Scratch resistant polyolefin composition
AssigneeBasell Poliolefine Italia S.r.l.
InventorsMonica Galvan, Michele Grazzi, Claudio Cavalieri, Mikhail Sergeevich Dureev
Life of this patent
Estimating the term…
Abstract
An injection molded article made from or containing a propylene-based composition made from or containing: T1) from 90 wt % to 50 wt % of a propylene homopolymer; and T2) from 10 wt % to 50 wt % of a polymer composition made from or containing A) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer; B) 20-50% by weight of a copolymer of ethylene and a C3-C8 alpha-olefin containing from 0.1% to 20% by weight of alpha-olefin units; and C) 30-60% by weight of a copolymer of ethylene and propylene containing from 25% to 75% by weight of ethylene units.
Claims14
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.
Dependencies are inferred from the claim text.