Hollow water absorbing polyester filaments and a process for pro

Details Hollow water absorbing polyester filaments and a process for pro Hollow water absorbing polyester filaments and a process for pro

1980-07-14

1982-06-22

Woo, Jay H.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

264 49, 264561, 2642091, 264211, 264344, B29H 720, D02G 300

Patent

active

043363075

ABSTRACT:
Hollow water-absorbing polyester filaments, each having fine pores evenly distributed throughout the filament and extending approximately in parallel to the filament axis, are produced by melt-spinning a blend of a polyester and a pore-forming agent consisting of at least one sulfonate compound of the formula:

REFERENCES:
patent: 3135813 (1964-06-01), Speakman
patent: 3493459 (1970-02-01), McIntosh et al.
patent: 3558420 (1971-01-01), Opfell
patent: 3682846 (1972-08-01), Sano et al.
patent: 3772137 (1973-11-01), Tolliver
patent: 4046843 (1977-09-01), Sano et al.
patent: 4171987 (1979-10-01), Horiguchi et al.
patent: 4182582 (1980-01-01), Youval et al.

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