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US 7,867,623 B2Granted
Polymeric particles capable of absorbing blood and/or body fluids
AssigneeBASF SE
InventorsAntje Ziemer, Bernhard Steinmetz, Michael Demarco, Monika Medelnick
Life of this patent
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Abstract
Polymeric particles capable of absorbing blood and/or body fluids, the polymeric particles being coated with at least one surfactant and with at least one solvent, are produced and used for absorbing blood and/or body fluids, especially in hygiene articles.
Claims7
Polymeric particles capable of absorbing blood and or body fluids comprising
- a) at least one interpolymerized ethylenically unsaturated acid-functional monomer,
- b) at least one interpolymerized crosslinker,
- c) optionally one or more interpolymerized ethylenically and/or allylically unsaturated monomers copolymerizable with a),
- d) optionally one or more water-soluble polymers onto which said monomers a), b), and optionally c) are at least partially grafted, and
- e) optionally one or more reacted postcrosslinkers,
- wherein said polymeric particles are coated with at least one surfactant and with at least one solvent of the general formula (I)
- wherein
- R1 is C1-C6-alkyl with or without halogen substitution,
- R2 and R3 are independently hydrogen or methyl, and
- n is an integer from 1 to 5,
- wherein the polymer particles are further coated with aluminum cations.
8 more elements
Dependencies are inferred from the claim text.