Patents Assigned to PolyOne—Shanghai, China
  • Composition for protecting beta-carotene
    Patent number: 10087304
    Abstract: A composition to protect beta-carotene from visible light photo-oxidation is disclosed. The composition uses a combination of a quinophthalone dye, a pyrazolone dye, and a methine dye to protect the beta-carotene from visible light in the range of 400-500 nm.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: October 2, 2018
    Assignee: PolyOne—Shanghai, China
    Inventors: Ling Zhu, Gang Li, Wenyu Shang