Process of making carbon fibers derived from lignin/carbon residue
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United States of America Patent
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Sep 12, 2017
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app pub date -
Nov 5, 2013
filing date -
Nov 16, 2012
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Abstract
A method of making a carbon fiber comprising esterification of a lignin precursor with an acid, acid anhydride, or acyl halide, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue selected from the group of coal based raw material, petroleum based raw material and combinations thereof, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising esterification of a lignin with an acid derivative, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a pitch, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising lowering the Tg of a lignin material, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue, thereby forming a fiber precursor mixture and spinning the fiber precursor mixture into a fiber.
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International Classification(s)
- D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....
- C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
- C07G:COMPOUNDS OF UNKNOWN CONSTITUTION
- C08H:DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
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