5,6-0-alkylidene glucono-1(4)-lactones and derivatives, processes for their preparation and uses thereof
US6251937A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1998 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Apr 13, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D317/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to cleavable surfactants of formula: ##STR1## in which R' and R, which may be identical or different, represent a hydrogen atom or a linear or branched, saturated or unsaturated alkyl radical, the sum of the carbon atoms of R' and R being between 5 and 42. The invention also relates to the corresponding derivatives obtained by alkaline hydrolysis or amidation. The invention furthermore relates to the preparation of these surfactants from glucono-1(5)-lactone and a compound of formula R--CO--R' in the presence of an acid catalyst, R and R' having the meaning given above. The surfactants are used in particular in emulsion polymerization and in the field of cosmetics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.