Multifunctional additive composition for cold process treatment of middle distillates
US6623536B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/221
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a composition of mulifunctional additives for cold process treatment obtained by reacting carboxylic compounds with amine compounds, characterized in that it contains at least 50 wt. % of a mixture consisting of 10 to 90 wt. % of an additive (AB) of a carboxylic compound (A) selected among maleic and succinic anhydrides, corresponding acids and esters with a polyalkylamine (B) and 90 to 10 wt. % of an additive (CD) obtained by reacting a copolymer (C) obtained by reacting a first unsaturated carboxylic acid with an alkylated ester of a second unsaturated carboxylic acid, identical to or different from the first, of general formula (II) R1R2C═CR3COOR4 wherein R1 and R2, identical or different, being hydrogen, a linear or branched C1-C20 alkyl radical; R3 is hydrogen or a linear or branched alkyl group with not more than three carbon atoms and R4 is hydrogen or a C1-C25 radical, with N-alkylpolyalkylenepolyamine (D).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.