Method of preparing acrylonitrile-based copolymer for carbon fiber
US11905354B2 · kind B2 · utility
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Key dates
| Filing date | Nov 1, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Feb 16, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2800/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is a method of preparing an acrylonitrile-based copolymer for a carbon fiber, which comprises: preparing a reaction solution including a monomer mixture comprising a sulfonate-based monomer represented by Chemical Formula 1, a carboxylic acid-based monomer, and an acrylonitrile-based monomer and an organic solvent; and subjecting the reaction solution to polymerization, wherein the monomer mixture comprises the sulfonate-based monomer represented by Chemical Formula 1 at 0.55 to 1.6 mol %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.