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: A method of restoring and/or protecting a cutting surface so that it has an increased effective life comprises applying to the cutting surface a chlorhexidine compound dispersed or dissolved in a carrier therefor. Novel compositions for use for this purpose comprise solutions or suspensions of chlorhexidine compounds in suitable carriers, preferably together with cationic surfactants.

Abstract: A composition for inhibiting the corrosion of ferrous metal pipelines used to transport petroleum hydrocarbons comprising a major portion of a mixture of C.sub.36 dicarboxylic dimer acid and a C.sub.54 trimer acid, which mixture has an acid number of at least 110 and from 0.

Abstract: This invention relates to hydrocarbyl lactam-carboxylic acids prepared by a reaction of a hydrocarbyl succinic anhydride with an imine and their use as corrosion inhibitors in crankcase lubricant compositions.

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: This invention relates to quaternaries of halogen derivatives of alkoxynoxymethyl 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 alkylidene 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 alkylidene, alkinylene, alkenylene, arylene, 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: This invention relates to substituted pyridines prepared by reacting aldehydes, amines, lower carboxylic acids such as acetic acid in the presence of oxygen. The N-substituted pyridinium salts formed can be converted to pyridines by thermal dealkylation.

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: 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: 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: A copper based corrosion inhibitor composition and a method for employing the same to prevent corrosion of metal in contact with acid-gases, i.e., hydrogen sulfide, carbonyl sulfide and carbon dioxide. Copper, or a copper compound and sulfur or a sulfur compound, is maintained in solution in contact with the metal under conditions of operation, particularly the thermal regeneration, which provide copper ions and sulfur atoms, particularly polysulfide moieties at the surface of the metal, e.g. copper sulfide is dissolved in an aqueous alkanolamine, monoethanolamine, solution used as an absorbent for acid-gas removal from sour-gas. The copper and sulfur moieties may be formed in situ or prepared and added in solution. The inhibitor has particular utility in protecting metal surfaces which are subject to corrosion as an incidence of the acid-gas content of either natural or synthetic gases.

Abstract: An extruding and molding material suitable for the production of packaging materials for the protection of metal articles against corrosion is obtained by admixing a thermoplastic resin with an organic monoamine and an acid. The organic monoamine and the acid react to form a volatile corrosion inhibitor at the high temperature encountered in the extruding and molding process.

Abstract: This invention relates to alkynoxymethyl amines, to methods of preparing them, and uses thereof, particularly as corrosion inhibitors. These compounds are prepared by reacting an amine, such as RNH.sub.2, with an aldehyde, such as formaldehyde, and an alkynol, such as propargyl alcohol, to yield compounds of the formulaRN(CH.sub.2 OR').sub.2where R is a substituted group, preferably alkyl, cycloalkyl, aryl, etc., and R' is an acetylenic alcohol moiety.

Abstract: A metal corrosion inhibitor and method of its application are provided. The inhibitor is a composition prepared by adding an alkali metal nitrite, ammonium benzoate, an alkylalkanolamine and a nitrogenous base such as urea to water. The inhibitor is applied as a mist or spray to the exposed edges of coiled and cut length sheets of steel to protect the steel during storage and is fogged into shipping containers or vehicles to protect the steel during shipping.

Abstract: Disclosed is a corrosion inhibitor for metal surfaces. The surface is contacted with an alkaline aqueous solution containing a reaction product of an aliphatic carboxylic acid, a polyhydroxy carboxylic acid and an alkanol amine.

Abstract: This invention relates to the preparation of octahydrophenanthridines by the deammoniation of tetrahydropyrimidines; and to the products thereof.

Abstract: 1,2-Fused five-membered or six-membered 1,3-dinitrogen-heterocyclic compounds, useful as anti-corrosion agents, having the formula ##STR1## wherein A is an optionally substituted, optionally polynuclear orth- or peri-arylene radical andB is an optionally substituted alkylene chain ##STR2## WHEREIN R.sup.1 and R.sup.2 individually represent hydrogen and/or optionally substituted aliphatic, cycloaliphatic, araliphatic or aromatic radicals andn represents a number from 3 to 6,OrB is an optionally substituted 1,8-naphthylene, 2,2'-diphenylene or 4,5-phenanthrylene radical,Are prepared by splitting a five-membered or six-membered 1,3-dinitrogen-heterocyclic compound, which contains a 2-(.omega.-amino group) side chain, having the formula ##STR3## wherein A and B have the meanings indicated above andR.sup.3 and R.sup.4 are hydrogen, lower alkyl, cycloalkyl or aralkyl but at least one of the two radicals R.sup.3 and R.sup.4 must represent hydrogen.

Abstract: Quaternary nitrogen-heterocyclic phosphonates wherein the phosphonate group is ortho- or para- to the nitrogen heterocyclic group, where the compounds are characterized as follows: ##STR1## WHEREIN THE DOTTED LINE REPRESENTS A CYCLIC STRUCTURE WHICH CYCLIC STRUCTURE MAY BE THE SOLE CYCLIC STRUCTURE, OR MAY BE ATTACHED TO OTHER CYCLIC GROUPS, WHERE R is a hydrocarbon or a substituted hydrocarbon group such as alkyl, aryl, alkaryl, aralkyl, etc., and X is an anion such as halogen, a sulfite, a sulfate, s sulfonate-containing group, etc.These nitrogen-heterocyclic phosphonates are prepared by reacting an aromatic nitrogen-heterocyclic compound, wherein the nitrogen atom is in the form of a quaternary alkoxy derivative (N-OR hereinafter defined) with a phosphite salt, preferably in the form of an ester of the phosphite, as exemplified by the following equation: ##STR2## Quaternaries of these compounds are prepared by further reaction with a quaternizing agent.

Abstract: A white rust inhibited composition is comprised of a zinc containing substrate. A white rust inhibiting composition contacts the substrate and is comprised of a vapor corrosion inhibitor and a pH adjusting compound to adjust and maintain the pH of the white rust inhibiting composition between 8 and 12.5.

Abstract: The corrosion of iron and steel by an aqueous sour gas conditioning solution used to remove CO.sub.2 and H.sub.2 S from a gas stream is effectively inhibited by a combination of a quaternary pyridinium salt and a lower alkylenepolyamine or corresponding polyalkylenepolyamine.

Abstract: Valuable amino alkane diphosphonic acids in which one or both hydrogen atoms of the amino group are substituted by hydroxy alkane groups, and their alkali metal salts and a process of using them are described. Said compounds are highly water-soluble, are stable against hydrolysis even at temperatures exceeding 100.degree. C., and have a high sequestering power so that they can be used advantageously, for instance, in processing aqueous media of considerable hardness, and in suppressing scale and corrosion in aqueous media used for heat treatment of containers.

Abstract: Low toxicity, low pollution potential compositions and methods for inhibiting corrosion of ferrous and non-ferrous metallic parts in aqueous systems. The compositions have no chromate, no polyphosphate and no borate and consist essentially of alkali metal nitrite, alkali metal carbonate or bicarbonate and an azole. Preferably the compositions also include an alkali metal silicate and small amounts of an alkali metal hydroxide. In the corrosion inhibiting method, the aforesaid compositions are added to the system water in amounts sufficient to provide from about 100 to 10,000 parts per million ("ppm") of alkali metal nitrite, the primary inhibitor.

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: Corrosion inhibiting compositions are described which contain a hydrazine compound, an organometallic complex and preferably a quinone compound. The organometallic complex is the reaction product of a cobaltous or manganous hydroxide and one or more aromatic ligands containing at least two hydroxy functional groups, or at least one amino and one hydroxy group, in the ortho position with respect to one another. The quinone compound is preferably added to these compositions in order to render the compositions compatible with chelating phosphonate scale control agents. The use of these compositions as oxygen scavengers in corrosive environments is also described.

Abstract: Dihydro-nitrogen heterocyclic phosphoramidates of the general formula ##STR1## where N - C represents a dihydro-nitrogen ring, R is a substituted group, preferably hydrocarbon, X is O or S, and R.sub.1 is an alcohol or phenolic moiety, preferably hydrocarbon; the preparation and uses thereof particularly as corrosion inhibitors, microbiocides, etc.

Abstract: A metal protecting composition is obtained by blending zinc a partially-hydrolyzed organic silicate and a fatty acid amidoamine.

Abstract: Novel functional ionene polymer compositions have been prepared which have been found to be useful in a wide variety of applications, including, among others, as wet and dry strength additives, corrosion inhibitors, and electroconductive coatings, and which comprise recurring units of the formula: ##STR1##

Abstract: A method of inhibiting corrosion of metals comprising applying to a metal surface in an effective concentration a saturated aliphatic triamine of 9 carbon atoms having at each terminal position a primary amino group and being branched in the 4-position of the main chain Such specific triamines include 1,3,6-triaminomethylhexane and 1,2,3-triaminoethylpropane. Addition products and condensation products derived from these organic triamines are also effective. The present anti-corrosive agents show a remarkable rust preventive effect to metals even when used in a small amount and are non-toxic.

Abstract: Alkylbenzyl pyridinium compounds, for example of the general formula ##STR1## where R is a hydrocarbon group, preferably alkyl, occurring n times in the ring such as 1-3, but preferably 1 or 2; and R' is a hydrocarbon group, preferably alkyl, occurring m times, such as 1-3, but preferably 1, and X.sup.- is an anion, preferably halogen. These compositions are employed as corrosion inhibitors, preferably in acid systems. These are preferably employed as corrosion inhibitors with surfactants, and most preferably with surfactants and alcohols.

Abstract: Corrosion inhibiting compositions containing hydroxyamine phosphate ester or water-soluble derivative thereof, together with water-soluble zinc salt and 1,2,3-triazole or water-soluble derivative thereof; and methods for inhibiting corrosion in aqueous systems therewith.

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: A corrosion-inhibiting poly(arylene sulfide) coating composition is described which comprises a mixture of a normally solid poly(arylene sulfide) resin, a corrosion-inhibiting agent selected from alkali metal nitrites, benzoates, phthalates; ammonium chromates, benzoates, phthalates; mixtures of alkali metal chromates and alkali metal borates; morpholine; or combinations thereof, dispersed in a liquid suspending agent. An illustrative coating composition contains 25 weight percent poly(phenylene sulfide) resin, 8 weight percent titanium dioxide, 33 weight percent water, 33 weight percent propylene glycol and 1 weight percent sodium nitrite. The coating compositions are useful in inhibiting the occurrence of corrosion during coating and curing of the coating compositions to iron and iron-containing alloys in the formation of cured poly(arylene sulfide) resin coated iron or iron-containing alloy laminates.

Abstract: Thickened fracturing and acidizing fluids suitable for well treatment are prepared by adding certain amine salts to aqueous acid or salt solutions. The amines from which the amine salts are prepared are alkoxylated alkyl- or alkenylamines in which an alkyl or alkenyl group contains at least about 14 and preferably about 14-30 carbon atoms. Most often the alkyl or alkenyl group is oleyl, stearyl, or a mixture of groups derived from such fats as tallow or soybean oil. The especially preferred amines are the "Ethomeens" which are ethoxylated fatty amines.

Abstract: Quaternary ammonium salts of polyepihalohydrin and tertiary amines and their use as corrosion inhibitors, particularly in acid systems.

Abstract: An antimicrobial composition for secondary and tertiary oil recovery comprising a flooding composition consisting of displacement and driving fluids having incorporated therein an antimicrobially effective amount of a di-bicyclo[3.1.1] or [2.2.1] heptyl or di-bicyclo[3.1.1] and [2.2.1] heptenyl polyamines or salts thereof.

Abstract: 1,2-FUSED FIVE-MEMBERED OR SIX-MEMBERED 1,3-DINITROGEN-HETEROCYCLIC COMPOUNDS, USFUL AS ANTI-CORROSION AGENTS, HAVING THE FORMULA ##STR1## wherein A is an optionally substituted, optionally polynuclear orth- or peri-arylene radical andB is an optionally substituted alkylene chain ##STR2## WHEREIN R.sup.1 and R.sup.2 individually represent hydrogen and/or optionally substituted aliphatic, cycloaliphatic, araliphatic or aromatic radicals andn represents a number from 3 to 6,OrB is an optionally substituted 1,8-naphthylene, 2,2'-diphenylene or 4,5-phenanthrylene radical,Are prepared by splitting a five-membered or six-membered 1,3- dinitrogen-heterocyclic compound, which contains a 2-(.omega.-amino group) side chain, having the formula ##STR3## wherein A and B have the meanings indicated above andR.sup.3 and R.sup.4 are hydrogen, lower alkyl, cycloalkyl or aralkyl but at least one of the two radicals R.sup.3 and R.sup.4 must represent hydrogen.

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: Metal corrosion inhibiting compositions of outstanding utility are prepared by utilizing a selective and critical multicomponent formulation comprising in combination functionally operative proportions ofA specific quaternized cyclic nitrogen baseA specific acetylenic alcoholA surface active agentA formic acid derivative.The above formulation can be substantially improved by adding certain functionally operative additional surfactants. The choice of these surfactants is unobvious and it has been found that only a few critically selective species are operable for the purposes of the invention.

Abstract: A method of inhibiting corrosion of metals comprising applying to a metal surface in an effective concentration a saturated aliphatic triamine of 9 carbon atoms having at each terminal position a primary amino group and being branched in the 4-position of the main chain. Such specific triamines include 1,3,6-triaminomethylhexane and 1,2,3-triaminoethylpropane. Addition products and condensation products derived from these organic triamines are also effective. The present anti-corrosive agents show a remarkable rust preventive effect to metals even when used in a small amount and are non toxic.

Abstract: Corrosion inhibiting compositions are described which contain a hydrazine compound, an organometallic complex and a quinone compound. The organometallic complex is the reaction product of a cobaltous, manganous, or cupric inorganic salt and one or more aromatic ligands containing at least two hydroxy or two amino functional groups, or at least one amino and one hydroxy group, in the ortho position with respect to one another. The quinone compound is one which renders the composition compatible with chelating phosphonate scale control agents. The use of these compositions as oxygen scavengers in corrosive environments is also described.

Abstract: This invention relates to alkynoxymethyl amines, to methods of preparing them, and uses thereof, particularly as corrosion inhibitors. These compounds are prepared by reacting an amine, such as RNH.sub.2, with an aldehyde, such as formaldehyde, and an alkynol, such as propargyl alcohol, to yield compounds of the formulaRN(CH.sub.2 OR').sub.2where R is a substituted group, preferably alkyl, cycloalkyl, aryl, etc., and R' is an acetylenic alcohol moiety.

Abstract: This invention relates to halogen derivatives of alkynoxymethylamines and to uses thereof. The present invention may be ideally illustrated by the following equation:RN(CH.sub.2 OR'C.tbd.CH).sub.2 + 2NaOX .fwdarw. RN(CH.sub.2 OR'C.tbd.CX).sub.2 + 2NaOHwhere R is a substituted group, preferably hydrocarbon, such as alkyl, cycloalkyl, aryl, etc., R' is hydrocarbon, preferably alkylene, and where X is halogen.

Abstract: Efficiency of chemical surface finishing baths for metal articles, particularly electrolytic baths for anodizing metals such as aluminum, magnesium or titanium is improved by incorporating into the bath an effective amount, typically from 0.1 to 50 grams per liter of the reaction product of a metal halide, such as boron trifluoride, and a trifluoro-alkaryl amine, suitably .alpha.,.alpha.,.alpha.,-trifluoro-m-toluidine.

Abstract: This invention relates to a process of preparing alkylpyridines and N-substituted alkyldihydropyridines from hexahydrotriazines. These products may be further reacted to form other compositions. The products of the reaction are useful as corrosion inhibitors.

Abstract: Working fluid compositions for absorption refrigeration systems comprising alcohol, lithium bromide, zinc bromide and a synergistic mixture of arsenic trioxide and the sodium salt of ethylenediaminetetraacetic acid which are markedly inhibited in corrosion of ferrous metals, and a method for inhibiting the corrosion of ferrous metals by alcohol-lithium bromide-zinc bromide mixture by adding a synergistic combination of arsenic trioxide and ethylenediaminetetraacetic acid.

Abstract: A method of inhibiting corrosion and scale formation in an aqueous system is disclosed which comprises the step of treating the said system with 0.1 to 500 parts per million by weight of the total aqueous content of the said system, of a composition which comprises amine adducts of maleic anhydride polymers and which may additionally include zinc.

Abstract: The disclosed organic ammonium phosphate salt concentrates can be diluted with water in the weight ratio of from 1:5 to 1:250 (concentrate:water) and used in bath, spray, or steam phosphatizing (sometimes called "phosphating"). These concentrates and the resulting diluted solution are reasonably pH-stable in the pH range of 3.0 to 5.5. Preferably, the concentrates contain a buffer, various surfactants, and, particularly for low temperature use (e.g. 20.degree.-55.degree. C.) an accelerator system. The concentrates are well suited to automatic dispensing of a phosphatizing spray or make-up solution (for a bath); they are efficient at low temperatures; and they have good storage stability.

Abstract: Substituted tetrahydropyrimidines, both mono- and disubstituted, as exemplified by 2(2-N,N-dioctylamino-2-propyl)-3-tetradecyl-1,4,5,6-tetrahydropyrimidine, are useful as additives in petroleum distillates such as gasoline.

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.