Methylene bis-phenol alkanoic acid compounds
US3954808A · kind A · utility
38Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1973 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Nov 1, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2219/089
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel compounds, useful as intermediates in the preparation of lubricant additives, are described by specified general formulae and as condensation products of (i) an alkyl-substituted monohydric phenol, phenol sulphide or alkylene bis-phenol in which the alkyl substituent contains at least 8 carbon atoms and (ii) a carbonyl-substituted compound selected from the group consisting of glyoxylic acid, pyruvic acid, levulinic acid, 3-oxoglutaric acid, 2-oxoglutaric acid and esters of such acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.