.alpha.-amino-substituted acetic acids or acid salts and their use in cosmetics
US5869712A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1995 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Jun 19, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C231/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
.alpha.-Amino-substituted acetic acids or acid salts of formula ##STR1## where R represents a hydrogen atom or an alkyl or alkoxy group X represents a hydrogen atom, an alkali metal or alkaline-earth metal or an ammonium residue characterized in that they are totally free of haloacetic acid and alkali metal halide. They are capable of being obtained by reaction, under hot conditions, of glyoxal, or of a precursor of glyoxal, with a secondary amine or one of its salts of formula ##STR2## where R represents a hydrogen atom or an alkyl or alkoxy group, optionally followed by hydrolysis. They may be used as amphoteric surface-active agents for the manufacture of cosmetic compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.