Process for making starch ethers
US4906745A · kind A · utility
1Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1989 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Mar 8, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B31/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the dry etherification of granular starch is disclosed. The process is carried out in the presence of an alkaline catalyst and water, and in the presence of an organic acid in the solid state, which organic acid has a solubility at 25.degree. C. ranging from 0.2 to 5 g in 100 g water. Examples of suitable organic acids are fumaric acid and adipic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.