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Phosphate-hydraulic oil composition

A hydraulic oil composition, composition technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problem of low thickening ability, etc., and achieve excellent low-temperature viscosity, excellent low-temperature fluidity, and excellent shear stability Effect

Active Publication Date: 2013-01-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned viscosity index improvers also have the disadvantage of low thickening ability at low dosages

Method used

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  • Phosphate-hydraulic oil composition
  • Phosphate-hydraulic oil composition
  • Phosphate-hydraulic oil composition

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Experimental program
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Embodiment Construction

[0041] The present invention will be described in detail below by examples, but the present invention is not limited thereto. Unless otherwise stated, all proportions and parts are calculated by mass. The substances used are as follows:

[0042] Substances required for the synthesis of viscosity index improvers:

[0043] Two diluents: TBP: Butyl Phosphate; TiBP: Isobutyl Phosphate

[0044] Originated from Beijing Wuzhou Century Red Star Chemical Co., Ltd., a first-class product

[0045] Two type a monomers: MMA: methyl methacrylate; BMA: butyl methacrylate

[0046] Three type b monomers HMA: hexyl methacrylate; DMA: decyl methacrylate;

[0047] LMA: dodecyl / tetradecyl mixed alkyl methacrylate

[0048] Two c-type monomers DOMA: 2-octyl dodecyl methacrylate;

[0049] DTMA: 2-decyl tetradecyl methacrylate

[0050] The above seven monomers come from Zhejiang Shengda Chemical Co., Ltd., first-grade product

[0...

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Abstract

The invention provides a phosphate-hydraulic oil composition, comprising the following ingredients: A, 1-15wt% of viscosity index improver; B, 0.1-2wt% of antioxidant; C, 0.01-0.5wt% of metal corrosion inhibitor; D, 0.01-1wt% of antirust agent; and E, the balance of phosphate basic solution, wherein the viscosity index improver used herein is prepared by polymerization of alkyl acrylic acid alkyl ester monomer and alkyl acrylic acid isomeric alkyl ester monomer. The composition disclosed herein has excellent viscosity control performance and low temperature performance, simultaneously has good shear stability, and is suitable for aviation hydraulic fluids.

Description

technical field [0001] The invention relates to a phosphate ester hydraulic oil composition, in particular to a phosphate ester hydraulic oil composition used for aviation hydraulic oil. Background technique [0002] The hydraulic oil used in aviation hydraulic system and high temperature and fire-resistant equipment needs to have excellent flame retardancy, good high and low temperature performance, good thermal and oxidation stability, good corrosion stability and low corrosion resistance in a wide temperature range. Viscosity change, that is, a high viscosity index. By adding a suitable viscosity index improver to the hydraulic oil, the oil can have a high viscosity index and good low-temperature fluidity, and can maintain good flow at the lowest possible operating temperature (such as high-altitude flight), and at the same time, it can be used in hydraulic oil. Sufficient viscosity is maintained at higher operating temperatures. Common aviation hydraulic oils include s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10N40/08
Inventor 陈晓伟梁宇翔贺景坚尹开吉唐红金阎欢
Owner CHINA PETROLEUM & CHEM CORP
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