Speciality Chemicals

Dimethyl Thio-Toluene Diamine (DMTDA)

  • CAS No.106264-79-3
  • GradeIndustrial / Pharmaceutical
  • Availability● In Stock

High-purity DMTDA curing agent designed for polyurethane elastomers, offering low viscosity and superior processing performance compared to traditional alternatives.

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Product Technical Details

Product Overview

Dimethyl Thio-Toluene Diamine, commonly abbreviated as DMTDA, represents a advanced class of aromatic diamine curing agents specifically engineered for high-performance polyurethane elastomer systems. This chemical substance serves as a critical component in the synthesis of durable polymer networks, providing exceptional mechanical properties and thermal stability. Our premium grade material is synthesized under strict quality control protocols to ensure consistent reactivity and purity levels suitable for demanding industrial applications.

As a liquid aromatic diamine, this product offers significant processing advantages over solid alternatives. The unique molecular structure incorporates thio-ether linkages which contribute to enhanced flexibility and impact resistance in the final cured product. Manufacturers seeking to optimize their production lines will find this material particularly valuable due to its favorable rheological properties at ambient temperatures.

Key Specifications

ParameterSpecification
CAS Number106264-79-3
Molecular FormulaC9H14N2S2
Molecular Weight214.35 g/mol
AppearanceLight yellow transparent liquid
Density (20 C)1.21 g/cm3
Amine Value536 mgKOH/g
Viscosity (20 C)690 cps
Purity Content≥ 95%
Water Content≤ 0.1%

Industrial Applications

This curing agent is extensively utilized in the manufacture of polyurethane elastomers where high physical performance is required. It is particularly suited for applications involving reaction injection molding (RIM) and rotational molding processes. The low viscosity characteristic allows for easier mixing and degassing, reducing production cycle times and improving overall manufacturing efficiency.

  • Production of high-abrasion resistance polyurethane wheels and rollers.
  • Formulation of durable coatings and linings for industrial equipment.
  • Manufacturing of flexible molds and casting compounds.
  • Development of impact-resistant automotive components and parts.
  • Creation of specialized adhesives and sealants requiring tough bonding.

Processing Advantages

Compared to traditional curing agents such as MOCA, this dimethyl thio-toluene diamine variant offers a safer and more efficient processing profile. The liquid state at room temperature eliminates the need for melting equipment, thereby reducing energy consumption and operational hazards. The lower chemical equivalent weight allows for precise stoichiometric control, ensuring optimal cross-linking density within the polymer matrix.

The isomer mixture typically contains both 2,4 and 2,6 configurations, which provides a balanced cure profile. This balance ensures that the pot life is sufficient for complex molding operations while still achieving full physical properties within a reasonable demold time. Users report improved surface finish and reduced void formation when switching to this liquid diamine system.

Quality Assurance and Supply

Our facility maintains rigorous testing standards for every batch produced. Each shipment is accompanied by a comprehensive Certificate of Analysis (COA) verifying all critical parameters including amine value, viscosity, and purity. We operate as a global manufacturer with the capacity to supply bulk quantities reliably throughout the year. Our logistics network supports various packaging options including galvanized steel drums and IBC containers to suit different volume requirements.