Polyolefin compositions with improved mechanical and barrier properties

• Main Authors: Habert, Alberto Cláudio, Sakahara, Rogério Massanori, Mano, Bárbara Iria Silva, Grassi, Vinicius Galhard, Pereira, Cristina Cardoso, Fujiyama-Novak, Jane Hitomi, Amaral, Rafael Aislan, Garcia, Maria Elizabeth Ferreira, Stocker, Mariele Kaipers, Bueno, Marcos Roberto Paulino, Borges, Cristiano Piacsek, Farah, Marcelo
• Format: Patent
• Language: English
• Published: 07.09.2021
• 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

Polymer compositions may include a polymer matrix containing a polyolefin, one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles include a polar polymer selectively crosslinked with a crosslinking agent, and wherein the one or more polymer particles has an average particle size of up to 200 μm. Processes of preparing a polymer composition may include mixing a polyolefin, a polar polymer, and a crosslinking agent; and selectively crosslinking the polar polymer with the crosslinking agent in the presence of the polyolefin. Methods may include increasing stress cracking resistance of a polyolefin by mixing a polar polymer with the polyolefin; and selectively crosslinking the polar polymer in the presence of the polyolefin with a crosslinking agent to form crosslinked polar polymer particles dispersed in the polyolefin.