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US 10,472,509 B2Granted
High flow TPO composition with excellent balance in mechanical properties for automotive interior
AssigneeBorealis AG
InventorsGeorg Grestenberger, Martina Sandholzer
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Abstract
The present invention is directed to a heterophasic propylene copolymer (HECO), a polyolefin composition (PO) comprising the heterophasic propylene copolymer (HECO), an automotive article comprising the heterophasic propylene copolymer (HECO) and/or the polyolefin composition (PO) and a process for the preparation of the polyolefin composition (PO) as well as the use of the heterophasic propylene copolymer (HECO) for improving the mechanical properties of a polyolefin composition (PO).
Claims11
A heterophasic propylene copolymer (HECO) comprising:
- a) a propylene homopolymer (HPP) having a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 100 to 200 g/10 min, and
- b) an elastomeric propylene-ethylene copolymer (E), wherein the heterophasic propylene copolymer (HECO)
- (i) has a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 15 to 35 g/10 min,
- (ii) comprises a xylene cold soluble (XCS) fraction in an amount from 26 to 36 wt. %, based on the total weight of the heterophasic propylene copolymer (HECO),wherein further the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO) has
- (iii) an intrinsic viscosity (IV) measured according to DIN ISO 1628/1 in the range of 2.8 to 3.8 dl/g, and
- (iv) an ethylene content (EC) of 35 to 50 wt. % based on the total weight of the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO), and
- wherein xylene cold soluble (XCS) fraction is unimodal with respect to the ethylene content (EC) and/or unimodal with respect to the molecular weight distribution (MWD).
4 more elements
Dependencies are inferred from the claim text.