Abstract:
The invention provides a fuel additive compound represented by the general formula (I): wherein n is zero or an integer from 1 to 20 and in each succinic acid moiety one of R 1 and R 3 is a C 3 -C 80 internal olefin moiety, and the other of R 1 and R 3 is hydrogen, and R 2 is a linking group, preferably the residue of a polyhydroxy alcohol. Additive compositions containing such compounds have low viscosity and are useful in increasing the lubricity of middle distillate fuels.
Abstract:
The present invention is directed to the use of sulfur-containing alkoxylate compounds as additives in fuel compositions having a mixture of a major amount of hydrocarbons in the gasoline boiling range and a minor amount of one or more of these compounds. The invention is also directed to the use of these compounds for decreasing intake valve deposits.
Abstract:
An additive concentrate for use in fuels, especially in gasoline for internal combustion engines, comprising (a) 0.2 to 10 wt.% ashless friction modifier which is liquid at room temperature and pressure selected from (i) n-butylamine oleate or derivatives thereof, (ii) a substance comprising tall oil fatty acid or derivatives thereof, and (iii) mixtures of (i) and (ii); (b) 10 to 80 wt.% deposit inhibitor, and (c) carrier fluid. The particular selection of friction modifier (a) enables a stable additive concentrate to be formulated without the need for additional solubilising agent for the friction modifier, whilst containing sufficient friction modifier to achieve a significant benefit in friction loss, when incorporated in gasoline used to fuel an internal combustion engine, and hence an improvement in fuel economy.
Abstract:
Disclosed herein is a fluid flow improver comprising a branched dendritic core comprising a first quaternary carbon center bonded to four second carbon atoms, wherein at least three of the four second carbon atoms are individually bonded to one or more chain extender ligands to produce the branched dendritic core, wherein the branched dendritic core has greater than or equal to about 16 terminal hydroxyl groups, and wherein at least one of the terminal hydroxyl groups is esterified with at least one carboxylic acid moiety comprising from 6 to 30 carbon atoms. Methods of inhibiting deposition of paraffin and reducing pour point temperature of a hydrocarbon fluid are also disclosed.
Abstract:
Additives which improve the low-temperature properties of distillate fuels are oligomeric/polymeric reaction products consisting of cross-linked anhydride and cross-linked epoxide (or their corresponding acid/diol equivalents), with optional termonomers.
Abstract:
An additive composition for improving the cold flow properties of crude oils or fuel oils such as middle distillate fuel oils comprises an addition product or condensate cold flow improver additive in combination with a demulsifier.