Hydrophilic polymer based on acrylic acid and alkali metal acrylate, its preparation process and its use as an absorbing agent
US5053460A · kind A · utility
3Cited by
4References
9Claims
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Key dates
| Filing date | Mar 16, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Mar 16, 2010 |
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.