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
Asia’s polybutylene terephthalate (PBT) market is expected to continue facing a supply overhang amid lacklustre demand in the second quarter of 2014. This outlook has resulted in bearish sentiment among market players.
Many buyers are expecting softer prices in the near term on the back of earlier price declines in upstream markets such as butanediol (BDO) and purified terephthalic acid (PTA) sectors. However, some market participants said trade might be hampered as sellers are holding firmly to their selling ideas to prevent incurring greater losses from sluggish demand.
The depreciation of the Chinese yuan against the US dollar in recent weeks has further impacted trading sentiment. Some market participants also spoke of upcoming new plant start-ups in China, which are expected to increase the supply overhang. As a result, weak market sentiment is expected to continue plaguing the Asian PBT market into the second quarter.
Updated to mid-April 2014
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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.