Compositions for coating feeding stuff additives intended for ruminants and feeding stuff additives thus coated
US4876097A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1987 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Sep 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S426/807
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition for coating a biologically active substance which is stable in a medium in which the pH is greater than or equal to 5 and which permits the release of the active substance in a medium in which the pH is less than or equal to 3.5, comprises a film-forming, water-insoluble binder which possesses controlled hydrophilicity and is optionally slightly sensitive to pH variations, and a substance which is sensitive to pH variations (e.g. an inorganic filler, simple aminated substance, basic polymer or copolymer, chitosan). Pellets for feeding to ruminants consist of a core containing the biologically active substance, e.g. methionine or lysine, coated with this substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.