EP 0098477 B1 19851204 - CONTINUOUS PROCESS FOR DRY-SPINNING ACRYLONITRILE FILAMENTS AND FIBRES
Title (en)
CONTINUOUS PROCESS FOR DRY-SPINNING ACRYLONITRILE FILAMENTS AND FIBRES
Publication
Application
Priority
DE 3225266 A 19820706
Abstract (en)
[origin: US4457884A] Ready-for-despatch filaments and fibres made of acrylonitrile polymers which contain at least 40% by weight of acrylonitrile units can be prepared from a spinning solution in a continuous dry-spinning method in which (a) the spinning solution spun has a viscosity at 100 DEG C. of 10 to 60 falling-ball seconds, (b) the evaporation of the solvent in the spinning cell is controlled in such a way that on leaving the spinning cell the solvent content of the filaments is at most 40% by weight, relative to the solids content of the fibre, (c) before the stretch the filaments are treated with a spin-finish which contains a lubricant and an antistat and gives the filaments a moisture content of at most 10% by weight, relative to the solids content of the fibre, and (d) before the stretch the filaments have no contact with any other extraction liquid for the spinning solvent.
IPC 1-7
IPC 8 full level
D01D 5/04 (2006.01); D01F 6/18 (2006.01); D01F 6/38 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0098477 A1 19840118; EP 0098477 B1 19851204; EP 0098477 B2 19920701; DE 3225266 A1 19840112; DE 3225266 C2 19901108; DE 3361408 D1 19860116; JP H0413442 B2 19920309; JP S5921711 A 19840203; US 4457884 A 19840703
DOCDB simple family (application)
EP 83106170 A 19830624; DE 3225266 A 19820706; DE 3361408 T 19830624; JP 12111883 A 19830705; US 50554483 A 19830617