Polyacetal (POM) and polybutylene terephthalate (PBT) are covered under the Engineering Plastics umbrella.
POM is a crystalline plastic often used for technical applications due to its strength, ductility (ability to be drawn into threads without breaking) and good machinability. Its properties make it suitable for click connections (e.g. bicycle lamp holders). The material is known for its stiffness, strength and hardness up to 120ºC, and is as elastic as many metals. It is wear resistant and has a very low friction coefficient. The colour is opaque white, and carbon black can be added to protect the product from UV-light.
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.
ICIS pricing quotes engineering plastics in
Frequency:
Published weekly on Tuesdays.
Engineering Plastics (
Weekly Price Assessments:
Polyacetal Contract Prices
Polybutylene terephthalate Contract Prices
General Information:
Assessment window: Assessments are based on information supplied by market participants through the week to close of business on Tuesdays at 1700 hours in
Specifications: POM prices are assessed for natural grade material. PBT is assessed for filled, unfilled and flame retardant product grades.
Timing: Loading within the current quarter.
Terms: Contractual terms negotiated between the suppliers and the buyers.
Standard cargo size: The quotes are based on truck loads of 20-25 tonnes.
Assessment basis: Contracts are settled on a quarterly basis for both POM and PBT, and the quotes for both products reflect settlements between buyers and sellers at the beginning of the three-month period in
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