Methods and compositions for producing hydrogel capsules coated for low permeability and physical integrity
US8663671B2 · kind B2 · utility
2Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2009 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Jan 26, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23V2002/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Methods and compositions for producing hydrogel capsules enveloped with at least one coating layer is disclosed. The coating formulations deposited on the surface of the capsules can improve the physical integrity and the water-retention properties of the alginate beads. The coating formulations can be sequentially applied in various combinations to obtain desirable properties, such as improved physical integrity, mechanical strength, and low permeability, that can extend the shelf-life of the capsules when incorporated into various consumer products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.