Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1977-02-17
1979-03-06
Kendell, Lorraine T.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
264206, 428374, 428398, D02G 300
Patent
active
041432002
ABSTRACT:
The invention relates to a process for the production of filaments and fibres having a moisture absorption of at least 7% and a water retention capacity of at least 25% by dry-spinning an acrylonitrile copolymer, containing more than 50 mval of carboxyl groups from a solvent, which contains 5 to 50% by weight of a compound with properties defined herein, washing the compound added to the solvent out of the freshly spun filaments and fibres and partly or completely converting the carboxyl groups into the salt form. The invention further relates to dry-spun filaments and fibres having a core and sheath structure, comprising a fibre-forming acrylonitrile copolymer having more than 50 mval of carboxyl and carboxylate groups and having a moisture absorption capacity of at least 7% and a water retention capacity of at least 25%.
REFERENCES:
patent: 3038238 (1962-06-01), Wu
patent: 3957936 (1976-05-01), Lauchenauer
patent: 3984515 (1976-10-01), Mommaerts
patent: 3984601 (1976-10-01), Blickenstaff
Nischk Gunther
Radlmann Eduard
Reinehr Ulrich
Bayer Aktiengesellschaft
Kendell Lorraine T.
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