Polyethylene Naphthalate (PEN) Resin Teonex®
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