Polymers having terminal hydroxyl, aldehyde, or alkylamino substituents and derivatives thereof
US5880219A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Apr 8, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2217/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polymer having a terminal hydroxyl, aldehyde or alkylamino substituent which may be used directly or in a derivative form as a dispersant for both fuel and lubricating oil compositions, wherein the polymer has a M.sub.n of about 300 to 10,000, and is derived from a polyolefin which is derived from a polyene (diene, e.g.), monomer of the formula H.sub.2 C.dbd.CHR.sup.4, wherein R.sup.4 is hydrogen or a straight or branched chain alkyl radical. Preferably, the polyolefin has at least about 30% terminal vinylidene unsaturation. Particularly desirable amine derivatives can be formed by either a single step aminomethylation process or a two step hydroformylation and reductive amination process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.