Polymer compositions comprising crystalline polymers and a stabilizer composition

• Main Authors: Young, Robert Erik, Peters, Mark Allen
• Format: Patent
• Language: English
• Published: 18.04.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

This invention relates to a polymer composition comprising:(A) at least one semi-crystalline polymer, and(B) a stabilizer composition comprising:(1) at least one primary antioxidant comprising at least one phenolic antioxidant; and(2) at least one secondary antioxidant comprising at least one phosphite, and(3) at least one chain extending agent;wherein the b* value for said polymer composition is less than 10 according to the L*, a* and b* color system of the CIE (International Commission on Illumination) after being heated for at least three hours at 200° C. or 24 hours at 175° C.