PBT polymerization Technology

Poly (terephthalic acid) butyl diol ester , the English name Polybutylene terephthalate (PBT), belonging to the polyester series, is made from 1.4 butyl alcohol (1.4-butylene glycol) and terephthalic acid (PTA) or terephthalic acid ester (DMT) esterification, For milky translucent to opaque, crystalline thermoplastic Polyester resin 。 Together with pet collectively referred to as thermoplastic polyester, or saturated polyester.

Device Introduction:

Continuous PBT Equipment: The use of three-kettle process, PTA routes, capacity of 30-500 tons/day, Advantage: Low temperature, low molar ratio, mild reaction , low consumption, energy saving, melt fluidity is good, Maintain reasonable material consumption at different reaction stages ；

Intermittent PBT device: Using two-kettle process, PTA or DMT route, capacity of 3-40 tons/day, advantages: Catalysts and additives can be added at low temperatures, The esterification is continuous feeding at low temperature or normal reaction temperature, which is easy to control and safe and reliable.

THF recovery device: The use of filler tower for recycling, the purity of up to 99.99%.