Bimodal Series

Asahi Kasei's DELPET™ Bimodal series is a methacrylic resin with both high fluidity and solvent resistance. It is used in tail lights and other large components.

Bimodal Series

High fluidity enables molding of large products

The DELPET™ Bimodal series is characterized by its bimodal molecular weight distribution. This characteristic allows it to maintain mechanical strength as well as high fluidity, making it possible to mold large-sized parts. It also has high solvent resistance, preventing cracking and roughness after molding.

Bimodal series details

Bimodal series features

Heat resistance, optical properties, and weather resistance equivalent to general grades

It can be molded at a lower temperature than conventional materials, making it possible to shorten the molding cycle.

High fluidity makes it excellent for injection molding

Excellent solvent resistance, and resistant to cracking and roughness after molding

Bimodal Series molecular weight data

* The property value is a representative value and not a guaranteed value.

1) Heat resistance, optical properties and weather resistance equivalent to general grades.
2) A molding material with excellent fluidity during injection molding.
3) Since it can be molded at low temperature, it can be expected to shorten the molding cycle and improve solvent resistance.
4) We have a wide lineup of products, from high fluidity to solvent resistant grades.

Bimodal grade molecular weight distribution

Bimodal series applications

Tail lights of a car

Food containers (beer pitchers, soy sauce bags, measuring cups)

Vehicle emblems

Meter covers

Bimodal series physical properties

* The property value is a representative value and not a guaranteed value.

Physical property items Test method Unit Grade name
80NE 80NEN 80EB
High fluidity Good fluidity Solvent resistance
1. Flow characteristics Melt flow-rate (230°C､37.3N) 1133 g/10min 1.8 1.0 0.6
Spiral length (wall thickness: 2mm, resin temperature: 250°C, mold temperature: 60°C, resin pressure: 75MPa) Asahi Kasei PMMA method cm 33 30 27
2. Mechanical Properties Tensile modulus 527-1/1A/1 MPa 3300 3300 3300
Tensile breaking stress 527-1/1A/5 MPa 77 77 77
Tensile failure strain 527-1/1A/5 % 5 7 8
Bending elastic modulus 178 MPa 3300 3300 3300
Bending strength 178 MPa 130 130 130
Charpy impact strength without notch 179/1eU kJ/m2 22 24 24
Charpy impact strength notched 179/1eA kJ/m2 1.3 1.4 1.4
3. Thermal Properties Deflection temperature under load（1.8MPa） 75-1,2 °C 100 98 98
Vicat softening temperature 306B50 °C 109 107 107
4. Other Properties Water absorption (23°C, 24hr) 62method1 % 0.3 0.3 0.3
Density 1183 g/cm3 1.19 1.19 1.19
Refractive index 489 - 1.49 1.49 1.49
Total light transmittance 13468-1 % 92 92 92
Rockwell hardness M scale 2039-2 - 100 98 95
Mold shrinkage Asahi Kasei PMMA method % 0.2~0.6 0.2~0.6 0.2~0.6

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