公开(公告)号：US12104284B2

公开(公告)日：2024-10-01

申请号：US17293202

申请日：2019-11-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Yinglong Chen ,  Akanksha Garg ,  Yijian Lin ,  Sanjib Biswas ,  Jeffrey D. Weinhold ,  Pavan Kumar Valavala ,  Fabricio Arteaga Larios ,  Jill Martin ,  Didem Oner-Deliormanli ,  Mehmet Demirors

IPC: D01D5/32 ,  C08F10/06 ,  C08F210/16 ,  D01D5/22 ,  D01F8/06

CPC classification number: D01D5/32 ,  C08F10/06 ,  C08F210/16 ,  D01D5/22 ,  D01F8/06 ,  C08F2500/05 ,  C08F2500/12 ,  C08F210/16 ,  C08F4/64193 ,  C08F210/16 ,  C08F2/001 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/05 ,  C08F2500/10 ,  C08F2500/12

Abstract: Disclosed is a curly fiber having a fiber centroid and comprising a first region having a first centroid and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition in an amount of at least 75 weight percent based on total weight of the first region and wherein the ethylene/alpha olefin interpolymer composition is characterized by a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C. and the second region is a material comprising a polymer which is different from the ethylene/alpha-olefin interpolymer of the first region and wherein the regions are arranged such that at least one of the first centroid and the second centroid is not the same as the fiber centroid.

公开(公告)号：US12006593B2

公开(公告)日：2024-06-11

申请号：US17295070

申请日：2019-11-20

Applicant: Dow Global Technologies LLC

Inventor： Akanksha Garg ,  Yinglong Chen ,  Yijian Lin ,  Sanjib Biswas ,  Pavan Kumar Valavala ,  Fabricio Arteaga Larios ,  Jill Martin

IPC: D01D5/22 ,  D01D5/30 ,  D01F8/06 ,  D04H1/4291 ,  D04H1/435 ,  D04H1/4382

CPC classification number: D01D5/22 ,  D01D5/30 ,  D01F8/06 ,  D04H1/4291 ,  D04H1/435 ,  D04H1/43835 ,  D10B2321/022 ,  D10B2331/04 ,  D10B2401/06

Abstract: A process comprising forming fibers having at least a first region and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition characterized by: density in the range of 0.930 to 0.965 g/cm3; melt index (I2) in the range of from 10 to 60 g/10 minutes; molecular weight distribution in the range of from 1.5 to 2.6; tan delta at 1 radian/second of at least 45; a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure; and full width at half maximum of the high temperature peak is less than 6.0° C. and stretching the fibers to an elongation of at least 20% thereby increasing curl of the fiber. The process may further include forming a non-woven from the fibers and the stretching of the fibers may occur before or after forming of the non-woven.

公开(公告)号：US20230272567A1

公开(公告)日：2023-08-31

申请号：US17997615

申请日：2021-05-05

Applicant: Dow Global Technologies LLC

Inventor： Akanksha Garg ,  Yijian Lin ,  Aleksandar Stoiljkovic ,  Jozef J.I. Van Dun ,  Fabricio Arteaga Larios ,  Rajesh P. Paradkar

IPC: D04H3/007 ,  D01F8/06 ,  D01D5/34 ,  D04H3/16

CPC classification number: D04H3/007 ,  D01F8/06 ,  D01D5/34 ,  D04H3/16 ,  D10B2321/021

Abstract: Provided are bicomponent fibers with improved curvature. The bicomponent fiber comprises a first region and a second region. The first region comprises a first polyethylene composition and second region comprises a second polyethylene composition, wherein the first polyethylene composition has a crystallization temperature (Tc) greater than a crystallization temperature (Tc) of the second polyethylene composition. The bicomponent fiber can be used to form a nonwoven.

公开(公告)号：US20230257920A1

公开(公告)日：2023-08-17

申请号：US18040860

申请日：2020-08-21

Applicant: Dow Global Technologies LLC

Inventor： Xin Huang ,  Yunfeng Yang ,  Shijie Ren ,  Yijian Lin ,  Haiyang Yu ,  Jingya Li

IPC: D04H3/16 ,  D04H3/018 ,  D04H3/147 ,  B01D39/16

CPC classification number: D04H3/16 ,  D04H3/018 ,  D04H3/147 ,  B01D39/1623 ,  B01D2239/0622 ,  B01D2239/1233

Abstract: Provided are meltblown nonwovens, and articles thereof. The meltblown nonwovens can be formed form a composition comprising an ethylene/alpha-olefin interpolymer and specific additive. The meltblown nonwovens according to embodiments disclosed herein exhibit a high volume resistivity and can be used in filtration applications.

公开(公告)号：US11261544B2

公开(公告)日：2022-03-01

申请号：US16486521

申请日：2018-03-07

Applicant: Dow Global Technologies LLC

Inventor： Viraj Shah ,  Yijian Lin ,  Ronald Wevers ,  Rongjuan Cong ,  Mehmet Demirors

IPC: D01F6/30 ,  D04H1/56 ,  C08F210/16 ,  D01D5/34 ,  D01F8/06 ,  D04H1/4291 ,  D04H3/007 ,  D04H3/16

Abstract: An ethylene/alpha-olefin interpolymer suitable for use in fibers and nonwovens having a density of from 0.911 to 0.939 g/cc, a Brookfield viscosity of less than or equal to 50,000 cP, and a molecular weight distribution (Mw,cc/Mn,cc) of 1.8 to 3.5, and articles thereof.

公开(公告)号：US20220008893A1

公开(公告)日：2022-01-13

申请号：US17295264

申请日：2019-11-22

Applicant: Dow Global Technologies LLC

Inventor： Andrew T. Heitsch ,  Yijian Lin ,  Barbara Bonavoglia ,  Kyle E. Hart ,  Mehmet Demirors ,  Rou Hua Chou ,  Manoj Thota

IPC: B01J20/26 ,  B01J20/28 ,  B01J20/30 ,  A61L15/24

Abstract: A film includes 20.0 weight percent to 69.5 weight percent of a linear low density polyethylene (LLDPE) based polymer. The LLDPE having a high density fraction (HDF) from 3.0% to 8.0%, an I10/I2 ratio from 5.5 to 6.9, and a short chain branching distribution (SCBD) of less than or equal to 8.0° C. The film also includes 0.0 weight percent to 10.0 weight percent low density polyethylene (LDPE) based polymer, and 30.0 weight percent to 70.0 weight percent pore former.

公开(公告)号：US20200277474A1

公开(公告)日：2020-09-03

申请号：US16064267

申请日：2016-12-15

Applicant: Dow Global Technologies LLC

Inventor： Yijian Lin ,  Mridula Babli Kapur ,  David T. Gillespie ,  John L. Sugden ,  Todd A. Hogan

IPC: C08L23/06 ,  C08K5/00 ,  B29C49/00

Abstract: Polyethylene formulations, articles produced therefrom, and methods of making articles are provided. The polyethylene formulation includes a multimodal high density polyethylene (HDPE) composition, and 1 ppm to 10,000 ppm of a nucleating agent, wherein the multimodal HDPE composition comprises a density of 0.940 g/cm3 to 0.970 g/cm3 when measured according to ASTM D792, and a melt index (I2) of 0.01 g/10 min. to 1.0 g/10 min. when measured according to ASTM D1238 at 190° C. and a 2.16 kg load, and wherein the multimodal HDPE composition comprises an infrared cumulative detector fraction (CDFIR) of greater than 0.27 and an infrared cumulative detector fraction to light scattering cumulative detector fraction ratio (CDFIR/CDFLS) from 0.7 to 2.0.

公开(公告)号：US20200255608A1

公开(公告)日：2020-08-13

申请号：US16648556

申请日：2018-10-08

Applicant: Dow Global Technologies LLC

Inventor： Wu Aik Yee ,  Yijian Lin ,  Rajen M. Patel ,  Fabricio Arteaga Larios ,  Jacquelyn A. Degroot ,  Mridula Kapur ,  Yutaka Maehara

IPC: C08J5/18 ,  B32B38/00 ,  B32B5/02 ,  B32B27/12 ,  B32B27/32

Abstract: A uniaxially-oriented ethylene-based polymeric film having at least one layer comprising at least 65 wt. %, based on total amount of materials present in the at least one layer, of a linear low density polyethylene which exhibits each of the following properties: a CDBI of at least 60%; a melt index, 12, measured according to ASTM D 1238 (2.16 kg @190° C.), of 1.8 g/10 min to 10 g/10 min; a density of from 0.910 g/cc to 0.940 g/cc; and a Mw/Mn of less than 3.0.

公开(公告)号：US10457787B2

公开(公告)日：2019-10-29

申请号：US15302967

申请日：2014-04-09

Applicant: Dow Global Technologies LLC

Inventor： Yijian Lin ,  Mehmet Demirors ,  Jianping Pan ,  Xiao B. Yun

IPC: C08L23/06 ,  C08J5/18 ,  B32B27/32 ,  B32B27/08 ,  B32B27/20 ,  B32B27/16 ,  B29C48/08 ,  B29C48/21 ,  B29K23/00 ,  B29C48/00

Abstract: A first oriented film comprising a first polyethylene composition which comprises: from 20 to 50 wt % of a first linear low density polyethylene polymer having a density greater than 0.925 g/cc and an I2 lower than 2 g/10 min; and from 80 to 50 wt % of a second linear low density polyethylene polymer having a density lower than or equal to 0.925 g/cc and an I2 greater than or equal to 2 g/10 min; wherein the first polyethylene composition has an I2 from 0.5 to 10 g/10 min and a density from 0.910 to 0.940 g/cc is provided.

公开(公告)号：US20170342244A1

公开(公告)日：2017-11-30

申请号：US15534383

申请日：2015-11-05

Applicant: Dow Global Technologies LLC

Inventor： Stephanie M. Whited ,  Mridula Babli Kapur ,  Yijian Lin

IPC: C08L23/06

CPC classification number: C08L23/06 ,  C08L2205/025 ,  C08L2207/062

Abstract: A polyethylene composition suitable for use in a living hinge component, the composition comprising a first ethylene-based polymer component, the first ethylene-based polymer component has a density of from 0.91.5 g/cc to less than 0.940 g/cc. and a melt index, I2.16, of less than 5 g/10 min. and a second ethylene-based polymer component, wherein the composition has an overall density of from 0.945 g/cc to 0.960 g/cc and an overall melt index, I2.16, of from 5 g/10 min to 20 g/10 min.