2-methyl-3,4-trimethylenetrinitramine as corrosion inhibitor of steel in saline environments |
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IPC classes for russian patent 2-methyl-3,4-trimethylenetrinitramine as corrosion inhibitor of steel in saline environments (RU 2168498):
    
The method of protection against corrosion microware contacts the aluminum - gold / 2166000
The invention relates to the protection of products against corrosion, in particular devices containing contacts the aluminum-gold, and can be used in the manufacture of semiconductor devices and integrated circuits
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The invention relates to the protection of oilfield equipment from hydrogen sulfide and carbon dioxide corrosion and can be used in the oil industry
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The invention relates to the oil industry and can be used for protection of oil-field equipment from corrosion in water and oil-water environments containing oxygen
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The invention relates to methods for inhibited hydrochloric acid, used in oil production, namely the production including inhibited hydrochloric acid used for treatment of bottom-hole zones of oil and water wells
 Inhibitors of microbial corrosion and hydrogen pickup steel / 2151819
The invention relates to the protection of steel parts, machines, structures and facilities used in salt-water environments (closed cooling system, technological environment chemical and other plants, storage tanks for hydrocarbon fuels), as well as in soil and sea water, from corrosion damage under the influence of environment and bacterial cells sulphate-reducing bacteria and prevent (reduce) hydrogen embrittlement of structures and machine parts, responsible in performing their functions
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The invention relates to a method for corrosion protection of steel borehole equipment and gathering systems
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The invention relates to a method for corrosion protection of steel borehole equipment and pipelines, gathering systems and wastewater
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The invention relates to the oil and gas industry, and in particular to compositions of corrosion inhibitors used to prevent corrosion of piping and equipment operated in acid and hydrogen sulfide-containing environments
 Alkyl(aryl)pyridineboronic as corrosion inhibitor of steel in saline environments / 2141948
The invention relates to novel alkyl(aryl)pyridineboronic formula I,
 < / BR>where R is C2H5C3H7C4H9C5H11C6H13C7H15or formula II,  < / BR>where R is CH3C2H5C3H7C4H9C5H11or formula III,  < / BR>where (a) R1= R4= CH3, R2= R3= CH3b) R1= R4= CH3, R2= C2H5, R3= CH3in) R1= R4= C3H7, R2= R3= CH3, g) R1= R4= C3H7, R2= C2H5, R3= CH3that are effective inhibitors of corrosion of carbon steels in environments with high oxygen content Alkyl(aryl)pyridineboronic as corrosion inhibitor of steel in saline environments / 2141948
The invention relates to novel alkyl(aryl)pyridineboronic formula I,
< / BR>where R is C2H5C3H7C4H9C5H11C6H13C7H15or formula II, < / BR>where R is CH3C2H5C3H7C4H9C5H11or formula III, < / BR>where (a) R1= R4= CH3, R2= R3= CH3b) R1= R4= CH3, R2= C2H5, R3= CH3in) R1= R4= C3H7, R2= R3= CH3, g) R1= R4= C3H7, R2= C2H5, R3= CH3that are effective inhibitors of corrosion of carbon steels in environments with high oxygen content  Means causing inherited and fixed in the offspring directed matirovanie genome of the cells of unicellular and multicellular organisms / 2094460
The invention relates to biotechnology and may find application in medicine, veterinary, agriculture and food industry
 Derivatives of glycerol and method of production thereof / 2040521
The invention relates to new derivatives of glycerol General formula
 where k=1 or 0;Lower alkyl or arylalkyl; R1acetyl, 2-alkoxybenzyl or aryl; n=0 or an integer from 1 to 3; The group G formula  < / BR>or  X-A is selected from groups of formula: (1) -NH-(CH2)  where R2, R3and R4lowest alkoxygroup;(2) -NH-(CH2)  SO2-NH-R5where R5hydrogen, alkyl, or CH p=1 or 2;(3) -N  X-R6where the X group is-CH - or a nitrogen atom; R6group-СОR7where R7alkyl or alkoxy, or a group-0-C0-NH-R8where R8alkyl;(4) -NH  < / BR>(5) -NH-(CH2)3-OR10where R10alkyl; (6) -NH-(CH2)10-NH-CO-NR11R12where R11and R12lower alkyl; (7) -NH-CH  O(9) -NH-(CH2)5-0-(CH2)5-0-(CH2)5-H (10) -NH-(CH2)3-0-CO-NH-R14where R14alkyl; (11) -NH-CH  < / BR>(12)  CH where m=0 or from 1 to 6; R9, R15and R16the same or different and represent hydrogen or alkoxygroup, provided that when k=0, group a sure formula
 Method of preparing corrosion inhibitor-bactericide for hydrogen sulfide-containing and acidic media / 2261293
Invention, in particular, relates to protection of oil-field equipment to suppress vitality of microorganisms and to inhibit corrosion in hydrogen sulfide-containing and acidic media, in oil production, transportation, and storage systems as well as in flooded formations. Task is solved by that, in a method of preparing corrosion inhibitor-bactericide, alkyl-substituted pyridines are brought into reaction alkyl bromides at elevated temperature, said alkyl-substituted pyridines being picolines or picoline fractions at molar ratio of picolines or picoline fractions to C10-C16-alkyl bromides 1.05:1. Picolines or picoline fractions are introduced into three-step reaction each time by 0.35 mole with time interval 40-50 min, while overall reaction proceeds for 2-5 h at 120-140°C. If necessary, reaction product is mixed with solvent to form 20-70% reagent solution.
 Ionic liquids ii / 2272043
Invention relates to new ionic liquids designated for using in electrochemical cells and in organic synthesis. Invention describes ionic liquids of the general formula: K+A- (I) wherein K+ represents one of cations of the group consisting of the following formulae:
 Pyridinium hexafluorophosphate preparation method / 2277086
Invention relates to technology of preparing pyridinium hexafluorophosphate, which is convenient intermediate for synthesis of lithium hexafluorophosphate used as ionic electrolyte component for lithium chemical power sources. Pyridinium hexafluorophosphate is prepared via reaction phosphorus pentachloride with fluorination agent such as ammonium hydrodifluoride followed by treatment of resulting intermediate with pyridinium salt solution.
 Method for preparing phenyl-substituted derivatives of pyridine labeled with tritium / 2296752
Invention relates to a method for preparing N-phenylpicolinium salts and phenyl-substituted picolines labeled with tritium by phenyl ring of the general formula: [CH3C5H4N+C6H* 5]BF- 4 and CH3C6H* 5C5H3N. Method involves arylation of 2-, 3- and 4-picolines with free phenyl cations obtained in beta-decay of tritium in composition of two-fold labeled benzene in the presence of potassium tetrafluoroborate in the closed system. Method provides improving method of synthesis of labeled benzene and to use ion-molecular reaction of tritium-labeled phenyl cations for simultaneous, simple and a single-step synthesis of N-phenylpicolinium salts and phenyl-substituted picolines labeled with tritium that can be used in investigations of metabolism of biologically active heterocyclic derivatives.
 Method of production of surfactant alkoxy-(alkyl-substituted) methylpyridin chlorides / 2304577
Proposed method includes alkylation of pyridin by alkyl-substituted chloromethyl ethers which are obtained through interaction of three starting components: higher alcohols or their fractions, carbonyl compound which is just aldehyde or ketone and chlorinating agent containing sodium chloride and sulfuric acid.
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(57) Abstract: The invention relates to new chemical compound 2-methyl-3,4-trimethylenetrinitramine, which can be used as corrosion inhibitor of steel in saline environments in the oil industry or in the circulating water supply systems. table 1. The invention relates to new chemical compounds, specifically, 2-methyl-3,4-trimethylenetrinitramine General formula (1), which can be used as corrosion inhibitor of steel in saline aggressive environments, for example, in the oil industry or in the circulating water supply systems< / BR> In the literature there is no information about the synthesis and properties of 2-methyl-3,4-trimethylenetrinitramine specified connection obtained for the first time. There are a large number of corrosion inhibitors of steel produced on the basis of polyalkylimide, for example, reagent AND 1-(TU 103238-74), which is a mixture of modified polyalkylphenol or reagent ICAP-2, which is the product of condensation klimatisierung products with pyridine [,Z. Ibragimov and other chemical reagents for enhanced recovery of oil. M: the bowels of the Ali in hydrochloric acid. In addition, they have an extremely unpleasant odor that requires special measures for the protection of labour and environment. The closest in structure and properties to the declared object is the reagent Catopen [ibid], obtained from alkilbenzolsul and pyridine. He is one of the best inhibitors hydrochloric acid corrosion, but not effective enough in saline environments with high oxygen content. The aim of the invention is the identification of new derivatives of pyridine, effectively reducing the corrosion of steel in saline aggressive environments with high oxygen content. This goal is achieved by the synthesis of 2-methyl-3,4-trimethylenetrinitramine formula (1). The proposed connection is produced by mixing equimolar quantities of 2-methyl-3,4-trimethylaniline with benzyl chloride at 120-130oC for 4-6 hours Receive individual 2-methyl-3,4-trimethylenetrinitramine (1) with the release of 95-99% scheme: < / BR> Synthesis of 2-methyl-3,4 trimethylenetrinitramine (1) is illustrated by example 1. Example 1. In a glass reactor fitted with mechanical stirrer, thermocouple, heating jacket and 125oC is stirred for 5 hours. Get 2-methyl-3,4-trimethylenetrinitramine (1) with the release of 97%. Elemental analysis data (1). Found, %: C, 73.54; H, 6.98; N, 5.32; Cl 13.71. C16H18NCl. Calculated, %: C, 73.99; H, 6.94; N, 5.39; C1 13.68. The resulting mixture at a temperature above 140oC decomposes, poorly soluble in alcohols, ketones, insoluble in hydrocarbons, soluble in water. Testing the protective effects of 2-methyl-3,4-trimethylenetrinitramine (1) as a corrosion inhibitor were carried out in laboratory conditions on the EAST 39-099-79 "corrosion Inhibitors. Method of assessing the effectiveness of the protective action of corrosion inhibitors in oil-field wastewater", Vniisptneft, 1980. As corrosive environments used the model wastewater (MRV) of the following composition (d=1.1 g/cm3), g/l: CaSO42H2O - 1.4 CaCl22H2O - 2.3 NaCl - 144 MgCl26H2O - 2.2 The content of O2in the MRV was 4.5-5 mg/l and was determined according to the method of Winkler. The addition of inhibitor was desirables within 25-100 mg/l as metal samples used previously protected samples of steel 08 CL (GOST 1050-74). The test time was 6 h, and then opredeleniya, m3; - test time, h; < / BR> where1the corrosion rate in the environment, g/m2hour; 2the corrosion rate with inhibitor, g/m2hour Testing the protective effects of 2-methyl-3,4-trimethylenetrinitramine (1) is illustrated by example 2. Example 2. 2-Methyl-3,4-trimethylenetrinitramine receive according to example 1 (2-methyl-3,4-trimethylaniline - 13.3 g, benzylchloride - 12.65 g). Received 27.17 g of solid salt (1) is dissolved in 27.17 g of water and dosed at a concentration of 25 mg/l in mineralized waste water of the above composition with the oxygen content of 4.5-5 mg/l In aggressive environment placed a sample of steel 08 CL (GOST 1050-74) and maintain it for 6 hours at room temperature. The corrosion rate of the sample is 0.032 g(m2h), and the degree of protection is 94.4%. Other examples illustrating the protective properties of 2-methyl-3,4-trimethylenetrinitramine shown in the table. As shown by the test results, the proposed inhibitor exhibits a high inhibitory effect 94.4-98.4% when the concentration of the inhibitor 25-100 mg/l, whereas Catopen-And at a concentration of 100 mg/l protects the steel from corrosion at 96.3%. Thus, 2-methyl-3,4-oxygen at low rescode reagent (25-100 mg/l). 2-Methyl-3,4-trimethylenetrinitramine formula < / BR> as an inhibitor of acid corrosion of steel in saline environments.
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