Title:
FLAMEPROOF RAYON FIBER, PROCESS FOR PRODUCTION THEREOF, AND FLAMEPROOF FIBER STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2011/080826
Kind Code:
A1
Abstract:
Disclosed is a flameproof rayon fiber which contains a silicon component and a sodium component therein and which, when burnt at 800°C, forms a vitreous residue that has a property of softening at 800°C. Further, the flameproof rayon fiber has a silicon content of 5 to 30% by mass and a sodium content of 0.1 to 3% by mass as determined by fluorescent X-ray analysis. The flameproof rayon fiber can be produced by: preparing a viscose dope; adding a solution that contains a silicic acid compound containing an alkali metal to the viscose dope to form a viscose solution that contains the silicic acid compound containing an alkali metal; extruding this viscose solution through a nozzle into a spinning bath that contains sulfuric acid to produce treated fibers that contain the silicic acid compound; and further treating the treated fibers with a sodium-containing buffer solution having a pH of 4 to 11 in a scouring or post-finishing step.
Inventors:
FUSHITANI Shigeo (())
伏谷重雄 (())
伏谷重雄 (())
Application Number:
JP2009/071771
Publication Date:
July 07, 2011
Filing Date:
December 28, 2009
Export Citation:
Assignee:
DAIWABO HOLDINGS CO., LTD. (6-8 Kyutaromachi 3-chome, Chuo-ku Osaka-sh, Osaka 56, 〒5410056, JP)
ダイワボウホールディングス株式会社 (〒56 大阪府大阪市中央区久太郎町３丁目６番８号 Osaka, 〒5410056, JP)
DAIWABO RAYON CO., LTD. (8-14, Minamihonmachi 1-chome Chuo-ku, Osaka-sh, Osaka 54, 〒5410054, JP)
ダイワボウレーヨン株式会社 (〒54 大阪府大阪市中央区南本町１丁目８番１４号 Osaka, 〒5410054, JP)
ダイワボウホールディングス株式会社 (〒56 大阪府大阪市中央区久太郎町３丁目６番８号 Osaka, 〒5410056, JP)
DAIWABO RAYON CO., LTD. (8-14, Minamihonmachi 1-chome Chuo-ku, Osaka-sh, Osaka 54, 〒5410054, JP)
ダイワボウレーヨン株式会社 (〒54 大阪府大阪市中央区南本町１丁目８番１４号 Osaka, 〒5410054, JP)
International Classes:
D01F2/10
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (26th Floor, OAP TOWER 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-sh, Osaka 26, 〒5306026, JP)
Download PDF: