Water absorbing starch resins
AssigneeSanyo Chemical Industries, Ltd.
InventorsFusayoshi Masuda, Kazuo Nishida, Akira Nakamura
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Abstract
A highly water-absorbent resin is produced by polymerizing (A) starch or cellulose, (B) at least one monomer having a polymerizable double bond which is water-soluble or becomes water-soluble by hydrolysis and (C) a crosslinking agent, and subjecting, if necessary, the resulting product to hydrolysis.
Claims21
A process for producing a water-absorbing resin which comprises polymerizing (a) at least one of natural starch and .alpha. starch, (b) at least one monomer having a single polymerizable double bond which is a water-soluble or becomes water-soluble by hydrolysis, and (c) a crosslinking agent, and if the monomer (b) is one which becomes water soluble by hydrolysis, thereafter subjecting the resulting product to hydrolysis.
Dependencies are inferred from the claim text.