Title:
ヤーン、ファイバー及びフィラメントの製造方法
Document Type and Number:
Japanese Patent JP2004531651
Kind Code:
A
Abstract:
The invention concerns a method for making yarns, fibres and filaments based on polyamide, and yarns, fibres and filaments obtainable by said method. The invention concerns a method for making yarns, fibres and filaments based on a polyamide composition having a molecular structure for enhancing overall productivity of the spinning process, in particular by improving the capacity for drawing the yarns produced thereby providing, for example, for a single identical spinning speed a much higher yarn meterage produced per time unit after drawing. The invention consists in a method for making synthetic yarns, fibres and filaments based on polyamide, comprising the following steps: i) mixing in molten phase the following compounds A and B: compound A: a linear polyamide; compound B selected in the group comprising: star-shaped or H-shaped macromolecular chains including one or several cores and at least three polyamide branches or three polyamide segments bound to said core, obtained from amino acid monomers and/or lactams, and as the case may be linear polyamide macromolecular chains obtained from amino acid monomers and/or lactams the melt index in molten phase of the polyamide or of the polyamide composition measured in accordance with the ISO 1133 standard at 275° C. under 100 g load being higher than 20 g/10 min, and a multifunctional compound comprising at least three identical acid or amine functions; ii) spinning the mixture in molten phase; iii) and optionally drawing said resulting yarns, fibres or filaments.
Inventors:
Florence Clement
Arnaud Coche
Pierre Park
Arnaud Coche
Pierre Park
Application Number:
JP2002566014A
Publication Date:
October 14, 2004
Filing Date:
February 21, 2002
Export Citation:
Assignee:
Rhodia Polyamide Intermedium
International Classes:
D01F6/60; C08L77/00; D01F6/90; C08L77/06; (IPC1-7): D01F6/90
Attorney, Agent or Firm:
Motohiro Kurauchi
Hiroshi Kazama
Hiroshi Kazama