(19)
(11) EP 0 570 227 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.06.1994 Bulletin 1994/24

(43) Date of publication A2:
18.11.1993 Bulletin 1993/46

(21) Application number: 93303718.6

(22) Date of filing: 13.05.1993
(51) International Patent Classification (IPC)5: D01F 6/92, D01D 5/247
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 14.05.1992 JP 121961/92
15.04.1993 JP 88602/93

(71) Applicant: TEIJIN LIMITED
Osaka-shi, Osaka 541 (JP)

(72) Inventors:
  • Yamada, Hironori
    Matsuyama-shi, Ehime (JP)
  • Fujita, Hiroshi
    Toyonaka-shi, Osaka (JP)
  • Tamura, Atsuo
    Ibaraki-shi, Osaka (JP)
  • Kuroda, Toshimasa
    Takatsuki-shi, Osaka (JP)

(74) Representative: Votier, Sidney David et al
CARPMAELS & RANSFORD 43, Bloomsbury Square
London WC1A 2RA
London WC1A 2RA (GB)


(56) References cited: : 
   
       


    (54) Polyester fiber having excellent deep dyeability and process for producing the same


    (57) A polyester fiber having an excellent deep dyeability, comprising a polyester consisting essentially of recurring units of ethylene terephthalate, and incorporated therein, a polyoxyalkylene glycol derivative represented by the following general formula (I), pores defined by traces of removal of said polyoxyalkylene glycol derivative being present on the surface of said fiber:


    wherein Z represents a residue of at least one dihydroxy compound selected from the group consisting of an aliphatic diol having 5 to 10 carbon atoms, an alicyclic diol having 3 to 15 carbon atoms, a bisphenol compound and a dihydric phenol, A represents an alkylene group having 2 to 4 carbon atoms, X represents a residue of a monohydroxy compound and m is a positive integer.





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