Spinning of fibers and films from particulate dispersions

Claim 1

A PROCESS FOR MAKING SELF-SUPPORTING FIBERS, FILAMENTS, YARNS, AN FILMS OF SNYTHETIC POLYMRS WHICH COMPRISES PASSING AN AQUEOUS DISPERSION HAVING A PH OF AT LEAST 7, FORMED WITH AN ACID-SENSITIVE EMULSIFIER WHICH LOSES ITS DISPERDING CAPATICY IN AN ACID MEDIUM, CONTAINING AT LEAST 20% BY WEIGHT OF A WATER-INSOLUBLE THERMOPLASTIC ADDITION CPOLYMER OF AT LEAST TWO MONOVINYLIDENE COMPOUNDS AT LEAST ONE OF WHICH CONTAINS A POLLAR GROUP, THE COPOLYMER BEING PRESENT IN SAID DIS PERSION INA PARTICLE SIZE LESS THAN TWO MICRONS, HAVING A MOLECULAR WEIGHT OF AT LEAST 20,000 AND HAVING AN APPARENT SECOND ORDER TRANSITION TEMPERTURE, T1, BETWEEN 30* AND 150*C., THROUGH AN ORIFIC AS A STREAM INTO AN ACIDIC AQUEOUS COAGULATING BATH HAVING A PH OF NOT OVER 4.1 AND A TEMPERATURE ABOVE THE APPARENT SECOND ORDER TRANSITION TEMPERATURE OF THE COPOLYMER IN THE CONDITION OF SOLVATION IN WHICH IT ENTERS THE COAGULATING BATHM WHEREBY A SHAPED PRODUCT IS FORMED FROM THE STREAM, DRAWING THE PRODUCT THROUGH THE BATH, DRYING THE PRODUCT, AND HEATING THE PRODUCT IN A ZONE HELD AT A TEMPERATURE ABOVE TH APPAENT SECOND ORDER TRANSITION TEMPERATURE, SAID TEMPERATURE BEING AT LEAST 60*C., FOR A TIME SUFFICIENT TO BRING THE PRODUCT ABOVE ITS APPARENT SECOND ORDER TRANSITION TEMPERATURE BUT BELOW THE TEMPERATURE AT WHDICH DECOMPOSITION OCCURS, AND TO CAUSE COALENCENCE OF PARTICLES THEREIN.