Polyethylene Naphthalate (PEN) Resin Teonex®
Introduction and Features
Polyethylene naphthalate (PEN) resin became popular in various fields after U.S. company Amoco Chemicals started commercial production of naphthalenedicarboxylic acid (NDC) , a raw material of PEN, in 1995. In 1964, 31 years before that, Teijin started development of PEN and commercialized as Teonex®. Since then, Teonex® has been popular as a functional material for industrial parts and wrapping materials for food and drugs, and still steadily increasing the area of applications. Teonex® is a crystalline thermoplastic polyester, a polycondensate of NDC as an acid component and ethylene glycol as a glycol component, manufactured in a process similar to that of polyethylene terephthalate (PET), a typical polyester. The property of Teonex® is considered superior to that of PET. Teonex® is crystalline resin, crystallized slowly, making it easier to shape transparent molded products. Teonex® has a superior chemical and scratch resistance compared to polycarbonate (PC) resin, a typical resin used in transparent molded products.
- 1.High transparency.
- 2.+50℃ of thermal resistance compared to PET.
- 3.Higher hydrolysis resistance and longer life than PET.
- 4.Higher chemical resistance than PET and PC.
- 5.Reduces the concern for contamination thanks to low levels of outgassing and adsorption of organic materials.
- 6.Absorbs ultraviolet radiation (up to 383nm) and protects contents inside.
Usage examples for application fields
- Returnable bottles
- Cosmetic containers
- Medical product containers
- Blending materials to improve PET performance (moisture barrier, gas barrier, heat resistance, UV ray absorption, etc.)
- Components that requires transparency, heat resistance, or chemical resistance
|Property||Unit||Measurement method||Measurement condition||Teonex®||PET||Panlite®|
|MVR||m3/10min||ISO 1133||300℃, 1.2kgf||18||5||-||8|
|Tensile modulus||MPa||ISO 527-1
|Tensile yield strength||MPa||50mm/min||80||80||58||61|
|Tensile yield strain||%||50mm/min||7||7||4||6|
|Tensile stress at break||MPa||50mm/min||38||40||28||75|
|Tensile strain at break||%||50mm/min||15||50||>200||>50|
|Flexural modulus||MPa||ISO 178||2mm/min||2,250||2,200||2,500||2,300|
|Charpy impact strength||kJ/m2||ISO 179||Un-notched||98||NB||NB||NB|
|Temperature of deflection under load||℃||ISO 75-1
|Rockwell hardness||-||ASTM D 785||M scale||107||107||80||67|
- Comply with the various notifications of Food Sanitation Act, and comply with the positive list of Japan Hygienic Olefin and Styrene Plastics Association.
- Grade TN8065S and TN8050SC comply with European Commission Regulation (EU) No 10/2011
- Crystalline properties
- Optical properties
- Pencil hardness test
- Frictional properties
- Chemical resistance
- Permeability to gases
- Mold shrinkage
- Flow properties
Design and molding
- Processing molded product