A new multifunctional industrial oil compound

Abstract

This invention relates to the field of industrial lubricant additives, specifically to a novel multifunctional industrial oil compound, comprising, by weight, a sulfurized olefin extreme pressure anti-wear agent, a phenolic antioxidant, an amine antioxidant, a phosphate ester anti-wear agent, a boronized phosphorus-containing polyisobutylene succinimide dispersant, a thiocarbamate, dodecenyl succinic acid, and a metal deactivator; the weight ratio of the sulfurized olefin extreme pressure anti-wear agent to the phosphate ester anti-wear agent is 1.2:1 to 5:1; the number average molecular weight of the boronized phosphorus-containing polyisobutylene succinimide dispersant is 1000 to 3000. The novel multifunctional industrial oil compound provided by this invention, through scientific formulation design and optimized preparation process, effectively solves the technical defects of existing industrial oil compound agents and possesses multiple significant beneficial effects.

Description

Technical Field

[0001] This invention relates to the field of industrial lubricant additives, and specifically to a novel multifunctional industrial oil compound. Background Technology

[0002] Industrial lubricant additives are the core raw materials for improving the performance of lubricants. Multifunctional industrial oil compound additives have become an important development direction in the field of lubricant additives because they can simultaneously impart multiple excellent properties to oils.

[0003] In current industrial production, equipment operating conditions are becoming increasingly diverse and demanding, placing comprehensive requirements on the extreme pressure anti-wear, anti-oxidation, rust prevention, demulsification, and high and low temperature stability properties of industrial oils. However, existing industrial oil compounding technologies still have many shortcomings. Most products are designed for single functions, limiting their applicability to various scenarios. Enterprises need to purchase multiple specialized compounding agents to meet different oil formulation needs, significantly increasing procurement and storage costs. Furthermore, when different single-function compounding agents are used in combination, the lack of synergistic design between components easily leads to poor compatibility, resulting in a decline in the performance of the formulated oil.

[0004] At the formulation design level, the extreme pressure and anti-wear components of some composite agents are not scientifically proportioned, making it difficult to achieve synergistic performance enhancement. Most dispersants are single-function types, which cannot meet the multiple requirements of dispersion, auxiliary anti-oxidation and extreme pressure. It is difficult to form an effective combination between various functional systems.

[0005] In terms of preparation technology, traditional processes often involve direct mixing of raw materials without stepwise activation and compounding of functional components. This results in incomplete component reactions and easy oxidation during stirring, leading to problems such as high impurity content and insufficient stability in the compound itself. Consequently, the formulated oil fails to meet the stringent operating requirements of industrial equipment in key performance aspects such as high-temperature aging and low-temperature stability. Therefore, developing a multifunctional industrial oil compound with a scientifically formulated, rationally processed, and widely adaptable product has become an urgent technical problem to be solved in the industry. Summary of the Invention

[0006] The primary objective of this invention is to provide a novel multifunctional industrial oil compound.

[0007] A further objective of this invention is to provide a novel multifunctional industrial oil compound, comprising, by weight, a sulfurized olefin extreme pressure anti-wear agent, a phenolic antioxidant, an amine antioxidant, a phosphate ester anti-wear agent, a boronized phosphorus-containing polyisobutylene succinimide dispersant, a thiocarbamate, dodecenyl succinic acid, and a metal deactivator; wherein the weight ratio of the sulfurized olefin extreme pressure anti-wear agent to the phosphate ester anti-wear agent is 1.2:1 to 5:1; and the number average molecular weight of the boronized phosphorus-containing polyisobutylene succinimide dispersant is 1000 to 3000.

[0008] Preferably, the weight parts of each component are: 10 to 58 parts of sulfurized olefin extreme pressure anti-wear agent, 14 to 32 parts of phenolic antioxidant, 5 to 19 parts of amine antioxidant, 13 to 38 parts of phosphate ester anti-wear agent, 1 to 6.5 parts of boronized phosphorus-containing polyisobutylene succinimide dispersant, 0.8 to 8 parts of thiocarbamate, 3 to 13 parts of dodecenyl succinic acid, and 0.5 to 2.2 parts of metal deactivator.

[0009] Preferably, the weight parts of each component are: 45 parts of sulfurized olefin extreme pressure anti-wear agent, 22 parts of phenolic antioxidant, 8 parts of amine antioxidant, 13 parts of phosphate ester anti-wear agent, 2 parts of boronized phosphorus-containing polyisobutylene succinimide dispersant, 4 parts of thiocarbamate, 5 parts of dodecenyl succinic acid, and 1 part of metal deactivator.

[0010] Preferably, the weight parts of each component are: 58 parts of sulfurized olefin extreme pressure anti-wear agent, 14 parts of phenolic antioxidant, 5 parts of amine antioxidant, 19 parts of phosphate ester anti-wear agent, 1 part of boronized phosphorus-containing polyisobutylene succinimide dispersant, 2 parts of thiocarbamate, 3 parts of dodecenyl succinic acid, and 0.5 parts of metal deactivator.

[0011] Preferably, the weight parts of each component are: 18 parts of sulfurized olefin extreme pressure anti-wear agent, 32 parts of phenolic antioxidant, 19 parts of amine antioxidant, 14 parts of phosphate ester anti-wear agent, 4 parts of boronized phosphorus-containing polyisobutylene succinimide dispersant, 5 parts of thiocarbamate, 7 parts of dodecenyl succinic acid, and 1 part of metal deactivator.

[0012] Preferably, the compound agent is added to the oil at a dosage of 0.8 to 1.3% by weight of the total weight of the oil.

[0013] A method for preparing the novel multifunctional industrial oil compound includes the following steps:

[0014] (1) Premixed activation: Phenolic antioxidants, amine antioxidants, and boronized phosphorus-containing polyisobutylene succinimide dispersant are added to a stainless steel reactor equipped with a stirring, electric heating temperature control, and reflux condenser. Stirring is started and the temperature is raised. After stirring at a constant temperature, a premixed solution is obtained.

[0015] (2) Gradient compounding: Add phosphate ester anti-wear agent to the premixed solution, adjust the stirring speed and heat up, stir at constant temperature and then add sulfurized olefin extreme pressure anti-wear agent dropwise. After the dropwise addition is completed, heat up again and stir at constant temperature to obtain the compound base solution.

[0016] (3) Homogenization and blending: Cool down the compound base liquid, add thiocarbamate, dodecenyl succinic acid and metal deactivator, adjust the stirring speed and stir at a constant temperature, and continuously introduce nitrogen gas during the stirring process;

[0017] (4) Post-processing: Stop heating and stirring, let it cool naturally to room temperature, and then filter it through a filter screen to obtain the composite product.

[0018] Preferably, in step (1), the stirring speed is 300 rpm, the temperature is raised to 60 to 70°C, and the stirring is carried out at a constant temperature for 35 to 40 minutes; in step (2), the stirring speed is adjusted to 450 rpm, the temperature is raised to 80 to 88°C, and the stirring is carried out at a constant temperature for 25 to 28 minutes. After the addition is completed, the temperature is raised to 100 to 105°C, and the stirring is carried out at a constant temperature for 45 to 50 minutes.

[0019] Preferably, in step (3), the compound base liquid is cooled to 70 to 78°C, the stirring speed is adjusted to 550 rpm, and the mixture is stirred at a constant temperature for 65 to 70 minutes, with a nitrogen flow rate of 0.7 to 1.0 L / min; in step (4), the filter screen is a 200-mesh stainless steel filter screen.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The novel multifunctional industrial oil compound provided by this invention effectively solves the technical defects of existing industrial oil compound through scientific formula design and optimized preparation process, and has multiple significant beneficial effects.

[0022] 2. This invention precisely selects and designs the proportions of each functional component of the composite agent, and determines a reasonable compounding ratio range for the extreme pressure anti-wear core component, thereby achieving synergistic performance enhancement of the system. The selected dispersant has multiple functions, which can effectively improve the compatibility between the functional components and construct a multi-system synergistic formula with antioxidant, extreme pressure anti-wear, rust prevention and deemulsification, and dispersion stability, fundamentally ensuring the comprehensive performance of the composite agent.

[0023] 3. The compound agent of the present invention has wide compatibility and can be optimized according to the needs of different industrial working conditions. It can meet the usage needs of various scenarios such as conventional industrial oil, oil for high-load friction conditions, oil for high-temperature conditions, and oil for high-humidity environments. It realizes the formulation requirements of one compound agent to be compatible with multiple oils, completely solves the problem of the compatibility limitation of existing single-function compound agents, and significantly reduces the procurement and storage costs of enterprises.

[0024] 4. This invention adopts a step-by-step preparation process. Through step-by-step processing of premixing activation, gradient compounding, and homogenization, combined with nitrogen protection measures, the activation degree and fusion degree of each component are effectively improved, oxidation problems in the preparation process are avoided, and the basic performance of the composite agent itself is guaranteed.

[0025] 5. The compound agent of this invention has a reasonable dosage design, and the modified oil has significant improvements in all core performance aspects. It can fully adapt to the diverse and harsh operating conditions of industrial equipment and has good industrial application value. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1:

[0028] Suitable for various scenarios: medium-load industrial gear oil, HM hydraulic oil, hydraulic transmission dual-purpose oil and other conventional industrial and vehicle oils, meeting the general needs of multiple scenarios.

[0029] Formula composition (parts by weight):

[0030] The mixture comprises: sulfurized olefin extreme pressure anti-wear agent 45, phenolic antioxidant 22, amine antioxidant 8, phosphate ester anti-wear agent 13, novel boronized phosphorus-containing polyisobutylene succinimide dispersant 2 (number average molecular weight 1500), thiocarbamate 4, dodecenylsuccinic acid 5, and metal deactivator 1. The sulfurized olefin and phosphate ester are compounded in a ratio of 3.46:1, which falls within the synergistic range of 1:1.2 to 1:5.

[0031] Preparation process:

[0032] Premixed activation: Add phenolic antioxidant, amine antioxidant, and novel boronized phosphorus-containing polyisobutylene succinimide dispersant to a 50L stainless steel reactor equipped with an anchor stirrer, electric heating temperature control device, and reflux condenser. Start stirring at 300 rpm, raise the temperature to 65℃, and stir at a constant temperature for 35 minutes to complete the activation of the antioxidant-dispersion system and obtain the premixed solution.

[0033] Gradient compounding: Add phosphate ester anti-wear agent to the premix, adjust the stirring speed to 450 rpm, heat to 85℃, and stir at a constant temperature for 25 minutes; add sulfurized olefin extreme pressure anti-wear agent dropwise at a rate of 6 kg / min using a metering pump, and after the dropwise addition is completed, heat to 100℃ and stir at a constant temperature for 45 minutes to achieve full integration of the extreme pressure anti-wear system with the premix to obtain the compound base liquid;

[0034] Homogenization and blending: Cool the compound base solution to 75°C, add thiocarbamate, dodecenyl succinic acid, and metal deactivator, adjust the stirring speed to 550 rpm, and stir at a constant temperature for 65 minutes. During this period, nitrogen gas is introduced through a nitrogen cylinder at a flow rate of 0.7 L / min to prevent oxidation of the components.

[0035] Post-processing: Stop heating and stirring, allow to cool naturally to room temperature, and filter through a 200-mesh stainless steel filter to obtain a brownish-yellow transparent composite product.

[0036] Dosage: 0.8% by weight.

[0037] Example 2:

[0038] Suitable for: Heavy-duty industrial gear oils, wind power gear oils, and special oils for construction machinery, which have high requirements for extreme pressure anti-wear performance and can cope with high-load friction conditions.

[0039] Formula composition (parts by weight):

[0040] The mixture comprises: 58 parts sulfurized olefin extreme pressure anti-wear agent, 14 parts phenolic antioxidant, 5 parts amine antioxidant, 19 parts phosphate ester anti-wear agent, 1 part novel boronized phosphorus-containing polyisobutylene succinimide dispersant (number average molecular weight 1500), 2 parts thiocarbamate, 3 parts dodecenylsuccinic acid, and 0.5 parts metal deactivator. The sulfurized olefin and phosphate ester are compounded in a ratio of 3.05:1 to enhance the synergistic effect of extreme pressure anti-wear.

[0041] Preparation process:

[0042] Premixed activation: Add phenolic antioxidant, amine antioxidant, and novel boronized phosphorus-containing polyisobutylene succinimide dispersant to a 50L stainless steel reactor equipped with an anchor stirrer, electric heating temperature control device, and reflux condenser. Start stirring at 300 rpm, raise the temperature to 65℃, and stir at a constant temperature for 35 minutes to complete the activation of the antioxidant-dispersion system and obtain the premixed solution.

[0043] Gradient compounding: Add phosphate ester anti-wear agent to the premix, adjust the stirring speed to 450 rpm, heat to 85℃, and stir at a constant temperature for 25 minutes; add sulfurized olefin extreme pressure anti-wear agent dropwise at a rate of 5 kg / min using a metering pump, and after the dropwise addition is completed, heat to 105℃ and stir at a constant temperature for 50 minutes to achieve full integration of the extreme pressure anti-wear system with the premix to obtain the compound base liquid;

[0044] Homogenization and blending: Cool the compound base solution to 75°C, add thiocarbamate, dodecenyl succinic acid, and metal deactivator, adjust the stirring speed to 550 rpm, and stir at a constant temperature for 65 minutes. During this period, nitrogen gas is introduced through a nitrogen cylinder at a flow rate of 0.7 L / min to prevent oxidation of the components.

[0045] Post-processing: Stop heating and stirring, allow to cool naturally to room temperature, and filter through a 200-mesh stainless steel filter to obtain a brownish-yellow transparent composite product.

[0046] Dosage: 1.2% by weight.

[0047] Example 3:

[0048] Suitable for: Turbine oils, long-life air compressor oils, high-temperature industrial oils, and other oils with high requirements for oxidation life, extending the service life of the oils.

[0049] Formula composition (parts by weight):

[0050] The composition includes: 18 sulfurized olefin extreme pressure anti-wear agent, 32 phenolic antioxidants, 19 amine antioxidants, 14 phosphate ester anti-wear agent, 4 novel boronized phosphorus-containing polyisobutylene succinimide dispersant (number average molecular weight 1500), 5 thiocarbamate, 7 dodecenyl succinic acid, and 1 metal deactivator. The proportion of phenolic and amine antioxidant components is enhanced to construct a highly efficient composite antioxidant system.

[0051] Preparation process:

[0052] Premixed activation: Add phenolic antioxidant, amine antioxidant, and novel boronized phosphorus-containing polyisobutylene succinimide dispersant to a 50L stainless steel reactor equipped with an anchor stirrer, electric heating temperature control device, and reflux condenser. Start stirring at 300 rpm, raise the temperature to 70℃, and stir at a constant temperature for 40 minutes to complete the activation of the antioxidant-dispersion system and obtain the premixed solution.

[0053] Gradient compounding: Add phosphate ester anti-wear agent to the premix, adjust the stirring speed to 450 rpm, heat to 85℃, and stir at a constant temperature for 25 minutes; add sulfurized olefin extreme pressure anti-wear agent dropwise at a rate of 6 kg / min using a metering pump, and after the dropwise addition is completed, heat to 100℃ and stir at a constant temperature for 45 minutes to achieve full integration of the extreme pressure anti-wear system with the premix to obtain the compound base liquid;

[0054] Homogenization and blending: Cool the compound base solution to 70°C, add thiocarbamate, dodecenyl succinic acid, and metal deactivator, adjust the stirring speed to 550 rpm, and stir at a constant temperature for 65 minutes. During this period, nitrogen gas is introduced through a nitrogen cylinder at a flow rate of 0.7 L / min to prevent oxidation of the components.

[0055] Post-processing: Stop heating and stirring, allow to cool naturally to room temperature, and filter through a 200-mesh stainless steel filter to obtain a brownish-yellow transparent composite product.

[0056] Dosage: 1.0% by weight.

[0057] Example 4:

[0058] Suitable for: hydraulic oil, dual-purpose hydraulic transmission oil, industrial oil for high humidity environments, and other oils that are prone to contact with water, improving rust prevention and demulsification capabilities.

[0059] Formula composition (parts by weight):

[0060] Sulfurized olefin extreme pressure anti-wear agent 32, phenolic antioxidant 19, amine antioxidant 11, phosphate ester anti-wear agent 23, novel boronized phosphorus-containing polyisobutylene succinimide dispersant 3 (number average molecular weight 1500), thiocarbamate 8, dodecenyl succinic acid 6, metal deactivator 1.

[0061] Preparation process:

[0062] Premixed activation: Add phenolic antioxidant, amine antioxidant, and novel boronized phosphorus-containing polyisobutylene succinimide dispersant to a 50L stainless steel reactor equipped with an anchor stirrer, electric heating temperature control device, and reflux condenser. Start stirring at 300 rpm, raise the temperature to 65℃, and stir at a constant temperature for 35 minutes to complete the activation of the antioxidant-dispersion system and obtain the premixed solution.

[0063] Gradient compounding: Add phosphate ester anti-wear agent to the premix, adjust the stirring speed to 450 rpm, heat to 85℃, and stir at a constant temperature for 25 minutes; add sulfurized olefin extreme pressure anti-wear agent dropwise at a rate of 6 kg / min using a metering pump, and after the dropwise addition is completed, heat to 100℃ and stir at a constant temperature for 45 minutes to achieve full integration of the extreme pressure anti-wear system with the premix to obtain the compound base liquid;

[0064] Homogenization and blending: Cool the compound base solution to 75°C, add thiocarbamate, dodecenyl succinic acid, and metal deactivator, adjust the stirring speed to 550 rpm, and stir at a constant temperature for 70 minutes. During this period, nitrogen gas is introduced through a nitrogen cylinder at a flow rate of 1.0 L / min to prevent oxidation of the components.

[0065] Post-processing: Stop heating and stirring, allow to cool naturally to room temperature, and filter through a 200-mesh stainless steel filter to obtain a brownish-yellow transparent composite product.

[0066] Dosage: 0.9% by weight.

[0067] Example 5:

[0068] Suitable for: automotive shock absorber oil, wide-temperature-range air compressor oil, industrial oils for cold regions, and other oils that require high performance at high and low temperatures, ensuring stability over a wide temperature range.

[0069] Formula composition (parts by weight):

[0070] Sulfurized olefin extreme pressure anti-wear agent 10, phenolic antioxidant 25, amine antioxidant 12, phosphate ester anti-wear agent 38, novel boronized phosphorus-containing polyisobutylene succinimide dispersant 6.5 (number average molecular weight 1200), thiocarbamate 0.8, dodecenyl succinic acid 13, metal deactivator 2.2.

[0071] Preparation process:

[0072] Premixed activation: Add phenolic antioxidant, amine antioxidant, and novel boronized phosphorus-containing polyisobutylene succinimide dispersant to a 50L stainless steel reactor equipped with an anchor stirrer, electric heating temperature control device, and reflux condenser. Start stirring at 300 rpm, raise the temperature to 60℃, and stir at a constant temperature for 35 minutes to complete the activation of the antioxidant-dispersion system and obtain the premixed solution.

[0073] Gradient compounding: Add phosphate ester anti-wear agent to the premix, adjust the stirring speed to 450 rpm, heat to 80℃, and stir at a constant temperature for 25 minutes; add sulfurized olefin extreme pressure anti-wear agent dropwise at a rate of 6 kg / min using a metering pump, and after the dropwise addition is completed, heat to 100℃ and stir at a constant temperature for 45 minutes to achieve full integration of the extreme pressure anti-wear system with the premix to obtain the compound base liquid;

[0074] Homogenization and blending: Cool the compound base solution to 75°C, add thiocarbamate, dodecenyl succinic acid, and metal deactivator, adjust the stirring speed to 550 rpm, and stir at a constant temperature for 65 minutes. During this period, nitrogen gas is introduced through a nitrogen cylinder at a flow rate of 0.7 L / min to prevent oxidation of the components.

[0075] Post-processing: Stop heating and stirring, allow to cool naturally to room temperature, and filter through a 200-mesh stainless steel filter to obtain a brownish-yellow transparent composite product.

[0076] Dosage: 1.1% by weight.

[0077] Example 6:

[0078] Suitable for: Special oils for construction machinery, oils for high temperature and high humidity environments, and industrial oils for long-term operation, etc., to cope with complex and harsh operating environments.

[0079] Formula composition (parts by weight):

[0080] The composition includes: 40 parts sulfurized olefin extreme pressure anti-wear agent, 20 parts phenolic antioxidant, 10 parts amine antioxidant, 16 parts phosphate ester anti-wear agent, 5 parts novel boronized phosphorus-containing polyisobutylene succinimide dispersant (number average molecular weight 2000), 4 parts thiocarbamate, 8 parts dodecenyl succinic acid, and 1.5 parts metal deactivator. The proportions of each system are comprehensively optimized to balance extreme pressure anti-wear, anti-oxidation, rust prevention, demulsification, and high and low temperature stability.

[0081] Preparation process:

[0082] Premixed activation: Add phenolic antioxidant, amine antioxidant, and novel boronized phosphorus-containing polyisobutylene succinimide dispersant to a 50L stainless steel reactor equipped with an anchor stirrer, electric heating temperature control device, and reflux condenser. Start stirring at 300 rpm, raise the temperature to 68℃, and stir at a constant temperature for 38 minutes to complete the activation of the antioxidant-dispersion system and obtain the premixed solution.

[0083] Gradient compounding: Add phosphate ester anti-wear agent to the premix, adjust the stirring speed to 450 rpm, raise the temperature to 88℃, and stir at a constant temperature for 28 minutes; add sulfurized olefin extreme pressure anti-wear agent dropwise at a rate of 7 kg / min using a metering pump, raise the temperature to 102℃ after the dropwise addition is completed, and stir at a constant temperature for 48 minutes to achieve full integration of the extreme pressure anti-wear system with the premix to obtain the compound base liquid;

[0084] Homogenization and blending: Cool the compound base solution to 78°C, add thiocarbamate, dodecenyl succinic acid, and metal deactivator, adjust the stirring speed to 550 rpm, and stir at a constant temperature for 68 minutes. During this period, nitrogen gas is introduced through a nitrogen cylinder at a flow rate of 0.9 L / min to prevent oxidation of the components.

[0085] Post-processing: Stop heating and stirring, allow to cool naturally to room temperature, and filter through a 200-mesh stainless steel filter to obtain a brownish-yellow transparent composite product.

[0086] Dosage: 1.3% by weight.

[0087] Comparative Example 1

[0088] Formulation composition: Based on Example 1, the novel boronized phosphorus-containing polyisobutylene succinimide dispersant was removed, and the remaining components were adjusted in equal weight proportions to: 46 parts sulfurized olefin extreme pressure anti-wear agent, 22.5 parts phenolic antioxidant, 8.2 parts amine antioxidant, 13.3 parts phosphate ester anti-wear agent, 4.1 parts thiocarbamate, 5.1 parts dodecenyl succinic acid, and 1.0 parts metal deactivator.

[0089] Preparation process: Same as in Example 1.

[0090] Dosage: 0.8% by weight.

[0091] Comparative Example 2:

[0092] Formula composition: completely consistent with Example 1.

[0093] Preparation process: All raw materials are added to a 50L stainless steel reactor at one time and stirred at 600 rpm for 2 hours at room temperature. The product is obtained by filtering through a 200-mesh stainless steel filter. There are no premixing activation, gradient compounding, or nitrogen protection steps.

[0094] Dosage: 0.8% by weight.

[0095] Comparative Example 3:

[0096] Commercially available single-function compound additives: HM hydraulic oil compound additive, dosage 0.8% by weight; heavy-duty industrial gear oil compound additive, dosage 2.5% by weight.

[0097] Existing technology combination compound: Mix the two commercially available compound agents mentioned above in a 1:1 weight ratio and add a dosage of 1.6% by weight to simulate the existing technology "combination and matching".

[0098] Comparative Example 4:

[0099] Formula composition (parts by weight): sulfurized olefin extreme pressure anti-wear agent 65, phenolic antioxidant 7, amine antioxidant 1, phosphate ester anti-wear agent 7, novel boronized phosphorus-containing polyisobutylene succinimide dispersant 0.5, thiocarbamate 9, dodecenyl succinic acid 2, metal deactivator 0.1.

[0100] Preparation process: Same as in Example 1.

[0101] Dosage: 0.8% by weight.

[0102] Comparative Example 5:

[0103] Formulation composition: Based on Example 1, the phosphate ester anti-wear agent is removed, the sulfurized olefin extreme pressure anti-wear agent is adjusted to 58 parts, and the remaining components are the same as in Example 1.

[0104] Preparation process: Same as in Example 1.

[0105] Dosage: 0.8% by weight.

[0106] To ensure that the technical solution of this invention is fully understood and implemented by those skilled in the art, the specific selection and commercial sources of each functional component in the composite agent of this invention are clearly explained as follows: all components are industrial-grade conventional raw materials, which can be directly purchased from the market or modified and prepared using conventional chemical methods in the field of lubricant additives, as detailed below:

[0107] The sulfurized olefin extreme pressure anti-wear agent is sulfurized isobutylene, commercially available under the brand name T321, which can be purchased from the additives plant of Lanzhou Refinery and Chemical Plant and the additives plant of Jinzhou Petrochemical Company. It is a conventional extreme pressure anti-wear raw material in the field of lubricating oil additives.

[0108] The phosphate ester anti-wear agent is an alkyl aryl phosphate ester, commercially available under the brand name TBPB, which can be purchased from Jinzhou Petrochemical Company Additives Plant and Wuxi Nanfang Lubricating Oil Additives Co., Ltd., and is suitable for the synergistic needs of industrial oil extreme pressure anti-wear systems.

[0109] The phenolic antioxidant selected is 4,4'-methylenebis(2,6-di-tert-butylphenol), commercially available under the brand name T501. It can be purchased from the Lanzhou Refinery Chemical Plant Additives Plant and the affiliated plant of Beijing Research Institute of Petroleum and Chemical Technology. It is a general-purpose phenolic antioxidant for lubricating oils.

[0110] The amine antioxidant selected is alkyl diphenylamine, commercially available under the brand name T531, which can be purchased from Jinzhou Petrochemical Company Additives Plant and Shanghai Hairun Chemical Co., Ltd. It can form a compound antioxidant system with phenolic antioxidants to achieve synergistic antioxidant effects.

[0111] The commercially available brand T161B-P of the boronized phosphorus-containing polyisobutylene succinimide dispersant can be purchased from Wuxi Nanfang Lubricating Oil Additives Co., Ltd. and Jinan Shengfeng Chemical Co., Ltd., or it can be prepared by conventional modification methods of polyisobutylene succinimide through boronization and phosphating. This dispersant has multiple functions of dispersing, auxiliary antioxidant and extreme pressure.

[0112] The thiocarbamate selected is molybdenum dialkyldithiocarbamate, commercially available under the grade T203. It can be purchased from Lanzhou Refinery Chemical Plant Additives Plant and Zibo Linzi Hengxin Chemical Co., Ltd. It is a conventional extreme pressure anti-wear auxiliary component for lubricating oil.

[0113] Dodecenyl succinic acid is a conventional industrial-grade product, commercially available under the brand name T746. It can be purchased from the affiliated factory of Beijing Research Institute of Petroleum and Chemical Technology and Wuxi Nanfang Lubricating Oil Additives Co., Ltd. It is a general-purpose rust inhibitor and demulsifier for lubricating oils.

[0114] The metal deactivator selected is methylbenzotriazole, commercially available under the brand name T706. It can be purchased from Lanzhou Refinery Chemical Plant Additives Plant and Shanghai Hairun Chemical Co., Ltd. It is a conventional metal deactivator for lubricating oil and can effectively inhibit the catalytic effect of metals on oil oxidation.

[0115] The reaction equipment used in this invention are all conventional and general-purpose equipment in the fields of chemical and lubricating oil additive production. The anchor stirrer and the electrically heated temperature-controlled stainless steel reactor can be purchased from Jiangsu Yangyang Chemical Equipment Manufacturing Co., Ltd. and Zibo Taiji Chemical Equipment Co., Ltd. The metering pump is a diaphragm metering pump, commercially available in the GM series, which can be purchased from Hangzhou Nanfang Special Pump Industry Co., Ltd. The nitrogen cylinder is a general-purpose industrial specification and can be purchased from industrial gas companies in various regions. All of the above equipment can be conventionally selected according to the actual production scale. The selection and procurement source of the equipment do not affect the implementation effect of the technical solution of this invention.

[0116] The nitrogen involved in this invention is industrial-grade nitrogen, which can be directly purchased from industrial gas companies in various regions and is a protective gas routinely used in chemical production.

[0117] Performance testing and results analysis:

[0118] Test objects and methods:

[0119] The properties of the composite agent itself: The appearance, kinematic viscosity, density, acid value, mechanical impurities, moisture, sulfur content, phosphorus content, nitrogen content, flash point, and copper strip corrosion of Examples 1 to 6 and Comparative Examples 1 to 2 and 4 to 5 were tested. The test methods followed the national standards GB / T265, GB / T1884, GB / T4945, GB / T511, GB / T260, GB / T388, GB / T7305, and GB / T3536, respectively.

[0120] Oil performance conditioning: Two core oils, No. 46 HM hydraulic oil and heavy-duty industrial gear oil, were selected as representatives and formulated according to the dosage specified in the above examples. The key performance indicators of the formulated oils were tested. A new high-temperature aging test of 150℃ for 500h and a low-temperature stability test of -40℃ for 100h were added, in accordance with the corresponding national and industry standards.

[0121] The test results are shown in Table 1 below:

[0122] Table 1. Test results of the basic properties of the composite agent:

[0123]

[0124] Table 2. Key performance test results of the core blended oil:

[0125]

[0126] Test Result Analysis:

[0127] Regarding the properties of the composite agent itself, Examples 1 to 6 all exhibited a transparent liquid state, with mechanical impurities and moisture content controlled below 0.03% and 0.04% respectively, and the copper sheet corrosion grade reached 1a. All basic performance indicators were superior to the comparative example. This result is attributed to the clear selection and proportion design of components: Example 2 strengthens the proportion of extreme pressure anti-wear components, with sulfur and phosphorus contents reaching 10.9% and 4.6% respectively, and sulfurized olefins and phosphate esters are compounded in an optimized ratio, laying the foundation for the excellent extreme pressure performance of heavy-duty industrial gear oils; Example 3 increases the proportion of phenol-amine antioxidant system, with nitrogen content reaching 3.1%, ensuring the improvement of oil oxidation life; Example 5 selects low molecular weight dispersants and reduces the proportion of high viscosity components, with a kinematic viscosity of only 9.3 mm² / s at 100℃, which is suitable for high and low temperature operating conditions; All examples use a novel boronized phosphorus-containing polyisobutylene succinimide with a number average molecular weight of 1000-3000 as a dispersant, which has the triple functions of dispersing, anti-oxidation, and extreme pressure assistance, effectively improving the compatibility of different functional components. In comparison, Comparative Example 1, lacking the dispersant, exhibited slight turbidity, with the mechanical impurity content rising to 0.08% and the copper sheet corrosion grade decreasing to 2a. Comparative Example 2, employing a traditional direct mixing process without premixing activation and gradient compounding, resulted in a turbid composite agent with a mechanical impurity content as high as 0.15% and a flash point dropping to 145℃. Comparative Example 4, with a proportion exceeding the synergistic range of its components, resulted in a dark brown, opaque composite agent with an acid value rising to 30.5 mg KOH / g and a comprehensive deterioration in all properties.

[0128] In Examples 1 and 2, the ratios of sulfurized olefins to phosphate esters were 3.46:1 and 3.05:1, respectively, both falling within the range of 1:1.2 to 1:5. The corresponding sintering loads for heavy-duty industrial gear oils were 3500N and 4200N, respectively, significantly higher than the 3050N of the single extreme pressure anti-wear system in Comparative Example 5. In contrast, the ratio in Comparative Example 4 was approximately 9.29:1, exceeding the synergistic range, with a sintering load of only 2500N, failing to meet national standards. This difference indicates that this synergistic range is crucial for ensuring extreme pressure anti-wear performance, and different ratios within this range can be optimized according to performance requirements, demonstrating the targeted and rational nature of the formulation design.

[0129] Regarding the performance of the formulated oils, the No. 46 HM hydraulic oil and heavy-duty industrial gear oil formulated in Examples 1 to 6 all met the corresponding national standards. Their core performance indicators were significantly better than the standards and comparative examples, which is closely related to the synergistic design of the formulation system and the optimization of the preparation process. In the No. 46 HM hydraulic oil test, Example 4, by enhancing the rust-preventive and anti-emulsification functions of dodecenyl succinic acid and extending the homogenization and blending time, achieved an anti-emulsification performance of 8 minutes and a 94% performance retention rate after 500 hours of high-temperature aging. Example 6 comprehensively optimized the proportions of each system, taking into account multiple performance requirements, achieving an anti-emulsification performance of 10 minutes, a four-ball wear scar diameter of 0.39 mm, and a 95% performance retention rate after high-temperature aging, demonstrating outstanding overall performance. In heavy-duty industrial gear oil testing, Example 2, employing a dual extreme pressure anti-wear system of sulfurized olefins and phosphate esters, achieved a maximum non-seizure load of 1350N, a sintering load of 4200N, and a four-ball wear scar diameter of 0.40mm, far exceeding Comparative Example 5, which uses a single extreme pressure anti-wear system. This fully demonstrates the enhanced extreme pressure anti-wear performance brought about by the synergistic effect of the two components. Example 6 exhibited excellent performance under extreme conditions, with no stratification at low temperatures and an acid value increase of only 0.6mgKOH / g during high-temperature aging, thanks to the synergistic effect of the optimized antioxidant and dispersion systems.

[0130] The advantages at the process level are equally significant: the stepwise heating and compounding process used in each embodiment fully activates the antioxidant-dispersion system through premixing activation, ensures uniform fusion of extreme pressure anti-wear components through gradient compounding, ensures stable dispersion of each functional component through homogeneous blending, and prevents oxidation with nitrogen protection. Compared with the traditional direct mixing process of Comparative Example 2, the demulsibility of the formulated oil improved from 28 minutes to 8-16 minutes, the low-temperature stability improved from stratification to no stratification, and the increase in acid value during high-temperature aging decreased from 3.2 mgKOH / g to 0.5-0.9 mgKOH / g. This fully demonstrates that the process can effectively improve the sufficiency and compatibility of component reactions, thereby optimizing the overall performance of the oil. Moreover, the process parameters are clear, highly repeatable, and meet the needs of industrial production.

[0131] Regarding application compatibility and dosage, the dosage in Examples 1 to 6 was controlled at 0.8-1.3% by weight, all within a reasonable range of 0.3-2.2% by weight, and lower than the 2.5% by weight of the commercially available single-function compound agent in Comparative Example 3. Furthermore, this invention overcomes the limitation of single-function compatibility in commercially available compound agents—the combined compound agent in Comparative Example 3, due to the lack of synergistic component design, exhibits a significant performance decline during cross-domain modulation, with a high-temperature aging performance retention rate of only 78%. In contrast, the embodiments of this invention can be optimized according to specific application scenarios, enabling one compound agent to be compatible with multiple oil products, significantly reducing enterprise procurement and storage costs.

[0132] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A novel multifunctional industrial oil compound, characterized in that, It is composed of sulfurized olefin extreme pressure anti-wear agent, phenolic antioxidant, amine antioxidant, phosphate ester anti-wear agent, boronized phosphorus-containing polyisobutylene succinimide dispersant, thiocarbamate, dodecenyl succinic acid, and metal deactivator in parts by weight; the weight ratio of sulfurized olefin extreme pressure anti-wear agent to phosphate ester anti-wear agent is 1.2:1 to 5:1; the number average molecular weight of boronized phosphorus-containing polyisobutylene succinimide dispersant is 1000 to 3000.

2. The novel multifunctional industrial oil compound according to claim 1, characterized in that, The weight parts of each component are as follows: 10 to 58 parts of sulfurized olefin extreme pressure anti-wear agent, 14 to 32 parts of phenolic antioxidant, 5 to 19 parts of amine antioxidant, 13 to 38 parts of phosphate ester anti-wear agent, 1 to 6.5 parts of boronized phosphorus-containing polyisobutylene succinimide dispersant, 0.8 to 8 parts of thiocarbamate, 3 to 13 parts of dodecenyl succinic acid, and 0.5 to 2.2 parts of metal deactivator.

3. The novel multifunctional industrial oil compound according to claim 2, characterized in that, The weight parts of each component are as follows: 45 parts of sulfurized olefin extreme pressure anti-wear agent, 22 parts of phenolic antioxidant, 8 parts of amine antioxidant, 13 parts of phosphate ester anti-wear agent, 2 parts of boronized phosphorus-containing polyisobutylene succinimide dispersant, 4 parts of thiocarbamate, 5 parts of dodecenyl succinic acid, and 1 part of metal deactivator.

4. The novel multifunctional industrial oil compound according to claim 2, characterized in that, The weight parts of each component are as follows: 58 parts of sulfurized olefin extreme pressure anti-wear agent, 14 parts of phenolic antioxidant, 5 parts of amine antioxidant, 19 parts of phosphate ester anti-wear agent, 1 part of boronized phosphorus-containing polyisobutylene succinimide dispersant, 2 parts of thiocarbamate, 3 parts of dodecenyl succinic acid, and 0.5 parts of metal deactivator.

5. The novel multifunctional industrial oil compound according to claim 2, characterized in that, The weight parts of each component are as follows: 18 parts of sulfurized olefin extreme pressure anti-wear agent, 32 parts of phenolic antioxidant, 19 parts of amine antioxidant, 14 parts of phosphate ester anti-wear agent, 4 parts of boronized phosphorus-containing polyisobutylene succinimide dispersant, 5 parts of thiocarbamate, 7 parts of dodecenyl succinic acid, and 1 part of metal deactivator.

6. The novel multifunctional industrial oil compound according to claim 1, characterized in that, The compound is added to the oil at a dosage of 0.8 to 1.3% by weight of the total weight of the oil.

7. A method for preparing the novel multifunctional industrial oil compound according to claim 1, characterized in that, Includes the following steps: (1) Premixed activation: Phenolic antioxidants, amine antioxidants, and boronized phosphorus-containing polyisobutylene succinimide dispersant are added to a stainless steel reactor equipped with a stirring, electric heating temperature control, and reflux condenser. Stirring is started and the temperature is raised. After stirring at a constant temperature, a premixed solution is obtained. (2) Gradient compounding: Add phosphate ester anti-wear agent to the premixed solution, adjust the stirring speed and heat up, stir at constant temperature and then add sulfurized olefin extreme pressure anti-wear agent dropwise. After the dropwise addition is completed, heat up again and stir at constant temperature to obtain the compound base solution. (3) Homogenization and blending: Cool down the compound base liquid, add thiocarbamate, dodecenyl succinic acid and metal deactivator, adjust the stirring speed and stir at a constant temperature, and continuously introduce nitrogen gas during the stirring process; (4) Post-processing: Stop heating and stirring, let it cool naturally to room temperature, and then filter it through a filter screen to obtain the composite product.

8. The preparation method according to claim 7, characterized in that, In step (1), the stirring speed is 300 rpm, the temperature is raised to 60 to 70°C, and the stirring is carried out at a constant temperature for 35 to 40 minutes; in step (2), the stirring speed is adjusted to 450 rpm, the temperature is raised to 80 to 88°C, and the stirring is carried out at a constant temperature for 25 to 28 minutes. After the addition is completed, the temperature is raised to 100 to 105°C, and the stirring is carried out at a constant temperature for 45 to 50 minutes.

9. The preparation method according to claim 7, characterized in that, In step (3), the compound base liquid is cooled to 70 to 78°C, the stirring speed is adjusted to 550 rpm, and the mixture is stirred at a constant temperature for 65 to 70 minutes. The nitrogen flow rate is 0.7 to 1.0 L / min. In step (4), the filter screen is a 200-mesh stainless steel filter screen.

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