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Hydraulic oil composition and preparation method thereof

A hydraulic oil composition and the technology of the composition are applied in the field of lubricating oil to achieve the effects of excellent low temperature performance and high viscosity index

Pending Publication Date: 2021-04-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing polymethacrylate viscosity index improvers can improve the viscosity-temperature performance of lubricating oils, there is still a lot of room for improvement

Method used

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  • Hydraulic oil composition and preparation method thereof
  • Hydraulic oil composition and preparation method thereof
  • Hydraulic oil composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0109] The following examples will be used to illustrate the present invention in further detail, but the present invention is not limited to these examples.

[0110] In the following examples and comparative examples, the respective contents of the copolymer and the diluent oil and the contents of each monomer in the copolymer are calculated according to the feed amount.

[0111] In the context of the present invention, including in the following Examples and Comparative Examples, each measurement method and calculation method were performed as follows.

[0112] 1. Gel Permeation Chromatography (GPC) Analysis

[0113] Operating instrument: Model 1515 gel permeation chromatography produced by Waters Corporation of the United States. The detector is a Waters2414 differential refractive index detector. The solvent used to configure the standard is chromatographically pure tetrahydrofuran produced by Acros. The chromatographic column is provided by Waters Company, which is a s...

Embodiment A

[0135] Under the protection of nitrogen, add 113kg of diluent oil (purchased from Ssangyong Company, the brand is 100N, the same below) into the reaction kettle equipped with mechanical stirring, heat to 83-91°C, and 270kg of the first monomer (ethyl methacrylate ester / hexyl methacrylate / isooctyl methacrylate / lauryl methacrylate mixture, where C 2 = 20% by weight, C 6 = 20% by weight, C 8 = 10% by weight, C 10 =50% by weight, X=6.5), the mixture A of 1.35kg benzoyl peroxide and 1.08kg dodecyl mercaptan is added dropwise in the reactor, simultaneously with the second monomer of 150kg (decyl methacrylate ester / lauryl methacrylate / tetradecyl methacrylate / hexadecyl methacrylate mixture, where C 10 = 30% by weight, C 12 = 33%, C 14 = 20%, C 16 =17% by weight, X=12.2), the mixture B of 0.75kg benzoyl peroxide and 0.6kg dodecylmercaptan was added dropwise in the reaction kettle. At the initial moment of dropping, the ratio A / B of the dropping amount of mixture A (kg / hour) to t...

Embodiment B

[0139] Under the protection of nitrogen, add 113kg of diluent oil (purchased from Ssangyong Company, the brand is 100N, the same below) into the reaction kettle equipped with mechanical stirring, heat to 83-91°C, and 100kg of the first monomer (methyl methacrylate ester / propane methacrylate / isooctyl methacrylate / decyl methacrylate mixture, where C 1 = 25% by weight, C 3 = 20% by weight, C 8 = 15% by weight, C 10=40% by weight, X=4.7), the mixture A of 0.5kg benzoyl peroxide and 0.36kg dodecyl mercaptan is added dropwise in the reactor, simultaneously with the second monomer of 320kg (nonyl methacrylate ester / lauryl methacrylate / tetradecyl methacrylate / hexadecyl methacrylate / octadecyl methacrylate mixture, where C 9 = 20% by weight, C 12 = 20%, C 14 = 55%, C 16 = 3% by weight, C 18 =2% by weight, X=13.5), the mixture B of 1.5kg benzoyl peroxide and 1.4kg dodecylmercaptan was added dropwise to the reaction kettle. At the initial moment of dropping, the ratio A / B of the d...

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Abstract

The invention provides a hydraulic oil composition and a preparation method thereof. The hydraulic oil composition of the present invention comprises: (A) a copolymer composition; (B) an anti-wear agent; (C) an antirust agent; (D) a metal deactivator; (E) an antioxidant; and (F) a base oil; the preparation method of the copolymer composition comprises the steps of: adding at least two monomers to a polymerization reaction system, and subjecting the at least two monomers to an addition copolymerization reaction, wherein each of the at least two monomers independently represents a compound represented by formula (I) and / or a mixture thereof, and in formula (I), a group R1 is a C1-C18 straight chain or branched chain alkyl group; and a group R2 is H or methyl. The hydraulic oil composition has excellent low-temperature performance, shear stability, thermal stability and comprehensive performance, is high in viscosity index, and can meet the use conditions of hydraulic equipment in extremely cold regions.

Description

technical field [0001] The invention relates to the field of lubricating oil, in particular to a hydraulic oil composition and a manufacturing method thereof. Background technique [0002] At present, energy saving and environmental protection have become the main driving force for the development of hydraulic oil, which puts forward new requirements for the viscosity, viscosity-temperature performance, and low-temperature performance of lubricating oil. High-viscosity index multi-grade hydraulic oil can effectively reduce the friction and wear of equipment during cold start, and the wide temperature range can reduce the labor cost of oil change in winter in low-temperature areas and the loss caused by equipment stagnation. At the same time, maintaining a high kinematic viscosity at high temperature also helps to improve the anti-wear ability of the oil. Therefore, ultra-high viscosity index ultra-low temperature hydraulic oil is the first choice for hydraulic equipment, es...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M145/14C10N40/08C10N30/08C10N30/02
CPCC10M169/04C10M145/14C10M2209/084
Inventor 鱼鲲张耀李云鹏李勇
Owner CHINA PETROLEUM & CHEM CORP
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