Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.

Abstract: Compositions comprising a mixture of gelatin and a compound of the formula: ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each a group selected from the class consisting of --H, --Cl, --CHCl.sub.2, --CH.sub.2 Cl, --CCl.sub.3, --SH, --SCH.sub.3, --NH.sub.2, --NHC.tbd.N, --CH.sub.2 C.tbd.N, ##STR2## --CH.sub.2 OH, --NO.sub.2 and monovalent hydrocarbon radicals having from 1 to about 18 carbon atoms, provide effective corrosion inhibition for aqueous carboxylic acid solutions in the cleaning of metal industrial equipment.

Abstract: The surfaces of articles made of aluminum, such as annodized aluminum and bare aluminum, are treated with N-alkyl-fluoroaliphaticsulfonamidophosphonic acids or salts thereof to impart corrosion resistance to said surfaces.

Abstract: Lubricant compositions containing, in an amount sufficient to inhibit metal corrosion, the reaction product of oleic acid and 2,5-dimercapto-1,3,4-thiadiazole.

Abstract: This invention relates to N-alkyl thioethers of quaternary ammonium derivatives of 1,4-thiazines; to the preparation thereof; and to the uses thereof for example as corrosion inhibitors, microbiocides, etc.

Abstract: Compositions comprising mixtures of a dithiocarbamic acid derivative and a sulfonium compound such as triphenylsulfonium chloride provide effective corrosion inhibition in acid treatment of metal in the presence of a copper complexing agent such as a thiourea.

Abstract: A lubricating oil composition comprising 0.001% to 10%, based on the total lubricating composition, of a compound of formula I: ##STR1## wherein x is an integer from 1 to 25; R, R.sup.1 and R" are the same or different and each is hydrogen, an optionally substituted straight- or branched-chain alkyl residue having from 1 to 20 carbon atoms, an alkenyl or alkynyl residue having from 2 to 12 carbon atoms, an optionally substituted cycloalkyl residue having from 3 to 12 carbon atoms, an optionally substituted aryl residue having from 6 to 10 carbon atoms, an optionally substituted aralkenyl or aralkynyl residue each having from 8 to 12 carbon atoms, an optionally substituted aralkyl residue having from 7 to 20 carbon atoms or an optionally substituted heterocyclic residue having from 3 to 10 ring members, an alkylene residue having from 2 to 12 carbon atoms, a cycloalkylene residue having from 5 to 12 carbon atoms or an arylene residue having from 6 to 10 carbon atoms; or R is the group -(S).sub.

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: When a specific condensed phosphate glass is combined with an organic phosphate ester, an improved composition is afforded for preventing scale and corrosion in industrial cooling systems. Optionally, certain azoles are combined with the phosphate glass and phosphate ester to afford corrosion protection to non-ferrous metals.

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 process and a composition for inhibiting corrosion of metal parts in water systems such as in recirculating cooling towers and the like, while additionally suppressing scale formation and inhibiting corrosion of copper and copper-containing alloys which comprises adding and dissolving in the aqueous system, a controlled combination of active constituents in effective amounts comprising as essential constituents, an alkali molybdate salt, a divalent metal cation selected from the group consisting of ZN.sup.++, Mn.sup.++ and Ni.sup.++ ; 1-hydroxyethylidene-1,1-diphosphonic acid and the aqueous soluble alkali salts thereof; and an organic agent selected from the group consisting of 2-mercaptobenzothiazole and the alkali salts thereof; 1,2,3-benzotriazole, and tolyltriazole.

Abstract: Ashless lubricant additive compositions which contain a small but effective amount of overbased aminoguanidine sulfonate, sufficient to impart acid neutralization, antitrust, anticorrosive, dispersant, and detergent properties, are formed by reacting greater than about one mole of aminoguanidine with one mole of a hydrocarbon sulfonic acid.

Abstract: This invention relates to N-alkyl sulfone containing quaternary ammonium derivatives of 1,4-thiazines; to the preparation thereof; and to the uses thereof, for example as corrosion inhibitors, microbiocides, etc.

Abstract: This invention relates to N-alkyl thioethers of quaternary ammonium derivatives of 1,4-thiazines; to the preparation thereof; and to the uses thereof for example as corrosion inhibitors, microbiocides, etc.

Abstract: A corrosion resistant coating composition is provided which is a one-quart system. The composition is an asphaltic-base material containing a petroleum sulfonate and a sufficient amount of an organic solvent to impart the desired viscosity. A source of amine groups, such as a polyamide resin, is added and the resulting composition has improved adherence to the metallic substrate.

Abstract: Compositions which form homogeneous blends with lubricating oils and the like are produced by preparing a mixture of an oil-soluble dispersant (preferably a substantially neutral or acidic carboxylic dispersant) and a dimercaptothiadiazole, preferably 2,5-dimercapto-1,3,4-thiadiazole, usually with a diluent, especially a lubricant base liquid, and heating said mixture above about 100.degree. C. The compositions often contain dimercaptothiadiazole moieties in amounts substantially greater than stoichiometric. They are useful for suppression of copper activity and "lead paint" deposition in lubricants.

Abstract: Aminosulfonylcarboxylic acids and their manufacture from diamines and chlorosulfonylcarboxylic acids.

Abstract: The corrosion of iron and steel by an aqueous sour gas conditioning solution used to remove CO.sub.2 from a gas stream is effectively inhibited by a combination of a quaternary pyridinium salt and an organic thioamide, a water-soluble sulfide or a water-soluble thiocyanate.

Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.

Abstract: An aqueous organic amine acid gas scrubbing system, particularly an aqueous N-methyldiethanolamine or diethanolamine acid gas scrubbing system having incorporated therein (1) a compound or mixture of compounds having the formula ##STR1## wherein n is an integer from 1 to 3, m is an integer from 2 to a number sufficient to yield a molecular weight of about 800, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently selected from the group consisting of --H, --C.sub.n' H.sub.2n' OH, --C.sub.n' H.sub.2n'+1, --C.sub.n' H.sub.2n' N(R.sub.3)R.sub.4 wherein n' is an integer from 1 to 2 and wherein R.sub.1 -R.sub.3 and R.sub.2 -R.sub.4 may be joined to form cyclic amines when n is 2; said compound being present in about 10 to about 2000 parts per million parts of treating solution; (2) copper or a copper ion yielding compound in from 0 to 1000 ppm; and (3) sulfur or a sulfur atom yielding compound in from 0 to 1000 ppm.

Abstract: A neutral oil soluble organosulfonic acid ammonium salt formed by reaction of C.sub.1 -C.sub.26 sulfonic acid with a nitrogen base chosen from the group consisting of mono-, di-, and tertiary amines, acid addition salts of such amines, or quaternary ammonium compounds, the nitrogen base having at least one hydrocarbyl group containing from about C.sub.1 to C.sub.36 carbon atoms, is added to an oil composition to improve the load-carrying capacity of the oil composition. The sulfonic ammonium salts are particularly effective in synthetic ester lubricants used in turbine engines. The oil compositions of this invention are also compatible with the silicone and fluorosilicone seals used in such engines.

Abstract: A new corrosion inhibitor for acid-pickled ferrous and nonferrous metals in the form of isoperthiocyanic and its .alpha.-hydroxy-substituted derivatives of the formula ##STR1## The metals are pickled in aqueous solutions of acid mixed with 0.1-1 wt.-% of said inhibitor.

Abstract: An anti-corrosive organic pigment is prepared by mixing a lignin type compound with urea, a urea derivative, melamine, a melamine derivative, ammonia or an ammonium salt, condensing the components of the mixture by heating the mixture in a molten form, and then pulverizing or dispersing the reaction mixture to form a pigment.

Abstract: Amidosulfocarboxylic acids, their preparation from primary or secondary amines and chlorosulfocarboxylic acids, and their use as anticorrosive agents.

Abstract: This invention relates to sulfur-containing Bis-Quaternaries of the idealized formula[N .sup.+ CH.sub.2 CH.sub.2 ].sub.2 Z 2X.sup.-where N is a quaternary amino group, Z is a sulfur-containing group, for example S, SO, SO.sub.2 and X is an anion; to methods of preparing such compounds; and to uses of such compounds.

Abstract: The oil-soluble azo compounds of this invention are useful as dispersants, corrosion inhibitors and anti-wear agents in lubricating oil and fuel compositions. The predominant oil-soluble azo reaction product may be represented by the following formulas: ##STR1## wherein R represents an oil-solubilizing, synthetic, polymeric organic radical containing at least 20 carbon atoms,Y is independently selected from the group consisting of --NR.sub.2 R.sub.3 and --SR.sub.4,R.sub.2, r.sub.3, and R.sub.4 are independently selected from hydrogen, alkyl, cycloalkyl, aryl, alkaryl and aralkyl,X is independently selected from oxygen, sulfur and =NR.sub.5, with the proviso that when X is =NR.sub.5, Y is --NR.sub.2 R.sub.3,R.sub.

Abstract: Corrosion-inhibiting aqueous solutions and corrosion inhibiting antifreeze agents based on glycols and aqueous solutions thereof are prepared by adding two such solutions and agents already containing conventional corrosion inhibitors, heterocyclic nitrogen compounds having the formula: ##STR1## wherein: R.sup.1 and R.sup.2 are hydrogen or together with the carbon atoms to which they are attached represent an optionally substituted benzene ring;R.sup.3, r.sup.4, r.sup.5 and R.sup.6 independently of one another are selected from the group of hydrogen, lower alkyl, phenyl substituted by one or more lower alkyls;X is sulphur or an imino group (NH) optionally substituted on the nitrogen atom; andn is an integer from 1 to 13, added to an aqueous solution or antifreeze agent which contains at least one conventional corrosion inhibitor.

Abstract: Aqueous metal working liquids containing a bis-sulfonamidocarboxylic acid of the formula ##SPC1##In the form of its water soluble or water dispersible salt with an alkali or an organic base, as corrosion protection and metal-working agent wherein R.sub.1 denotes hydrogen, halogen, alkyl and/or alkoxy of 1 to 3 carbon atoms, R.sub.2 denotes an alkylene radical having a total of 1 to 5 carbon atoms, and x denotes an integer of from 2 to 6.

Abstract: A Mannich base and thiourea inhibitor composition and method of inhibiting the acid attack by aqueous hydrofluoric acid on ferrous metal surfaces, and in particular, highly reactive ferrous metal surfaces.

Abstract: A synergistic mixture of an alkynyl cycloalkanol and an N,N'-dicycloalkyl-thiourea is used as an inhibitor in protecting metals from acid attack when cleaning said metals with an acid solution.

Abstract: This invention relates to the amine bisulfites which are useful as a combination corrosion inhibitor/oxygen scavenger. This is illustrated by heterocyclic amine bisulfites such as pyridine bisulfites.

Abstract: A lubricating oil composition containing a synergistic corrosion inhibiting combination of 2,5-bis-hydrocarbyldithio-1,3,4-thiadiazole and a primary alkyl or alkenyl amine salt of 2-mercaptobenzothiazole.

Abstract: Lubricating oils containing as an ashless detergent a quaternary ammonium salt derived from an organic acid, (e.g. carboxylic acid, sulphonic acid, alkyl phenol or phosphosulphurised hydrocarbon) and a cation obtained by the reaction of a tertiary amine, olefin oxide and water.

Abstract: A non-discoloring stabilizer system for trans-polypentenamer of:A. a sulphur-containing phenol of the formula: ##SPC1##In which R.sub.1 and R.sub.3 are alkyl groups with 1 to 8 carbon atoms, aralkyl radicals with 7 to 9 carbon atoms and cycloalkyl radicals with 5 to 7 carbon atoms, R.sub.3 represents hydrogen, alkyl groups with 1 to 8 carbon atoms, cyclohexyl, cyclohexenyl or methylcyclohexenyl, R.sub.4 represents alkyl groups with 1 to 12 carbon atoms or ##SPC2##Where R.sub.1, R.sub.2 and R.sub.3 are as defined above, andB. a phenol ester of phosphorous acid of the formula: ##SPC3##In which R.sub.5 represents an alkyl or cycloalkyl group with 5 to 10 carbon atoms, R.sub.6 and R.sub.7 are the same or different and represent hydrogen, alkyl and cycloalkyl radicals each with 1 to 7 carbon atoms.

Abstract: This invention relates to corrosion inhibitors which are not only effective against metal loss corrosion but are also effective against corrosion of the cracking type such as (1) stress (continuing tensile stress) cracking, (2) hydrogen embrittlement or blistering, and (3) corrosion fatigue (alternating tensile stress).

Abstract: Compositions and methods for the protection of steel and metal well equipment used in high temperature oil and gas wells above 250.degree.F and more particularly in the range of about 300.degree.-550.degree.F for bottom hole temperatures. The basic composition is a trimer acid salt of a primary mono-amine and particularly useful is a primary amine such as a primary tallow amine having C.sub.9 -C.sub.24 carbon length. Other ingredients include a sulfonate, particularly an alkaryl sulfonate, as well as a mixture of dispersing agents or solvents specially utilizing a combination of a lower alkanol and a highly aromatic solvent as make up. Optionally there may be included a minor amount of a water-in-oil demulsifier. The reaction of the trimer acid with the mono-amine affords less opportunity for any further deleterious reaction or polymerization than as previous formulations utilizing polyamines with dimer acids and the like.

Abstract: A lubricating oil composition of improved rust inhibitory capability contains a small amount of the sulfate of an oxyalkylenated alcohol or phenol having a molecular weight of about 500-5,000.

Abstract: A corrosion inhibiting composition which comprises an aqueus medium having dissolved therein an effective amount of at least one of water-soluble 8-hydroxy-s-triazolo[b]pyridazine compounds and watersoluble salts thereof, said water-soluble 8-hydroxy-s-triazolo[b]pyridazine compound having the formula of ##SPC1##Wherein R.sub.1 is hydrogen atom or an alkyl group having 1 to 4 carbon atoms: R.sub.2 is hydrogen atom, an alkyl group having 1 to 10 carbon atoms, phenyl, hydroxyphenyl, nitrophenyl, benzyl, hydroxybenzyl or nitrobenzyl group; and a method for inhibiting corrosion of a metal which comprises contacting a metal with said composition.

Abstract: Functional fluid compositions comprising polyphenyl thioethers, mixed polyphenyl oxy-thioethers and mixtures thereof containing certain pyrimidines as anti-corrosive agents have improved metal compatibility and are particularly useful as aircraft engine lubricants and hydraulic fluids.

Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.