Method of spinning artificial filaments

Claim 1

A PROCESS COMPRISING EXTRUDING AN AQUEOUS DISPERSION OF A BLEND OF LINEAR POLYMERS AT A CONSTANT RATE OF SPEED THROUGH A SPINNERET INTO AN ACIDIC AQUEOUS COAGULATING BATH HAVING A TEMPERATURE OF 40* TO 100* C. AND A PH NOT OVER 4.5 AND CONTAINING AT LEAST 5% BY WEIGHT OF ELECTROLYTE HAVING A DIFFUSION VOEFFICIENT AT ROOM TEMPERATURE OF AT LEAST 1 X 10-5 CM.2/SEC., AND DRAWING THE FILAMENT THROUGH THE COAGULATING BATH AT A CONSTANT RATE OF SPEED, THE BLEND OF POLYMERS COMPRISING (A) A POLYMER OF AT LEAST ONE MONOVINYL AROMATIC COMPOUND AND (B) A LINEAR POLYMER OF AT LEAST ONE COMPOUND SELECTED FROM A GROUP CONSISTING OF ALKENYL HALIDES AND LINEAR ALIPHATIC POLYENES, ONE OF THE POLYMES IN THE BLEND HAVING AN APPARENT SECOND ORDER TRANSITION TEMPERATURE OF AT LEAST 20* C., THE PROPORTION OF UNITS IN THE POLYMER BLEND DERIVED FROM A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKENYL HALIDES AND POLYENES BEING ABOUT 2 TO 30% BY WEIGHT OF THE BLEND, THE AQUEOUS DISPERSION CONTAINING ABOUT 2 TO 25% BY WEIGHT, BASED ON THE POLYMER BLEND WEIGHT, OF A SOLATING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND HALOGENATED HYDROCARBONS BOILING IN THE RANGE OF 40* C. TO 220 C. AND THE TEMPERATURE OF THE COAGULATING BATH BEING ABOVE THE T: VALUE OF THE SOLVATED POLYMER IN THE BLEND HAVING THE HIGHEST T1 VALUE IN SOLVATED CONDITION.