Voprosy Khimii i Khimicheskoi Tekhnologii最新文献_第6页

Thermodynamic analysis of reactions of the celsian phase formation during the synthesis of thermal shock resistance ceramics based on eutectic glasses of the BaO–Al2O3–SiO2 system 基于BaO-Al2O3-SiO2体系的共晶玻璃合成抗热震陶瓷过程中硅相形成反应的热力学分析

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-06-01 DOI: 10.32434/0321-4095-2023-148-3-63-71

O. Zaichuk, A. Amelina, Y. Hordieiev, Y. Kalishenko, O. Ovchynnykov, Yu K Basov, Anatolii Sanin, O. Kulyk

{"title":"Thermodynamic analysis of reactions of the celsian phase formation during the synthesis of thermal shock resistance ceramics based on eutectic glasses of the BaO–Al2O3–SiO2 system","authors":"O. Zaichuk, A. Amelina, Y. Hordieiev, Y. Kalishenko, O. Ovchynnykov, Yu K Basov, Anatolii Sanin, O. Kulyk","doi":"10.32434/0321-4095-2023-148-3-63-71","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-148-3-63-71","url":null,"abstract":"The search for effective ways of obtaining densely sintered celsian ceramics at low firing temperatures usually requires a large volume of experimental research. The object of our research is the reactions of the formation of the celsian phase with the participation of glass components of eutectic compositions of the BaO–Al2O3–SiO2 system under low-temperature firing conditions. In this case, thermodynamic analysis was used as a tool to assess the probability of chemical reactions. This paper reports the results of theoretical and experimental studies into the features of the course of chemical reactions with the participation of glass components of eutectic compositions of the BaO–Al2O3–SiO2 system. It was revealed that once the stoichiometric ratio is maintained, the final product of the interaction between the components of eutectic glasses E-4, E-5 and E-6 with crystalline fillers is the celsian phase. The most probable is the formation of celsian when the components of eutectic glasses interact with Al2O32SiO2, which is a product of kaolinite (Al2O32SiO22H2O) dehydration. It was found that barium orthosilicate, in comparison with other barium silicates, exhibits the highest activity when interacting with charging components in the direction of formation of the сelsian phase already at the temperature of 7500С. At the temperature of 9000C, such a composition is noted to have an active transition of hexagonal celsian to monoclinic celsian. As a result, the content of monoclinic celsian increases significantly. The determined patterns allow making a reasonable choice of glasses in the BaO–Al2O3–SiO2 system with the lowest melting temperatures for the subsequent production of low-temperature сelsian ceramics.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"83 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81277068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Main features of the technological process of aging of bitumen obtained from the residues from Ukrainian crude oil processing 介绍了乌克兰原油加工残渣老化沥青工艺流程的主要特点

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-06-01 DOI: 10.32434/0321-4095-2023-148-3-54-62

О. Grynyshyn, М.І. Donchenko, V. Kochubei, Y. Khlibyshyn

{"title":"Main features of the technological process of aging of bitumen obtained from the residues from Ukrainian crude oil processing","authors":"О. Grynyshyn, М.І. Donchenko, V. Kochubei, Y. Khlibyshyn","doi":"10.32434/0321-4095-2023-148-3-54-62","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-148-3-54-62","url":null,"abstract":"The effects of the technological process of aging of bitumen obtained from the residues from processing of Ukrainian crude oil on the bitumen’s operational characteristics, structural-group composition, and thermal stability have been studied. The aging of bitumen with a thickness of 2 mm has been conducted under laboratory conditions at a temperature of 1630C for 5 and 10 h. Two types of bitumen, oxidized bitumen BND 60/90 and distillation bitumen BD 130/200, have been examined. It has been found that the bitumen quality worsens due to the technological process of aging, e.g. the bitumen hardness and refractoriness increase whereas the elasticity and frost resistance decrease. It has also been shown that, because of the technological process of aging, the content of resins in the bitumen decreases, the content of asphaltenes increases, and the content of oil components does not change significantly. The structural type of the oxidized bitumen changes thereat from a \"sol–gel\" type to a \"gel\" type. For the distillation bitumen, the structural type does not change. The derivatographic analysis has revealed that the bitumen thermal stability increases due to the technological process of aging. The reason for this is a decrease in the content of paraffinic ingredients in the bitumen along with the bitumen structure compaction due to the aging.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87371844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New nitrification inhibitors based on copper(II) complex compounds 基于铜(II)配合物的新型硝化抑制剂

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-06-01 DOI: 10.32434/0321-4095-2023-148-3-94-102

M.V. Malook, O. Matrosov, S. Kramarev, O. Shtemenko

{"title":"New nitrification inhibitors based on copper(II) complex compounds","authors":"M.V. Malook, O. Matrosov, S. Kramarev, O. Shtemenko","doi":"10.32434/0321-4095-2023-148-3-94-102","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-148-3-94-102","url":null,"abstract":"The work presents the results of research aimed at the synthesis of new nitrification inhibitors based on complex compounds of Cu2+ with 4-amino-1,2,4-triazole (ATC) and dicyandiamide (DCD). The purpose of the conducted work is the synthesis of new nitrification inhibitors based on complex copper compounds followed with subsequent studies of their structure, properties and biological activity. Four compounds of different compositions were obtained. A number of physical and chemical properties of substances were established: thermal behavior, and solubility in the KAS-28 system (a saturated solution of urea and ammonium nitrate with a nitrogen content of 28%)–water. With the help of infrared spectroscopy, the presence of functional groups and bonds inherent in ligands was proven in the synthesized compounds. Possible ways of coordination of 4-amino-1,2,4-triazole (monodentately through the atom N1 or N2) and dicyandiamide (through the group C=NH or CN with equal probability) were proposed. The content of Cu2+ ions in the synthesized compounds was determined by iodometry. The biological activity of the synthesized substances in relation to soil bacteria was investigated by the potentiometric method. The dynamics of changes in NH4+ and NO3– ions in research samples containing the obtained substances and commonly used nitrification inhibitors (ATC and DCD) was established. All results were equated relative to the control. It was established that the substance with the probable empirical formula [Cu(ATC)2(DCD)1(H2O)1]SO4 had the highest biological activity.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86164525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compensatory method for the synthesis of chelating polymeric ligands based on styrene and 5-methyl-5-hexene-2,4-dione as a way to increase the efficiency of macroinitiators of the b-diketonate type 以补偿法合成苯乙烯和5-甲基-5-己烯-2,4-二酮为基础的螯合聚合物配体，以提高b-二酮酸型大引发剂的效率

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-06-01 DOI: 10.32434/0321-4095-2023-148-3-116-125

O. V. Shevchenko, K. Burenkova, N.F. N.F. Fedko

{"title":"Compensatory method for the synthesis of chelating polymeric ligands based on styrene and 5-methyl-5-hexene-2,4-dione as a way to increase the efficiency of macroinitiators of the b-diketonate type","authors":"O. V. Shevchenko, K. Burenkova, N.F. N.F. Fedko","doi":"10.32434/0321-4095-2023-148-3-116-125","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-148-3-116-125","url":null,"abstract":"Polymeric chelating ligands based on styrene and unsaturated -diketone 5-methyl-5-hexene-2,4-dione (MHD) were prepared by radical copolymerization initiated by benzoyl peroxide in benzene solution at the volume ratios of monomers styrene:MHD=1:30 and 1:10. In this case, -diketone was added to the system by conventional (simultaneous) and compensatory (equal portions at conversions of 0, 5, and 10%) methods. The resulting products were studied by IR and 1H NMR spectroscopies. It has been shown that macrochelates obtained on the basis of such ligands differ in their structure and as a consequence in their macroinitiating ability in the grafting of vinyl monomers. Polymeric ligands synthesized at the ratio of 1:10, regardless of the preparation method, form mixed-ligand complexes in the subsequent complexation reaction with cobalt(II) acetate, which exhibit weak activity in styrene grafting and are not effective in the case of methyl methacrylate. The use of a small amount of MHD (1:30) in combination with the compensatory synthesis method leads to the predominant formation of intramolecular complexes of the -diketonate type, which are more active macroinitiators in the graft polymerization of styrene and methyl methacrylate than those obtained by the traditional simultaneous method of adding MHD.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81008589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and spectral properties of new xanthene-like fluorophore and light-filter 新型类黄杂烯荧光团及滤光剂的合成及光谱性质

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-06-01 DOI: 10.32434/0321-4095-2023-148-3-110-115

O. Farat, S. Varenichenko, V. Markov

{"title":"Synthesis and spectral properties of new xanthene-like fluorophore and light-filter","authors":"O. Farat, S. Varenichenko, V. Markov","doi":"10.32434/0321-4095-2023-148-3-110-115","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-148-3-110-115","url":null,"abstract":"By the reaction of N'-(4-formyl-2,3-dihydro-1H-benzo[b]xanthen-12-yl)-N,N-dimethylimidoformamide and N'-(6-formyl-7,8,9,10- tetrahydrocyclohepta[b]chromen-11-yl)-N,N-dimethylimidoformamide with malononitrile and cyanoacetic acid ethyl ester, the following two new dyes were synthesized by basic catalysis: N'-[4-(2,2-dicyanovinyl)-2,3-dihydro-1H-benzo[b]xanthen-12-yl]-N,N-dimethylimidoformamide and ethyl (2E)-2-cyano-3-(11-{[(1E)-(dimethylamino)methylene]amino}-7,8,9,10-tetrahydrocyclohepta[b]chromen-6-yl)acrylate. Both dyes in solution have a purple color with high extinction coefficients, but due to the different size of the partially saturated cycle, the first one displays fluorescence, and the second one does not. The fluorescence quantum yields for N'-(4-formyl-2,3-dihydro-1H-benzo[b]xanthen-12-yl)-N,N-dimethylimidoformamide decrease with decreasing solvent polarity. For example, the highest emission quantum yield is observed in methanol (2.76%), while the smallest is observed in tetrahydrofuran (1.04%). It is due to the fact that methanol implies a lesser energy consumption during the redistribution of electron density in the excited state. N'-[4-(2,2-dicyanovinyl)-2,3-dihydro-1H-benzo[b]xanthen-12-yl]-N,N-dimethylimidoformamide dye can be used as a fluorophore, whereas ethyl (2E)-2-cyano-3-(11-{[(1E)-(dimethylamino)methylene]amino}-7,8,9,10-tetrahydrocyclohepta[b]chromen-6-yl)acrylate dye can be used as a light filter to create a variety of materials and devices. In addition, the synthesized compounds can be used as building-blocks in organic chemistry.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"118 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85360212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reactions of 1,4-NCCN-, 1,4-NNCN- and 1,5-NCCCN-binucleophiles with dicarboxylic acids cyclic anhydrides as a method of heterocyclic compounds synthesis (a review) 1,4- nccn -、1,4- nncn -和1,5- nccn -二亲核试剂与二羧酸环酸酐反应合成杂环化合物(综述)

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-06-01 DOI: 10.32434/0321-4095-2023-148-3-29-53

D. Skoryna, O. Voskoboinik, S. I. Kovalenko

{"title":"Reactions of 1,4-NCCN-, 1,4-NNCN- and 1,5-NCCCN-binucleophiles with dicarboxylic acids cyclic anhydrides as a method of heterocyclic compounds synthesis (a review)","authors":"D. Skoryna, O. Voskoboinik, S. I. Kovalenko","doi":"10.32434/0321-4095-2023-148-3-29-53","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-148-3-29-53","url":null,"abstract":"Critical analysis of published information related to the features of reaction of 1,4-NCCN-, 1,4-NNCN and 1,5-NCCCN-binucleophiles with cyclic anhydrides of dicarboxylic acids has been presented in the review. It has been shown that the reaction of named anhydrides with 1,4-NCCN-binucleophiles leads to the formation of the imidazole fragment that contains carboxyl-containing moiety. It has been shown that benzimidazole derivatives are among the most studied products of reaction between 1,4-NCCN- and cyclic anhydrides of dicarboxylic acids due to the high availability of initial compounds. The approaches to chemical modification of latter compounds have been discussed as well. It has been found out that 1,4-NNCN-binucleophiles used in reactions with cyclic anhydrides of dicarboxylic acids are mostly presented by amidines and amidrazones. The effects of structures of initial compounds and conditions of reactions on the products of reaction have been described. Literature data shows that the reaction of 1,5-NCCCN-binucleophiles such as amides and hydrazides of anthranilic acid, diamino-substituted polycyclic arenes and 2-azaheterylanilines with cyclic anhydrides of dicarboxylic acids commonly results in the formation of pyrimidine derivatives. It has been established that the application of cyclic anhydrides of non-symmetric dicarboxylic acid as reagents may cause the ambiguity of the reaction pathways. However, the formation of single products of interaction between binucleophiles and non-symmetric anhydrides can be achieved by variation of reaction conditions. The biological activity of the discussed reaction products has been considered in detail. It has been shown that the above-mentioned compounds reveal antibacterial, antifungal, anticancer, immunomodulate, and antidiabetic activities.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73563999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conformational transformation of N-[arylsulfonylimino(phenyl)methyl]-1,4-benzoquinonemonoimines N-[芳基磺酰壬基(苯基)甲基]-1,4-苯并醌单亚胺的构象转化

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-05-01 DOI: 10.32434/0321-4095-2023-147-2-75-81

S. Konovalova, A. Avdeenko, V. V. Pirozhenko, S. Goncharova

引用次数: 0

Synthesis of pyrazolo[1,5-a][1,3,5]triazine and oxazolo[4,5-d]pyrimidine derivatives and study of their vasodilator activity 吡唑啉[1,5-a][1,3,5]三嗪和恶唑啉[4,5-d]嘧啶衍生物的合成及其血管扩张活性研究

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-05-01 DOI: 10.32434/0321-4095-2023-147-2-51-60

Y. Velihina, S. Pilyo, I.V. Ivanova, V. Brovarets

{"title":"Synthesis of pyrazolo[1,5-a][1,3,5]triazine and oxazolo[4,5-d]pyrimidine derivatives and study of their vasodilator activity","authors":"Y. Velihina, S. Pilyo, I.V. Ivanova, V. Brovarets","doi":"10.32434/0321-4095-2023-147-2-51-60","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-147-2-51-60","url":null,"abstract":"A number of pyrazolo[1,5-a][1,3,5]triazine and oxazolo[4,5-d]pyrimidine derivatives were synthesized and characterized. Pyrazolo[1,5-a][1,3,5]triazines with various substituents in the fourth position and a dichloromethyl group in the second position were obtained by the heterocyclization reaction of available N-(2,2-dichloro-1-cyanoethenyl)carboxamides and 5-aminopyrazoles. Oxazolo[4,5-d]pyrimidines were obtained by treating 2-phenyl-4-dichloromethylene-1,3-oxazol-5(4H)-one with the corresponding arylamidine hydrochloride in the presence of triethylamine. The resulting 4,5-dihydro-1H-imidazol-5(4)-ones undergo recyclization with subsequent cyclocondensation to the corresponding oxazolo[4,5-d]pyrimidin-7-ones when heated in pyridine. Oxazolo[4,5-d]pyrimidines with a labile chlorine atom in position 7, whose substitution with various amines leads to 7-aminoderivatives of oxazolo[4,5-d]pyrimidine, were obtained by heating the latter in phosphorus (V) oxychloride in the presence of N,N-dimethylaniline. The study of the effect of the synthesized compounds on vascular tone showed that some of the studied samples exhibited vasodilator activity of varying strength. It was established that 2-dichloromethyl-7-methyl-4-(furan-2-yl)pyrazolo[1,5-a][1,3,5]triazine and 2-dichloromethyl-7-methyl-4-(pyridin-3-yl)pyrazolo[1,5-a][1,3,5]triazine showed a pronounced dose-dependent vasodilator effect and therefore, subject to their further research, may be promising for the development of new vasodilator drugs. The study of the biological activity of oxazolo[4,5-d]pyrimidine derivatives did not reveal potential vasodilator agents among the presented compounds, as they demonstrated a low vasodilator effect or did not show vasoactivity.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"132 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73386652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and conversion of thiazinobenzothiazolium salts 噻唑类苯并噻唑盐的合成与转化

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-05-01 DOI: 10.32434/0321-4095-2023-147-2-61-66

O.V. Haleha, M. Povidaichyk, O. Svalyavin, E.M. Ostapchuk, M. Onysko

{"title":"Synthesis and conversion of thiazinobenzothiazolium salts","authors":"O.V. Haleha, M. Povidaichyk, O. Svalyavin, E.M. Ostapchuk, M. Onysko","doi":"10.32434/0321-4095-2023-147-2-61-66","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-147-2-61-66","url":null,"abstract":"This paper presents the results of research into the process of electrophilic intramolecular cyclization of 2-cinnamylthiobenzothiazole with halogens and tellurium halides. 2-Cinnamylthiobenzothiazole was prepared by alkylation of mercaptobenzothiazole with cinnamyl chloride in the presence of sodium alcoholate in an alcoholic medium. It was established that as a result of halocyclization of the model 2-cinnamylthiobenzothiazole with an excess of halogen, the thiazine ring is annealed with the formation of 3-halogeno-4-phenyl-3,4-dihydro-2H-[1,3]thiazino[2,3-b][1,3 ]benzothiazolium tribromide trihalides, which are effectively dehalogenated with acetone or sodium sulfite to form monohalides. Halocyclization of cinnamyl thioether of benzothiazole with iodine bromide in chloroform isolated 3-iodo-4-phenyl-3,4-dihydro-2H-[1,3]thiazino[2,3-b][1,3]benzothiazolium bromide, which was converted into 3-iodo-4-phenyl-3,4-dihydro-2H-[1,3]thiazino[2,3-b][1,3]benzothiazolium iodide by ion exchange reaction under the action of potassium iodide in acetone. The corresponding perchlorate was synthesized by the action of sodium perchlorate in methanol on 3-bromo-4-phenyl-3,4-dihydro-2H-[1,3]thiazino[2,3-b][1,3]benzothiazolium bromide. Spectral characteristics (1H NMR) of trihalides, monohalides and perchlorate indicate the preservation of the structure of the thiazinobenzothiazolium cation during ion exchange reactions. Tellurium-induced cyclization of cinnamyl thioether of benzothiazole does not occur. When 2-cinnamylthiobenzothiazole is treated with tellurium dioxide in an excess of halide acid, the nitrogen of the benzothiazole cycle is protonated and aquacomplexes of benzothiazolinium hexahalogenotellurates are formed. Instead, the action of p-alkoxyphenyltellurttrichloride on cinnamyl thioether benzothiazole leads to the formation of molecular complexes in the ratio of thioether:electrophile of 2:1. As a result of the conducted research, potentially biologically active thiazinobenzothiazolium halides were synthesized.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85308778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Salts and double tartratogermanates/stannates of 3d-metals as modifiers of unsaturated oligoesters 作为不饱和低聚酯改性剂的3d金属盐和双酒石酸酯/锡酸酯

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-05-01 DOI: 10.32434/0321-4095-2023-147-2-67-74

O. O. Kiose, S. M. Savin, E. Afanasenko

{"title":"Salts and double tartratogermanates/stannates of 3d-metals as modifiers of unsaturated oligoesters","authors":"O. O. Kiose, S. M. Savin, E. Afanasenko","doi":"10.32434/0321-4095-2023-147-2-67-74","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-147-2-67-74","url":null,"abstract":"The paper presents the results of the systematic research into effects of 3d-metals acetates, acetylacetonates and double tartrategermanates/stannates on the modification of polyglycol maleine phthalate. The copolymerization parameters of the prepared modified oligoesters with methyl methacrylate monomer and threeethyleneglycoldimethacrylate oligomer were determined. Modifiers were added to the reaction mixture before the start of polycondensation of maleic and phthalic anhydrides with ethylene glycol at the temperature of 1750C. The kinetics of copolymerization at the initial stages was determined by the dilatometry at the temperatures of 500C to 600C. It was established that the modification of polyglycol maleinate phthalate with the studied compounds allows significantly increasing the rate and reducing the temperature coefficient of the copolymerization reaction. There advantages of the investigated double multi-metal mixed ligand coordination compounds as modifiers were proved as compared to the standard industrial systems, acetylacetonates and metal acetates. The presented modifiers are able to improve significantly the characteristics of the semi-finished products in the industrial manufacturing of copolymers without the significant change of the technological process.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81436490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0