Hydrophilic polymer based on acrylic acid and alkali metal acrylate, its preparation process and its use as an absorbing agent, in particular as an absorbing agent for articles of hygiene
US5098951A · kind A · utility
3Cited by
4References
4Claims
0Family size
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Key dates
| Filing date | Apr 29, 1991 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Apr 29, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Hydrophilic polymer, as microbeads insoluble in water, based on acrylic acid and an alkali metal acrylate constituted by an acrylic acid-potassium acrylate copolymer, cross-linked with 100 ppm to 3,000 ppm relative to the total weight of monomers of one or more cross-linking agents chosen from the group constituted by the products of general formula I: ##STR1## A=a bivalent radical derived from a C.sub.3 -C.sub.6 alkane presenting an absorption capacity for a salty physiological solution of 30 to 70 g per gram and from 10 to 35 g per gram under pressure, preparation process and use notably in articles of hygiene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.