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US 9,725,827 B2Granted
Process for producing water-absorbing polymer fibers
AssigneeBASF SE
InventorsThomas Daniel, Xiaomin Zhang, Kathleen H. Goebel
Life of this patent
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Abstract
The invention relates to a process for producing water-absorbing crosslinked polymer fibers, especially micro- or nanofibers, by spinning process, especially electrospinning process and to fibers obtainable by this process.
Claims17
A process for producing water-absorbing polymer fibres comprising:
- a) spinning a solution of at least one water-soluble polymer, and
- b) subjecting the resulting fibres to UV radiation,
- wherein the water soluble polymer solution is free of crosslinking agent.
Water-absorbing polymer fibres having a centrifuge retention capacity (CRC) of at least 5 g/g, a fiber diameter of 0.3 to 2 μm, a degree of neutralization of 10 to 80 mol %, and free of crosslinking agent.
Dependencies are inferred from the claim text.