US 11,929,192 B2
Polyolefin composition for cable insulation
Cindy Flenniken, Houston, TX (US); Chun D. Lee, Houston, TX (US); Claudio Cavalieri, Ferrara (IT); Monica Galvan, Ferrara (IT); Vincent Baudier, Brussels (BE); and Gisella Biondini, Ferrara (IT)
Assigned to Basell Poliolefine Italia S.r.l., Milan (IT)
Appl. No. 16/965,794
Filed by BASELL POLIOLEFINE ITALIA S.R.L., Milan (IT)
PCT Filed Jan. 21, 2019, PCT No. PCT/EP2019/051323
§ 371(c)(1), (2) Date Jul. 29, 2020,
PCT Pub. No. WO2019/149549, PCT Pub. Date Aug. 8, 2019.
Claims priority of provisional application 62/625,870, filed on Feb. 2, 2018.
Claims priority of application No. 18155038 (EP), filed on Feb. 5, 2018.
Prior Publication US 2021/0074447 A1, Mar. 11, 2021
Int. Cl. H01B 3/44 (2006.01); C08K 5/14 (2006.01); C08L 23/08 (2006.01); C08L 23/12 (2006.01); C08L 23/14 (2006.01)
CPC H01B 3/441 (2013.01) [C08K 5/14 (2013.01); C08L 23/0815 (2013.01); C08L 23/0853 (2013.01); C08L 23/0869 (2013.01); C08L 23/0892 (2013.01); C08L 23/12 (2013.01); C08L 23/14 (2013.01); C08L 2203/20 (2013.01)] 10 Claims
 
1. A cable article comprising:
a polyolefin composition comprising
from 20.0 wt % to 80.0 wt % of component T1) being an interpolymer of ethylene and less than 7 wt %, of a polymerizable comonomer selected from the group consisting of unsaturated esters and hydrolyzable silane monomers;
from 0.5 wt % to 5.0 wt % of a peroxide; and
from 20.0 wt % to 80.0 wt % of component T2) comprising
A) 5-35% by weight of a propylene homopolymer containing 5% by weight or less of a fraction soluble in xylene at 25° C. (XSA), or a propylene ethylene copolymer containing 90% by weight or more of propylene units; 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; of a copolymer of ethylene and a C3-C8 alpha-olefin containing from 0.1% to 20% by weight of alpha-olefin units and containing 25% by weight or less; of a fraction soluble in xylene at 25° C. (XSB), both the amount of alpha-olefin units and of the fraction XSB being referred to the weight of (B); and
C) 30-60% by weight 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,
wherein the cable article is selected from the group consisting of cable insulation and cable jacketing.