Water-absorbing resin and manufacturing method for same
US12337295B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 12, 2021 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Aug 21, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
It is an object to provide a water-absorbing resin that while maintaining water-absorbing resin physical properties such as water absorption performance, has a sufficiently reduced odor produced during swelling. The object is attained by causing the water-absorbing resin to be a water-absorbing resin which is a surface-crosslinked water-absorbing resin, the water-absorbing resin having a volatile component concentration of 3.5 ppm or less as measured when the water-absorbing resin is caused to stand still for 15 minutes under a condition that the water-absorbing resin has a swelling capacity of 1.0-fold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.