公开(公告)号：US12049713B2

公开(公告)日：2024-07-30

申请号：US17312280

申请日：2019-12-17

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Roberto De Palo ,  Gianluca Musacchi ,  Renaud Lemaire ,  Jaume Marti Porqueres

IPC: D01F8/06 ,  C08L23/12 ,  C08L23/14 ,  C08L23/20 ,  D01F6/46 ,  D04H1/4291 ,  D04H1/4382

CPC classification number: D01F8/06 ,  C08L23/12 ,  C08L23/142 ,  C08L23/20 ,  D01F6/46 ,  D04H1/4291 ,  D04H1/43828 ,  D04H1/43832 ,  C08L2203/12 ,  C08L2205/025 ,  C08L2205/03 ,  D10B2321/022

Abstract: A polyolefin composition for preparing fibers, made from or containing:



A) 60-95% by weight of a propylene homo- or copolymer; and
B) 5-40% by weight of a copolymer of butene-1 or a butene-1 polymer composition having:

a Melt Flow Rate value of from 5 to 100 g/10 min., measured according to ISO 1133 at 190° C. with a load of 2.16 kg;
a copolymerized comonomer content from 4% to 15% by mole, referred to the total weight of B);
a Mw/Mn value equal to or lower than 4; and
flexural modulus of 80 MPa or higher.

公开(公告)号：US10767036B2

公开(公告)日：2020-09-08

申请号：US16629104

申请日：2018-06-20

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Monica Galvan ,  Claudio Cavalieri ,  Jaume Marti Porqueres ,  Renaud Lemaire ,  Roberto De Palo

IPC: C08L23/12 ,  C08L23/08 ,  C08L23/14

Abstract: A polyolefinic fiber made from or containing from 2 wt % to 20 wt % relative to the total weight of the fiber of a polyolefin 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 containing 25% by weight or less of a fraction soluble in xylene at 25° C.; 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.; 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.

公开(公告)号：US11814759B2

公开(公告)日：2023-11-14

申请号：US17617427

申请日：2020-05-26

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Roberto De Palo ,  Renaud Lemaire ,  Jaume Marti Porqueres

IPC: D04H1/4382

CPC classification number: D04H1/43828 ,  D10B2321/021 ,  D10B2321/022

Abstract: A skin-core fiber having

a skin of a propylene ethylene copolymer having:
i) xylene soluble fraction from 14 wt % to 27 wt %;
ii) intrinsic viscosity of the fraction soluble in xylene at 25° C. from 1.0 to 2.4 dl/g;
iii) melt flow rate, MFR, from 12 g/10 min to 60 g/10 min;
iv) an ethylene derived units content from 5.0 wt % to 12.0 wt %;
v) the ethylene derived units content of the fraction insoluble in xylene from 2.5 wt % to 6.0 wt %;
vi) the ethylene derived units content of the fraction soluble in xylene ranging from 15.2. wt % to 30.2 wt %;
vii) C13 NMR sequences PEP on the fraction insoluble in xylene from 3.5 mol % to 5.5 mol %; and
viii) C13 NMR sequences PEP on the fraction soluble in xylene from 11.0 mol % to 14.2 mol %; and
a core of a polyethylene having a density between 0.940 g/cm3 to 0.975 g/cm3.