Diisononyl phthalate (DINP)：This product is a transparent oily liquid with a slight odor. It is a versatile main plasticizer with excellent properties. This product is soluble in PVC, and will not precipitate even if used in large quantities. Volatilization, migration and non-toxicity are better than DOP (dioctyl phthalate), which can give the product good light resistance, heat resistance, aging resistance and electrical insulation properties, and the comprehensive performance is better than DOP. Because the products produced by this product have good water resistance and extraction resistance, low toxicity, aging resistance, excellent electrical insulation performance, so it is widely used in toy film, wire, cable.
Compared with DOP, the molecular weight is larger and longer, so it has better aging performance, resistance to migration, anticairy performance, and higher high temperature resistance. Correspondingly, under the same conditions, the plasticization effect of DINP is slightly worse than DOP. It is generally believed that DINP is more environmentally friendly than DOP.
DINP has superiority in improving extrusion benefits. Under the typical extrusion processing conditions, DINP can reduce the melting viscosity of the mixture than DOP, which helps reduce the pressure of the port model, reduce mechanical wear or increase the productivity (up to 21%). There is no need to change the product formula and production process, no additional investment, no additional energy consumption, and maintaining product quality.
DINP is normally oily liquid, insoluble in water. Generally transported by tankers, small batch of iron buckets or special plastic barrels.
One of the main raw materials of DINP -INA (INA), currently only a few companies in the world can produce, such as the United States’ Exxon Mobil, Germany’s winning company, Japan’s Concord Company, and South Asian company in Taiwan. At present, no domestic company produces INA. All manufacturers who produce DINP in China are all required to come from imports.