US2025011511A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025011511-A1 |
| Application number | US-202418895015-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 24, 2024 |
| Priority date | Jul 2, 2018 |
| Publication date | Jan 9, 2025 |
| Grant date | — |
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A polymer comprising repeating units derived from a first monomer, typically acrylonitrile, and repeating units derived from a second monomer different from the first monomer, wherein the second monomer is a compound comprising an ethylenically unsaturated organic anion and an organic cation containing a C═N imine group; a process for producing carbon fibers using the said polymer; and carbon fibers made therefrom, are described herein.
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1 . (canceled) 2 . (canceled) 3 . (canceled) 4 . (canceled) 5 . (canceled) 6 . (canceled) 7 . A process for producing a polymer comprising repeating units derived from a first monomer and repeating units derived from a second monomer different from the first monomer, wherein the second monomer is a compound comprising an ethylenically unsaturated organic anion and an organic cation containing a C═N imine group, the process comprising copolymerizing a first monomer and a second monomer different from the first monomer, wherein the second monomer is a compound comprising an ethylenically unsaturated organic anion and an organic cation containing a C═N imine group. 8 . The process according to claim 7 , wherein the comonomer percentage is 0 to 20%. 9 . The process according to claim 7 , wherein the copolymerization is conducted with 2,2′-azobis [2-(2-imidazolin-2-yl) propane]dihydrochloride as initiator. 10 . (canceled) 11 . (canceled) 12 . (canceled) 13 . (canceled) 14 . (canceled) 15 . (canceled) 16 . (canceled) 17 . The process according to claim 7 , wherein the first monomer is acrylonitrile. 18 . The process according to claim 8 , wherein the comonomer percentage is 1 to 5%. 19 . The process according to claim 18 , wherein the comonomer percentage is 1 to 3%. 20 . (canceled)
with carboxylic acids, sulfonic acids or salts thereof · CPC title
from polyacrylonitriles · CPC title
comprising unsaturated nitriles as the major constituent · CPC title
Washing or drying · CPC title
Melting filament-forming substances · CPC title
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