Title:
コア-シェル型フルオロポリマーの分散紡糸
Document Type and Number:
Japanese Patent JP2007518893
Kind Code:
A
Abstract:
A process is disclosed for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible fluoropolymer particles and an aqueous solution of a matrix polymer is formed. The non-melt-processible fluoropolymer particles have an SSG of less than about 2.40 and comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. The mixture is extruded into a coagulation bath containing a concentration of ions which coagulate the matrix polymer to form an intermediate fiber structure. The intermediate fiber structure is sintered to decompose the matrix polymer and coalesce the non-melt-processible fluoropolymer particles to form the fiber. The present invention also provides a spinning composition useful for the dispersion spinning of non-melt-processible fluoropolymer fiber.
Inventors:
Clay woodward jones
Application Number:
JP2006547278A
Publication Date:
July 12, 2007
Filing Date:
December 21, 2004
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
D01F6/48; C08F259/08; C08K3/00; D01F2/28; D01F6/12
Domestic Patent References:
| JPH02248484A | 1990-10-04 | |||
| JP3000654B | ||||
| JP2001511222A | 2001-08-07 | |||
| JPH08209436A | 1996-08-13 |
Foreign References:
| WO2003062291A1 | 2003-07-31 |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe