公开(公告)号：US20250051973A1

公开(公告)日：2025-02-13

申请号：US18717910

申请日：2022-12-05

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Roberta Marchini ,  Gianni Perdomi ,  Gianluca Musacchi ,  Fabio Di Pietro

IPC: D01F8/06 ,  C08L23/12 ,  C08L23/20

Abstract: A stretched polyolefin filament, having elongation at break EB of equal to or higher than 80% and a ratio SR/EB, where SR is the stretching ratio, of equal to or lower than 45, made from or containing: a polyolefin composition (I), made from or containing A) from 40% to 78% by weight of a propylene polymer; B) from 22% to 60% by weight of a butene-1 polymer having: 1) a flexural modulus value from 100 to 800 MPa; 2) a ratio MI10/MI2 of from 20 to 40; and 3) a content of fraction soluble in xylene at 0° C. of 15% by weight or lower; wherein the amounts of A) and B) are referred to the total weight of A)+B).

公开(公告)号：US20250043464A1

公开(公告)日：2025-02-06

申请号：US18717886

申请日：2022-12-05

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Roberta Marchini ,  Gianni Perdomi ,  Gianluca Musacchi ,  Fabio Di Pietro

IPC: D01F6/06 ,  C08L23/12

Abstract: A stretched polyolefin filament, having elongation at break EB of equal to or higher than 90% and a ratio SR/EB, where SR is the stretching ratio, of equal to or lower than 75, made from or containing: a polyolefin composition (I), made from or containing A) from 80% to 95% by weight of a propylene polymer; B) from 5% to 20% by weight of a butene-1 polymer having: 1) a flexural modulus value from 100 to 800 MPa; 2) a ratio MI10/MI2 of from 20 to 40; and 3) a content of fraction soluble in xylene at 0° C. of 15% by weight or lower; wherein the amounts of A) and B) are referred to the total weight of A)+B).

公开(公告)号：US20230383103A1

公开(公告)日：2023-11-30

申请号：US18032778

申请日：2021-10-11

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Gianluca Musacchi ,  Roberta Marchini ,  Fabio Di Pietro

IPC: C08L23/04

CPC classification number: C08L23/04 ,  C08L2201/52 ,  C08L2207/066 ,  C08L2205/02

Abstract: A polyolefin composition made from or containing:



A) from 88% to 99% by weight of an ethylene polymer having MIP of equal to or higher than 5 g/10 min, where MIP is the melt flow index at 190° C. with a load of 5 kg, determined according to 1133-2:2011; and
B) from 1% to 12% by weight of a butene-1 polymer having MIE of equal to or higher than 800 g/10 min., where MIE is the melt flow index at 190° C. with a load of 2.16 kg, determined according to 1133-2:2011;
wherein the amounts of A) and B) are referred to the total weight of A)+B).