Glass-like polysaccharide useful as absorbent for liquids
US6444653B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | May 11, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2303/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 &mgr;m;being at least 70% of a glass-like type structure; andbeing:30 to 45% of a size comprised between 620 and 420 &mgr;m;35 to 55% of a size comprised between 420 and 210 &mgr;m; and5 to 25% of a size up to 210 &mgr;m.These particulate absorbent is non-hygroscopic, hypoallergenic and biodegradable and useful particularly in biodegradable diapers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.