TPX MX004 – Transparent Heat-Resistant PMP Resin by Mitsui Chemicals

TPX MX004 is a transparent polymethylpentene (PMP) copolymer resin manufactured by Mitsui Chemicals, Inc. – the world‘s sole producer of TPX brand PMP resins. As an authorized distributor and trader, we supply genuine material with full traceability and direct access to official Mitsui Chemicals technical documentation. For more product options and company information, please visit our website at https://szrqchem.com/.

TPX is a crystalline polyolefin made from 4-methylpentene-1, produced by Mitsui Chemicals’ special technology of molecular design and catalyst. TPX MX004 is a medium modulus, low density, heat resistant polymethylpentene that offers an exceptional combination of properties:

• Excellent transparency equivalent to glass and acrylic (94% light transmittance)

• Lowest density among thermoplastic polymers – only 0.833 g/cm³

• Superior releasability – higher than other resins

• Excellent chemical & steam resistance – high durability against acid, alkali and alcohol

• Low refractive index (1.462) equivalent to fluororesin

• High gas permeability – suitable for hollow fiber and gas separation applications

TPX MX004 is certified for food packaging materials by Japan Hygienic Olefin and Styrene Plastics Association (JHOSPA) and United States Code of Federal Regulations Title 21 (FDA).

Recommended for injection molding and extrusion processing by T-Die casting, profile, mandrel and pipe. It is also applicable for processing by direct blow molding and extrusion by fiber spinning.

Key Features of TPX MX004

• Lowest Specific Gravity Among Plastics – Density of only 0.833 g/cm³ – one of the lightest polymer materials among thermoplastics

• Superior Optical Clarity – Light transmittance of 94% with haze as low as 0.7%; refractive index of 1.462

• High Heat Resistance – Melting point of 227-228°C; Vicat softening point of 164°C; DTUL @ 66 psi of 100°C

• Medium Modulus / Balanced Rigidity – Flexural modulus of 750-810 MPa; tensile modulus of 1,300 MPa

• Excellent Release Properties – Superior releasability, higher than other resins; low surface tension prevents sticking and contamination

• Excellent Chemical & Steam Resistance – High durability against acid, alkali and alcohol

• Excellent Electrical Properties – Volume resistivity >10¹⁶ Ω·cm; dielectric constant of 2.14 at 1MHz

• High Gas Permeability – Exhibits high gas permeability, suitable for hollow fiber and gas separation applications

• Low Refractive Index – Refractive index of 1.462 equivalent to fluororesin

• FDA Compliant – Certified for food contact applications per FDA 21 CFR

• Halogen-Free – Environmentally-friendly material

• Versatile Processing – Suitable for injection molding, extrusion, blow molding, and fiber spinning

• UL 94 HB – UL 94 flammability rating of HB

Typical Applications for TPX MX004

Material Advantages

TPX MX004 is a high-performance transparent resin that delivers:

• Lightest Thermoplastic – With a density of only 0.833 g/cm³, TPX MX004 significantly reduces part weight compared to PC, PMMA, or glass

• Exceptional Clarity – 94% light transmittance rivals PMMA while offering superior heat resistance and chemical resistance

• Superior Releasability – Higher than other resins, simplifying releasing tasks and reducing cleaning downtime

• Excellent Chemical Resistance – Strong against acids, alkalis, and alcohol; stable C-C bonds provide better chemical resistance compared to PC/PMMA materials

• FDA Compliance – Approved for food contact, enabling use in food packaging and food processing applications

• Design Flexibility – Can be processed by injection molding, extrusion, blow molding, and fiber spinning

• Excellent Electrical Insulation – Low dielectric constant (2.14 at 1MHz) and high volume resistivity (>10¹⁶ Ω·cm)

• Proven Reliability – Manufactured by Mitsui Chemicals, the world‘s sole producer of TPX resins

• Environmental Friendliness – Halogen-free polymer

Typical Properties

Important Notes on Typical Data:

• Values listed are typical and sourced from Mitsui Chemicals official data sheets. They do not constitute binding product specification.

• Batch-to-batch deviations may exist. For critical applications, validate performance with batch-specific COA certificate.

• Final performance depends on processing conditions, mold design, and part geometry.

• Mitsui Chemicals official TDS shall serve as definitive technical reference. Request the latest official TDS from our sales team.

Processing Guidelines

Critical Processing Warnings:

• Drying: TPX MX004 is not hygroscopic and typically does not require drying. If moisture is a concern, dry at 80-100°C for 2-3 hours.

• Recommended Processing: Recommended for injection molding and extrusion processing by T-Die casting, profile, mandrel and pipe. Also applicable for direct blow molding and fiber spinning.

• Gate Design: Pin gate is the most suitable for TPX molds due to excellent flowability. Avoid large gates that can cause residual stress and gate cracks.

• Cooling: Sufficient and well-balanced cooling channels are essential due to TPX‘s crystalline nature and larger shrinkage compared to amorphous polymers.

• Surface Finish: Highly polished mold surface is recommended for excellent transparency.

• Shrinkage: Mold design should account for higher shrinkage (MD: 1.7%, TD: 1.4%). Off-center gates are recommended to prevent warpage.

• Regrind: Regrind can be used up to 20-30% with virgin material, provided it is clean and properly dried.

Related Products

• Explore TPX Transparent Resins – Browse all TPX resin options

• Explore Engineering Plastics – Browse all engineering plastic materials

• About Our Company – Learn more about our supply capabilities and quality assurance

Technical Documents

Request any document above by:

• Email: ruiqingchem@gmail.com

• Online form: Our contact page

We reply within one working business day. Please clearly state product (TPX MX004) and document type you require.

FAQ

Q1: What is TPX MX004 and what is it used for?
A: TPX MX004 is a medium modulus, low density, transparent polymethylpentene (PMP) resin manufactured by Mitsui Chemicals. It combines excellent transparency equivalent to glass and acrylic (94% light transmittance), high heat resistance, superior releasability, and excellent chemical resistance. It is widely used in FPC release films, rubber hose mandrels/sheaths, LED molds, hollow fiber, food containers, and medical/laboratory equipment.

Q2: Is TPX MX004 FDA compliant?
A: Yes. TPX MX004 is certified for food packaging materials by United States Code of Federal Regulations Title 21 (FDA) and Japan Hygienic Olefin and Styrene Plastics Association (JHOSPA).

Q3: What is the density of TPX MX004?
A: The density is 0.833 g/cm³, making it one of the lightest polymer materials among thermoplastics.

Q4: What is the light transmittance of TPX MX004?
A: The light transmittance is 94% with haze of only 0.7%.

Q5: What is the melting point of TPX MX004?
A: The melting point is 227-228°C.

Q6: What processing methods can be used for TPX MX004?
A: TPX MX004 is recommended for injection molding and extrusion processing by T-Die casting, profile, mandrel and pipe. It is also applicable for direct blow molding and fiber spinning.

Q7: What is the MFR of TPX MX004?
A: The Melt Flow Rate is 25 g/10min at 260°C, 5kg.

Q8: What are the key advantages of TPX MX004?
A: Key advantages include low density (0.833 g/cm³), high transparency (94%), high heat resistance (MP 227-228°C), superior releasability, excellent chemical & steam resistance, FDA compliance, medium modulus balanced rigidity, low refractive index, and high gas permeability.

Q9: What is the lead time for orders?
A: Regular orders ship within 7-10 working days after payment confirmation. Large-volume or urgent orders can be negotiated separately.

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Sample Policy:

• Samples are for laboratory validation tests only, not for production use.

• Buyer bears international sample-shipping freight.

• If bulk-product performance deviates from sample reference, Mitsui Chemicals official TDS serves as the authoritative benchmark.

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Disclaimer

DISCLAIMER: All technical data is referenced from original Mitsui Chemicals typical values for TPX MX004. Our company acts as authorized distributor/trader rather than original manufacturer. Final performance depends on processing conditions, mold design, and part geometry. Buyers shall independently validate product suitability for individual applications. Our firm bears no liability for product failure caused by improper processing or improper usage. Always reference the latest Mitsui Chemicals official TDS of TPX MX004 as the definitive specification.