Polybutylene terephthalate Prices, markets & analysis
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Polybutylene Terephthalate Overview Transcript
Polyacetal or POM and polybutylene terephthalate also known as PBT are covered under the engineering plastics umbrella.
POM is a crystalline plastic often used for technical applications due to its strength, ductility and good machineability. Its properties make it suitable for click connections, for example, with bicycle light holders. The material is known for its stiffness, strength and hardness up to 120 degrees Celsius, and is as elastic as many metals. It is wear-resistant and has a very low friction coefficient.
PBT is a semi-crystalline white or off-white polyester similar in composition and properties to polyethylene terephthalate, though it has slightly lower strength and stiffness. PBT is softer, but it has higher impact strength and very similar chemical resistance. It is usually preferred for industrial-scale moulding because it has quicker crystallisation. It is widely used in electronic, electrical communication fibre optic and automotive industry.
The cost of feedstock methanol influences the POM price. The PBT price is highly influenced by the raw material costs of dimethyl terephthalate and butane diol.
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Polybutylene terephthalate: Market overview
Updated to Q3 2014
Going forward into the third quarter, Asia's polybutylene terephthalate (PBT) spot market is expected to remain impacted by persistent bearish sentiment, existing oversupply and lacklustre demand.
These factors are also expected to curtail significant spot price increase, but firm selling ideas maintained by regional producers because of squeezed margins would likely lead to price stability. Demand from China will most likely remain lacklustre on limited market stimulus, whereas India's spot demand is expected to decline further with the annual monsoon season from July.
The frequent flooding that the monsoon season brings will likely cap import sentiment, and weigh on spot trading volumes. Some Indian and northeast Asian buyers said that they would rely mainly on contractual volumes for downstream requirements, amid uncertainty over near-term price trends.
On the supply front, there are limited plans for any new facilities in the region for the third quarter.
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Polybutylene terephthalate or PBT is a semi-crystalline, white or off-white polyester similar in both composition and properties to polyethylene terephthalate (PET). It has slightly lower strength and stiffness than PET. PBT is softer, but it has higher impact strength and very similar chemical resistance. It is usually preferred for industrial scale moulding due to quicker crystallising. It is widely used in electronic, electrical, communications, fibre optics and automotive industries.
About Polybutylene terephthalate
Polybutylene terephthalate (PBT) is included in the engineering plastics umbrella.
PBT is a thermoplastic polyester resin that has good impact strength, heat resistance and flow properties. It has many automotive applications such as mirror housings, fans, fuse boxes, cowl vents, and motor and ignition system components.
It also has uses in electrical and electronic products such as connectors, chip sockets, terminal boards, switches and circuit breakers.