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Gear lubricating oil additive composition

A technology of gear lubricating oil and composition, which is applied in the direction of lubricating composition, additives, petroleum industry, etc., can solve the problem that gear oil is not low in phosphorus, achieve good economic and social benefits, low production cost, and convenient deployment Effect

Active Publication Date: 2008-11-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most representative compound additives for gear lubricants in the international market are Anglamol 6085 and Anglamol 1045 from Lubrizol, G252 and G252B from Exxon-Mobil, Hitec343 from Ethyl, etc. Not a low phosphorus, clean gear oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Additive composition (I), it comprises: 80.0wt% sulfurized isobutylene (component B); 10wt% trialkyl dithiophosphate (component C); 5wt% boronated succinimide (component Part D); 1 wt% borated olein (component E); 1 wt% thiadiazole derivatives (component F); 3 wt% HVI500 diluent oil (component A). Additive composition (II) is the same as composition (I) except that 80.0wt% sulfurized isobutylene of component (B) is replaced by 80wt% tert-butyl polysulfide. Compositions (I), (II) are 4.5wt% was added to 75w / 90 base oil, and the evaluation results are listed in Table 2.

[0020] Table 1 Properties of 75W / 90 base oil

[0021] project

[0022] Table 2 composition (I), (II) performance evaluation result

[0023] project

[0024] The experimental results show that using sulfurized isobutylene and tert-butyl polysulfide, the copper sheet corrosion performance and extreme pressure anti-wear performance of the composition can meet the index requirements, ...

Embodiment 2

[0026]Additive composition (III) comprising: 85.0 wt% sulfurized isobutylene (component B); 8 wt% thiophosphite amine salt (component C); 1 wt% fatty acid amide (component D); 0.1 wt% long Chain acid phosphite (component E); 0.1 wt% benzotriazole derivative (component F); 5.8 wt% of MVI500 diluent oil (component A). The additive composition (IV) is the same as the composition (III) except that 8wt% of phosphorothioate amine salt in component C is replaced by 8wt% of acid phosphate amine salt. The additive composition (V) is the same as composition (III) except that 8wt% phosphorothioate amine salt of component C is replaced by 8wt% neutral phosphorothioate. The additive composition (VI) is the same as the composition (III) except that 8 wt% of phosphorothioate amine salt in component C is replaced by 8 wt% of phosphonate amine salt. The additive composition (VII) is the same as the composition (III) except that 8wt% of phosphorothioate amine salt of component C is replaced by...

Embodiment 3

[0033] Additive composition (VIII) comprising: 80 wt% sulfurized isobutylene (component B); 10 wt% thiophosphite amine salt (component C), 3 wt% acidic phosphite nitrogen-containing compound condensation (component C) 2 wt% alkenyl succinate (component D); 1 wt% stearyl alcohol (component E); 1 wt% thiadiazole derivatives (component F); 3 wt% HVI500 diluent oil (component A). The additive composition (VIII) was added to 85W / 90 base oil at 3.8wt%, 1.2wt% to No. 100 base oil, and 0.6wt% to No. 680 base oil. The evaluation results are listed in 6, 7, and 8.

[0034] Table 5 Main properties of base oil

[0035] base oil

[0036] Evaluation result of table 6 composition (VIII) in 85W / 90 base oil

[0037]

[0038] Thermal Oxidation Stability (L-60-1)

[0039] Table 7 composition (VIII) evaluates the result in 100 base oils

[0040] project

[0041] Table 8 Evaluation results of composition (VIII) in 680 base oil

[0042] project ...

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PUM

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Abstract

The invention provides an additive composite for gear lubricating oil, comprising (A) a certain amount of mineral oil, (B) at least one type of extreme pressure additive with sulfurs, (C) at least one type of anti-wear additive with phosphors, (D) at least one type of anti-rusting additive, (E) at least one type of friction improver, and (F) at least one type of metal passivator. By adding the additive composite into base oil or into a mixture of the base oil according to weight percentage between 3.8 and 4.5, vehicle gear oil up to the indexes of GB13895-92(APIGL-5) standards is prepared. By adding the additive composite into the base oil according to the weight percentage between 0.6 and 1.2, industrial gear oil up to the indexes of GB5903-95 standards is prepared.

Description

(1) Technical field [0001] The invention relates to a lubricating oil additive composition, in particular to an additive composition for lubricating oil used in a gear transmission system, and belongs to the technical field of lubricating oil additives. (2) Background technology [0002] The development of gear lubricating oil is mainly to improve the thermal oxidation stability of gear oil and the cleanliness of parts, reduce the formation of sludge and deposits during the use of gear oil, so as to prolong the service life of gear oil, reduce vehicle and equipment maintenance, and save costs . There are several ways to improve the thermal oxidation stability of gear oil: (1) choose highly refined mineral oil or synthetic oil as the base oil of gear oil; (2) introduce high temperature antioxidant into gear oil; (3) introduce high temperature antioxidant into gear oil Detergent and dispersant. Approaches 1 and 2 can properly improve the thermal oxidation stability of gear o...

Claims

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Application Information

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IPC IPC(8): C10M141/12C10M135/02C10M133/16C10M137/10C10M135/36C10N30/14C10N30/06C10N30/12C10N40/04
Inventor 伏喜胜糜莉萍
Owner PETROCHINA CO LTD
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