Abstract:
The present invention relates to an additive for a fuel for the neutralization of SO2 and/or SO3 in the exhaust gases of internal combustion engines operated with the fuel, and a method for the neutralization of SO2 and/or SO3 in the exhaust gases of internal combustion engines. According to the invention, the additive contains one or more metal compounds soluble in the fuel. In the combustion of the fuel these compounds form stable sulfates which are present in solid particles in the exhaust gas. The method of the invention is characterized in that one or more of these additives are added to the fuel and the combustion of the fuel takes place in an oxidizing atmosphere.
Abstract:
A poisoning-resistant catalyst for a catalytic converter, includes a support, a noble metal catalytic component deposited on the support, and a poisoning-preventive layer formed on the side of the catalytic component exposed to an exhaust gas, said poisoning-preventive layer having a compound containing at least one element selected from the Group IIa elements of the periodic table.
Abstract:
A rapid, batch Koch carbonylation/functionalization reaction of at least one polymer olefin, carbon monoxide, and an aliphatic or aryl alcohol in the presence of an acid catalyst with either an alcohol:polymer olefin mole ratio .gtoreq.1:1, or an acid catalyst:polymer olefin mole ratio .gtoreq.0.9:1, or both, and recovering at least 80% functionalized polymer which is predominantly ester.
Abstract:
A Koch functionalized product which is the reaction product of at least one polymer having a number average molecular weight of at least 500 and at least one ethylenic double bond per polymer chain, with carbon monoxide and a nucleophilic trapping agent. The invention includes functionalized polymer, derivatives thereof and methods of making the same.
Abstract:
An oil soluble dispersant additive useful in oleaginous compositions selected from fuels and lubricating oils comprising the reaction products of:(i) at least one intermediate adduct comprised of the reaction products of(a) at least one polyanhydride, and(b) at least one member selected from the group consisting of polyamines, polyols, and amino alcohols; and(ii) at least one member selected from the group consisting of(a) at least one long chain hydrocarbyl substituted C.sub.4 -C.sub.10 dicarboxylic acid producing material;(b) at least one long chain hydrocarbyl substituted hydroxy aromatic material and at least one aldehyde; or(c) at least one aldehyde and at least one reaction product of a hydrocarbyl substituted C.sub.3 -C.sub.10 monocarboxylic or C.sub.4 -C.sub.10 dicarboxylic acid or anhydride and an amine substituted hydroxy aromatic compound.Also disclosed are oleaginous compositions, particularly lubricating oil compositions, containing these oil soluble dispersants.
Abstract:
The invention relates to highly reactive fuel compositions primarily intended for supersonic combustion ramjet engines. In particular, the invention provides highly reactive fuel compositions capable of efficient oxidation and thrust production even within the low combustor residence time of a supersonic combustion ramjet engine. The fuel compositions comprise specific blends of a major fuel component and an additive which, on pyrophoric combustion thereof, produces sufficient heat energy to spontaneously ignite and burn the major fuel component at a substantially increased rate.
Abstract:
Aromatic compound-Group VIB metal tricarbonyl complexes are prepared by reacting an aromatic compound with a Group VIB metal hexacarbonyl in a polar solvent. (Deming's revised Periodic Table is used throughout). Solvents specified include tetrahydrofuran, ethylene glycol dimethyl and diethyl ethers, diethylene glycol diethyl and dibutyl ethers, ethylene glycol monomethyl and monoethyl ethers, isoamyl alcohol, methyl alcohol, ethyl acetate, amyl acetate, acetic acid, dimethylformamide and acetonitrile. The reaction is facilitated by the presence on the aromatic ring of electron-repelling substitutents such as dimethylamino, methoxy, butoxy, ethoxy, substituted and unsubstituted amines, hydroxyl and alkyl groups. These substituents should have a meta sigma constant (as defined) less than +0.50. A list of typical complexes which may be prepared is given. The aromatic residue in the complex may be reacted to produce aromatic derivative complexes, thus hydroxybenzene chromium tricarbonyl can be methylated or acetylated to the anisole and phenylacetate derivatives, aniline complexes may be converted to acetanilide complexes and complexes such as benzoic acid chromium tricarbonyl and phenylacetic acid chromium tricarbonyl can be prepared by alkaline hydrolysis of the corresponding esters. Where the aromatic ring is substituted, the substituents are more easily displaced by nucleophilic reagents than they are in the parent compound. Further the aromatic residue may be regenerated from the complex by thermal decomposition, by reaction with a more powerful ligand such as pyridine, triphenyl-phosphine, dimethyl-phenylarsine or other p-electron donors, or by reaction with carbon monoxide. Thus in Example XIV, chlorobenzene is reacted with chromium hexacarbonyl in dioxane to give chlorobenzene chromium tricarbonyl, which is reacted with sodium hydroxide and then with carbon monoxide to give phenol, chlorobenzene and chromium hexacarbonyl, Ex. XV describes the reaction of o-toluidine chromium tricarbonyl with carbon monoxide to give o-toluidine and chromium hexacarbonyl, and Ex. XVI the regeneration of p-dimethoxy benzene from p-dimethoxybenzene chromium tricarbonyl which was prepared from p-chloroanisole chromium tricarbonyl and sodium methoxide in tetrahydrofuran. Tris - (dimethylphenylarsine) chromium tricarbonyl is prepared (Ex. X) by reacting methylbenzene chromium tricarbonyl with dimethylphenylarsine, methylbenzene being regenerated.ALSO:Aromatic compound-Group VIb metal (Deming) tricarbonyl complexes may be used as additives to hydrocarbon fuels and lubricating oils. Typical compounds are benzene chromium tricarbonyl, o-cresyl methyl ether chromium tricarbonyl, acetophenone chromium tricarbonyl-many others are specified. When used as antiknock agents, scavengers (phosphorus compounds, halohydrocarbons), deposit modifying agents containing phosphorus or boron and other antiknock agents, e.g. tetraethyl lead, may also be present.ALSO:Aromatic compound-Group VIb (Deming) metal tricarbonyl complexes may be decomposed at above 400 DEG C. by heating in an inert atmosphere e.g. argon in order to deposit a film of the metal on a support such as glass, glass cloth, resins or other insulating materials. The deposition of chromium upon a glass cloth band by decomposition of benzene chromium tricarbonyl is described.