公开(公告)号：WO2021152426A1

公开(公告)日：2021-08-05

申请号：PCT/IB2021/050415

申请日：2021-01-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： LI, Fuming B. ,  BRANDER, John M. ,  SCHULTZ, Nathan E. ,  SEBASTIAN, John M.

IPC: D04H1/4326 ,  B01D39/16 ,  D04H1/435 ,  D04H1/4382 ,  D04H1/56 ,  D04H3/007 ,  D04H3/14 ,  D06M10/02

Abstract: Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The additives are substituted heterocyclic thiols. The heterocyclic thiol has 2 nitrogen groups and a third group that may be an NH, N-NH2, O, or S group. The substituent group is an aromatic or heterocyclic aromatic group. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.