SU1203086A1 - 2-oxy-5-tert-butylphenyl-(ethoxycarbomethyl)-disulfide as ashless anticorrosion additive to lubricating oils - Google Patents

Abstract

2-OXY-5-gret-butpphenyl (ethoxycarbomethyl) -disulfide of the formula 38СНгСООС2Н5 as an ashless anti-corrosion additive for lubricating oils.

Description

The invention relates to new chemical compounds, more specifically, to 2-hydroxy 5-tert-by-methyl. (ethoxy-carboxymethyl) disulfide of formula

- V-SSCHT.

(one)

which can be used as an ashless anti-corrosion additive for lubricating oils.

The aim of the invention is to improve the anti-corrosion properties of lubricating oils.

Example. 0.1 mol of potassium hydroxide and 200 ml of isopropyl alcohol are placed in the reaction flask and the contents are stirred for 2 hours at B-TO C. Then the reaction mass is cooled to dp at room temperature and the calculated amount of 2-hydroxy is added dropwise. - heated butylthio phenol in benzene solution. The reaction is exothermic. After feeding 2-oxy ™ 5-butylthiophenol, the reaction mixture is stirred for 5-6 hours at 60–70 ° C. The temperature of the reaction mass is reduced to room temperature and 0.1 g of a sulfur atom is introduced, and the mixture is heated for 8 to 10 hours. Then, a necessary amount of ethyl monochlorine 1: hydrochloric acid is added dropwise. After completion of the reaction, the mixture is washed with water, the solvent is distilled off and the product is isolated by distillation under vacuum. Yield 92%, Ti. 141-142 C / 1 mm Hg, nj USAOO; df 1,2170 /,

Found: C 26,78; H P, 33 S 35.41.

Calculated,% t From 26.64 H 11 / J9; S 35,55.

Oil DS-and + compound of formula 1

03086 .2

2 Oxy 5-TET-butyl- (ethoxycarbo-methyl) disulfide dissolves well in lubricating oils and does not cause undesirable changes in their physicochemical properties.

The structure of the proposed 2-hydroxy-5-TET butyl (ethoxycarbomethyl) disulfide was established using IR and XR spectroscopy. The following characteristic vibration frequencies were detected in the IR spectra of an iO compound; stretching vibrations of the OH group at a frequency of 3350 vibrations of carbon7 f

15

20

25

thirty

35

the group with a frequency of 1730 cm; ring oscillations at frequencies of 805-825 and 870-885; indicating a 1,2,4-type of substitution; vibrations of the aromatic ring at a frequency of 1605 cm.

The PMR spectra confirm the presence of the OH group, the nature of the splitting of the signals of aromatic protons indicates a 1,2,4-substitution, there are signals of the TRE-butyl group at the aromatic ring and signals of the linear part of the molecule.

Anti-corrosive properties. The proposed compound is determined by the HAMI method in the presence of Oj02% -Horo naphthenate between 25 hours at 140 ° C in mineral oil DS-14 and petroleum jelly. Oil.

The test results are shown in the table.

 From the data in the table it is clear that 2-oxy-5 GR5 g -butyl (ethoxycarbomethyl) disulfide in its anti-corrosive properties exceeds 2 o1ssi-5 gret-butyl-phenylbutoxycarbonylmethyl sulfide (P) - known: compound.

1.0 1.5

1, 20

0.91

Vaseline oil + compound of formula 1

Oil DS-14 + connection P

Vaseline oil + compound P

1.95 1.72

1.50 1.50

Claims (1)

2-Oxy-5-t "t -butylphenyl (ethoxycarbomethyl) disulfide of the formula HE G ^ ysnsn ₂ coaxial ₂ n ₅ as an ash-free anti-corrosive agent, _{about a} rozionnoy additive to the lubricant; " lam I ί 1203086 2