Aluminum catalyst PET resin with high recyclability

Aluminum-catalyst PET resin exhibits high thermal stability during melting, making it less susceptible to color changes and changes in physical properties caused by heat treatment during recycling. Therefore, it is suitable as a material for promoting material recycling.

In an experiment where heat treatment was carried out at 300°C for 2 hours under nitrogen substitution, it was confirmed that the aluminum-catalyst PET resin showed almost no thermal degradation and was able to maintain its transparency.

Conventional PET resin products have mainly been recycled for sheet and fiber applications, and the number of times they could be recycled was limited due to the effects of thermal degradation.

In contrast, highly recyclable aluminum-catalyst PET resin has high thermal stability, making it suitable for bottle recycling for products such as soft drink bottles, where good moldability and transparency are required. It also promotes bottle-to-bottle horizontal recycling.

Furthermore, since thermal degradation is less likely to occur even after repeated recycling, the number of possible recycling cycles is higher than that of conventional products, enabling more effective utilization of resources.