PEROXIDE TREATED METALLOCENE-BASED POLYOLEFINS WITH IMPROVED MELT STRENGTH

• Main Authors: ROHATI, VIVEK, CUI, LILI, SUKHADIA, ASHISH M
• Format: Patent
• Language: English; French
• Published: 20.11.2014
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin. La présente invention concerne des polymères à base d'éthylène présentant une faible densité et une distribution étroite des masses moléculaires, mais une grande résistance à la fusion, et utilisables dans le cadre du traitement de feuilles soufflées. Lesdits polymères peuvent être produits par traitement au peroxyde d'une résine catalysée par un métallocène.