Process for the production of water-swellable products using superfines of water-swellable polymers
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United States of America Patent
Stats
-
Oct 3, 1995
Grant Date -
N/A
app pub date -
Jun 7, 1993
filing date -
Jul 9, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a process for the production of water-swellable products, using very fine particles of water-swellable polymers, characterized by the following steps: a) the very fine particles of water-swellable polymer are dispersed in a monomer which is liquid at room temperature and does not cause the polymeric superfines to swell, b) the dispersion obtained in step a) is mixed with an aqueous monomer solution, c) the mixture obtained in step b) is polymerized by the addition of catalysts and/or by exposure, and d) the polymer gel is comminuted and dried. The present invention further relates to a water-insoluble, water-swellable polymer which absorbs aqueous and serous liquids and blood, and is obtained by the process described above.
First Claim
Other Claims data not available