Abstract: A benzoquinone and hydrocarbyl amine reaction product having detergent and corrosion inhibiting properties for fuel and lubricant compositions is provided.

Abstract: A primary hydrocarbyl alkoxy amino alkylene-substituted asparagine represented by the formula: ##STR1## in which R is a primary hydrocarbon radical having from about 8 to 24 carbon atoms and x has a value from 1 to 10 is provided and a motor fuel composition containing same.

Abstract: An improved oxygen scavenger for aqueous mediums is disclosed which comprises hydrazine-free solution of hydroquinone and mu-amine.

Abstract: A method for boiler water treatment to retard corrosion due to dissolved oxygen. Hydroquinone and certain related compounds are highly effective oxygen scavengers for use in boiler water and thereby effect reduction of corrosion resulting from dissolved oxygen.

Abstract: Oil-soluble 4-alkyl mono or 5-alkyl bicyclic oxazolidines, e.g. 1-aza-3,7-dioxabicyclo[3.3.0] octanes which are the reaction products of an aldehyde and an amino propane monol or diol are additives which feature activity in functional fluids, e.g. mineral oil base automatic transmission fluids, as copper alloy corrosion inhibitors.

Abstract: Poly(alkylene oxide) compositions are provided which exhibit excellent resistance to oxidative degradation and inhibit the corrosion of ferrous metals, which compositions have incorporated therein an effective amount of a mononuclear aromatic compound having at least one substituent nitro group.

Abstract: A corrosion inhibiting device including an extremely stable, man-made synthetic carrier having chemical and physical stabilities compatible with hostile and adverse environments for dispensing corrosion inhibiting chemicals, in virtually any ratio desired and/or required by the material to be protected from the corrosive environments, wherein the carrier has a multiplicity of sites, which are uniquely adaptable for solvent conveyance, carrier reception and carrier retention via solids entrapments, of amorphous and/or crystalline materials in multi-nucleated centers, and wherein the corrosion inhibitors located therein contain corrosion inhibitors which are classified and selected according to their vapor pressures.

Abstract: Rust-inhibiting compounds, especially for aqueous systems such as tool-lubricating emulsions for machine tools and which consist of amine salts of a number of monoaminoalkylene dicarboxylic acids are disclosed.These rust-inhibitors are used in combination with water and an alkanolamine.Examples and test results are given.

Abstract: A method of removing dissolved oxygen from boiler water which comprises adding to the water an oxygen scavenging amount of carbohydrazide.

Abstract: Described are acyl glycine oxazolines of the formula: ##STR1## where R is lauryl, C.sub.11 H.sub.23, oleyl or stearyl; and R' is hydrogen or lower alkyl. Also disclosed are motor fuel compositions in the gasoline boiling range containing a corrosion-inhibiting and detergent amount of the above compounds.

Abstract: A rust inhibitor comprising the reaction product of a hydrocarbylsuccinic anhydride in which the hydrocarbyl radical has from about 6 to 30 carbon atoms and an aminotriazole is provided. The rust inhibitor is effective in motor fuel and lubricating oil compositions.

Abstract: Poly(alkylene oxide) compositions are provided which exhibit excellent resistance to oxidative degradation and inhibit the corrosion of ferrous metals, which compositions have incorporated therein a small effective amount of a bridged dimer of a hydroxyl-substituted aromatic carboxylic acid and salts thereof of the general formula: ##STR1## wherein X is a chemically stable group selected from lower alkylene, sulfonyl, and amino groups, and a sulfur atom, and Y and Y' may be the same or different, and are a hydrogen atom, hydroxyl group, amino group, alkyl group, or sulfonyl group.

Abstract: Described are fuel compositions containing oxazolonium hydroxides as detergent and corrosion inhibitor additives.

Abstract: A diesel crankcase lubricant composition comprising a lubricating oil base and the reaction product of a hydrocarbyl succinic anhydride in which the hydrocarbyl radical has from 12 to 30 carbon atoms and 5-amino-triazole is provided.

Abstract: This invention relates to a composition comprising(1) an alkenyl or alkyl succinic acid or the anhydride thereof; and(2) a triester of about 3 moles of an alkenyl or alkyl succinic acid or the anhydride thereof and about 1 mole of a trialkanolamine;and to the use thereof as a corrosion inhibitor.

Abstract: This invention relates to quaternaries of halogen derivatives of alkynoxymethyl amines and uses thereof. These may be summarized by the following formulae: ##STR1## where R and R' are substituted groups such as alkyl, aryl, etc.; R" is an alkyldene group; and X is halogen and A is an anion; and ##STR2## where R, R' and R" having the same meaning as in (1) and Z is a bridging group, preferably hydrocarbon such as alkylene, alkinylene, alkenylene, arylene, etc.

Abstract: Aluminium polishing solutions containing phosphoric, nitric and sulphuric acids provide etched finishes if the proportion of sulphuric acid is increased. The invention inhibits such etching by addition to the bath of an aromatic ring compound in which at least 2 hetero atoms are conjugated with the ring such as benztriazole.

Abstract: Certain salts of polycarboxylic acids and amino compounds are useful as corrosion inhibitors in aqueous systems used in well-drilling operations. Typical such corrosion inhibitors are made from acids such as sebacic and azelaic acid and amino compounds such as ammonia, ethanol amine, di- and tri-ethanol amines and N,N-diethyl-ethanol amine.

Abstract: Corrosion of metals in contact with liquid systems is reduced by adding to the system a small amount of a hydrazine salt of an amido carboxylic acid containing at least one hydrophobic group. The hydrazine salt of the amido carboxylic acid is preferably used in combination with an ether amine or a quaternary ammonium compound. The hydrazine salt gives a substantial reduction of both general and localized corrosion and is particularly useful for preventing corrosion in different areas of oil recovery and in petroleum industry.

Abstract: Corrosion of metals in contact with liquid systems is reduced by adding to the system a small amount of a carboxylic acid containing an organic hydrophobic group in combination with a sulfite or bisulfite of an amine. Preferred carboxylic acids and preferred sulfites are amino and amido carboxylic acids and preferred sulfites are those of ether amines. Combinations of the two types of compounds are particularly useful for preventing corrosion in different areas of oil recovery and in petroleum industry.

Abstract: Corrosion of metals in contact with liquid systems is reduced by adding to the system a small amount of an amino carboxylic acid containing at least one hydrophobic group in combination with another nitrogen containing compound. The other compound is preferably an ether amine or a quaternary ammonium compound which also contain hydrophobic groups. The combination of substances is particularly useful for preventing corrosion in different areas of oil recovery and in petroleum industry.

Abstract: Tartarimides represented by the formula ##STR1## are disclosed, wherein R is a hydrocarbon-based radical having up to 150 carbon atoms. The disclosed tartarimides are useful as additives in lubricants and fuels.

Abstract: Benzazoles of the general formula ##STR1## and derivatives thereof; where X=O, S, NH and n is a number, for example 3-12 or greater, such as 3-5 or greater, and R is a substituted group, for example, a hydrocarbon or substituted hydrocarbon group, such as alkyl, etc. and n' is a number 0-3 or greater; and to use for such benzazoles as corrosion inhibitors.

Abstract: A non-petroleum based metal corrosion inhibitor, a process for preparing the inhibitor, a method of applying it to metal surfaces and advantages of the inhibitor and of surfaces which are coated with it are presented. The inhibitor is a solution of compounds mixed together in particular proportions to form a non-petroleum based coating for preventing, or inhibiting, the oxidation of metals. The solution is prepared from organic monobasic acids, a lubricant, a mixture of amines, and water. The solution is applied by spraying or rolling over the surface of steel or other metal. The coating inhibits oxidation of the metal surface and need not be removed from the surface prior to painting.

Abstract: A method of inhibiting corrosion in separation units of water-free petroleum and petrochemical hydrocarbon processing systems which comprises adding a compound corresponding to Formula I below either alone or in combination with a film-forming amine corrosion inhibitor to the hydrocarbon being processed:Formula IR--O--(CH.sub.2)nNH.sub.2,wherein n is 2 or 3 and R is a lower alkyl radical of not more than 4 carbon atoms.

Abstract: The present invention is drawn to ethylene polyamines in combination with certain alkanolamines as cold-end additives. More specifically, it has been discovered that if these additives are fed to the moving combustion gases of a combustion system which uses sulfur containing fuel and upstream of cold-end surfaces to be treated, the additive will travel along with the gases as vapor and/or liquid droplets and deposit on the cold-end surfaces. As a result, the amount of sulfuric acid corrosion of metallic cold-end surfaces is reduced.

Abstract: Improved brightness and corrosion resistance are imparted to metal surfaces such as zinc plated surfaces, by treatment with a non-toxic solution comprised of sulfuric acid, hydrogen peroxide and a silicate. Certain organophosphorus and organonitrogen compound additives further enhance the corrosion resistance.

Abstract: Metal corrosion inhibitor comprising (a) benzoic acid and/or a benzoate, (b) a trialkanolamine, (c) phosphoric acid and/or a phosphate, and (d) at least one selected from mercaptobenzothiazole, its salts, benzotriazole and tolyltriazole, which can exhibit excellent anti-corrosive property to various metals for a long term and can be diluted with an aqueous liquor and can be employed in combination with usual anti-freezing agents.

Abstract: This invention relates to a process of inhibiting corrosion which comprises adding an aqueous soluble form of a normally insoluble corrosion inhibitor to an aqueous system which converts the soluble corrosion inhibitor to an insoluble form which coats the metal with a corrosion inhibiting film.For example, a water insoluble heterocyclic amine used as a water soluble salt is dissolved in an aqueous system having a pH in excess of about 6 where the heterocyclic amine itself, i.e., in non-salt form, comes out of solution as a stable, fine dispersion which coats the metal with a uniform and tenacious corrosion inhibiting film.

Abstract: Quaternary polyvinyl heterocyclic compositions, as illustrated by polyvinyl pyridine and copolymers thereof, and their use as corrosion inhibitors which are particularly effective in acid systems.

Abstract: A material especially adapted for incorporation in a coating composition, for example, as a secondary pigment, and characterized in having corrosion inhibiting properties. The material consists of finely particulate material on which is coated a film of fatty amine or fatty amine salt. The material coated on the particles is characterized in having a high area to volume ratio and the properties thereof in respect of inhibiting corrosion are thereby enhanced. The particulate material is advantageously natural crystalline calcium carbonate.

Abstract: A process for preventing the corrosion of metals in aqueous systems by means of low-foam corrosion inhibitors consisting of alkanolamine salts of maleamic acids.

Abstract: A primary aliphatic hydrocarbon amino alkylene-substituted asparagine represented by the formula: ##STR1## in which R is a primary aliphatic hydrocarbon radical having from about 6 to 30 carbon atoms, R' is hydrogen or a methyl radical is provided and a motor fuel composition containing same.

Abstract: The present invention is drawn to ethylene polyamines in combination with certain alkanolamines as cold-end additives. More specifically, it has been discovered that if these additives are fed to the moving combustion gases of a combustion system which uses sulfur containing fuel and upstream of cold-end surfaces to be treated, the additive will travel along with the gases as vapor and/or liquid droplets and deposit on the cold-end surfaces. As a result, the amount of sulfuric acid corrosion of metallic cold-end surfaces is reduced.

Abstract: A detergent motor fuel composition is provided comprising a primary aliphatic hydrocarbon amino alkylene-substituted asparagine represented by the formula: ##STR1## in which R is a primary aliphatic hydrocarbon radical and R' is hydrogen or a methyl radical, and an N-primary alkyl-alkylene diamine represented by the formula:R,R'--N--C.sub.3 H.sub.6 --NH.sub.2in which R is a primary aliphatic hydrocarbon radical and R' is hydrogen or a methyl radical.

Abstract: Condensation product is prepared by condensing diphenylamine and 2-octanone in the presence of acid catalyst. The product is formulated with p,p'-dioctyldiphenylamine antioxidant and incorporated in lubricants for inhibition of degradation due to oxidation and corrosion.

Abstract: Compositions containing ether diamine and salts thereof with N-acylsarcosines are disclosed. The ether diamine salts of N-acylsarcosines have the formula:[R.sub.1 O(CH.sub.2).sub.3 NH(CH.sub.2).sub.3 NH.sub.2 ].[HO.sub.2 CCH.sub.2 (CH.sub.3)NOCR.sub.2 ]wherein R.sub.1 is an aliphatic group containing from about 6 to about 18 carbon atoms and R.sub.2 is an aliphatic group containing from about 8 to about 18 carbon atoms. Also disclosed are fuel oil compositions containing said ether diamine and salts thereof, and a method for inhibiting corrosion utilizing said ether diamine salts.

Abstract: Use of methoxypropylamine as a neutralizing amine in combination with hydrazine to prevent corrosion in steam condensate systems or in other low solids aqueous systems.

Abstract: The anti-rust properties exhibited by the aqueous fluids described herein are provided by one or more of the rust inhibitor additive composition prepared by reacting:(A) at least one aliphatic polycarboxylic acid acylating agent characterized by the presence within its structure of an aliphatic hydrocarbyl-substituent with(B) at least one hydroxy-substituted aliphatic amine, and(C) at least one basically reacting alkali metal compound.

Abstract: A method of reducing the amount of corrosion due to sulfuric acid on metal parts at the cold-end of a combustion system and in contact with combustion gases derived from the combustion of sulfur-containing fuel, said method comprising adding to the combustion gases an effective amount for the purpose of an ethylene polyamine additive.

Abstract: The invention provides novel mixtures of at least two aminoalkanols of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent a C.sub.1-21 alkyl and the sum of the carbon atoms in R.sub.1 and R.sub.2 is 6 to 22; and the R.sub.1 --CH--CH--R.sub.2 units are mixtures containing 8 to 24 carbon atoms of at least two compounds. The vicinal OH and NH.sub.2 substituents are uniformly distributed statistically along the chain. The mixtures are readily prepared from mixtures of C.sub.8 -C.sub.24 olefins by epoxidation followed by reaction with ammonia.The mixtures are useful as intermediates in the production of hydroxyalkyl-aminobutyric acid mixtures for lubricating the cold working of aluminum and as corrosion inhibitors for corrodible iron-containing metals.

Abstract: A low toxicity, corrosion and scale inhibiting composition for use in recirculating aqueous systems, e.g. in heat exchangers, comprises from about 3-1,000 parts by weight of molybdate, from about 0.5-1,000 parts by weight of an organic cationic or non-ionic surfactant, from about 0.3-1,000 parts by weight of a water soluble polyphosphate and from about 0.05-500 parts by weight of an azole, for example tolyltriazole. The composition is water soluble or water dispersible, and is effective in very small amounts (3-3,500 ppm) for corrosion control of metals such as carbon steel, copper and aluminum exposed to circulating water.

Abstract: Hydraulic fluid compositions having improved non-corrosive properties to metals are formed from (A) a hydraulic fluid containing a borate ester and (B) an oxyalkylated alicyclic amine.

Abstract: Polyglycolamines such as aminated polypropylene or polybutylene glycols and amine-initiated polypropylene and polybutylene glycols such as oxypropylated or oxybutylated lower alkanolamines inhibit the corrosion of ferrous metals by a nonoxidizing acid such as hydrochloric acid. Polyglycolamines of this class having an average molecular weight in the appropriate range of 300-5000 are effective inhibitors in 5-15 percent hydrochloric acid at moderately elevated temperatures.

Abstract: A method of reducing the amount of sulfur trioxide condensation on, and therefore the amount of sulfuric acid corrosion of, metal parts at the cold-end of a combustion system and in contact with combustion gases derived from the combustion of sulfur containing fuel, said method comprising adding to the combustion gases an effective amount for the purpose of an aliphatic, water-soluble alkanolamine additive.

Abstract: Acylated hydroxyalkylaminoalkylamides, the N-alkylated derivatives thereof, and the preparation thereof and uses thereof as corrosion inhibitors.

Abstract: Lubricating oils for internal combustion engine containing a minor amount of a combination of(A) an oil soluble basic organic nitrogen compound having a total base number of at least 300 and a pH of at least 9.5, and(B) an alkyl or alkenyl succinic acid containing 10-50 carbon atoms have improved corrosion properties.

Abstract: Hydroxyalkylaminoalkylamides, the N-alkylated derivatives thereof, and quaternaries thereof are useful as corrosion inhibitors for metals in an aqueous brine environment.

Abstract: The heavy reaction product obtained upon separation, as by distillation, of light reaction products of branched aliphatic dinitriles is useful as rust inhibitor in lubricating oils and greases.

Abstract: Oxazoline reaction products of hydrocarbon substituted dicarboxylic acid, ester, or anhydride, for example octadecenylsuccinic anhydride, with 2,2-disubstituted-2-amino-1-alkanols, such as tris-hydroxymethylaminomethane (THAM), and their derivatives are useful additives in oleaginous compositions, such as sludge dispersants for lubricating oil, or anti-rust agents for gasoline.