Fixation of polymers retaining liquids in a porous structure
US4798744A · kind A · utility
17Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Mar 23, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The process applies to polymers obtained by a water-in-oil process, that is to say, a reverse emulsion process or a suspension process in reversible phase. The process of fixation of this type of polymer in or on a porous support is characterized in that it comprises the impregnation of the porous support with said reverse suspension or emulsion resulting from the polymerization reaction and the removal of solvent from the support. By said process, complexes are obtained which present improved absorption properties and offer a better holding of the product to the support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.