Nuevos polímeros

• Main Authors: PANNIER, Gaelle, CHAI, Choon Kooi
• Format: Patent
• Language: Spanish
• Published: 19.09.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Un copolimero de etileno y un copolimero de α-olefina que tiene (a) una densidad en el intervalo de 0.900 - 0.940 g/cm3, (b) un indice de fusion MI2 (2.16 kg, 190 °C) en el intervalo de 0.01 a 50 g/10 min, (c) una distribucion del peso molecular (Mw/Mn, por GPC convencional) en el intervalo 2.0 -4.5, (d) un factor de particion de comonomero, Cpf> 1, y (e) un indice de fusion MI2 (2.16 kg, 190 °C) del indice Dow de reologia normalizado (DRI), [DRI/MI2] en el intervalo 3 - 20. Copolymers of ethylene and α-olefins having (a) a density in the range 0.900-0.940 g/cm3, (b) a melt index MI2 (2.16 kg, 190° C.) in the range 0.01-50 g/10 min, (c) a molecular weight distribution (Mw/Mn, by conventional GPC) in the range 2.0-4.5, (d) a comonomer partition factor, Cpf>1, and (e) a melt index MI2 (2.16 kg, 190° C.) normalized Dow Rheology Index (DRI), [DRI/MI2] in the range 3-20. The copolymers may be prepared using catalyst systems containing activating supports. The copolymers are suitably prepared in the gas phase preferably in a single reactor. The copolymers exhibit unique properties in particular with respect to their rheology.