METHOD FOR THE PRODUCTION OF POLYSULFONES, AND POLYSULFONES
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United States of America Patent
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May 7, 2015
app pub date -
May 3, 2013
filing date -
May 11, 2012
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Abstract
The invention relates to an improved method for producing polysulfones, in particular polyethersulfones (PES) and polyphenylene sulfones (PPSU), where N-methylpyrrolidone (NMP) or/and N-ethylpyrrolidone (NEP) is/are used as solvent/as solvents. The invention also relates to the obtained polysulfones that have a higher glass transition temperature, molded articles produced therefrom, and use thereof.
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