(19)
(11) EP 0 327 696 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.03.1990 Bulletin 1990/12

(43) Date of publication A2:
16.08.1989 Bulletin 1989/33

(21) Application number: 88120129.7

(22) Date of filing: 02.12.1988
(51) International Patent Classification (IPC)4: D01F 6/14
(84) Designated Contracting States:
CH DE FR GB IT LI SE

(30) Priority: 10.02.1988 JP 29563/87

(71) Applicant: TORAY INDUSTRIES, INC.
Tokyo (JP)

(72) Inventors:
  • Ueda, Fujio
    Iyo-gun Ehime-ken (JP)
  • Tanaka, Hiroyoshi
    Iyo-gun Ehime-ken (JP)
  • Hayashi, Masahiko
    Iyo-shi Ehime-ken (JP)

(74) Representative: Weber, Dieter, Dr. et al
Weber, Dieter, Dr., Seiffert, Klaus, Dipl.-Phys., Lieke, Winfried, Dr. Postfach 61 45
65051 Wiesbaden
65051 Wiesbaden (DE)


(56) References cited: : 
   
       


    (54) High-tenacity water-soluble polyvinyl alcohol fiber and process for producing the same


    (57) A high-tenacity water-soluble polyvinyl alcohol fiber comprising a fiber composed of a polyvinyl alcohol polymer with a degree of polymerization of at least 1500 and a degree of saponification of 80 to 99 mol% and having a tensile strength of at least 10 g/d, an initial modulus of at least 100 g/d, and a water soluble temperature of 100° C or below, and a process of producing the fiber.







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