[Resin Nazenaze Series] Regarding Yellowing in Dark Places

The color changes in the dark! Here’s an introduction to why it takes on a yellowish hue even though it’s unopened.

Dark storage yellowing refers to the discoloration that occurs when using ABS that has been stored unopened for a long time. When comparing ABS colored products produced immediately after manufacturing with those that have been stored unopened for two years, the white ones showed a yellowish discoloration after two years. This phenomenon was also observed in other colored products, such as light blue. In relation to this phenomenon, we suggest that colored materials be used as soon as possible and that long-term storage be avoided. **Causes of Dark Storage Yellowing** - The B (butadiene rubber) in ABS deteriorates and discolors to yellow over time. - Additives contained in ABS (antioxidants, flame retardants) can cause the material to undergo chemical changes and yellow when stored in the dark for extended periods. *For more details, please refer to the PDF document or feel free to contact us.*

Technical Seminar