Mitsui TAFMER DF840 Impact Modifier

Features Of Mitsui TAFMER DF840 Impact Modifier

1. Excellent optical properties with high transparency and low haze, meeting the appearance and use requirements of transparent products, suitable for food packaging, transparent accessories and other scenarios

2. Brittleness temperature as low as -70°C, excellent impact resistance in low temperature environment, maintaining flexibility and elasticity in a wide temperature range without embrittlement failure

3. Significant toughening effect on PP/PE polyolefin substrates, which can greatly improve the impact resistance and softness of substrates with strong modification adaptability

4. Good melt fluidity with a melt flow index of 3.6g/10min, high-efficiency molding for injection molding, extrusion and blow molding with high processing efficiency

5. Outstanding chemical corrosion resistance and weather resistance, able to resist the erosion of complex chemical media, UV and oxidation resistance for outdoor use with a long service life

Typical Applications Of Mitsui TAFMER DF840 Impact Modifier

1. Automotive parts such as bumpers and instrument panels, with low temperature resistance and impact resistance, both flexibility and structural strength, improving the safety of vehicle use

2. PP/PE polyolefin modification and toughening, as a special toughener, improving the brittleness of substrates and expanding the application scenarios of products such as pipes and containers

3. Food packaging films/containers, high transparency and chemical resistance, complying with food contact safety standards, balancing display and use safety

4. Cable sheaths and insulating materials for electronic and electrical appliances, with stable weather resistance and electrical performance, suitable for insulation protection needs of indoor and outdoor wiring

5. Daily necessities such as toys and sports equipment, soft, high elastic and impact resistant, safe to use, improving the holding and use experience of products

Specifications Of Mitsui TAFMER DF840 Impact Modifier

Mitsui TAFMER DF840 Impact Modifier – Frequently Asked Questions (FAQ)

Q1: What is the primary function of TAFMER DF840 in polymer formulations?

A: TAFMER DF840 is an ethylene–alpha-olefin copolymer impact modifier designed to enhance toughness, low-temperature impact resistance, and flexibility in rigid polypropylene (PP) and polyethylene (PE)-based systems—particularly in thin-wall packaging, automotive interior parts, and medical containers where balanced stiffness and ductility are critical.

Q2: How does TAFMER DF840 differ from conventional EPDM or EBA impact modifiers?

A: Unlike traditional elastomeric modifiers, TAFMER DF840 offers superior dispersion in polyolefin matrices due to its narrow molecular weight distribution and tailored polarity. This enables finer phase morphology, improved interfacial adhesion, and more consistent mechanical performance—especially in high-shear processing like injection molding or extrusion blow molding.

Q3: Is TAFMER DF840 suitable for food-contact or medical-grade applications?

A: TAFMER DF840 is manufactured under strict quality control and is widely used in food packaging and medical device components where regulatory compliance is required. Final suitability depends on the full formulation, processing conditions, and end-use regulatory evaluation—users should consult Mitsui Chemicals’ technical documentation and perform appropriate migration and biocompatibility testing as part of their qualification process.

Q4: What processing methods are recommended for optimal performance with TAFMER DF840?

A: TAFMER DF840 performs well in standard polyolefin processing equipment, including injection molding, extrusion, and blow molding. It exhibits good thermal stability and melt flow characteristics, enabling efficient incorporation at typical processing temperatures (200–240 °C). Pre-drying is generally not required, though handling in low-humidity environments is recommended to maintain consistent feeding and dispersion.

Q5: How should TAFMER DF840 be incorporated into a base resin?

A: TAFMER DF840 is typically introduced via masterbatch or direct dry-blend addition. For best results, it is recommended to use high-shear mixing during compounding to ensure uniform dispersion. Dosage depends on formulation requirements but generally ranges from 0.1% to 2% by weight in PP-based systems—optimization should be guided by mechanical testing and application-specific performance targets.