Preparation of super absorbent polymers
OwnerGeoffrey William Barnettinventor
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Abstract
A process for preparing coated water-absorbing compositions, especially for use in personal hygiene products, comprises coating a super-absorbent polymeric material with an aqueous coating medium which besides water comprises at least one (or more) polyhydric alcohol(s) having hydroxyl substituents on non-adjacent carbon atoms, the said medium being substantially free of organic solvents.
Claims20
A process for preparing a coated water-absorbing composition, which process comprises coating a super-absorbent polymeric material with an aqueous coating medium that besides water comprises at least one polyhydric alcohol having hydroxyl substituents on non-adjacent carbon atoms, and wherein the medium is substantially free of an organic solvent.
A personal hygiene product which comprises a coated water-absorbing composition prepared by coating a super-absorbent polymeric material with an aqueous coating medium that besides water comprises at least one polyhydric alcohol having hydroxyl substituents on non-adjacent carbon atoms, and wherein the medium is substantially free of an organic solvents.
A coated water-absorbing composition which comprises a super-absorbent polymeric material crosslinked with at least one polyhydric alcohol having hydroxyl substituents on non-adjacent carbon atoms.
Dependencies are inferred from the claim text.