公开(公告)号：US20220306848A1

公开(公告)日：2022-09-29

申请号：US17616854

申请日：2020-05-18

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： ROBERTO DE PALO ,  JAUME MARTI PORQUERES ,  RENAUD LEMAIRE ,  CLAUDIO CAVALIERI

IPC: C08L23/12 ,  B29C48/00

Abstract: A process for preparing fibers made from or containing propylene homopolymer having: a melting point ranging from 150° C. to 164° C.; a fraction soluble in xylene at 25° C. between 6.0 wt % and 2.0 wt %; a fraction soluble in acetone 25° C. between 0.5 wt % and 2.0 wt %; a ratio fraction soluble in xylene at 25° C./fraction soluble in acetone 25° C. between 0.30 and 0.60; a polydispersity index ranging from 2.8 to 4.5; and a melt flow rate (ISO 1133, 230° C./2.16 kg) between 2 to 40 g/10 min.

公开(公告)号：US20200165424A1

公开(公告)日：2020-05-28

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 ,  C08L23/14 ,  C08L23/08

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：US20220106717A1

公开(公告)日：2022-04-07

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: D04H1/44 ,  D04H1/4382 ,  D04H1/4291

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：US20220251745A1

公开(公告)日：2022-08-11

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

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.