公开(公告)号：US20190194847A1

公开(公告)日：2019-06-27

申请号：US16308251

申请日：2017-06-06

Applicant: Ascend Performance Materials Operations LLC

Inventor： Harrie P. Schoots ,  Wai-Shing Yung ,  Scott E. Osborn ,  Craig A. Trask

IPC: D04H3/16 ,  D04H1/4334 ,  D04H3/009 ,  D04H1/732 ,  D04H3/03 ,  D04H1/56 ,  B01D39/16 ,  B01D46/54

CPC classification number: D04H3/16 ,  B01D39/1623 ,  B01D46/546 ,  B01D2239/0208 ,  B01D2239/0618 ,  B01D2239/10 ,  B01D2239/1233 ,  B01D2239/1258 ,  D04H1/4334 ,  D04H1/56 ,  D04H1/732 ,  D04H3/009 ,  D04H3/03 ,  D06M11/00 ,  D10B2501/00 ,  D10B2505/04

Abstract: A polymer, applications thereof, and method of making a nanofiber nonwoven product is disclosed which includes: providing a spinnable polyamide polymer composition comprising a solution of a polyamide in a suitable solvent, wherein the polyamide has a Relative Viscosity of from 30-300; a basis weight greater than 1 gm/m2, solution-spinning the polyamide polymer composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron (1000 nanometers); and forming the nanofibers into said nonwoven product which thereby has an average nanofiber diameter of less than 1 micron (1000 nanometers). Preferably, the nonwoven product is solution-spun from a process selected from (i) centrifugal spinning using a rotating spinneret or (ii) 2-phase propellant-gas spinning including extruding the polyamide polymer composition in liquid form with pressurized gas through a fiber-forming channel. Suitable solvents include formic acid, sulfuric acid, trifluoroacetic acid, hexafluoroisopropanol (HFIP) and phenols including m-cresol.

公开(公告)号：US20170314168A1

公开(公告)日：2017-11-02

申请号：US15497499

申请日：2017-04-26

Applicant: Ascend Performance Materials Operations LLC

Inventor： Harrie P. Schoots ,  Cihan Uzunpinar ,  Gregg T. Lowery

IPC: D02G3/44 ,  D03D15/00

CPC classification number: D02G3/441 ,  D01F1/09 ,  D01F8/04 ,  D03D15/0005 ,  D04B1/16 ,  D10B2401/16 ,  D10B2403/0111

Abstract: An anti-static fleece or brushed fabric consisting essentially of acrylic fiber, polyester fiber, cotton fiber, wool fiber, nylon fiber or combinations of 2 or more thereof, characterized in that the fleece or brushed fabric has a basis weight of from 65 gsm to 400 gsm, contains from 0.1 wt % to 2 wt % of bicomponent anti-static fiber and is further characterized in that the fleece or brushed fabric exhibits a static decay time of less than 4 seconds The woven or knit fleece or brushed fabric has permanent anti-static properties which do not wash out during laundering. A preferred yarn for making the fleece or brushed fabric is a composite anti-static filamentary yarn comprising anti-static bicomponent filament wrapped with non-conductive filament in a weight ratio of non-conductive filament:anti-static bicomponent filament of from 2:1 to 8:1.