POLYMER RECYCLATE BLEND PRODUCTS

• Main Authors: Hundley, Mick C, Munj, Hrishikesh R, Zhang, Gang
• Format: Patent
• Language: English
• Published: 10.10.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Compositions comprising a mixture of a polymer recyclate and a compatibilizer are provided. The polymer recyclate comprises a first low polarity polymer having an oxygen vapor transmission rate (OVTR) greater than or equal to 800 cc·μm/m2·day·atm and a high polarity polymer, comprising at least one polar monomer and having an OVTR less than or equal to 200 cc·μm/m2·day·atm. The compatibilizer comprises a second low polarity polymer grafted with one or more functional groups. The mixture is subjected to compounding conditions to form a polymer product having a dispersed phase of domains of the high polarity polymer in a matrix phase of the first low polarity polymer. Methods for producing such compositions by recycling barrier films are also provided, wherein the barrier film comprises at least one layer of the first low polarity polymer and at least one layer comprising the high polarity polymer, as described above.