dithiophosphoric acid
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2021 ◽  
Vol 05 ◽  
pp. 15-22
Author(s):  
N.N. Novotrozhina ◽  
◽  
Yu.B. Ramazanova ◽  
G.A. Gakhramanova ◽  
B.I. Musayeva ◽  
...  

Dithiophosphoric acid esters containing various functional groups have been synthesized. On the basis of allyloxybenzyl- and allyloxymethylbenzylchlorides, as well as sodium diisopropyldithiophosphate, allyloxybenzyl- and allyloxymethylbenzyldialkyldithiophosphates were obtained, respectively. 5-methyl-2-hydroxyphenylcarbonylmethyldiisopropyldithiophosphate was synthesized by the interaction of 5-methyl-2-hydroxy-chloroacetophenone and sodium diisopropyldithiophosphate. The synthesized compounds were studied as anti-wear and anti-seize additives for lubricating oils. Were also investigated their thermo-oxidative and anticorrosive properties. It was found that all synthesized compounds provide an improvement in the anti-wear and anti-seize properties of petroleum oils, and the efficiency depends on the presence of certain functional groups in the molecules of additives.



2018 ◽  
Vol 63 (3) ◽  
pp. 387-390 ◽  
Author(s):  
A. A. Voshkin ◽  
V. V. Belova ◽  
Yu. A. Zakhodyaeva


2015 ◽  
Vol 57 (11) ◽  
pp. 5100-5107
Author(s):  
Xuanmin Jie ◽  
Hui Wang ◽  
Yong Chen


2014 ◽  
Vol 189 (9) ◽  
pp. 1354-1360 ◽  
Author(s):  
Ilyas S. Nizamov ◽  
Gulnara T. Gabdullina ◽  
Dmitriy A. Terenzhev ◽  
Almaz R. Nurmukhametov ◽  
Ilnar D. Nizamov ◽  
...  




2014 ◽  
Vol 525 ◽  
pp. 185-190
Author(s):  
Hong Guan Wu ◽  
Hai Feng Li ◽  
Guo Xian Yu

LaF3nanoparticles were used as an additive to improve tribological performance of base oil stock. Their surface modifiers were prepared by a precipitation method, using two kinds of salts from dioctyl-dithiophosphoric acid and piperidine or di-(β-ethoxyl) stearamine. Morphology and structure of LaF3nanoparticles were investigated. The tribological behaviors of these solid-containing lubricating oils were measured by using a conventional four-ball machine. Wear scar surfaces on the test steel balls were examined by instrumental analysis to elucidate the anti-wear mechanism.



2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Yucundo Mendoza-Tolentino ◽  
Carlos Andrés Galán-Vidal ◽  
Giaan Arturo Álvarez-Romero ◽  
M. T. Ramírez-Silva ◽  
Ma. Elena Páez-Hernández

This paper presents the results concerning the first use of activated composite membranes (ACMs) for the facilitated transport of silver ions containing di-(2-ethylhexyl)-dithiophosphoric acid (DTPA) as the carrier. DTPA was immobilized by interfacial polymerization in a dense layer that was deposited in a porous layer, which was prepared on a nonwoven fabric support by phase inversion. The influence of fundamental parameters affecting the transport of silver ion as the carrier concentration in the membrane phase and stripping agent variation of the stripping solution have been studied. In the optimal conditions, the amount of silver transported across the ACMs was greater than 50%, whereas if the content of the carrier is modified, more than the 90% of the initial silver is removed from the feed phase.



2013 ◽  
Vol 24 (6) ◽  
pp. 490-494 ◽  
Author(s):  
Ilyas S. Nizamov ◽  
Gulnara T. Gabdullina ◽  
Almaz R. Nurmukhametov ◽  
Ilnar D. Nizamov ◽  
Rafael A. Cherkasov


2013 ◽  
Vol 58 (7) ◽  
pp. 872-879 ◽  
Author(s):  
V. V. Tatarchuk ◽  
A. P. Sergievskaya ◽  
V. I. Zaikovskii ◽  
T. M. Korda ◽  
A. V. Alekseev ◽  
...  


ChemInform ◽  
2013 ◽  
Vol 44 (15) ◽  
pp. no-no
Author(s):  
Arvind K. Yadav ◽  
Vishnu P. Srivastava ◽  
Lal Dhar S. Yadav


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