WO2015089781A1 - Viscosity index improver for internal combustion engine oil - Google Patents

Viscosity index improver for internal combustion engine oil Download PDF

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Publication number
WO2015089781A1
WO2015089781A1 PCT/CN2013/089944 CN2013089944W WO2015089781A1 WO 2015089781 A1 WO2015089781 A1 WO 2015089781A1 CN 2013089944 W CN2013089944 W CN 2013089944W WO 2015089781 A1 WO2015089781 A1 WO 2015089781A1
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Prior art keywords
parts
viscosity index
index improver
internal combustion
combustion engine
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PCT/CN2013/089944
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French (fr)
Chinese (zh)
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龚金凤
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龚金凤
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Priority to PCT/CN2013/089944 priority Critical patent/WO2015089781A1/en
Publication of WO2015089781A1 publication Critical patent/WO2015089781A1/en

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M167/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound, a non-macromolecular compound and a compound of unknown or incompletely defined constitution, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/024—Propene
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/68—Shear stability
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines

Definitions

  • This invention relates to automotive lubricating oil compositions.
  • an internal combustion engine oil viscosity index improver is provided.
  • a first object of the present invention is to provide an internal combustion engine oil viscosity index improver which has good thickening ability and good shear stability.
  • Another object of the present invention is to provide an internal combustion engine oil viscosity index improver which is easy to produce and which can effectively reduce the manufacturing cost, thereby providing the consumer with an inexpensive and stable product.
  • An internal combustion engine oil viscosity index improver in weight ratio (all amounts appearing below, in weight ratio), the lubricating oil viscosity index improver being made of at least the following components:
  • Ethylene-propylene copolymer 20-50 parts; 5-10 parts of polyisobutylene bisbutylimide, 1-5 parts of polymethacrylate, 5-8 parts of detergent, 50-100 parts of base oil. Further, the ethylene-propylene copolymer is mixed with a styrene or hydrogenated styrene/conjugated diene polymer.
  • the ethylene-propylene copolymer is preferably used in an amount of from 20 to 30 parts.
  • the polyisobutylene bisbutylimide is preferably used in an amount of from 5 to 8 parts.
  • the detergent is a mixture of sulfurized calcium alkylphenol and calcium alkylsalicylate, and the weight ratio of sulfurized calcium alkylphenol to calcium alkylsalicylate is 1:1.
  • the base oil may be a mineral oil, a synthetic oil or any mixture of two or more selected from them.
  • the invention utilizes the thickening ability of the ethylene-propylene copolymer, and skillfully blends the polyisobutylene dibutyrimide and the polymethacrylate to effectively improve the thickening ability, shear stability and low temperature viscosity of the viscosity index improver. At the same time, the dosage of the lubricant viscosity index improver can be greatly reduced, and the cost can be reduced.
  • the present invention is superior in engine oils and can be used to produce API, ACEA and OEM latest specifications, as well as high viscosity index hydraulic oils and certain gear oils. detailed description
  • weight percentages below have different points in different embodiments, but these points together constitute a range of coverage, and the points within the scope of the present invention are within the protection scope of the present invention.
  • the following components are selected in terms of weight percent: 20 parts of ethylene-propylene copolymer; 5 parts of polyisobutylene bisbutylimide, 1 part of polymethacrylate, 5 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
  • a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
  • the following components are selected in weight percent: 50 parts of ethylene-propylene copolymer; polyisobutylene bisbutyryl 10 parts of imine, 5 parts of polymethacrylate and 8 parts of detergent; first cut the ethylene-propylene copolymer into small pieces, then add to the base oil, simultaneously heat up and mechanically or pneumatically stir, when the temperature rises to 70 Stir at -400 °C until fully mixed.
  • a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
  • the following components are selected in terms of weight percent: 20 parts of ethylene-propylene copolymer; 5 parts of polyisobutylene bisbutylimide, 2 parts of polymethacrylate, 6 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
  • a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
  • the following components are selected in terms of weight percent: 30 parts of ethylene-propylene copolymer; 4 parts of polyisobutylene bisbutylimide, 4 parts of polymethacrylate, 6 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
  • a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
  • the following components are selected in terms of weight percent: 30 parts of ethylene-propylene copolymer; 3 parts of polyisobutylene bisbutylimide, 3 parts of polymethacrylate, 7 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
  • a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
  • the product obtained from the implementation test of the present invention has good low temperature viscosity and excellent shear stability.
  • SSI according to Chinese industry standard, 10% dosage, 30 cycles of diesel nozzle
  • the chemical capacity is very high, and the raw materials used are extremely easy to purchase, and the cost is low, which can greatly reduce the amount of base oil. This can greatly reduce the cost of use.

Abstract

　The present invention relates to a viscosity index improver for an internal combustion engine oil, wherein the lubricating oil viscosity index improver is made of at least the following components by weight percent: an ethylene-propylene copolymer of 20-50 parts; polyisobutylene-bis-succinimide of 5-10 parts; polymethacrylate of 1-5 parts; a detergent of 5-8 parts; and a base oil of 50-100 parts. The viscosity index improver for an internal combustion engine oil has good thickening ability, and also has good shear stability. At the same time, it can be conveniently produced, which can effectively reduce the production costs.

Description

说 明 书 一种内燃机油粘度指数改进剂 技术领域  Description: An engine oil viscosity index improver
本发明涉及汽车润滑油组合物。 特别是内燃机油粘度指数改进剂。 背景技术  This invention relates to automotive lubricating oil compositions. In particular, an internal combustion engine oil viscosity index improver. Background technique
随着现代社会中车辆使用的增加，发动机的技术迅速发展， 这就对润滑油的 质量提出了更高的要求， 目前， 市场上存在的各种润滑油添加剂的使用， 主要是 改善润滑油的综合性能， 例如抗磨性、 抗氧化性、 耐压性等等， 提高起到了一定 的作用。  With the increase in the use of vehicles in modern society, the technology of the engine has developed rapidly, which puts higher demands on the quality of lubricating oil. At present, the use of various lubricating oil additives on the market is mainly to improve the lubricating oil. Comprehensive performance, such as abrasion resistance, oxidation resistance, pressure resistance, etc., has played a certain role.
特别是在内燃机油中， 要求具有的剪切稳定性， 又要具有较高的粘度指数。 因此， 中、低粘度指数基础油不适合做内燃机油的基础油。 这是由于粘指剂在实 际使用中要经受高温氧化， 在这种条件下引起聚合物解聚、 裂解、 氧化， 造成粘 度下降， 酸值增加， 环槽积碳增多， 粘环等系列问题， 因此， 调制高档多级内燃 机油首先应选择增稠能力大、剪切稳定性好的粘指剂， 然后再考察粘指剂的其它 性能是否满足要求。然而目前市面上的产品， 其增稠能力和剪切稳定性难以同时 得到兼顾。 发明内容  In particular, in internal combustion engine oils, shear stability is required, and a higher viscosity index is required. Therefore, medium and low viscosity index base oils are not suitable as base oils for internal combustion engine oils. This is because the adhesive agent is subjected to high temperature oxidation in actual use, and under such conditions, the polymer depolymerizes, cleaves, oxidizes, causes viscosity drop, acid value increases, ring groove carbon increases, and sticky ring, etc. Therefore, the modulation of high-grade multi-stage internal combustion engine oil should first select a sticky agent with high thickening ability and good shear stability, and then check whether other properties of the adhesive agent meet the requirements. However, at present, the thickening ability and shear stability of the products on the market are difficult to achieve at the same time. Summary of the invention
本发明的第一个目地是提供一种内燃机油粘度指数改进剂，该内燃机油粘度 指数改进剂具有良好的增稠能力， 同时具有良好的剪切稳定性。  A first object of the present invention is to provide an internal combustion engine oil viscosity index improver which has good thickening ability and good shear stability.
本发明的另一个目地是提供一种内燃机油粘度指数改进剂，该内燃机油粘度 指数改进剂便于生产， 能够有效地降低制作成本， 从而为消费者提供廉价且性能 稳定的产品。  Another object of the present invention is to provide an internal combustion engine oil viscosity index improver which is easy to produce and which can effectively reduce the manufacturing cost, thereby providing the consumer with an inexpensive and stable product.
一种内燃机油粘度指数改进剂， 以重量比计（下文出现的所有用量， 均是以 重量比计） ， 该润滑油粘度指数改进剂至少由以下组份制成：  An internal combustion engine oil viscosity index improver, in weight ratio (all amounts appearing below, in weight ratio), the lubricating oil viscosity index improver being made of at least the following components:
乙烯-丙烯共聚物， 20— 50份； 聚异丁烯双丁酰亚胺 5— 10份， 聚甲基丙烯 酸脂 1-5份、 清净剂 5— 8份， 基础油 50— 100份。 更进一步，所述乙烯 -丙烯共聚物混合有苯乙烯或氢化苯乙烯 /共轭二烯烃聚 合物。 Ethylene-propylene copolymer, 20-50 parts; 5-10 parts of polyisobutylene bisbutylimide, 1-5 parts of polymethacrylate, 5-8 parts of detergent, 50-100 parts of base oil. Further, the ethylene-propylene copolymer is mixed with a styrene or hydrogenated styrene/conjugated diene polymer.
所述乙烯-丙烯共聚物， 优选的用量为 20— 30份。  The ethylene-propylene copolymer is preferably used in an amount of from 20 to 30 parts.
所述聚异丁烯双丁酰亚胺， 优选的用量为 5— 8份。  The polyisobutylene bisbutylimide is preferably used in an amount of from 5 to 8 parts.
所述清净剂为硫化烷基酚钙和烷基水杨酸钙的混合物，硫化烷基酚钙和烷基 水杨酸钙的重量比为 1： 1。  The detergent is a mixture of sulfurized calcium alkylphenol and calcium alkylsalicylate, and the weight ratio of sulfurized calcium alkylphenol to calcium alkylsalicylate is 1:1.
所述基础油可以使用矿物油、 合成油或从中选择 2种以上的任意混合物。 本发明利用乙烯 -丙烯共聚物的增稠能力， 巧妙地配合上聚异丁烯双丁酰亚 胺和聚甲基丙烯酸脂能够有效地改善粘度指数改进剂的稠化能力、剪切安定性和 低温粘度， 同时可大幅度减少润滑油粘度指数改进剂的加剂量， 降低成本。  The base oil may be a mineral oil, a synthetic oil or any mixture of two or more selected from them. The invention utilizes the thickening ability of the ethylene-propylene copolymer, and skillfully blends the polyisobutylene dibutyrimide and the polymethacrylate to effectively improve the thickening ability, shear stability and low temperature viscosity of the viscosity index improver. At the same time, the dosage of the lubricant viscosity index improver can be greatly reduced, and the cost can be reduced.
且本发明在内燃机油中性能表现优越， 可用于生产 API、 ACEA及 OEM的最 新规格产品， 也可用于高粘度指数液压油和某些齿轮油。 具体实施方式  Moreover, the present invention is superior in engine oils and can be used to produce API, ACEA and OEM latest specifications, as well as high viscosity index hydraulic oils and certain gear oils. detailed description
下面通过实施例对本发明作进一步的说明。应当指出的是， 对于本发明的具 体说明， 并不作为对发明的具体限定， 凡以近似方式实现的技术方案， 均与发明 的具体实施等同。  The invention is further illustrated by the following examples. It should be noted that the specific description of the present invention is not intended to limit the invention, and the technical solutions implemented in an approximate manner are equivalent to the specific embodiments of the invention.
同时需要说明的是，下文中的重量百分比虽然在不同的实施例中具有不同的 点， 但是这些点共同构成一个涵盖范围， 对于在此涵盖范围内的点， 均属于本发 明的保护范围。  It should be noted that the weight percentages below have different points in different embodiments, but these points together constitute a range of coverage, and the points within the scope of the present invention are within the protection scope of the present invention.
【实施例 1】 。  [Example 1].
选取以重量百分比计的以下组份： 乙烯 -丙烯共聚物 20份； 聚异丁烯双丁酰 亚胺 5份， 聚甲基丙烯酸脂 1份、 清净剂 5份； 先将乙烯-丙烯共聚物切成小块， 然后加入基础油中， 同时升温并机械或者风动搅拌， 当温度升至 70-400 °C时恒温 搅拌至充分混合。  The following components are selected in terms of weight percent: 20 parts of ethylene-propylene copolymer; 5 parts of polyisobutylene bisbutylimide, 1 part of polymethacrylate, 5 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
所述清净剂， 选用硫化烷基酚钙和烷基水杨酸钙的混合物， 其中， 硫化烷基 酚钙和烷基水杨酸钙的重量比为 1： 1。  As the detergent, a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
【实施例 2】 。  [Example 2].
选取以重量百分比计的以下组份： 乙烯 -丙烯共聚物 50份； 聚异丁烯双丁酰 亚胺 10份，聚甲基丙烯酸脂 5份、清净剂 8份；先将乙烯-丙烯共聚物切成小块， 然后加入基础油中， 同时升温并机械或者风动搅拌， 当温度升至 70-400 °C时恒温 搅拌至充分混合。 The following components are selected in weight percent: 50 parts of ethylene-propylene copolymer; polyisobutylene bisbutyryl 10 parts of imine, 5 parts of polymethacrylate and 8 parts of detergent; first cut the ethylene-propylene copolymer into small pieces, then add to the base oil, simultaneously heat up and mechanically or pneumatically stir, when the temperature rises to 70 Stir at -400 °C until fully mixed.
所述清净剂， 选用硫化烷基酚钙和烷基水杨酸钙的混合物， 其中， 硫化烷基 酚钙和烷基水杨酸钙的重量比为 1： 1。  As the detergent, a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
【实施例 3】 。  [Example 3].
选取以重量百分比计的以下组份： 乙烯 -丙烯共聚物 20份； 聚异丁烯双丁酰 亚胺 5份， 聚甲基丙烯酸脂 2份、 清净剂 6份； 先将乙烯-丙烯共聚物切成小块， 然后加入基础油中， 同时升温并机械或者风动搅拌， 当温度升至 70-400 °C时恒温 搅拌至充分混合。  The following components are selected in terms of weight percent: 20 parts of ethylene-propylene copolymer; 5 parts of polyisobutylene bisbutylimide, 2 parts of polymethacrylate, 6 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
所述清净剂， 选用硫化烷基酚钙和烷基水杨酸钙的混合物， 其中， 硫化烷基 酚钙和烷基水杨酸钙的重量比为 1： 1。  As the detergent, a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
【实施例 4】 。  [Embodiment 4].
选取以重量百分比计的以下组份： 乙烯 -丙烯共聚物 30份； 聚异丁烯双丁酰 亚胺 4份， 聚甲基丙烯酸脂 4份、 清净剂 6份； 先将乙烯-丙烯共聚物切成小块， 然后加入基础油中， 同时升温并机械或者风动搅拌， 当温度升至 70-400 °C时恒温 搅拌至充分混合。  The following components are selected in terms of weight percent: 30 parts of ethylene-propylene copolymer; 4 parts of polyisobutylene bisbutylimide, 4 parts of polymethacrylate, 6 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
所述清净剂， 选用硫化烷基酚钙和烷基水杨酸钙的混合物， 其中， 硫化烷基 酚钙和烷基水杨酸钙的重量比为 1： 1。  As the detergent, a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
【实施例 5】 。  [Example 5].
选取以重量百分比计的以下组份： 乙烯 -丙烯共聚物 30份； 聚异丁烯双丁酰 亚胺 3份， 聚甲基丙烯酸脂 3份、 清净剂 7份； 先将乙烯-丙烯共聚物切成小块， 然后加入基础油中， 同时升温并机械或者风动搅拌， 当温度升至 70-400 °C时恒温 搅拌至充分混合。  The following components are selected in terms of weight percent: 30 parts of ethylene-propylene copolymer; 3 parts of polyisobutylene bisbutylimide, 3 parts of polymethacrylate, 7 parts of detergent; first cut ethylene-propylene copolymer into The small pieces are then added to the base oil while warming up and mechanically or pneumatically agitated. When the temperature is raised to 70-400 °C, the mixture is stirred at a constant temperature until it is thoroughly mixed.
所述清净剂， 选用硫化烷基酚钙和烷基水杨酸钙的混合物， 其中， 硫化烷基 酚钙和烷基水杨酸钙的重量比为 1： 1。  As the detergent, a mixture of calcium sulphate calcium sulphate and calcium alkyl salicylate is used, wherein the weight ratio of the calcium sulphate calcium sulphate to the calcium alkylsalicylate is 1:1.
从本发明的实施试验中得到的产品， 具有很好的低温粘度， 具有极佳的剪切安 定性， SSI(按照中国行业标准， 10%加剂量， 柴油喷嘴 30循环)可达到 10以下， 稠 化能力非常高， 而且所用的原材料极易采购， 成本低， 可大幅度减少基础油用量， 这能大大降低使用成本。 The product obtained from the implementation test of the present invention has good low temperature viscosity and excellent shear stability. SSI (according to Chinese industry standard, 10% dosage, 30 cycles of diesel nozzle) can reach 10 or less, thick The chemical capacity is very high, and the raw materials used are extremely easy to purchase, and the cost is low, which can greatly reduce the amount of base oil. This can greatly reduce the cost of use.
总之， 以上所述， 仅仅是对本发明实施的具体描述， 并不代表本发明所实施 的所有方式。在本发明目的及技术方案的基础上所做的等同变化及修饰， 均在发 明的保护范围内。  In conclusion, the above description is only a specific description of the implementation of the invention, and does not represent all the embodiments of the invention. Equivalent changes and modifications made on the basis of the objects and technical solutions of the present invention are within the scope of the invention.

Claims

权 利 要 求 书 claims
1、 一种内燃机油粘度指数改进剂， 其特征在于以重量比计， 该润滑油粘度 指数改进剂至少由以下组份制成： 1. An internal combustion engine oil viscosity index improver, characterized in that the lubricating oil viscosity index improver is made of at least the following components in terms of weight ratio:
乙烯-丙烯共聚物， 20— 50份； 聚异丁烯双丁酰亚胺 5— 10份， 聚甲基丙烯 酸脂 1-5份、 清净剂 5— 8份， 基础油 50— 100份； Ethylene-propylene copolymer, 20-50 parts; polyisobutylene bisbutyrimide 5-10 parts, polymethacrylate 1-5 parts, detergent 5-8 parts, base oil 50-100 parts;
2、 如权利要求 1所述的内燃机油粘度指数改进剂， 其特征在于所述乙烯- 丙烯共聚物混合有苯乙烯或氢化苯乙烯 /共轭二烯烃聚合物。 2. The internal combustion engine oil viscosity index improver as claimed in claim 1, wherein the ethylene-propylene copolymer is mixed with styrene or hydrogenated styrene/conjugated diene polymer.
3、 如权利要求 1所述的内燃机油粘度指数改进剂， 其特征在于所述乙烯- 丙烯共聚物， 其用量为 20— 30份。 3. The internal combustion engine oil viscosity index improver as claimed in claim 1, characterized in that the dosage of the ethylene-propylene copolymer is 20-30 parts.
4、 如权利要求 1所述的内燃机油粘度指数改进剂， 其特征在于所述聚异丁 烯双丁酰亚胺， 其用量为 5— 8份。 4. The internal combustion engine oil viscosity index improver as claimed in claim 1, characterized in that the polyisobutylene bisbutyrimide is used in an amount of 5 to 8 parts.
5、 如权利要求 1所述的内燃机油粘度指数改进剂， 其特征在于所述清净剂 为硫化烷基酚钙和烷基水杨酸钙的混合物，硫化烷基酚钙和烷基水杨酸钙的重量 比为 1： 1。 5. The internal combustion engine oil viscosity index improver as claimed in claim 1, characterized in that the detergent is a mixture of sulfurized calcium alkyl phenol and alkyl calcium salicylate, sulfurized calcium alkyl phenol and alkyl salicylic acid. The weight ratio of calcium is 1:1.
6、 如权利要求 1所述的内燃机油粘度指数改进剂， 其特征在于所述基础油 可以使用矿物油、 合成油或从中选择 2种以上的任意混合物。 6. The internal combustion engine oil viscosity index improver as claimed in claim 1, characterized in that the base oil can be mineral oil, synthetic oil or any mixture of two or more selected therefrom.
PCT/CN2013/089944 2013-12-19 2013-12-19 Viscosity index improver for internal combustion engine oil WO2015089781A1 (en)

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