Additives compositions useful in particular for improving the cold filterability properties of oil middle distillates
US4664676A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 10, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Jul 10, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/2364
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Additive compositions, useful in particular for improving the cold filterability properties of oil middle distillates, comprise: PA0 (A) at least one ethylene polymer; and PA0 (B) at least one polymeric compound resulting from the condensation of at least one compound comprising a primary amine group, of formula EQU R--Z[(CH.sub.2).sub.n NH].sub.m H or HO--CH.sub.2 --R"--NH.sub.2 PA0 wherein R is an alkyl from C.sub.1 to C.sub.30, Z is --NH--, --NR'-- or --O--, R' being a C.sub.1 -C.sub.30 alkyl, n an integrer from 2 to 4 , m an integrer from 1 to 4 (or zero when Z is --NH--), R" is a C.sub.1 -C.sub.18 alkylene, with a copolymer of a linear .alpha.-olefin, of an unsaturated .alpha., .beta.-dicarboxylic compound and of an alkyl ester of an unsaturated monocarboxylic acid, or a vinyl ester of a saturated monocarboxylic acid. These additive compositions, used for example at concentrations from 50 to 500 g/m.sup.3, have a synergic effect on the filterability limit temperature of the middle distillates, particularly gas-oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.