Abstract: A process is disclosed for inhibiting corrosion in tin-plated steel aerosol cans which contain aqueous aerosol formulations and a propellant. Compositions such as the isopropylamine, cyclohexylamine, 2-ethylhexylamine and tertiary C.sub.12-14 alkyl primary amine salts of N-acyl sarcosine; morpholine salts of oleic acid, acetic acid, benzoic acid, and N-acyl sarcosine; cyclohexylamine, 2-ethylhexylamine, tertiary C.sub.12-14 alkyl primary amine and tertiary C.sub.18-22 alkyl primary amine salts of benzoic acid are disclosed.

Abstract: A process is disclosed for inhibiting corrosion in tin-plated steel aerosol cans which contain aqueous aerosol formulations and a propellant. Compositions such as the isopropylamine, cyclohexylamine, 2-ethylhexylamine and tertiary C.sub.12-14 alkyl primary amine salts of N-acyl sarcosine; morpholine salts of oleic acid, acetic acid, benzoic acid, and N-acyl sarcosine; cyclohexylamine, 2-ethylhexylamine, tertiary C.sub.12-14 alkyl primary amine and tertiary C.sub.18-22 alkyl primary amine salts of benzoic acid are disclosed.

Abstract: A product for inhibiting corrosion of corrodible items within closed containers which comprises a powdered solid composition capable of producing and releasing a vapor phase corrosion inhibiting compound. The powdered composition is enclosed within a sealed envelope which is formed of a sheet material impermeable to the powdered composition, but which is porous to the released vapor phase corrosion inhibiting compound released from the powdered composition. The vapor phase corrosion inhibiting compound produced and released by the powdered composition migrates through the sheet material and permeates the environment of a closed container of corrodible items.

Abstract: A method is provided for a high yield template synthesis of macrocyclic catecholamide ligands.

Abstract: A method of inhibiting the corrosion of the metal surfaces of beer pasteurizing units in contact with halogenated water vapor which comprise treating these halogenated waters with at least 1/4 ppm sulfamic acid for each ppm of halogen present in these waters.

Abstract: A method of combatting cellulosic fibre web degradation which method comprises permeating a stack of cellulosic fibre webs with an amine vapor, characterized in that said method comprises disposing an amine-immobilizing agent to immobilize amine vapor which has passed through at least part of said stack. Thus for example a book deteriorating with age can be treated by putting a charcoal containing sachet inside the front and back covers and by interleaving the rest of the book, every 20 to 50 pages or so, with sachets containing cyclohexylamine carbonate.

Abstract: Dryer-added fabric conditioning articles and methods utilizing fabric softener agent, polymeric soil release agent, and protecting agent to protect dryer surfaces.

Abstract: Gas liquefaction apparatus contaminated with mercury is decontaminated by circulating through the apparatus a solvent containing sulfur or a gas containing a sulfur reactant such as sulfur, hydrogen sulfide or alkyl thiol.

Abstract: A sterilization container is provided with relatively large top and bottom apertures to allow hot steam to rapidly pervade the interior of the container through the top while flushing cool air out the bottom. The apertures are provided with pressure actuated valves with large cross sections to minimize impedance to gas flow when the valves are open. The pressure-sensitive elements of the valves are set such that the valves close to seal the apertures when the external pressure is at atmospheric, and rapidly open fully when the pressure begins to rise in the autoclave as steam is admitted at the start of a sterilization cycle. When the external pressure is returned to atmospheric at the end of the cycle, the pressure-actuated valves close to provide a sealed container for removal from the autoclave.

Abstract: A product having corrosion inhibiting properties consisting essentially of the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of cyclohexylamine and a dicyclohexylamine; a composition having corrosion inhibiting properties consisting essentially of a carrier liquid and disposed therein the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine; a combination of a solid body carrying thereon a product having corrosion inhibiting properties consisting essentially of the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine; and a process for inhibiting corrosion of metal surface by contacting the same with the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine.

Abstract: A method for inhibiting corrosion of metal surfaces which comprises exposing the metal surfaces to an aminosilicon compound which is capable of hydrolyzing and releasing a volatile amine in the presence of atmospheric moisture.

Abstract: A liquid borate is added to sulfur trioxide-containing combustion gases at a temperature of from about 250.degree. to about 1000.degree. F. in a boiler or other furnace system. The borate neutralizes sulfuric acid in the gases and inhibits sulfuric acid corrosion and deposition on metal surfaces of the system that contact the gases. An organic deposit modifying agent such as sorbitol and an additional acid neutralizing agent such as an alkali metal hydroxide, aluminate, or silicate may also be added to the combustion gases.

Abstract: A method of minimizing corrosion deterioration and hydrogen absorption embrittlement of tantalum encountered in performing acid digestion of organic waste matter put in an acid digestion kettle of tantalum containing high temperature high concentration sulfuric acid includes the addition of nitric acid, nitrous acid, nitrates, nitrites and/or nitrogen oxides to the sulfuric acid bath.

Abstract: There is disclosed a method for the inhibiting of corrosion of a variety of metals by placing the metal in the presence of a plastic sheet carrier having incorporated therein effective amounts of corrosion inhibitors which include; (a) certain hydroxyalkyl fatty amines, and (b) certain fatty imidazolinium quaternary compounds. The aforementioned compounds provide remarkable corrosion protection for ferrous metals. There can be also included in the plastic certain benzotriazoles or tolyltriazoles when it is desired to extend the protection to copper and copper base alloys, and to aluminum and aluminum base alloys. When protection is also desired for magnesium and magnesium alloys with other metals such as aluminum, there can also be included in the plastic sheet carrier an organic phosphate adduct with diethyl amine. In the preferred embodiment, the metal objects to be protected are sealed in an envelope formed of the plastic sheet material.

Abstract: A process for removing dissolved oxygen from an aqueous medium, using hydrazine to react with the oxygen, where the aqueous medium is contacted with a catalyst bed of palladium or platinum metal dispersed on a solid carrier, at ambient temperatures. The catalyst bed effects reaction of the hydrazine with the dissolved oxygen to provide residual oxygen contents of below 10 ppb. Preferably, the hydrazine is intimately mixed with the aqueous medium prior to contact with the catalyst bed. The process is especially useful in removing dissolved oxygen from recirculating aqueous medium of a steam generation system, where the hydrazine-containing aqueous medium is contact with the catalyst bed after passage through the condenser pump but prior to the feedwater heaters.

Abstract: An improved process for removing oxygen from an aqueous medium used in a steam generating system, the aqueous medium having hydrazine added thereto, wherein hydrazine-containing aqueous medium condensate formed in a condenser is exposed to ultraviolet light in the condenser hotwell, prior to being recycled to the steam generator. The exposure to ultraviolet light is for a period of time sufficient to effect removal of the dissolved oxygen by the hydrazine without the need to add chemical additives or catalysts to the system.

Abstract: A corrosion-inhibiting composition of matter comprising (1) the reaction mass resulting from the reaction of an .alpha.,.beta.-unsaturated hydrocarbyl nitrile and a metal hydrocarbyl sulfonate, (2) an alcohol, (3) a hydrocarbon diluent, and optionally (4) an epoxy resin. The composition is particularly useful in the treatment of downhole metal surfaces in oil and gas wells for inhibiting the corrosion of the metal.

Abstract: A process for preventing the oxidation of a copper film formed on a ceramic body, which comprises the steps of forming a copper film on a ceramic body by a dry-plating process, treating the resultant copper film with a deactivating agent comprising at least one volatile hydrocarbon halide monomer by feeding the same into a vacuum chamber of a dry-plating apparatus.

Abstract: An antifoaming inhibitor of hydrogen sulphide corrosion which is a compound of the general formula: ##STR1## where R is a divalent normal or branched alkyl containing from 1 to 6 carbon atoms,n=1 or 2;when n=1R' and R" are hydrogen or branched alkyl containing from 1 to 20 carbon atoms, normal or branched alkenyl containing from 3 to 14 carbon atoms, oxyalkyl containing from 1 to 20 carbon atoms, cycloalkyl containing from 5 to 6 carbon atoms,R' and R" are --(CH.sub.2).sub.m --,where m=2-10, --(CH.sub.2).sub.2 --NH--(CH.sub.2).sub.2 --; --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 --;when n=2R' is hydrogen, normal or branched alkyl containing from 1 to 20 carbon atoms, normal or branched alkenyl containing from 3 to 14 carbon atoms,R' is --(CH.sub.2).sub.k, where k=2-10, --(CH.sub.2).sub.2 --NH--(CH.sub.2).sub.2 --.The proposed inhibitor is effective in acid, weak acid, and alkaline media in a wide range of hydrogen sulphide content.

Abstract: A method for preventing the corrosion and hydrogen embrittlement of equipment made of tantalum handling therein hot concentrated sulphuric acid at 200.degree. C. or higher, characterized in that at least one oxidizer selected from the group consisting of nitric acid, nitrogen oxides, ferric ion, cupric ion, stannic ion or plumbic ion is incorporated in the sulphuric acid.

Abstract: A mixture of an alkyl amine, e.g., tri-n-propylamine and an SO.sub.3 -containing acid, preferably, sulfamic acid is injected into the flue gas stream of a coal-fired utility boiler to reduce the electrical resistivity of the fly-ash particles and to increase their mean particle size, thereby improving their recovery by electrostatic precipitation or by mechanical separation, with consequent reduction in stack emissions.

Abstract: A method of storing a solid chlorinating agent with improved storage performance involving placing the solid chlorinating agent and a storage stabilizer such as calcium oxide, trisodium phosphate, magnesium oxide, ferrous oxide, melamine, ammeline or ammelide in a closed container in a manner that the stabilizer contacts the noxious gases in the same container but not with the solid chlorinating agent in the same container. An article for storing the same is composed of a closed container in which the solid chlorinating agent is placed together with the storage stabilizer in such a manner that the gases are brought into contact with the storage stabilizer.

Abstract: A method for inhibiting corrosion of metal by contacting the metal with a volatile alkyl ester of an amino acid. The invention also provides compositions containing these alkyl esters of amino acids as an active anti-corrosion inhibitor. These compositions may be fluid or semi-fluid compositions exemplified by oil-base compositions. The compositions may also be porous materials such as zeolite, silica gel, paper board, kraft paper, cloth, etc.

Abstract: A composition is provided for neutralizing acid corrosive agents in boiler flue gases and like vapors. In large industrial boilers and like systems, flue gases carrying sulfur trioxide contact metal surfaces of heat recovery equipment. Under some circumstances, the sulfur trioxide combines with moisture in the boiler flue gases to produce sulfuric acid. This acid can corrode the surfaces of this equipment. The composition offered here comprises a particulate carrier having a relatively large surface area, and a particulate, active neutralizing agent having a relatively small surface area surface-coated on the carrier. Here, the particulate carrier is bentonite clay and the active neutralizing agent is sodium aluminate.

Abstract: Plastic articles having volatile corrosion inhibiting properties are described. The plastic articles comprise polyolefin polymer, an inorganic nitrite salt, a trisubstituted phenol and fumed silica.

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: Corrosion resistant ferromagnetic metal powders in which a volatile corrosion inhibitor is adsorbed on at least a part of the surface of ferromagnetic metal powders having an average particle size of 1000 A or less are disclosed. A method of preparing the corrosion resistant ferromagnetic metal powders is also disclosed.

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: 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 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: Continuous ozone injection into water circulating between a cooling tower and heat exchanger with heavy scale deposits inhibits formation of further deposits, promotes flaking of existing deposits, inhibits chemical corrosion and controls algae and bacteria.

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: 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 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 aqueous solution of sodium metasilicate and an alkanolamine, particularly N-aminoethyl ethanolamine.

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 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 aqueous solution of sodium aluminate and an alkanolamine, particularly N-aminoethyl ethanolamine.

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 alkanolamine additive particularly N-aminoethyl ethanolamine.

Abstract: A collapsible terrarium assembly which is inflatable to assume a desired configuration for protectively housing a plant or other organic material in a controlled environment adapted to promote plant growth or to stimulate organic activity. The structure is constituted by a disc-like base and a replaceable dome attachable thereto by means of a coupling ring. The dome is formed by a flexible plastic envelope whose rim is provided with an annular skirt that is interposed between the coupling ring and the base to define a hermetically-sealed enclosure. The envelope is provided with a two-way valve, which in one position makes it possible to exhaust the air from the enclosure, and in another position to inflate the dome with an inert gas to create a controlled environment.

Abstract: Use of a high molecular weight polymer and a scale inhibitor to control deposit build-up in gas scrubbers.