Condensation products of alkylphenols and aldehydes, and derivatives thereof
US5620949A · kind A · utility
22Cited by
20References
51Claims
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Key dates
| Filing date | Dec 13, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Dec 13, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The reaction product of a hydroxyaromatic compound, at least some of the units of which are hydrocarbyl-substituted, a carboxy-substituted aldehyde, and an aldehyde other than a carboxy-substituted aldehyde, provides an additive for lubricants as well as an intermediate for further reaction with amines, alcohols, or neutralization to form a salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.