Plasticizers for plastic raw materials

Plasticizers is a high boiling point and low volatility of the material. Its molecular structure has polar and non-polar parts. Plasticizer molecules can be inserted between the polymer chains to weaken the intermolecular forces and increase the distance and space between the molecular chains of polymers, as well as increase polymer plastic and reduce the processing temperature of the polymer.

Several of main chemical raw materials to manufacture plasticizers are follows:

O-phthalic acid esters is the most widely used plasticizer. Currently, the production of O-phthalic acid esters is about accounted for 80% of total plasticizer. As the full performance, it general are used as main plasticizer. DOP, DIOP, DIDP, DBP, etc are the common used O-phthalic acid esters, while the use of DOP is most wide and production is also maximum.



1 DOP The plasticizer Di-n-Octyl phthalate is colorless or light yellow oil-like liquid. It is not dissolved in water and can used in most organic solvent and hydrocarbon class. This plasticizer has a good compatibility with PVC, chlorine-vinegar resin, polystyrene, methyl acrylic acid methyl ester and and cellulose. Due to its excellent plasticizing efficiency, small volatile and migration, cold resistance, resistant to UV light, water resistance, soft and electric performance, it mainly used for Plasticized of PVC, fiber, etc.

2 DBP Dibutyl phthalate is colorless oily liquid without visible impurities, with aromatic smell, soluble in diethyl ether, alcohol and other oil compatibility. DBP is a commonly used plasticizer. It is also used as an additive to adhesives or printing inks. It is also used as an ectoparasiticide. By the way, it soluble in most organic solvents and hydrocarbons.

3 DIOP It is transparent oil-like viscous liquid, insoluble in water, but can dissolved into most organic solvent. It has good compatible property with nitric acid fiber, ethyl cellulose, PVC, chlorine-vinegar resin, etc. Small toxicity and better light and hot stability, but the plasticizing efficiency, electrical properties, low temperature flexibility and non-volatile is slightly poorer than DOP. DIOP can be DOP alternative, as well as used as main plasticizer of PVC, vinyl chloride copolymers, fiber plastic resin and so on.

4 DIDP It can be dissolved in alcohol, ketone and ether. Compatibility with nitric acid fiber, ethyl cellulose, PVC and chlorine-vinegar resin is good. It's available for vinyl base resin and fiber plastic resin of main plasticizer. The products plasticized by this chemical, the soft changes small with temperature. It especially suitable for wire and cable sheath, thin model for agricultural use and so on. When it used for plastic pots can improve its liquidity, viscosity changes small when in the storage. If you have interest in plastic raw materials, please click here!

Source: https://www.okchem.com/news/plasticizers-plastic-raw-materials.html