Dimethylthiotoluenediamine-DMTDA is a novel crosslinking agent cured polyurethane elastomer, which is equivalent to Ethancure 300 there are two isomers i.e., 2,4- and 2,6-dimethyl thio toluene amine mixtures (ratio is about 77 to 80/17 to 20), compared with the MOCA commonly used at room temperature is low viscosity liquid can be applied to construction operations, the use of chemical equivalents and low at low temperatures. DMTDA is an environmentally friendly low toxicity of the liquid type diamine chain extenders, mainly for polyurethane elastomers, RIM (reaction injection molding), SPUA (spray polyurea elastomer) and adhesives; also be used as an epoxy resin a curing agent, has been widely used in polyurethane rubber roller, medical, stamping, etc. in addition, it is in the automotive, construction, mining, metal mining, textile, paper, printing industry are widely used. DMTDA curing speed much slower than DETDA can be mixed in different proportions with DETDA used to adjust the curing speed to meet different needs.
Dimethyl Thio-Toluene Diamine (DMTDA) physical properties of curing agents of polyurethane elastomer: the physical properties of the prepolymer, including polyester and polyether type, with DMTDA cured, and cured compared with MOCA; as with MOCA curing systems, pre Physical properties of the cured polymer ideal ratio is sensitive, DMTDA curing agent compared with MOCA, to stoichiometric exhibit acceptable deviation stoichiometric low (80-90%) is usually obtained as helpful maximum permanent deformation resistance to compression rate, and high stoichiometry (100-105%) helps to get the maximum value such as tear strength and fatigue life. For best results when most uses is 95% of the ideal ratio. (DMTDA curing conditions (temperature and time) and MOCA similar, but more emphasis needs DMTDA secondary vulcanization conditions to obtain optimum physical properties, particularly compression set and dynamic mechanical properties.
Dimethylthiotoluenediamine -DMTDA Advantages
Dimethylthiotoluenediamine -DMTDA is a novel crosslinking agent cured polyurethane elastomer, which is equivalent to Ethancure 300 there are two isomers i.e., 2,4- and 2,6-dimethyl thio toluene amine mixtures (ratio is about 77 to 80/17 to 20), compared with the MOCA commonly used at room temperature is low viscosity liquid can be applied to construction operations, the use of chemical equivalents and low at low temperatures. DMTDA is an environmentally friendly low toxicity of the liquid type diamine chain extenders, mainly for polyurethane elastomers, RIM (reaction injection molding), SPUA (spray polyurea elastomer) and adhesives; also be used as an epoxy resin a curing agent, has been widely used in polyurethane rubber roller, medical, stamping, etc. in addition, it is in the automotive, construction, mining, metal mining, textile, paper, printing industry are widely used. DMTDA curing speed much slower than DETDA can be mixed in different proportions with DETDA used to adjust the curing speed to meet different needs.
1, dimethylthiotoluenediamine -DMTDA sterically hindered aromatic diamine, methylthio and steric hindrance of the methyl group makes its activity is lower than TDA and DETDA, it and prepolymer reaction rate than DETDA extended 5 -9 times.
2, dimethylthiotoluenediamine -DMTDA higher activity than MOCA using dimethylthiotoluenediamine -DMTDA cured pouring time is shorter than in MOCA prepolymer NOC low content, for production workers to operate and improve production efficiency is more appropriate.
3, the curing temperature can be lowered to room temperature (preheating temperature may range from 25 degrees to 100 degrees adjustment)
4, low equivalent weight of 107 (MOCA 133.5), the amount of the prepolymer cured with low consumption cost reduction.
5, synthetic PU (polyurethane) performance and alkali resistance than MOCA cured product, an injectable elastomer better.
6, the high temperature will be required when MOCA curing volatile carcinogen, while DMTDA in use at room temperature is not volatile carcinogen, is an internationally recognized environment-friendly chain extender (curing agent).
7, compared with the traditional curing agent MOCA, dimethylthiotoluenediamine -DMTDA has many advantages: a liquid at room temperature, easy to use, can be cured at room temperature; the mechanical properties of the cured with MOCA comparable compared with similar foreign products , basically the same physical and mechanical properties, lower prices, reduce product costs, so this product is an ideal substitute for traditional curing agent.
Dimethyl Thio-Toluene Diamine (DMTDA) Raw Materials:
Toluene Diamine (TDA) And Dimethyl Disulfide (DMDS)
Dimethyl Thio-Toluene Diamine (DMTDA) Export Cargo Security Data
CAS No.:106264-79-3
Hs: 29309090.90
Hazard Class: 9
Un: 3082
Packing: net weight 200KG / galvanized iron (a small cabinet loaded 16 tons a child care), 1000KG / IB barrel (a small cabinet loaded 18 tons) or 23 tons ISOTANK.