Process for making polyacrylonitrile fibers

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United States of America Patent

PATENT NO 12037714
APP PUB NO 20220267932A1
SERIAL NO

17669982

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Abstract

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A process is disclosed herein comprising the steps:

    a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3;wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; andthe ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis;b) combining the product obtained in step a) with polyacrylonitrile; andc) spinning fibers.

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Patent Owner(s)

Patent OwnerAddress
NUTRITION & BIOSCIENCES USA 4 INCROCHESTER NY 14623

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adelman, Douglas J Wilmington, US 23 1343
Behabtu, Natnael Wilmington, US 52 210
Briegel, Alicia C Wilmington, US 8 25
Herbert, Christian Dormagen, DE 3 2
Johnson, Ross S Wilmington, US 33 251
Lenges, Christian Peter Wilmington, US 61 1706
Opper, Kathleen Wilmington, US 18 147
Wego, Andreas Jorgen Dusseldorf, DE 2 0

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