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| Number | Title | Issue Date |
| 7691158 | Hydrocarbon fuel additives and fuel formulations exhibiting improved combustion properties Fuel additives, fuel formulations, and processes for their preparation and use are provided. The additives improve the combustion properties of hydrocarbon fuels. The enhanced combustion indicates reductions in certain emissions. ... | 04/06/2010 |
| 7262256 | Polycarboxylic acid mixture A polycarboxylic acid mixture comprising 80% by weight or more of 1,3,6-hexanetricarboxylic acid, wherein the polycarboxylic acid mixture has a psychometric lightness L-value of 98 or more, a psychometric chroma a-value of from −2.0 to 2.0 and a psychometric chrom... | 08/28/2007 |
| 7252690 | Fuel composition This invention is a fuel composition having a sulphur content of ≦50 ppm by weight and comprising ≧50 ppm by weight of at least one fused polycyclic aromatic compound which has at least one hetero-atom selected from O and N either (a) as a heterocyclic group, or... | 08/07/2007 |
| 7250065 | Fuel compositions containing propoxylate Fuel compositions for internal combustion engines, comprising a principle amount of a liquid hydrocarbon fuel and an amount, which has a cleaning effect, of at least one propoxylate additive of the formula I wher... | 07/31/2007 |
| 7165512 | Method for controlling compression ignition internal combustion engine The present invention provides a method for controlling a compression ignition internal combustion engine, which can easily cope with a wide range of demand load with the use of a single fuel. The method includes: providing fuel 2 containing an ignition enhan... | 01/23/2007 |
| 7112230 | Fuels compositions for direct injection gasoline engines Injector deposits in a direct injection gasoline engine are reduced by providing as fuel for the operation of said direct injection engine a fuel composition comprising a fuel-soluble compound having the formula (I): | 09/26/2006 |
| 7041738 | Cold flow improvers for fuel oils of vegetable or animal origin The present invention provides an additive for improving the cold flow properties of vegetable or animal fuel oil. The additive comprises A) a copolymer of ethylene and 8–21 mol % of at least one acrylic or vinyl ester having a C1–C1... | 05/09/2006 |
| 7017530 | Method for controlling compression ignition internal combustion engine The invention provides a method for controlling a compression ignition internal combustion engine, which can easily deal with a wide range of demand loads with a single fuel. The compression ignition internal combustion engine includes a fuel containing an ignition ... | 03/28/2006 |
| 7014667 | Preparation of additive mixtures for mineral oils and mineral oil distillates The present invention provides a continuous process for preparing additive mixtures for mineral oils and mineral oil distillates, comprising A) a cold flow improver for middle distillates, and at least one further component selecte... | 03/21/2006 |
| 6676715 | Diesel fuel stabilizer There is provided use of a thermal stabiliser for increasing the thermal stability of a cetane improver in a fuel composition comprising (i) a fuel, and (ii) the cetane improver wherein the thermal stabiliser is a compound of the formula wherein H is a gr... | 01/13/2004 |
| 6656237 | Fuel composition with improved lubricity performance This invention provides a fuel composition having a sulphur content of not more than 50 ppm by weight and comprising at least 50 ppm based on the total weight of the fuel composition of at least one fused polycyclic aromatic compound which comprises at le... | 12/02/2003 |
| 6565616 | Copolymer blends and their use as additives for improving the cold flow properties of middle distillates The invention relates to blends of copolymers containing structural units of olefins, derivatives of dibasic carboxylic acids and, if required, polyolefins and, structural units of ethylene and vinyl esters of tertiary carboxylic acids, and their use as a... | 05/20/2003 |
| 6540796 | Use of trioxepans in ignition improved fuels The invention relates to use of trioxepan compounds of formula I ##STR1## with R1-3 being independently selected from substituted or unsubstituted hydrocarbyl groups in the process to make fuels with improved ignition properties. Preferably, R | 04/01/2003 |
| 6387512 | Grey coloring photochromic fused pyrans A photochromic grey coloring 2H-naphtho[1,2-b]pyran of formula (1) wherein R1 is selected from mono-, di- or poly-substituted aryl groups, mono-, di- or poly-substituted naphthyl groups and mono-, di- or poly-substituted heteroaryl groups, wher... | 05/14/2002 |
| 6339163 | Tetrahydrofuran derivatives that can be used as detergent compositions for gasoline-type fuels Compositions that comprise at least one compound that corresponds to general formula (I): ##STR1## in which n is a number from 0 to 20; R1, R2, R3 and R4 each represent a hydrogen atom or a hydrocarbon radical, for example alkyl, with 1 to 30 carbon ... | 01/15/2002 |
| 6296677 | Liquid polyfunctional additives for improved fuel lubricity The lubricity (anti-wear properties) of fuels, for example hydrocarbon fuels, oxygenated fuels or mixtures thereof, particularly diesel or aviation fuels having reduced sulphur and/or aromatic content for compliance with regulator requirements, is improve... | 10/02/2001 |
| 6261327 | Additive concentrates for rapidly reducing octane requirement The present invention is directed to an additive concentrate for reducing octane requirement comprising a cyclic amide alkoxylate compound of the formula I: ##STR1## wherein x is from 3 to 11; y is from 1 to 50; R1 and R2 are each ... | 07/17/2001 |
| 5912189 | Compositions containing reaction product of a cyclic compound containing both a nitrogen atom and a carbonyl group, an aldehyde or ketone, and an etheramine The present invention is directed to a composition containing the reaction product of: (A) a cyclic compound containing a 5, 6, or 7-member ring, the ring containing at least one nitrogen and at least one carbonyl group, at least one carbonyl group being ... | 06/15/1999 |
| 5912213 | Substituted carboxylic acylating agent compositions and derivatives thereof for use in lubricants and fuels Substituted carboxylic acylating agents formed by reacting an olefin with a carboxylic reactant are further reacted with -ଲ unsaturated carboxylic compositions to form substituted carboxylic acylating agents. The substituted carboxylic acylat... | 06/15/1999 |
| 5880072 | Wear reducing compositions and methods for their use Compositions for reducing wear and friction of rubbing surfaces including mixtures of a cyclic amide and a monoester formed by reacting a dicarboxylic acid and a polyol in substantially equimolar amounts where the dicarboxylic acid is a dimer of an unsatu... | 03/09/1999 |
| 5851964 | Wear reduction using cyclic amide compounds Method of reducing wear between rubbing surfaces by contacting a surface of a solid material with a cyclic amide before and/or while it is being rubbed against another surface.... | 12/22/1998 |
| 5837867 | Fuel compositions The present invention is directed to the use of cyclic amide alkoxylate compounds as additives in fuel compositions having a major amount of a mixture of hydrocarbons in the gasoline boiling range and a minor amount of one or more cyclic amide alkoxylate ... | 11/17/1998 |
| 5730762 | Gas oil (law451) A gas oil according to the present invention comprises a gas oil fraction, and has a sulfur content not higher than 0.05 wt %, and either or both of (1) a content of bicyclic and higher aromatic hydrocarbons in a range of from 3.5 wt % to 15 wt %, bicycli... | 03/24/1998 |
| 5518510 | Low-sulfur diesel fuels containing organo-metallic complexes This invention relates to low-sulfur diesel fuels which are useful with diesel engines equipped with exhaust system particulate traps. These fuels contain an effective mount of an organometallic complex to lower the ignition temperature of exhaust particl... | 05/21/1996 |
| 5507843 | Fuel compositions The present invention is directed to the use of multiple cyclic nitrogen-containing alkoxylate compounds as additives in fuel compositions. The invention is also directed to the use of these multiple cyclic nitrogen-containing alkoxylate compounds for dec... | 04/16/1996 |
| 5472457 | Gasoline additives containing alkoxylated imidazo-oxazoles Compounds with general formula ##STR1## where R1 represents a hydrogen atom or a hydrocarbon group containing 1 to 40 carbon atoms. R2 represents a hydrogen atom or a hydrocarbon group containing 1 to 12 carbon atoms, A, B, and ... | 12/05/1995 |
| 5460634 | Fuel oil treatment An additive comprising an oil-soluble stable free radical, such as a nitroxide, or a precursor therefor, is used in a fuel oil to reduce, on combustion of the fuel oil, one or more of particulate emissions, hydrocarbon emissions, carbon monoxide emissions... | 10/24/1995 |
| 5460633 | Fuel oil treatment An additive comprising an oil-soluble polymer of a C2 to C6 mono-olefin such as polyisobutylene, which polymer has a molecular weight of less than about 500, is used in a fuel oil to reduce, on combustion of the fuel oil, one or more of particulate emissi... | 10/24/1995 |
| 5352251 | Fuel compositions The present invention is directed to the use of cyclic amide alkoxylate compounds as additives in fuel compositions having a major amount of a mixture of hydrocarbons in the gasoline boiling range and a minor amount of one or more cyclic amide alkoxylate ... | 10/04/1994 |
| 5348561 | Fuel oil compositions Sediment and color formation in distillate fuels are reduced by the addition of a quaternary ammonium compound comprising a cation in which the ratio of carbon atoms to quaternary nitrogen atoms is not more than 10:1 and an anion which is derived from an ... | 09/20/1994 |
| 5324334 | Macrocyclic polyamide and polycyclic polyamine multifunctional fuel additive compositions There are disclosed macrocyclic and polycyclic polyamine lubricating oil additives formed by cyclodehydration of reaction products of hydrocarbon substituted succinic anhydrides or carboxylic acids with poly 3-amino propyl compounds or by acylation of mac... | 06/28/1994 |
| 5286265 | Carbamates, their production and use as fuels additives The invention relates to an internal combustion fuel concentrate comprising: (a) from 1 to 95% of a chlorine-free carbamate prepared by reacting a carbamate of formula ##STR1## with a compound of the formula R OH (VI) in the presence of either a ... | 02/15/1994 |
| 5266080 | Methanol fuel containing flame luminosity agent The flame luminosity of a methanol fuel is appreciably enhanced by the addition thereto of at least one flame luminosity enhancing agent selected from the group consisting of azine dye, triarylmethane dye, fluorescein dye, imine dye and anthraquinone dye,... | 11/30/1993 |
| 5199960 | Sulfur coupled hydrocarbyl derived mercaptobenzothiazole adducts as multifunctional antiwear additives and compositions containing same Sulfur-coupled hydrocarbyl derived mercaptobenzothiazole adducts have been found to be effective multifunctional antiwear additives for fuels and lubricants.... | 04/06/1993 |
| 5126477 | Carbamates, their production and use as fuels additives A process for the production of a carbamate suitable for use as a detergent additive to internal combustion engine fuels which process comprises reacting either ammonia, a primary amime or a secondary amine with a dihydrocarbyl carbonate in the presence a... | 06/30/1992 |
| 5103041 | Carbamates, their production and use as fuels additives A process for the production of a carbamate having formula (I), wherein X and Y are independently either hydrogen, a hydrocarbyl group or a hetero-substituted hydrocarbyl group or the group of formula (II), wherein Z is either a divalent hydrocarbyl, a su... | 04/07/1992 |
| 4948386 | Middle distillate containing storage stability additive Additives formed by reaction of polyacids such as 1,3,6-hexane tricarboxylic acid and polyisobutenyl succinimide of a polyamine are effective in improving the storage stability of middle distillate fuels.... | 08/14/1990 |
| 4866141 | Lactone modified, esterfied or aminated additives useful in oleaginous compositions and compositions containing same C5 -C9 lactone derived materials are made by simultaneously reacting (a) a C5 -C9 lactone with (b) a polyamine, a polyol or an amino alcohol and (c) a hydrocarbyl substituted C4 -C10 monoun... | 09/12/1989 |
| 4866139 | Lactone modified, esterified dispersant additives useful in oleaginous compositions Poly(C5 -C9 lactone) adducts are made by reacting a C5 -C9 lactone with a post reacted hydrocarbyl substituted C4 -C10 monounsaturated dicarboxylic acid producing material, e.g., a polyisob... | 09/12/1989 |
| 4866140 | Lactone modified adducts or reactants and oleaginous compositions containing same C5 -C9 lactone based adduct materials are made by reacting a C5 -C9 lactone with a polyamine, a polyol or an amino alcohol to form a lactone adduct intermediate, and thereafter reacting the intermediate with a h... | 09/12/1989 |
