US12509818B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12509818-B2 |
| Application number | US-202118028138-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 27, 2021 |
| Priority date | Sep 28, 2020 |
| Publication date | Dec 30, 2025 |
| Grant date | Dec 30, 2025 |
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Disclosed is a synthetic fiber treatment agent that contains a smoothing agent and a nonionic surfactant. The smoothing agent contains a condensed hydroxy fatty acid formed by condensation from a hydroxy fatty acid having a hydroxy group and a carboxy group in the molecule.
Opening claim text (preview).
The invention claimed is: 1 . A synthetic fiber treatment agent comprising a smoothing agent and a nonionic surfactant, wherein the smoothing agent contains a condensed hydroxy fatty acid formed by condensation only from a hydroxy fatty acid having a hydroxy group and a carboxy group in the molecule, the smoothing agent further contains a modified silicone that is amino-modified silicone, taking the sum of the content ratios of the smoothing agent and the nonionic surfactant in the synthetic fiber treatment agent as 100% by mass, the content ratio of the condensed hydroxy fatty acid in the synthetic fiber treatment agent is 0.1% to 15% by mass, and the condensed hydroxy fatty acid is a castor oil fatty acid condensate or a hydrogenated castor oil fatty acid condensate. 2 . The synthetic fiber treatment agent according to claim 1 , wherein the condensed hydroxy fatty acid has a degree of condensation of 2 to 10. 3 . The synthetic fiber treatment agent according to claim 1 , further comprising an ionic compound. 4 . The synthetic fiber treatment agent according to claim 3 , wherein taking the sum of the content ratios of the smoothing agent, the nonionic surfactant, and the ionic compound in the synthetic fiber treatment agent as 100% by mass, the content ratio of the condensed hydroxy fatty acid in the synthetic fiber treatment agent is 0.1% to 15% by mass. 5 . The synthetic fiber treatment agent according to claim 1 , wherein the synthetic fiber is a carbon fiber precursor. 6 . A synthetic fiber to which the synthetic fiber treatment agent according to claim 1 is adhered.
Acrylonitrile; Methacrylonitrile · CPC title
containing amino groups · CPC title
Alcohols; Metal alcoholates (D06M13/11 takes precedence) · CPC title
containing silicon in the main chain · CPC title
Reduced friction resistance, lubricant properties; Sizing compositions · CPC title
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