Title:
FLAMEPROOF RAYON FIBER AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2007/023777
Kind Code:
A1
Abstract:
The invention provides rayon fiber which is excellent in flameproofness and washing
resistance in spite of its being made without halogenated flame retardants, phosphate
flame retardants, and organic solvents and which can be biodegraded when buried
in the ground for disposal and a process for the production of the fiber. The flameproof
rayon fiber contains therein silicon and magnesium in the form of a noncrystalline
compound. The fiber can be produced by preparing a viscose dope, adding a silicate
compound containing an alkali metal to the dope, extruding the resulting dope
through a nozzle into a spinning bath containing sulfuric acid to form fiber containing
the silicate compound, and treating the fiber with a magnesium-containing solution
in the scouring or post-treatment step.
Inventors:
FUSHITANI SHIGEO
NAKANO MASARU
NAKANO MASARU
Application Number:
PCT/JP2006/316351
Publication Date:
March 01, 2007
Filing Date:
August 22, 2006
Export Citation:
Assignee:
DAIWA SPINNING CO LTD (JP)
DAIWABO RAYON CO LTD (JP)
FUSHITANI SHIGEO
NAKANO MASARU
DAIWABO RAYON CO LTD (JP)
FUSHITANI SHIGEO
NAKANO MASARU
International Classes:
D01F2/10; D06M11/44
Domestic Patent References:
| WO1993013249A1 | 1993-07-08 | |||
| WO1995024525A1 | 1995-09-14 |
Foreign References:
| JP2001329461A | 2001-11-27 | |||
| JPH10204773A | 1998-08-04 | |||
| JP2000136428A | 2000-05-16 |
Other References:
See also references of EP 1918431A4
None
None
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (OAP TOWER 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-sh, Osaka 26, JP)
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