Glass-like polysaccharide useful as absorbent for liquids
AssigneeGroupe Lysac Inc.
InventorsSerge Huppé, Marie-Elise Maheux, Stéphane Chevigny, Francois Quirion
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Abstract
A particulate absorbent, for the absorption of liquids, comprising particles selected from the group consisting of particles of glass-like polysaccharides and of particles of glass-like polysaccharides occluding, in their internal structure, at least one surfactant, said particles: having a size of up to 620 μm; being at least 70% of a glass-like type structure; and being: 30 to 45% of a size comprised between 620 and 420 μm; 35 to 55% of a size comprised between 420 and 210 μm; and 5 to 25% of a size up to 210 μm. These particulate absorbent is non-hygroscopic, hypoallergenic and biodegradable and useful particularly in biodegradable diapers.
Claims12
A method for the absorption of a liquid comprising contacting a liquid with a particulate absorbent, said particulate absorbent comprising particles of glass-like polysaccharides, said particles:
- having a size up to 620 μm;
- being at least 70% by weight of a glass-like type structure;
- and
- being:
- 30 to 45% by weight of a size comprised between 420 and 620 μm;
- 35 to 55% by weight of a size comprised between 210 and 420 μm;
- and
- 5 to 25% by weight of a size up to 210 μm.
A method for the absorption of a liquid comprising contacting a liquid with a particulate absorbent, said particulate absorbent comprising particles of unmodified glass-like polysaccharides wherein said particles have a size of up to 620 μm.
Dependencies are inferred from the claim text.