摘要:
A method for inhibiting corrosion of nonferrous metals in contact with circulating water comprising the steps of adding to circulating water in contact with non-ferrrous metals from 0.05 to 10 gm/m.sup.3 of at least one 3-amino-5-alkyl-1,2,4-triazole wherein said alkyl has from 2 to 8 carbon atoms and adjusting said water to a pH of from 6 to 10; as well as corrosion inhibiting compositions containing said 3-amino-5-alkyl-1,2,4-triazole.
摘要翻译:一种抑制与循环水接触的有色金属的腐蚀的方法,包括以下步骤:将与非铁金属接触的循环水添加至0.05至10gm / m 3的至少一种3-氨基-5-烷基-1,2 ,4-三唑,其中所述烷基具有2至8个碳原子,并将所述水调节至6至10的pH; 以及含有所述3-氨基-5-烷基-1,2,4-三唑的腐蚀抑制组合物。
摘要:
Aqueous media having a dissolved content of a small amount, (less than 100 p.p.m.) of a mixture of aminoalkanols of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent H and C.sub.1-18 unbranched alkyl substituents (the sum of the carbon atoms in R.sub.1 and R.sub.2 being 9 to 18), R.sub.3 and R.sub.4 each represent H,C.sub.1-4 alkyl and C.sub.2-4 hydroxyalkyl substituents, x represents 2 to 6, and y represents 0 to 1, the ##STR2## units in the aminoalkanols being of at least two different chain lengths in the range of 11 to 20 carbon atoms, possess decreased tendency to corrode iron-containing metals including steel. The mixtures are also useful in salt form. The efficiency of the mixture is improved by various additives which act synergistically therewith.
摘要:
A method for inhibiting corrosion of non-noble metals in contact with circulating water comprising the steps of adding to circulating water in contact with non-noble metals from 0.5 to 50 gm/m.sup.3 of at least one cyclohexanehexacarboxylic acid and adjusting said water to a pH of from 6 to 9; as well as corrosion inhibitory compositions containing cyclohexanehexacarboxylic acid.
摘要翻译:一种抑制与循环水接触的非贵金属的腐蚀的方法,包括以下步骤:向与非贵金属接触的循环水中添加0.5至50gm / m 3的至少一种环己烷六羧酸并将所述水调节至pH 从6到9; 以及含有环己烷六羧酸的腐蚀抑制组合物。
摘要:
Dicarboxylic acid mono-(2-hydroxydodecyl)-esters corresponding to the following general formula ##STR1## and salts thereof corresponding to the following general formula ##STR2## wherein A represents the radicals ##STR3## and M represents an alkali metal or ammonium, the use of these compounds as corrosion inhibitors in aqueous systems either by themselves or in combination with one or more complexing agents in concentrations of from 1 to 100 ppm, optionally in the presence of other scale inhibitors, dispersants, non-ferrous metal inhibitors, and/or microbicides.
摘要:
Process for controlling the breaking of an oil-in-water emulsion using an organic emulsion breaker comprising the steps of:A. adding the organic emulsion breaker to the emulsion by slow intermittent or continuous addition to produce a broken water phase;B. continuously passing a beam of light through the broken water phase;C. continuing the slow addition of the organic emulsion breaker to the broken water phase;D. continuously or intermittently measuring both the unadsorbed light passing through the broken water phase and the light scattered forward by oil droplets in the broken water phase;E. determining from the measurements in step D, the turbidity of the broken water phase; andF. discontinuing the addition of organic breaker when the turbidity reaches a first minimum value following a maximum value.
摘要:
Described are water-in-oil emulsions containing an emulsion polymerizate which is soluble in or swells in water and an oil phase, consisting at least partly of monoether compounds, that is not miscible with water in all proportions. Also described are a method of preparing such emulsions and their use as agents for precipitation, sedimentation, and/or thickening.
摘要:
A process for the prevention of the growth of microorganisms, especially in industrial water, comprises contacting these microorganisms with an effective antimicrobial amount of a reaction product of .epsilon.-caprolactam and an N-alkylalkylene diamine with the reaction being carried out in the liquid phase for 3 to 20 hours at a temperature about 180.degree.C. The process further comprises incorporating into said industrial water an effective amount of a sequestering agent comprising a water-soluble phosphonic acid which forms a complex with a divalent metal, a water-soluble salt of the acid and the mixtures thereof, with the weight ratio of sequestering agent to reaction product being 1:10 to 10:1.
摘要:
A process for demulsifying oil/water emulsions using an organic demulsifier which is added in the optimum amount by means of a controlling device for the metered addition, wherein the demulsification reaction is carried out at a temperature of from 60.degree. C. to 90.degree. C. with mixing.