Particle with substituted polyvinyl alcohol coating
US6872696B2 · kind B2 · utility
8Cited by
17References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2001 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Sep 12, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides an improved coating material for use with particles, such as enzyme granules, and the like. In particular, the present invention provides a modified PVA, as well as particles or granules that include such coating. The PVA is modified by substituting hydrophilic moieties for the hydroxyl or alcohol groups of the PVA. Substitution may be achieved with hydrophilic acids, amines, thiols, or combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.