TDI is the abbreviation of toluene diisocyanate. TDI is a polycyanate widely used in industrial production. It is a polyurethane material and an important basic material. Mainly used to make flexible polyurethane foam, polyurethane elastomer, coatings, adhesives, etc.

How about the supply of toluene cyanic acid TDI (TDI)?

In recent years, my country's TDI output has increased year by year, reaching 897,600 tons in 2019, an increase of 13.98% over the previous year. The demand for TDI in 2019 is 80.92, and the demand in the Chinese market is 4.90%.

The upstream raw materials mainly include sulfuric acid, toluene, nitric acid, chlorine, xylene, tar, butyl acetate, and hydroxymethane. Our downstream products mainly include various downstream products, including polyurethane resin, anodic electrophoretic paint, polyurethane foam, water-soluble polyurethane, polyurethane coating, etc.

TDI is often used in the PU industry with 2,4-TDI and 2,6-TDI, including TDI-80/20, TDI-100, TDI-65/35. Among them, 2, 4-TDI is displayed in the first digit. For example, 80 in TDI-80/20 represents 80% of 2, 4-TDI, 20% of 2, 6-TDI, 100 represents 98% of 2, 4-TDI, and 2, There are very few alien species in 6-TDI.

TDI mainly appears in decorative coatings. Excessive free TDI can cause harm to the human body, mainly manifested as allergies and irritant reactions, causing eye pain, tearing, conjunctival congestion, coughing, chest tightness, shortness of breath, asthma, red papules, maculopapular rash, contact allergy, etc. The global free TDI limit standard does not exceed 0.5%. Toluene diisocyanate is a colorless or light yellow transparent liquid. Heating hydroxyl, water, amine and active hydrogen compounds in an alloy steel container can produce carbamate, urea, semicarbazide, biuret, etc.