Preparation of solutions of betaine
US6046356A · kind A · utility
1Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1999 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Mar 5, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C227/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Betaine is produced by the oxidation of a choline salt in the presence of a base and a supported noble metal catalyst at temperatures from about 20.degree. C. to 100.degree. C. and pressures from atmospheric to about 100 psi. This process is advantageous over prior processes for the production of betaine in that no amine halocarboxylate contaminants are produced by this reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.