Water absorbing composite comprising inorganic powder encapsulated with a crosslinked carboxyl polymer
AssigneeKuraray Co., Ltd.
InventorsTetsuo Murakami, Hirotoshi Miyazaki, Hiroshi Harima
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Abstract
A water absorbing composite comprises an inorganic powder, and a highly absorbent resin covering the whole surfaces of the individual particles of the inorganic powder. The resin is obtained by reacting with a basic substance a polymer containing as a monomeric constituent an .alpha.,.beta.-unsaturated compound having in its molecule one or two carboxyl groups, or one or two other groups convertible to a carboxyl group or groups, and by crosslinking the reaction product with a polyamine. The composite is useful as a water retaining agent for agriculture and horticulture, or as a dehydrating agent for oil.
Claims16
A water absorbing composite comprising:
- an inorganic powder;
- and
- a highly absorbent resin;
- wherein said highly absorbent resin covers totally the surfaces of the individual particles of said powder, and
- wherein said resin is obtained by reacting a basic substance with a polymer containing at least 40 mol % of repeating monomeric units of an .alpha.,.beta.-unsaturated compound having in its molecule one or two carbonyl groups, on one or two other groups convertible to a carboxyl group or groups, and then crosslinking the reaction product with a polyamine.
Dependencies are inferred from the claim text.