Poly(26-dimethyl-14-phenylene oxide) also known as poly(phenylene ether) (PPE) or polyphenylene oxide (PPO) is used in the manufacture of engineering plastics electrical and electronic components automotive parts and various industrial applications.

The purpose of Poly(26-dimethyl-14-phenylene oxide) is to provide a high-performance polymer material with good thermal stability dimensional stability electrical insulating properties and resistance to moisture and chemicals.

It is commonly used alone or blended with other polymers such as polystyrene to improve mechanical thermal and processing properties in engineering applications.