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Additional recommended knowledge
It is better known as TPX® from Mitsui Chemicals, Inc. which is a 4-methyl-1-pentene based linear isotactic polyolefin and is made by Ziegler-Natta type catalysis. The commercially available grades are usually copolymers. It can be extruded and molded (by injection molding or blow molding).
It has a very low density (0.83 g·cm³), is transparent and colorless. Its properties are reasonably similar to those of other polyolefins although it is more brittle and more gas permeable. Therefore it is often used in films and coatings for gas permeable packaging
Given its higher melting point (≈ 240 °C) and good temperature stability, it is no surprise that polymethylpentene is used for (autoclavable) medical and laboratory applications and in microwave components or cookware.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Polymethylpentene". A list of authors is available in Wikipedia.|