US 12,344,732 B2
Scratch resistant polyolefin composition
Monica Galvan, Ferrara (IT); Michele Grazzi, Ferrara (IT); Claudio Cavalieri, Ferrara (IT); and Mikhail Sergeevich Dureev, Butzbach (DE)
Assigned to Basell Poliolefine Italia S.r.l., Milan (IT)
Appl. No. 17/641,226
Filed by BASELL POLIOLEFINE ITALIA S.R.L., Milan (IT)
PCT Filed Aug. 28, 2020, PCT No. PCT/EP2020/074047
§ 371(c)(1), (2) Date Mar. 8, 2022,
PCT Pub. No. WO2021/047920, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 19196862 (EP), filed on Sep. 12, 2019.
Prior Publication US 2022/0348751 A1, Nov. 3, 2022
Int. Cl. C08L 23/14 (2006.01); C08F 10/06 (2006.01); C08L 23/12 (2006.01)
CPC C08L 23/14 (2013.01) [C08F 10/06 (2013.01); C08L 23/12 (2013.01); C08L 23/142 (2013.01); C08L 2205/025 (2013.01); C08L 2205/035 (2013.01); C08L 2314/02 (2013.01)] 14 Claims
 
1. An injection molded article comprising:
a propylene-based composition comprising:
T1) from 90 wt % to 70 wt % based on a total weight of the propylene-based composition, of a propylene homopolymer having a fraction soluble in xylene at 25° C. lower than 6 wt % and having a melt flow rate (measured according to ISO 1133-1 2011 230° C./2.16 kg) between 1.0 to 80.0 g/10 min; and
T2) from 10 wt % to 30 wt % based on the total weight of the propylene-based composition, of a polymer composition comprising:
A) 5-35% by weight, based on a total weight of component T2, of a propylene homopolymer or a propylene ethylene copolymer containing 90% by weight or more of propylene units; wherein component A) containing 10% by weight or less of a fraction soluble in xylene at 25° C. (XSA), both the amount of propylene units and of the fraction XSA being referred to the weight of A);
B) 20-50% by weight; based on the total weight of component T2, of a copolymer of ethylene and a C3-C8 alpha-olefin containing from 0.1% to 20% by weight of C3-C8 alpha-olefin units and containing 25% by weight or less; of a fraction soluble in xylene at 25° C. (XSB), both the amount of C3-C8 alpha-olefin units and of the fraction XSB being referred to the weight of (B); and
C) 30-60% by weight, based on the total weight of component T2, of a copolymer of ethylene and propylene containing from 25% to 75% by weight of ethylene units and containing from 40% to 95% by weight of a fraction soluble in xylene at 25° C. (XSC), both the amount of ethylene units and of the fraction XSC being referred to the weight of (C);
the amounts of (A), (B) and (C) being referred to the total weight of (A)+(B)+(C), the sum of the amount of (A)+(B)+(C) being 100 wt %, based on the total weight of component T2; and
the sum of the amounts of components T1 and T2 being 100 wt %, based on the total weight of the propylene-based composition.