ELASTIC PROPYLENE-ETHYLENE COPOLYMER AND ITS PRODUCTION METHOD

PROBLEM TO BE SOLVED: To provide an elastic propylene-ethylene copolymer having a specific stereoregularity that can be used for various molded articles having very good flexibility, little stickiness, excellent heat resistance and transparency, and excellent elastic-recovering properties, as well a...

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Hauptverfasser:	SHIODA TSUTOMU, HACHIMAN GOJI, OKI YOSHIYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an elastic propylene-ethylene copolymer having a specific stereoregularity that can be used for various molded articles having very good flexibility, little stickiness, excellent heat resistance and transparency, and excellent elastic-recovering properties, as well as excellent low-temperature properties. SOLUTION: This propylene-ethylene copolymer comprises 0.01-15 mol% of an ethylene unit and 99.99-85 mol% of a propylene unit, based on the mole number of the olefin units constituting the copolymer, wherein the following properties, (A), (B), (C) and (D) are satisfied: (A) 0.0070×C2-0.0020>PEP; (B) 0.01+EPE/(EPE+PPE+PPP)