Basic information
TCPP is a chlorinated phosphate flame retardant, usually used for rigid polyurethane foam (PUR and PIR) and flexible polyurethane foam. TCPP is a phosphate ester that combines phosphorus and chlorine, so it has excellent flame retardant and plasticizing properties for plastics and rubber products. This product has been widely used as a flame retardant at home and abroad for PVC and polyurethane soft and rigid foams. , Cellulose acetate, nitrocellulose paint, ethyl fiber paint and flame-retardant rubber, rubber conveyor belt. The resulting product has self-extinguishing properties, weather resistance, cold resistance, antistatic properties, soft hand feeling, and the general addition amount is 5-10 parts. Polyurethane rigid foam oxygen index (LOI) can reach 26. In addition, it can also be used as a special pressure additive for lubricating oil, as an additive for auto paint and a thermal coolant for magnesium metal.
Product raw materials and production process
(1) Using phosphorus oxychloride and epichlorohydrin as raw materials, a mixture of tris(2,3-dichloropropyl) phosphate is obtained under the catalysis of AlCl3.
(2) Add lye to the mixed solution and wash it until it is neutral, statically separate and remove the water layer; wash the oil layer and then statically separate again, remove the water layer, and distill the oil layer to obtain liquid tris(2,3-diphosphate) Chloropropyl) ester, and then pass nitrogen gas into it for purification. The preparation process of this process is simple, the prepared tris(2,3-dichloropropyl) phosphate has high purity compared with the existing production process, and its quality detection result is obviously better than that produced by the production process in the prior art Tris (2,3-dichloropropyl) phosphate.