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
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United States of America Patent
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Mar 24, 1992
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N/A
app pub date -
Apr 29, 1991
filing date -
Mar 16, 1989
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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.
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