THERMOPLASTIC LIGNIN FOR PRODUCING CARBON FIBERS
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United States of America Patent
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Issued Date -
Jul 18, 2013
app pub date -
Sep 8, 2011
filing date -
Sep 23, 2010
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Abandoned
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Abstract
A fusible lignin has a gas transition temperature in the range between 90 and 160° C. determined using differential scanning calorimetry (DSC), a molar mass distribution with a dispersivity of less than 28, determined using gel permeation chromatography (GPC), an ash content of less than 1 wt. %, and a proportion of volatile components of a maximum of 1 wt. %. Also provided is a precursor fiber based on the fusible lignin, as well as a method for the production thereof Also provided is a method for producing a carbon fiber from the precursor fiber.
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