Chitec Technology announced that its novel UV blocker, Chiguard GA403, received a Taiwanese patent on 01/01/2020 (patent number: I680975). The patent reviews of Chiguard GA403 for other countries are also proceeding smoothly.
Chiguard GA403 (GA403) is a novel UV blocker derived from vanillin. It has a remarkably high absorption in the UVA wavelength region, making it suitable for optical applications requiring blue light absorbance. GA403 can block blue light up to 405 nm at 1500 ppm loading in a 1 mm thick PET film. For PET food package applications, GA403 achieved zero migration in migration tests with 10% ethanol, 3% acetic acid, and plant oil, respectively. The melting point of GA403 is 203 oC, but it is thermally stable over 350 oC (TGA 10% loss), which is suitable for use in PET, PC, PA, PMMA, and PE plastics. GA403 can be broadly applied in fields such as optical film/boards, food packaging, and UV-resistant functional fabrics.