PROPYLENE-ETHYLENE COPOLYMER RESIN COMPOSITION, AND MOLDED PRODUCT, FILM AND SHEET THEREOF

• Main Authors: MOTOKAZU TERADA, MASATO TAKAYAMA, IKU KOUZAI, KUNINORI TAKAHASHI, SATOSHI KATSUNO, SHINICHIROU YAJIMA
• Format: Patent
• Language: English; Spanish
• Published: 09.03.2015
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

This propylene-ethylene copolymer resin composition is produced by a metallocene-based catalyst and comprises: 97-65 parts by weight of a propylene-based polymer (A) wherein (A-i) the ethylene content in the polymer (A) is 0-6.0 wt%, (A-ii) the MFR of the polymer (A) is 0.1-100 g/10 minutes, and (A-iii) Mw/Mn is 2-4; and 3-35 parts by weight of a propylene-ethylene copolymer (B) wherein (B-i) the ethylene content in the copolymer (B) is 0.4-13 wt%, and (B-ii) the MFR of the copolymer (B) is 0.5-20 g/10 minutes. The copolymer (B) comprises: 65-95 wt% of a propylene-based polymer component (B1) wherein (B1-i) the ethylene content in the polymer component (B1) is 0-6.0 wt%; and 5-35 wt% of a propylene-ethylene copolymer component (B2) wherein (B2-i) the ethylene content in the copolymer component (B2) is 8-25 wt%, and (B2-ii) the MFR of the copolymer component (B2) is 0.0001-0.5 g/10 minutes. Esta composición de resina de copolímero de propileno-etileno se produce por un catalizador a base de metaloceno y comprende: 97-65 partes en peso de un polímero (A) a base de propileno en donde (A-i) el contenido de etileno en el polímero (A) es de 0-6.0% en peso, (A-ii) el MFR del polímero (A) es de 0.1-100 g/10 minutos, y (A-iii) Mw/Mn es 2-4; y 3-35 partes en peso de un copolímero de propileno-etileno (B) en donde (B-i) el contenido de etileno en el copolímero (B) es de 0.4-13% en peso, y (B-ii) el MFR del copolímero (B) es de 0.5-20 g/10 minutos. El copolímero (B) comprende: 65-95% en peso de un componente de polímero a base de propileno (B1) en donde (B1-i) el contenido de etileno en el componente de polímero (B1) es de 0-6.0% en peso; y 5-35% en peso de un componente de copolímero de propileno-etileno (B2) en donde (B2-i) el contenido de etileno en el componente de copolímero (B2) es de 8-25% en peso, y (B2-ii) el MFR del componente de copolímero (B2) es de 0.0001-0.5 g/10 minutos.