Process for the preparation of highly concentrated free-flowing aqueous solutions of betaines
US5464565A · kind A · utility
8Cited by
7References
7Claims
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Key dates
| Filing date | Oct 11, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Oct 11, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of highly concentrated free-flowing aqueous solutions of betaines, which is characterized in that at least one of the compounds of the general formula (I) ##STR1## is added to the reaction mixture before or during the quaternization reaction; wherein R, R.sup.1, R.sup.2, are each C.sub.1 -C.sub.10 alkyl, optionally substituted with hydroxyl, and n is 1-3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.