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Color durability and saturation in plastics

IP.com Disclosure Number: IPCOM000005232D
Publication Date: 2001-Aug-17

Publishing Venue

The IP.com Prior Art Database


Color durability and saturation are attributes often difficult to simultaneously achieve in plastics. Many engineered thermoplastic resin applications require pigments capable of providing both excellent durability and high chroma. However, many chromatic colorants exhibit poor lightfastness and thermal stability. A relatively new family of inorganic pigments based on cerium sulfide achieves these conditions and more. Cerium sulfide pigments are lightfast, chromatic, heat stable. In addition, cerium sulfide pigments do not negatively influence physical properties of the polymer. Cerium sulfide pigments have been successfully used in many thermoplastics such as polyolefins, nylon, and polycarbonate.