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Compound preservative as well as preparation method and application thereof

A technology for compounding preservatives and compounds, used in additives, lubricating compositions, petroleum industry and other directions, can solve the problems of poor environmental friendliness, poor viscosity-temperature performance, and difficult to remove odors, and achieves improved water solubility, wear resistance, and Good corrosion and anti-corrosion effect, improve the effect of anti-freezing performance

Active Publication Date: 2022-03-25
QUAKER CHEM CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The widely used hydraulic fluids for door closers are all oil products, which have deficiencies in the protection of door closers, fire resistance, antifreeze, and environmental protection, and the cost is high , poor environmental friendliness
For example, CN106867631 discloses a composition suitable for door closers, which improves the viscosity index, but the sulfur-containing gear oil compound is used in the patent, and the odor is difficult to remove
CN102812114A Although the selected special base oil can have certain biodegradability, the viscosity-temperature performance is poor
CN1952091 discloses a hydraulic oil composition suitable for door closers, which cannot meet the requirements of flame resistance
CN112430493A discloses a degradable door closer oil composition with flame retardant effect. Polyol ester is selected as the base oil, which has certain low temperature and flame retardancy, but there are still deficiencies in flame resistance and environmental friendliness, and higher cost
CN112159703A proposes an environmentally friendly water-soluble door closer lubricant and its preparation method, which is similar to the traditional water glycol hydraulic fluid and needs to be improved in terms of aluminum protection and lubrication
[0005]Most of the existing door closers use ordinary hydraulic oil, and only use fire-resistant door closer oil in places with fire protection requirements, but the fire resistance is still low. Insufficient, the viscosity-temperature performance and low-temperature performance are all adjusted by additives
This product, once the additive fails, will affect the working effect of the door closer

Method used

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  • Compound preservative as well as preparation method and application thereof
  • Compound preservative as well as preparation method and application thereof
  • Compound preservative as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] This embodiment provides a composite preservative, including alkanolamide phosphate, benzotriazole, monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine.

[0072] Its preparation method is as follows:

[0073] (1) 17 parts of caprylic acid, 10 parts of n-dodecanedioic acid, 10 parts of oleic acid, 10 parts of 21 carbon dimer acid, 6 parts of monoethanolamine, 8 parts of diethanolamine, 5 parts of monoisopropanolamine, Mix 4 parts of diglycolamine and react at 150°C for 100 minutes to obtain alkanolamide.

[0074] (2) Add phosphorus pentoxide in an equimolar amount to the alkanolamide to the reaction system, and react at 90° C. for 2 hours to obtain the alkanolamide phosphate.

[0075] (3) Mix alkanolamide phosphate, 6 parts of monoethanolamine, 4 parts of diethanolamine, 5 parts of monoisopropanolamine, 6 parts of diglycolamine and 3 parts of benzotriazole at 90°C, and cool to Room temperature (25 ℃), that is.

Embodiment 2

[0077] This embodiment provides a composite preservative, including alkanolamide phosphate, 2,5-dimercaptothiadiazole disodium salt, monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine.

[0078] Its preparation method is as follows:

[0079] (1) Mix 20 parts of sebacic acid, 15 parts of oleic acid, 12 parts of behenic dimer acid, 10 parts of diethanolamine, 10 parts of monoisopropanolamine, and 5 parts of diglycolamine, and react at 120°C for 120 minutes , to give alkanolamides.

[0080] (2) Add phosphorus pentoxide in an equimolar amount to the alkanolamide to the reaction system, and react at 60° C. for 2.5 hours to obtain the alkanolamide phosphate.

[0081] (3) Mix alkanolamide phosphate, 5 parts of diethanolamine, 5 parts of monoisopropanolamine, 10 parts of diglycolamine and 5 parts of 2,5-dimercaptothiadiazole disodium salt at 60°C, Cool to room temperature (25 ° C), that is, too.

Embodiment 3

[0083] This embodiment provides a composite preservative, including alkanolamide phosphate, tolyltriazole, monoethanolamine, diethanolamine, monoisopropanolamine and diglycolamine.

[0084] Its preparation method is as follows:

[0085] (1) Mix 18 parts of capric acid, 18 parts of oleic acid, 8 parts of behenic acid dimer acid, 10 parts of monoethanolamine, 8 parts of monoisopropanolamine, and 5 parts of diglycolamine, and react at 180°C for 90 minutes. Alkanolamides are obtained.

[0086] (2) Add phosphorus pentoxide in an equimolar amount to the alkanolamide to the reaction system, and react at 100° C. for 1.5 h to obtain the alkanolamide phosphate.

[0087] (3) Mix alkanolamide phosphate, 8 parts of monoethanolamine, 4 parts of monoisopropanolamine, 10 parts of diglycolamine and 3 parts of methylbenzotriazole at 100°C, and cool to room temperature (25 ℃), that is.

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Abstract

The invention relates to a compound preservative as well as a preparation method and application thereof. The compound preservative comprises an alcohol amine compound, a phenyl azole / thiazole compound and alkanolamide phosphate. Alcohol amine compounds, phenyl azole / thiazole compounds and alkanolamide phosphate in the compound preservative are matched with one another and have a synergistic effect on corrosion resistance and corrosion prevention of metal materials, and the hydraulic fluid prepared from the compound preservative is high in flame resistance and environment-friendly, has good metal corrosion resistance and can be applied to the field of hydraulic engineering. Particularly, the coating has good aluminum corrosion resistance, and has important application value in the fields of door closers and the like.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and protection, and relates to a composite anticorrosion agent and its preparation method and application, in particular to a composite anticorrosion agent, its preparation method and its application in preparing hydraulic fluid. Background technique [0002] The door closer is a spring-like hydraulic device on the door head. When the door is opened, it can be compressed and released to automatically close the door. It must ensure that the door is closed to the initial position accurately and in time after it is opened. The hydraulic door closer (referred to as the door closer) is different from the traditional door closer, and achieves the buffering effect by throttling the liquid in the door closer. [0003] Since most of the door closers are now made of cast aluminum, higher requirements are placed on anti-corrosion performance. According to the working characteristics of the existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/10C10M173/02C10N30/12C10N30/08C10N30/02C10N30/06C10N30/18C10N40/08
CPCC10M141/10C10M173/02C10M2207/022C10M2207/046C10M2215/042C10M2215/223C10M2219/106C10M2223/04C10M2201/041C10M2209/107C10M2209/103C10N2030/12C10N2040/08C10N2030/08C10N2030/64C10N2030/02C10N2030/06C10N2030/18
Inventor 朱良伟
Owner QUAKER CHEM CHINA
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