Dimethyl Thio-Toluene Diamine, commonly referred to as DMTDA (CAS No.106264-79-3), is a high-value liquid aromatic diamine chain extender and curing agent for polyurethane and polyurea industries. Serving as a superior substitute for traditional solid curing agents like MOCA, DMTDA features balanced reactivity, easy room-temperature processing and excellent mechanical properties of finished goods. It is widely adopted by global formulators for elastomers, protective coatings and adhesives, especially for applications requiring reasonable pot life and outstanding dynamic load resistance.
I. Basic Product Description
Dimethyl thio-toluene diamine DMTDA is light‑yellow to amber transparent liquid at room temperature, with molecular formula C₉H₁₄N₂S₂. For our standard industrial grade, the amine value is controlled within 525‑535 mg KOH/g, moisture content below 0.1%, and minimum total diamine purity hits 95%.
Unlike solid curing agents, Dimethyl thio-toluene diamine DMTDA stays liquid under ambient conditions, removing extra melting steps and dust hazards during production. It shows moderate curing speed, slower than DETDA, so formulators can adjust pot‑life flexibly by blending with other amine chain extenders. Final cured materials exhibit high tensile strength, remarkable tear resistance, good hydrolysis performance and stable heat resistance, suitable for harsh service conditions.
Available packaging includes 200 kg steel drums, 1000 kg IBC totes and ISO tanks for bulk delivery.
II. Main Industrial Applications
Dimethyl thio-toluene diamine plays a critical role across multiple downstream manufacturing sectors.
Primarily, it acts as chain extender for spray polyurea (SPUA) coatings and cast polyurethane elastomers, such as PU rollers, industrial wheels, casters and sealing gaskets. It fits Reaction Injection Molding (RIM) components for automotive and heavy‑duty machinery.
Besides PU & polyurea systems, Dimethyl thio-toluene diamine (DMTDA ) can also be used as epoxy curing agent for anti‑corrosion casting and electronic encapsulation. End‑products made with DMTDA cover mining wear‑resistant liners, construction waterproof membranes, textile calender rollers, high‑strength adhesives and sealants, where abrasion resistance, chemical stability and thermal performance are top priorities.
III. Market Focus: Russia, South Korea and Southeast Asia
Russian Market
Russia maintains stable consumption of DMTDA for polyurea waterproofing projects, mining wear-resistant components and heavy-duty PU elastomer production. Local end-users attach great importance to robust supply chains and complete import-compliant files including TDS, SDS and other required chemical documentation. Unilong supplies flexible packaging options like IBC totes and ISO tanks for large-volume imports, and we are well-acquainted with local chemical import formalities.
South Korean Market
South Korea has strong demand from high-end automotive parts, electronic protective coatings and premium industrial elastomer industries. Korean manufacturers enforce strict requirements on product purity, low impurity level and consistent batch quality. Our DMTDA meets high-precision formulation demands, supporting both small-scale trial lots and large-volume mass shipments.
Southeast Asian Market
Southeast Asia witnesses rapid expansion in infrastructure, automobile assembly and general industrial manufacturing, which fuels growing demand for polyurea and polyurethane raw materials. Vietnam, Thailand, Indonesia and Malaysia need large quantities of DMTDA for anti-corrosion building coatings, PU rollers and mechanical elastomer parts. Thanks to short sea transportation lanes, Unilong can deliver relatively short lead times with full-set export documents prepared.
IV. Conclusion
In short, DMTDA (CAS 106264-79-3) is an indispensable aromatic diamine chain extender for manufacturing high-performance polyurea and polyurethane articles.
Unilong Industry Co., Ltd is a genuine manufacturing factory rather than a pure trader. We implement strict in-house quality control to secure stable batch-to-batch performance. Both trial orders and bulk purchases are acceptable. Complete technical documents such as TDS and SDS are available on request. Customers from Russia, South Korea, Southeast Asia and worldwide are warmly welcome to send inquiries for samples, pricing and technical support.
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