Thermoplastic vulcanizate composition, method of producing the same, and articles made therefrom

• Main Authors: SUN SAM YABIN, HUGHES MORGAN, PAEGLIS ARNIS, TAI XIANGYANG, MARCHAND GARY ROBERT
• Format: Patent
• Language: Chinese; English
• Published: 20.11.2013
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

A thermoplastic vulcanizate composition comprising from 5 wt% to 95 wt%, based on the total weight of the thermoplastic vulcanizate composition, of a first component comprising a first propylene-based polymer selected from the group consisting of (i) propylene/a-olefin copolymers comprising from 1 to 20 wt% a-olefin and characterized by a g' ratio of less than 1, measured at interpolymer number average molecular weight (Mn), an MFR (2.16kg @ 230 DEG C) greater than or equal to 0.01, a density greater than or equal to 0.850 g/cc, and a molecular weight distribution, Mw/Mn, less than or equal to 3.5, and (ii) combinations thereof; and from 5 wt% to 95 wt%, based on the total weight of the thermoplastic vulcanizate composition, of a second component selected from the group consisting of curable or vulcanizable rubbers, having a density from 0.85 to 0.88 g/cc, I2 from 0.001 to 5 g/10 min, and a Mooney viscosity from 5 to 400, and combinations thereof; wherein at least one of the rubbers is vulcanizable; wherein t