The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2003
Filed:
Dec. 16, 1999
Takashi Katayama, Kurashiki, JP;
Kazuhiko Tanaka, Kurashiki, JP;
Naoki Fujiwara, Kurashiki, JP;
Tomoaki Kimura, Saijyo, JP;
Akihiro Hokimoto, Kurashiki, JP;
Nobuhiro Koga, Kurashiki, JP;
Hitoshi Nakatsuka, Kurashiki, JP;
Yoshimi Umemura, Kurashiki, JP;
Hiroshi Kanehira, Kurashiki, JP;
Masao Kawamoto, Kurashiki, JP;
Junyo Nakagawa, Kurashiki, JP;
Kuraray Co., Ltd., Kurashiki, JP;
Abstract
Provided are melt-spun fibers comprising, as at least one component, a water-soluble polyvinyl alcohol, and a method for producing fibrous structures comprising the fibers. The thermoplastic polyvinyl alcohol fibers comprise, as at least one component, a water-soluble polyvinyl alcohol containing from 0.1 to 25 mol % of C1-4 &agr;-olefin units and/or vinyl ether units, having a molar fraction, based on vinyl alcohol units, of a hydroxyl group of vinyl alcohol unit located at the center of 3 successive vinyl alcohol unit chain in terms of triad expression of being from 70 to 99.9 mol %, having a carboxylic acid and lactone ring content of from 0.02 to 0.15 mol %, and having a melting point falling between 160° C. and 230° C., and contain from 0.0003 to 1 part by weight, relative to 100 parts by weight of the polyvinyl alcohol therein and in terms of sodium ion, of an alkali metal ion.