公开(公告)号：WO2022040578A1

公开(公告)日：2022-02-24

申请号：PCT/US2021/046981

申请日：2021-08-20

Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC

Inventor： GOPAL, Vikram ,  DEAN, Natasha ,  ORTEGA, Albert ,  YUNG, Wai-shing ,  HAO, Ping

IPC: B01D39/16

Abstract: Provided herein are filter media structures having antimicrobial and/or antiviral properties. In particular, the present disclosure describes filter media structures having a first layer with an electret web and a second layer that demonstrates biological-reducing properties. In some cases, the first layer is formed from polypropylene (e.g., spunbond) and the second layer is formed from a plurality of fibers of a polyamide composition (e.g., meltblown).