Compound containing multielement alkamines, and preparation method and application thereof

A technology for amino alcohols and compounds, which is applied in the preparation of amino hydroxy compounds, the preparation of organic compounds, chemical instruments and methods, etc. Weakness and other problems, to achieve the effect of dense protective film, improved corrosion resistance, and stable adsorption
CN102516095BActive Publication Date: 2014-04-16JIANGSU SOBUTE NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU SOBUTE NEW MATERIALS
Publication Date
2014-04-16

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Abstract

The invention relates to a compound containing multielement alkamines, and a preparation method and application thereof as a concrete corrosion inhibitor. When being used as a concrete corrosion inhibitor, the compound containing multielement alkamines can enhance the adsorptive capacity for iron atoms, prevent the corrosion inhibitor from volatilization and loss, and enhance the corrosion resistance. The structural formula of the compound containing multielement alkamines is disclosed as (I), wherein R1 is H, R2 is -(CH2CH2NH)mH or -(CH2)nNH2, and m and n are respectively a whole number ranging from 2 to 6; or R1 and R2 are respectively one of -CH3, -CH2CH3, -CH2CH2CH3, -CH2CH2CH2CH3, -CH(CH3)2, -CH2CH(CH3)2, -CH(CH2)5(cyclohexyl) or -C(CH3)2CH2CH3. The compound containing multielement alkamines is prepared by reacting epoxide and organic amine under the action of a catalyst.
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Description

technical field

[0001] The invention relates to a compound containing polyhydric amino alcohols, its preparation method and application. Background technique

[0002] Reinforced concrete is currently the most widely used building material. Under normal circumstances, due to the strong alkaline environment inside the concrete, an oxide film will form on the surface of the steel bar, and no corrosion will occur. However, under harsh conditions such as marine environment, deicing salt, and saline-alkali land, steel bars in concrete usually undergo severe corrosion, which leads to concrete cracking and a decrease in structural bearing capacity, resulting in huge economic losses. According to reports, steel corrosion is the most important factor affecting the durability of concrete structures. Preventing and controlling the corrosion of steel bars is an important way to ensure the safety and durability of structures in service.

[0003] At present, the treatment methods to pre...

Claims

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