公开(公告)号：US20230323048A1

公开(公告)日：2023-10-12

申请号：US18041631

申请日：2021-09-07

Applicant: Dow Global Technologies LLC

Inventor： Jingya Li ,  Lihua Chen ,  Xilun Weng ,  Changkan Zheng

IPC: C08L23/06 ,  C08J5/18 ,  C08J3/20

CPC classification number: C08J5/18 ,  C08J3/203 ,  C08L23/06 ,  C08J2323/06 ,  C08J2423/08

Abstract: Provided are breathable films and a process for making breathable films. The breathable films comprise a filler and a polymer blend comprising a polyolefin and ethylene copolymer. The process for making the breathable films comprise extruding a polymer blend and a filler, forming a film from the extruded polymer blend and filler, and stretching the film to form a breathable film. The breathable films according to embodiments disclosed herein can exhibit increased WVTR values and can reduce filler dropping while providing improved micro-void uniformity.

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.