Borated polysaccharide absorbents and absorbent products
US4624868A · kind A · utility
45Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1985 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Sep 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31844
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Guar gum as an exemplification of cis-1,2-diol polysaccharides is first hydrated then thickened by cross-linking with borax and finally dried to powder to flake form, preferably by freeze drying. The resulting particles can absorb up to 100 times their weight or more of aqueous fluids such as urine. Absorbent articles, such as disposable diapers, bandages, and the like are formed with the borax-cross-linked guar gum as absorbent. In a preferred diaper the dry absorbent particles of the borax cross-linked guar gum are placed in the cells of a cellular or bubble-type substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.