公开(公告)号：WO2017214085A1

公开(公告)日：2017-12-14

申请号：PCT/US2017/036062

申请日：2017-06-06

Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC

Inventor： SCHOOTS, Harrie, P. ,  YUNG, Wai-Shing ,  OSBORN, Scott, E. ,  TRASK, Craig, A.

IPC: A47G27/02 ,  B05D3/06 ,  B29C35/08 ,  D04H1/40 ,  D06M11/00

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/m 2 , 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.

Abstract translation: 公开了聚合物，其应用以及制备纳米纤维非织造产品的方法，其包括：提供可纺聚酰胺聚合物组合物，其包含聚酰胺在合适溶剂中的溶液，其中所述聚酰胺具有相对 粘度30-300; 基重大于1gm / m 2，将聚酰胺聚合物组合物溶液纺丝成多根平均纤维直径小于1微米（1000纳米）的纳米纤维; 以及将纳米纤维形成为所述非织造产品，其由此具有小于1微米（1000纳米）的平均纳米纤维直径。 优选地，非织造产品由选自以下的方法溶液纺丝：（i）使用旋转喷丝板离心纺丝或（ii）2阶段推进剂气体纺丝，包括将液体形式的聚酰胺聚合物组合物与加压气体通过纤维 - 形成通道。 合适的溶剂包括甲酸，硫酸，三氟乙酸，六氟异丙醇（HFIP）和包括间甲酚的酚类。