Novel carboxylic acid acylating agents, derivatives thereof, concentrate and lubricant compositions containing the same, and processes for their preparation
US4234435A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1979 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | Feb 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Carboxylic acid acylating agents are derived from polyalkenes such as polybutenes, and a dibasic, carboxylic reactant such as maleic or fumaric acid or certain derivatives thereof. These acylating agents are characterized in that the polyalkenes from which they are derived have a Mn value of about 1300 to about 5000 and a Mw/Mn value of about 1.5 to about 4. The acylating agents are further characterized by the presence within their structure of at least 1.3 groups derived from the dibasic, carboxylic reactant for each equivalent weight of the groups derived from the polyalkene. The acylating agents can be reacted with a further reactant subject to being acylated such as polyethylene polyamines and polyols (e.g., pentaerythritol) to produce derivatives useful per se as lubricant additives or as intermediates to be subjected to post-treatment with various other chemical compounds and compositions, such as epoxides, to produce still other derivatives useful as lubricant additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.