DMTDA CAS 106264-79-3 is a new type of polyurethane elastomer curing crosslinking agent, which mainly consists of a mixture of two isomers, 2,4- and 2,6-dimethylthiotoluene diamine (with a ratio of approximately 77-80/17-20). Compared with the commonly used MOCA, DMTDA is a liquid with lower viscosity at room temperature and can be suitable for construction operations at low temperatures, with advantages such as low chemical equivalence.

Chinese name: Dimethylthiotoluene diamine (DMTDA)

Chinese synonym: 2,4-diamino-3,5-dimethylthiotoluene; Dimethylthiotoluene diamine (DMTDA); 4-methyl-2,5-bis (methylthio) benzene-1,3-diamine; 2,4-diamino-3,6-dimethylbenzo [thioaldehyde; 2,4-diamino-3,5-dimethylthiotoluene (DMTDA)

English name: Dimethylthio toluenediamine

Synonyms in English: DiMethylthiotoluenediaMine (DMTDA, E-300); 2,4-Dimino-3,5-dimethylthioluene; Dimethyl thio toluenediamine; DADMT; 1,3-Benzenediamine, 2 (or4) – methyl-4,6 (or2,6) – bis (methylthio) -; Ethanure300; ETHACURE; 2 (or4) – Methyl-4,6 (or2,6) – bis (methylthio) -1,3-benzenediamine

CAS number: 106264-79-3

Molecular formula: C9H12N2S

Molecular weight: 214.36

EINECS number: 403-240-8

The main uses 

1. It is a new liquid curing agent for polyurethane elastomers, widely used in polyurethane casting, coatings, RIM, SPUA, polyurethane tires, and adhesives for chain extension or cross-linking, and is also a curing agent for epoxy resins.

2. As a hardener, when added to TDI and MTDI liquid polyurethane elastomers, it must be added at a rate of 10%. In the construction and civil engineering industries, it is often used as an additive for fireproof coatings (top and side walls), anti-corrosion of metal materials (coatings on the inner walls of iron pipes), and other aspects. Polyurethane products that can react with other substances without any treatment are superior to MOCA (Mocha) hardener products.

3. Used for polyurethane printing adhesive scraper, oil pipe cleaning scraper, etc., to improve the oil resistance of polyurethane and have a low volume expansion rate.

4. In addition to building, coal mining, metal mining, medicine, stamping and other fields, it is widely used in the textile, papermaking, and printing industries. It can be said that from aviation and aerospace industries to ordinary civilian industries, it has a broad market.

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