLORO-BENZOIC ACID ISOBUTYL ESTER

Addolink 1604 is an aromatic diamine crosslinker for heat curing polyurethane prepolymers.
Specically, Addolink 1604 produces a harder elastomer with enhanced tear strength, tensile strength, and elongation at break.
This crosslinking significantly improves the mechanical strength, elasticity, and chemical resistance of the cured polyurethane materials, making Addolink 1604 an ideal choice for applications that demand durability and long-lasting performance.

Addolink 1604, an aromatic diamine, is used as a crosslinking agent in combination with prepolymers for the manufacture of high-quality heat curing PUR elastomers, giving considerably longer casting times than other amine crosslinking agents.
Addolink 1604 has a long pot life and is suitable for large volume articles.
Addolink 1604 has good MBOCA substitute.

Addolink 1604 is an aromatic diamine.
Addolink 1604 is used as a crosslinking agent in combination with prepolymers for the manufacture of high-quality heat curing PUR elastomers, giving considerably longer casting times than other amine crosslinking agents.
If protected from moisture, Addolink 1604 has a shelf life of 12 months.

The curing agent is especially valued in industrial processes where the final polyurethane elastomer must exhibit high resistance to abrasion, tearing, and deformation under continuous mechanical stress. 
By promoting efficient and uniform curing, Addolink 1604 helps manufacturers produce components such as wheels, rollers, seals, and bushings that maintain their shape and functionality even after prolonged use in harsh environments. 
These environments often involve exposure to oils, solvents, heat, and repeated mechanical loads, conditions under which Addolink 1604-cured elastomers consistently perform well.

In addition to enhancing physical properties, Addolink 1604 also contributes to thermal stability, allowing polyurethane parts to retain their mechanical integrity at elevated temperatures, which is crucial for applications in automotive, industrial machinery, and material handling sectors. 
Its compatibility with a wide range of isocyanate prepolymers provides formulators the flexibility to adjust the hardness, flexibility, and resilience of the final elastomeric products to meet specific performance criteria.

Moreover, the use of Addolink 1604 can lead to optimized processing characteristics, including shorter curing times and better control over the reaction kinetics. 
This results in increased manufacturing efficiency, improved batch-to-batch consistency, and reduced residual stresses within the cured elastomer, all of which contribute to the reliability and longevity of the final product.

Addolink 1604 also positively influences processing efficiency by enabling faster curing cycles and improved reaction control. 
This results in increased throughput in manufacturing environments and enhances the consistency and reproducibility of elastomer properties across different production batches. 
The curing agent’s performance also minimizes residual stresses and potential defects in the final product, which are critical factors for ensuring product reliability and customer satisfaction.

Melting point: 86-90 °C(lit.)
Boiling point: 390.1±37.0 °C(Predicted)
Density: 1.252±0.06 g/cm3(Predicted)
vapor pressure: 0-3Pa at 25-110℃
storage temp.: under inert gas (nitrogen or Argon) at 2–8 °C
form: Solid, particulate/powder
pka: 1.75±0.10(Predicted)
LogP: -0.97

Addolink 1604 is a versatile and highly effective curing agent that plays a vital role in producing high-quality polyurethane elastomers used across various demanding industries, enabling the manufacture of durable, resilient, and chemically resistant materials essential for modern industrial applications.
Addolink 1604 is an aromatic diamine. Used as a crosslinking agent in combination with prepolymers for the manufacture of high-quality heat curing PUR elastomers, giving considerably longer casting times than other amine crosslinking agents. 
If protected from moisture, it has a shelf life of 12 months.

Due to its potent reactivity and potential health hazards, handling Addolink 1604 requires adherence to strict safety protocols, including the use of personal protective equipment and proper ventilation to minimize exposure to vapors and dust. 
Safe storage conditions and thorough training for personnel are essential to prevent accidents and ensure safe usage.
Addolink 1604 is widely recognized in the polyurethane industry as an aromatic amine curing agent that significantly enhances the performance characteristics of elastomeric materials by facilitating rapid and thorough crosslinking during the curing process. 

Its molecular composition includes reactive amine groups that readily react with isocyanate functionalities, creating a robust three-dimensional polymer network that imparts exceptional mechanical strength, elasticity, and chemical resistance to the resulting polyurethane products. 
This makes Addolink 1604 particularly suitable for demanding applications where materials are required to withstand repetitive mechanical stress, abrasion, and exposure to harsh chemicals without compromising structural integrity.

In manufacturing settings, Addolink 1604 is frequently employed to produce a wide variety of polyurethane elastomers used in industrial wheels, conveyor rollers, seals, gaskets, and vibration-damping components.
These products often operate under continuous heavy load and harsh environmental conditions, such as exposure to oils, greases, solvents, and elevated temperatures. 
The curing agent’s ability to deliver a consistent, high-quality cure ensures that such components maintain their dimensional stability, resilience, and durability over long service lives, thereby reducing maintenance costs and downtime in industrial operations.

Addolink 1604 contributes to improved thermal and chemical stability of cured elastomers, which is crucial for applications in automotive and aerospace industries where materials must perform reliably under fluctuating temperatures and exposure to fuels, lubricants, and other aggressive substances. 
Its compatibility with various isocyanate prepolymers allows formulators to tailor the physical properties of polyurethane elastomers, including hardness, tensile strength, and elongation, to meet precise performance requirements of specialized applications.

Uses Of Addolink 1604:
Addolink 1604 is extensively utilized in the production of polyurethane elastomers, which are essential materials in various industrial applications due to their remarkable durability, elasticity, and resistance to wear and chemicals. 
One of the primary uses of Addolink 1604 is in the manufacturing of industrial wheels and rollers that are employed in conveyor systems, forklifts, and material handling equipment, where the cured polyurethane must withstand continuous mechanical stress, abrasion, and exposure to harsh environments, including contact with oils, greases, and solvents. 

The curing agent’s role in producing a tough and resilient elastomer ensures that these wheels and rollers maintain their shape, provide excellent load-bearing capacity, and contribute to smoother, more efficient operations in logistics and manufacturing facilities.
In addition to material handling, Addolink 1604 plays a critical role in the fabrication of seals, gaskets, and bushings used in hydraulic and pneumatic systems, where components must endure fluctuating pressures and resist degradation from exposure to hydraulic fluids, lubricants, and temperature variations. 

The ability of Addolink 1604 to produce polyurethane elastomers with superior chemical resistance and dimensional stability is vital for maintaining tight seals and preventing leaks that could otherwise result in equipment failure or safety hazards.
The automotive industry also benefits from Addolink 1604 through its use in manufacturing vibration dampers, suspension components, and other elastomeric parts that improve vehicle performance and passenger comfort. 
These parts must absorb shocks and vibrations generated during vehicle operation while resisting chemical attack from fuels and oils, and the curing characteristics enabled by Addolink 1604 contribute to producing materials that meet these stringent demands.

Addolink 1604 is employed in the production of custom-molded polyurethane parts used in various specialty applications, including protective coatings, flexible grips, and impact-resistant components in sectors such as electronics, aerospace, and consumer goods. 
The curing agent’s versatility allows formulators to fine-tune the hardness, flexibility, and resilience of the polyurethane elastomers to suit specific functional requirements, thereby expanding the range of applications where Addolink 1604-based materials can be effectively utilized.

Addolink 1604 supports advancements in manufacturing efficiency by enabling faster curing times and better control over the reaction kinetics during the production process. 
This efficiency not only increases throughput but also improves product consistency, reduces waste, and lowers energy consumption, which are important factors in sustainable industrial practices.
Addolink 1604 serves as an indispensable curing agent across a diverse array of applications where the production of high-performance polyurethane elastomers is required. 

Addolink 1604 contribution to enhanced mechanical strength, chemical resistance, and thermal stability makes it a key component in industries ranging from material handling and automotive to electronics and aerospace, supporting the creation of durable, reliable, and high-quality products that meet modern engineering challenges.
Addolink 1604 finds extensive application in the production of polyurethane elastomers that are designed to meet the rigorous demands of industrial, automotive, and specialty manufacturing sectors. 

In particular, this curing agent is favored for formulating materials used in industrial wheels and rollers, which are subjected to continuous abrasion, heavy loads, and frequent impact forces in settings such as warehouses, assembly lines, and distribution centers. 
The durability and resilience imparted by Addolink 1604 ensure that these polyurethane components maintain their shape and functionality over extended periods, significantly reducing downtime and maintenance costs associated with equipment failure.

Addolink 1604 is instrumental in creating seals, gaskets, and bushings that must perform reliably in hydraulic and pneumatic systems operating under high pressure and varying temperatures. 
The elastomers cured with this agent provide excellent resistance to degradation caused by exposure to hydraulic fluids, oils, and other aggressive chemicals, which is essential for maintaining the integrity of machinery and preventing leaks that could compromise operational safety and efficiency. 
This reliability is particularly important in critical industrial applications such as manufacturing plants, heavy machinery, and fluid control systems.

Addolink 1604 through its use in vibration damping components and suspension parts that enhance ride comfort and vehicle stability. 
These polyurethane elastomers must absorb shocks and vibrations generated by road conditions while resisting chemical exposure from fuels, lubricants, and environmental contaminants. 
The curing properties of Addolink 1604 allow for the production of parts that combine flexibility with toughness, thereby extending the lifespan of automotive components and improving overall vehicle performance.

Addolink 1604 is also utilized in specialty applications requiring custom-molded polyurethane parts that possess specific mechanical and chemical properties. 
For example, it is used in producing flexible grips, protective coatings, impact-resistant casings for electronic devices, and various aerospace components that must withstand extreme environmental conditions without losing their mechanical integrity. 
Its versatility enables formulators to adjust the hardness, elasticity, and chemical resistance of the elastomers to meet the precise requirements of these high-performance applications.

Safety Profile Of Addolink 1604:
Addolink 1604, being an aromatic amine-based curing agent, presents several significant health and safety hazards that must be carefully managed to ensure safe handling and use in industrial environments. 
One of the primary concerns is its potential to cause skin sensitization and allergic reactions upon direct contact, as the chemical can penetrate the skin barrier and trigger immune responses that may lead to dermatitis or other chronic skin conditions. 

Prolonged or repeated exposure may increase the likelihood of developing sensitization, making it crucial for workers to wear appropriate protective gloves and clothing to minimize skin contact.
In addition to skin hazards, inhalation of vapors, dust, or aerosols containing Addolink 1604 can pose serious respiratory risks. 
Exposure to airborne particles may irritate the mucous membranes of the nose, throat, and lungs, causing symptoms such as coughing, wheezing, shortness of breath, or chest tightness. 

In some cases, inhalation can lead to respiratory sensitization or asthma-like conditions, especially in individuals with pre-existing respiratory issues or allergies. 
Therefore, it is essential to operate in well-ventilated areas and use respiratory protection when adequate ventilation cannot be maintained.

Addolink 1604 may also cause eye irritation upon accidental splashes or exposure to dust, resulting in redness, pain, and watering. 
Immediate flushing with plenty of water is necessary to reduce the risk of more severe eye damage. 
Given these hazards, safety eyewear such as goggles or face shields should be worn during handling and processing to protect against accidental contact.