公开(公告)号：US20230332335A1

公开(公告)日：2023-10-19

申请号：US18338570

申请日：2023-06-21

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Bin Zhao ,  Abigail I. Agentis

IPC: D01F8/06 ,  C08F210/06 ,  D04H3/005 ,  D04H3/16

CPC classification number: D01F8/06 ,  C08F210/06 ,  D04H3/005 ,  D04H3/16 ,  D10B2401/041

Abstract: A bicomponent fiber comprising a sheath, where the sheath includes a propylene-based elastomer, said propylene-based elastomer including propylene-derived units and from about 3.0 to about 15 wt% alpha-olefin-derived units other than propylene-derived units, based upon the entire weight of the copolymer, said propylene-based elastomer having a triad tacticity of greater than 75%, and a heat of fusion, as determined by DSC, of less than 75 J/g; and a core, where the melt temperature of the core, as determined by DSC, is at least 5% greater than the melt temperature of the sheath.

公开(公告)号：US20240011198A1

公开(公告)日：2024-01-11

申请号：US18252095

申请日：2021-10-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Paul E. Rollin, JR. ,  Syamal S. Tallury ,  Simone De Vita ,  Victor Boudara ,  Abigail I. Agentis ,  Alicia Tejerizo Fuertes

IPC: D01F8/10 ,  D01F8/06 ,  D01D5/32

CPC classification number: D01F8/10 ,  D01F8/06 ,  D01D5/32 ,  D10B2321/021 ,  D10B2321/022 ,  D10B2401/04 ,  D10B2401/06

Abstract: A multicomponent fiber for nonwovens and methods for making and using same. The multicomponent fiber can include a first component comprising a first polypropylene having a MFR of at least 30 dg/min and a second polypropylene having a MFR of less than 20 dg/min. The multicomponent fiber can further include a second component comprising the first polypropylene and at least one propylene-based elastomer comprising propylene and about 10 wt % to about 30 wt % of one or more alpha-olefin derived units, based on a total weight of the elastomer, wherein the propylene-based elastomer has a MFR of at least 40 dg/min and a heat of fusion (Hi) of about 3 J/g to about 75 J/g, as determined by DSC.

公开(公告)号：US20200071855A1

公开(公告)日：2020-03-05

申请号：US16540239

申请日：2019-08-14

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Bin Zhao ,  Abigail I. Agentis

IPC: D01F8/06 ,  C08F210/06 ,  D04H3/16 ,  D04H3/005

Abstract: A bicomponent fiber comprising a sheath, where the sheath includes a propylene-based elastomer, said propylene-based elastomer including propylene-derived units and from about 3.0 to about 15 wt % alpha-olefin-derived units other than propylene-derived units, based upon the entire weight of the copolymer, said propylene-based elastomer having a triad tacticity of greater than 75%, and a heat of fusion, as determined by DSC, of less than 75 J/g; and a core, where the melt temperature of the core, as determined by DSC, is at least 5% greater than the melt temperature of the sheath.