| abstract |
A METHOD IS PROVIDED FOR MANUFACTURING SHAPED ARTICLES ESPECIALLY FIBERS AND FILMS FROM A SOLVENT SOLUTON OF COPOLYMER COMPRISED OF AT LEAST 85 MOL PERCENT OF ACRYLONITRILE AND AT LEAST ONE OTHER COMPOUND OF THE FORMULA CH2=C(-CN)-CH(-R)-OH WHEREIN R IS HYDROGEN, AN ALKYL GROUP, AN ARYL GROUP OR ALKYLARYL GROUP. IN THE METHOD OF THIS INVENTION THE SOLVENT SOLUTION IS SHAPED AND THEREAFTER COAGULATED IN A BATH COMPRISED OF AT LEAST 60% BY WEIGHT OF METHANOL. THE SHAPED ARTICLES, FOR EXAMPLE, FILAMENTS, BECAUSE OF THEIR SUPERIOR PROPERTIES, ARE ESPECIALLY USEFUL AS TEXTILE FIBERS. |