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Corrosion passivator and preparation method for same

A technology of passivating agent and catalyst, which is applied in the direction of metal material coating process, etc., can solve the problems of poor adhesion of antirust agent, unsatisfactory treatment effect, easy to be corroded again, etc., and achieves long anticorrosion time and is suitable for large Large-scale production, remarkable effect of rust passivation

Inactive Publication Date: 2020-04-10
王娟娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The protection of metal materials in the prior art usually uses a metal rust passivator to treat the metal surface so that a thin film is formed on the surface to avoid metal corrosion caused by the contact of the metal with moisture or other chemical components. The acid solution and derusting solution contained in the derusting treatment process of the rust passivating agent are likely to cause the reduction of the strength of the steel itself. At the same time, for the steel surface treated with this kind of rust passivating agent, it is easy to be corroded again after cleaning
These traditional rust passivators generally have unsatisfactory treatment effects. Not only the antirust effect is not good, but sometimes the surface of metal equipment is corroded. Poor technical flaws
[0004] Chinese patent CN103409743A discloses a water-based metal antirust agent and a preparation method thereof. The antirust agent consists of 10-20 parts of dodecylbenzenesulfonic acid, 20-30 parts of pentaerythritol tetraoleate, and 40-30 parts of butyl oleate. 45 parts, 10-15 parts of o-toluidine, 7-15 parts of sodium sulfate, 10-20 parts of sodium hydroxide, 10-15 parts of sodium silicate, and 40-50 parts of water. It can be seen from the raw materials that there are still Contains a large amount of organic components, which will cause environmental pollution after volatilization into the air

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of rust passivator, comprising the steps of:

[0033]Step S1, preparation of cytidine 3-chloro-1,2-propanediol oleate: add cytidine 1kg, 3-chloro-1,2-propanediol oleate 1.54kg, sodium carbonate 0.3kg to dichloromethane 8kg, stirred and reacted at 30°C for 4 hours, then dichloromethane was removed by rotary evaporation, and cytidyl 3-chloro-1,2-propanediol oleate was obtained by using dichloromethane and water with a mass ratio of 1:3 ;

[0034] Step S2, preparation of copolymer: 1 kg of cytidine 3-chloro-1,2-propanediol oleate prepared in step S1, 4,4'-bis[(4-anilino-6-hydroxyethyl Amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt 1kg, polyethylene glycol monoallyl ether 1kg, 2,3-di Hydroxypropyl dihydrogen phosphate; (R)-[(4R,5R,7S)-5-vinyl-1-azabicyclo[2.2.2]octane-7-yl]-(6-methoxy Add 0.5kg of quinoline-4-yl)methanol, 0.5kg of allylthiourea, and 0.03kg of azobisisobutyronitrile into 12kg of tetrahydrofuran, stir and re...

Embodiment 2

[0039] A preparation method of rust passivator, comprising the steps of:

[0040] Step S1, preparation of cytidine 3-chloro-1,2-propanediol oleate: add 1kg of cytidine, 1.54kg of 3-chloro-1,2-propanediol oleate, and 0.4kg of potassium carbonate to 9kg of acetone , stirred and reacted at 32°C for 4.5 hours, and then the acetone was removed by rotary evaporation, and the mass ratio of dichloromethane and water was 1:3 to obtain cytidine 3-chloro-1,2-propanediol oleate;

[0041] Step S2, preparation of copolymer: 1 kg of cytidine 3-chloro-1,2-propanediol oleate prepared in step S1, 4,4'-bis[(4-anilino-6-hydroxyethyl Amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt 1kg, polyethylene glycol monoallyl ether 1kg, 2,3-di Hydroxypropyl dihydrogen phosphate; (R)-[(4R,5R,7S)-5-vinyl-1-azabicyclo[2.2.2]octane-7-yl]-(6-methoxy Add 0.5kg of quinolin-4-yl)methanol, 0.5kg of allylthiourea, and 0.035kg of azobisisoheptanonitrile into 13kg of tetrahydrofuran, stir an...

Embodiment 3

[0046] A preparation method of rust passivator, comprising the steps of:

[0047] Step S1, preparation of cytidine 3-chloro-1,2-propanediol oleate: add 1 kg of cytidine, 1.54 kg of 3-chloro-1,2-propanediol oleate, and 0.45 kg of sodium hydroxide to 10 kg of tetrahydrofuran , stirred and reacted at 35°C for 5 hours, and then removed tetrahydrofuran by rotary evaporation, and obtained cytidyl 3-chloro-1,2-propanediol oleate with a mass ratio of 1:3 of dichloromethane and water;

[0048] Step S2, preparation of copolymer: 1 kg of cytidine 3-chloro-1,2-propanediol oleate prepared in step S1, 4,4'-bis[(4-anilino-6-hydroxyethyl Amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt 1kg, polyethylene glycol monoallyl ether 1kg, 2,3-di Hydroxypropyl dihydrogen phosphate; (R)-[(4R,5R,7S)-5-vinyl-1-azabicyclo[2.2.2]octane-7-yl]-(6-methoxy Add 0.5kg of quinoline-4-yl)methanol, 0.5kg of allylthiourea, and 0.045kg of azobisisobutyronitrile into 13.5kg of tetrahydrofur...

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Abstract

The invention discloses a preparation method for a corrosion passivator. The method comprises the steps of (S1) preparation of cytidine3-chlorin-1,2-propylene glycol oleate, (S2) preparation of a copolymer, (S3) preparation of N-(chloracetyl)glycine ionized inositol niacinate, (S4) preparation of N-[beta-(N,N-diacetoxyl) aminoethyl]-gamma-(N-carbethoxy) aminopropyl trimethoxy silane modified ethoxyl-beta-cyclodextrin and (S5) preparation of the corrosion passivator. The invention also discloses the corrosion passivator prepared with the preparation method for the corrosion passivator. The corrosion passivator disclosed by the invention has the beneficial effects that comprehensive performance is excellent; corrosion passivation effects are significant; adhesion force is strong; anti-corrosion duration is long; durability is good; and production and use are safe and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment agents, in particular to a rust passivator and a preparation method thereof. Background technique [0002] In recent years, with the continuous and stable growth of my country's economy and the continuous improvement of people's living standards, the use of metal materials has increased year by year. Because of their advantages such as high hardness and high strength, they are widely used in industrial and agricultural production and people's daily life. , it is the witness of the development of human society. The development of human civilization and social progress are closely related to metal materials. However, metal parts made of metal materials are prone to rust during production, processing, transportation and long-term use, which affects their long-term performance. How to effectively solve the problem of metal corrosion and rust has become an urgent problem for those skill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C08B37/16C08F283/06C08F220/36C08F212/34
CPCC08B37/0012C08F283/065C23C22/05C08F220/36C08F212/34
Inventor 王娟娟
Owner 王娟娟
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