Process for adding superabsorbent to a pre-formed fibrous web via in situ polymerization
US6872275B2 · kind B2 · utility
24Cited by
63References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2001 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Dec 19, 2022 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06N2211/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for forming an absorbent fibrous web composite includes the initial step of forming a fibrous web from hydrophilic fibers and, optionally, thermoplastic fibers. Then, a superabsorbent polymer is completely formed in situ on or in the fibrous web by adding one or more superabsorbent polymer precursor compositions to the fibrous web using a non-contact process, and performing the polymerization reaction(s) completely on or in the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.