Borated derivatives of oil-soluble Mannich bases in combination with coadditive hydrocarbons are flow improvers for middle distillate fuel oils
US4140492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1977 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Sep 26, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/303
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Borated derivatives of C.sub.8 to C.sub.40 hydrocarbyl substituted Mannich bases such as those derived from the condensation reaction of a C.sub.8 -C.sub.40 alkyl substituted hydroxy aromatic compound (said alkyl preferably having a linear chain of 16 to 22 carbons), an aldehyde and a mono (C.sub.2 -C.sub.3 alkanol) amine, preferably wherein the molar ratios of said aromatic to said aldehyde to said amine is about 1 to 0.9-1.4 to 0.9-1.4, respectively, are useful in combination with a coadditive hydrocarbon such as an amorphous hydrocarbon or a hydrogenated polybutadiene in improving the cold flow properties of distillate hydrocarbon oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.