Dimethylthio Toluene Diamine (DMTDA), identified by its CAS number 106264-79-3, is a high-performance liquid aromatic diamine widely utilized as a crucial curing agent and chain extender in the production of advanced polyurethane and polyurea systems. Also known by synonyms such as 3,5-Dimethylthio-2,4-toluenediamine, 2,4-Diamino-3,5-dimethylthiotoluene, DADMT, and Ethacure 300, DMTDA offers a unique combination of processing ease and performance enhancement in the final polymer product.

Chemically, DMTDA has the molecular formula C9H14N2S2 and a molecular weight of 214.36. It is typically available as a clear to pale yellow liquid with a characteristic odor. Key physical properties include a boiling point around 200°C at 1.68 mmHg and a density of approximately 1.206 g/cm³.

The primary function of DMTDA stems from its reactivity with isocyanates. As an aromatic diamine, it provides a balance between reactivity and processing window, offering a fast cure speed which is particularly beneficial in applications requiring rapid demolding or application. Unlike some other amine curing agents, the presence of methylthio groups in the structure helps to moderate its reactivity, providing a usable pot life while still achieving rapid cure.

The integration of DMTDA into polyurethane and polyurea formulations significantly contributes to the final material's performance characteristics. Polymers cured with DMTDA exhibit excellent mechanical properties, including high tensile strength, tear strength, and abrasion resistance. Furthermore, these systems demonstrate superior resistance to a wide range of chemicals, solvents, water, and heat, making them suitable for demanding environments.

Common applications for DMTDA cured systems include:
- Protective Coatings: Used in industrial floor coatings, pipeline coatings, bridge coatings, and tank linings due to its chemical resistance and durability.
- Elastomers: Employed in the production of cast elastomers for applications like rollers, screens, and seals where high mechanical strength and resilience are required.
- Adhesives and Sealants: Provides strong bonding and durable sealing properties.
- Spray Applications: Its fast cure speed makes it ideal for spray-applied polyurea systems used in waterproofing, lining trucks, and infrastructure protection.

The versatility of DMTDA as a curing agent allows for tailoring the properties of the final polymer by adjusting formulation variables. Its ability to enhance properties such as abrasion resistance, chemical resistance, and mechanical strength makes it an indispensable component in high-performance polymer systems.

When sourcing chemical raw materials like DMTDA, purity and consistency are paramount to ensure reproducible results and optimal performance in end applications. A minimum purity of 98% is typically specified to meet the stringent requirements of performance polymer manufacturing.

As a reliable manufacturer and supplier of fine chemicals and active pharmaceutical ingredients, NINGBO INNO PHARMCHEM CO.,LTD. understands the critical importance of quality and reliability for industrial customers. We are committed to providing high-quality Dimethylthio Toluene Diamine (DMTDA) CAS 106264-79-3 to meet the diverse needs of the polyurethane and polyurea industries.

For businesses looking to buy Dimethylthio Toluene Diamine or inquire about the current price, NINGBO INNO PHARMCHEM CO.,LTD. offers competitive pricing and various packaging options, including bulk supply in drums, to accommodate different scales of operation. Our focus is on building long-term partnerships by ensuring product quality, supply chain stability, and responsive customer service. Customers interested in purchasing DMTDA or requesting detailed specifications and safety data sheets are encouraged to contact us directly. We strive to be your preferred supplier for this essential chemical intermediate.