- Patent Title: Thermoplastic polyolefin containing amorphous ethylene elastomer
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Application No.: US16793075Application Date: 2020-02-18
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Publication No.: US11104784B2Publication Date: 2021-08-31
- Inventor: Sudhin Datta , Xin Chen , Abdul M. Jangda , Rohan A. Hule , Jan Kalfus
- Applicant: ExxonMobil Chemical Patents Inc.
- Applicant Address: US TX Baytown
- Assignee: ExxonMobil Chemical Patents Inc.
- Current Assignee: ExxonMobil Chemical Patents Inc.
- Current Assignee Address: US TX Baytown
- Main IPC: C08L23/14
- IPC: C08L23/14 ; C08L23/12

Abstract:
Disclosed is a thermoplastic polyolefin composition useful in automotive components comprising at least a polypropylene having a melting point temperature (Tm) of greater than 130° C. and a melt flow rate (230° C./2.16 kg) within the range from 10 g/10 min to 80 g/10 min; an amorphous ethylene-propylene copolymer comprising within the range from 40 wt % to 80 wt % ethylene derived units and having a melt flow rate (230° C./2.16 kg) within the range from 0.1 g/10 min to 20 g/10 min; and a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a Tm of less than 110° C. The composition only partially breaks or there is no break at −29° C. (ASTM D256) with Notched Izod Force of between 10 to 40 ft-lb/in2 at 22° C. (533 to 2,132 J/m2), and between 1.0 to 12 ft-lb/in2 at −29° C. (53 to 636 J/m2).
Public/Granted literature
- US20200239677A1 Thermoplastic Polyolefin Containing Amorphous Ethylene Elastomer Public/Granted day:2020-07-30
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