Mitsui Chemicals TPX

Manufacturers and trade names Mitsui Chemicals TPX , Opulent , Honeywell PMP Chevron Philips Crystalor—discontinued. 

Figure 7.43 Flexural modulus vs. temperature for Mitsui Chemicals TPX RT18— general-purpose, unfilled PMP resin.

Mitsui Chemicals, Properties of standard TPX grades, [electronic ] http //www.mitsuichemicals.com/tpx phy.htm, 2009. 

Figure 7.46 Dielectric constant vs. frequency at 20°C for Mitsui Chemicals FR-TPX T130—30% chopped glass filled PMP resin.

Poly(4-methylpentene-1) n (PMP) A polyolefin first introduced commercially in 1966 by Imperial Chemical Industries but now produced only by Mitsui Plastics ( TPX ) and Phillips 66 C., ( Crystalor ). The monomer, 4-methylpentene-l, is produced by dimerization of... 

Other polymers with properties similar to those of picarin include a copolymer of norbornene and ethylene (NEC), which has a transmission of about 90% (for a 2 mm-thick sample) in the frequency range between 0.2 and 1.2THz [111], and poly(4-methyl pentene-1) (TPX Mitsui Chemicals). The latter is transparent at UV, visible and far-IR frequencies [112]. The chemical structures of the base units of these polymers are provided in Chart 2.13. 

TPX Mitsui Petrochemical Industries, Ltd. s tradename for its family of polymethylpentene plastic, tracer A foreign substance, usually radioactive, that is mixed with or attached to plastic material so its distribution or location can later be determined. It is used as a trace chemical to determine behavior of the plastic melt flow through plasticators, molds, and dies. Also called a tracer element or accessory element. See reinforced-plastic prepreg tracer. 

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