ETHYLENE COPOLYMER WITH IMPROVED ELASTICITY AND PROCESSIBILITY

• Main Authors: JUNG, HYUN WOOK, OH, SE WON, KWON, SEUNG BUM, HAM, HYEONG TAEK, CHAE, SUNG SEOK
• Format: Patent
• Language: English; French
• Published: 18.05.2012
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; 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; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

Provided is an ethylene copolymer with improved elasticity and processibility. More specifically, provided is an ethylene copolymer which exhibits a high zero shear viscosity and a large degree of shear thinning degree, and shows rheological characteristics behaviors differentiated from products manufactured by using the existing metallocene and Ziegler-Natta catalysts. In addition, provided is an ethylene copolymer which has a low processing load, shows differentiated behavior in Van-Gurp Palmen analysis, and exhibits excellent Neck-in characteristics. L'invention concerne un copolymère de l'éthylène ayant une élasticité améliorée et une aptitude améliorée à la mise en oeuvre. Plus particulièrement, l'invention concerne un copolymère de l'éthylène qui présente une viscosité de cisaillement zéro élevée et un important degré de fluidisation par cisaillement, et présente des comportements de caractéristiques rhéologiques qui se différencient des produits fabriqués à l'aide des catalyseurs métallocènes et Ziegler-Natta existants. En outre, l'invention concerne un copolymère de l'éthylène qui a une faible charge de traitement, présente un comportement différencié dans une analyse de Van-Gurp Palmen et présente d'excellentes caractéristiques de rétraction.