Gear oil composition
A technology of composition and gear oil, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve problems such as reduction
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[0075] Preparation of organothiophosphonic acid A
[0076] Add 1000 grams of polyisobutylene with a number average molecular weight of 1000 in a three-necked flask equipped with electric stirring, add P 2 S 5 168 grams, gradually heat up from room temperature to 210°C, the heating rate is 30°C / hour, and react at a constant temperature of 210°C for 12 hours. At this time, the material gradually changes from colorless to brown, and 8.5 grams of water vapor is introduced for reaction and post-treatment . The obtained polyisobutylenethiophosphonic acid had a sulfur content of 5.2% and a phosphorus content of 2.2%, which was recorded as organothiophosphonic acid A.
[0077] Preparation of organothiophosphonic acid B
[0078] Add 1000 grams of polyisobutylene with a number average molecular weight of 2300 in a three-necked flask equipped with electric stirring, add P 2 S 5 158 grams, gradually warming up from room temperature to 225 ° C, heating rate 30 ° C / hour, 12 hours a...
Embodiment 1
[0080] In Example 1, the molar ratio of the raw material organic thiophosphonic acid A to alkyl salicylic acid was 1:1.5, and the saponification reaction was carried out by adding the raw materials at one time.
[0081] Add organic thiophosphonic acid A60 gram (molecular weight=1112, 0.054mol) and alkyl salicylic acid 62.72 grams (0.081mol) in the 500ml there-necked flask that temperature control system and electric stirring are installed, then add No. 120ml No. 200 solvent gasoline, Stir for 5 minutes, then add 8.9 grams of calcium oxide (0.159mol), add 5 grams of water (0.278mol), 2.2 grams of 98% concentrated sulfuric acid, and then heat up to 95 ° C for 6.5 hours. At this time, the material becomes a brown liquid. After the reaction Add 85 grams of 150SN diluent oil, then distill out the water, cool the material to 50°C, centrifuge for 30 minutes on a centrifuge with a rotating speed of 2000rpm, and distill after removing the slag to obtain a low-alkaline value detergent wi...
Embodiment 2
[0083] In Example 2, the molar ratio of the raw material organic thiophosphonic acid A to alkyl salicylic acid was 1:1.5, and the saponification reaction was carried out by adding the raw material twice.
[0084] In a 500ml three-necked flask equipped with a temperature control system and electric stirring, add 60 grams of organic thiophosphonic acid A (molecular weight is 1112, 0.054mol), then add 120ml No. 200 solvent gasoline, stir for 5 minutes, add 4.6 grams of calcium oxide (0.082 mol), add 3 grams of water (0.17mol), stir for 25 minutes, heat up to 95°C and react for 2 hours, at this time the material turns into a brown liquid. Then add 62.72 grams (0.081mol) of alkyl salicylic acid and react for 15 minutes, add 4.3 grams of calcium oxide (0.076mol), 2 grams of water (0.111mol), 2.2 grams of 98% vitriol oil, the control reaction temperature is 95 ℃, the reaction After 3.5 hours, add 85 grams of 150SN diluent oil after the reaction, then distill off the water, cool the m...
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