THERMOPLASTIC POLYOLEFIN BLENDS INCLUDING BLOCK COMPOSITES AS COMPATIBILIZERS

• Main Authors: HENSCHKE, Olaf, JELTSCH, Krischan, OHMURA, Takahiko, MING, Ming, ZHANG, Yahong, WU, Hang, LI, Wei, HU, Yushan
• Format: Patent
• Language: English; French; German
• Published: 20.03.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A composition comprising (A) from 10 wt% to 90 wt% of a propylene component including at least one propylene based polymer having a propylene content of at least 50.0 wt%, based on the total weight of the propylene based polymer, and a melt flow rate from 0.5 g/10 min to 200.0 g/10 min (ASTM D-1238 at 230°C, 2.16 kg); (B) from 1 wt% to 60 wt% of a polyolefin elastomer; (C) from 1 wt% to 20 wt% of a block composite comprising (i) an ethylene-propylene copolymer, (ii) an isotactic polypropylene copolymer, and (iii) a block copolymer including an ethylene-propylene soft block that has a same composition as the ethylene-propylene copolymer of the block composite and an isotactic polypropylene hard block that has a same composition as the isotactic polypropylene copolymer of the block composite; and (D) optionally, from 0.1 wt% to 10 wt% of an antioxidant.