Process for the preparation of aqueous solutions of betaine
US5895823A · kind A · utility
2Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1998 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Jan 30, 2018 |
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 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.