Semi-aromatic polyamide fiber and method for producing same
US12037715B2 · kind B2 · utility
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3References
20Claims
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Key dates
| Filing date | Sep 17, 2020 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | May 14, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is a semi-aromatic polyamide fiber having excellent spinning stability, heat resistance and chemical resistance. The semi-aromatic polyamide fiber includes a semi-aromatic polyamide resin having a melting point of 290° C. or higher and a plasticizer having a 5% thermal weight reduction temperature of 320° C. or higher, the resin having as a dicarboxylic acid component an aromatic dicarboxylic acid unit and as a diamine component 1,9-nonanediamine unit and 2-methyl-1,8-octanediamine unit in a molar ratio (the former:the latter) of 70:30 to 99:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.