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 Q2 2015
The Asian polybutylene terephthalate (PBT) spot market is poised to remain stable-to-firm in the second quarter of 2015, as the seasonal peak demand period in northeast Asia during April to May is expected to lend support to prices.
However, expectations of significant upward price movement remained curbed by declines in upstream crude oil values seen in mid-March, which led to drops in the spot values of PBT’s feedstock, purified terephthalic acid (PTA). Furthermore, the Asian market remained amply supplied with PBT, resulting in expectations of limited impact from improved demand.
Meanwhile, in the Indian market, demand is likely to rise following the end of the fiscal year on 31 March. Market sources believe that India-based importers would be more willing to commit to fixtures and discussions with the beginning of the new fiscal year.
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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.