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Preparation method and application of hyperbranched polyurethane

A technology of hyperbranched polyurethane and polyurethane, which is applied in the field of organic corrosion inhibitors, and achieves the effects of simple preparation process, simple use method and excellent corrosion inhibition performance

Active Publication Date: 2022-02-15
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a relatively common hyperbranched polymer, hydroxyl-terminated hyperbranched polyurethane contains abundant N and O heteroatoms in its structure, and has great potential as a new type of organic corrosion inhibitor. However, no literature has reported its use in metal corrosion Applications in the field of protection

Method used

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  • Preparation method and application of hyperbranched polyurethane
  • Preparation method and application of hyperbranched polyurethane
  • Preparation method and application of hyperbranched polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The first step is to prepare hydroxyl-terminated hyperbranched polyurethane HPAEOH

[0041] like figure 1 as shown, figure 1 AB in Example 1 2 Scheme of the synthesis of monomers, HPAEOH-3 and HPAER-3.

[0042]Dissolve 10g of diethanolamine and 8.188g of methyl acrylate in 193mL of methanol at room temperature, mix well, raise the temperature to 40°C, keep the temperature for 4 hours, and distill under reduced pressure to obtain the hyperbranched monomer AB 2 . Wherein the molar ratio of diethanolamine to methyl acrylate is 1:1, and the molar ratio of diethanolamine to methanol is 1:50.

[0043] Dissolve 0.334g of trimethylolpropane and 0.2g of p-toluenesulfonic acid in 10g of the AB obtained above 2 In the monomer, mix evenly, under the protection of nitrogen, heat to 100°C, react for 6h, and dry in a vacuum oven at 70°C for 24h to obtain the third generation hyperbranched polyurethane HPAEOH-3. Of which trimethylolpropane and AB 2 The molar ratio of the monomer...

Embodiment 2

[0051] The first step is to prepare hydroxyl-terminated hyperbranched polyurethane HPAEOH

[0052] Dissolve 10g of diethanolamine and 16.377g of methyl acrylate in 154mL of methanol at room temperature, mix well, heat up to 20°C, keep warm for 6 hours, and distill under reduced pressure to obtain hyperbranched monomer AB 2 . Wherein the molar ratio of diethanolamine to methyl acrylate is 1:2, and the molar ratio of diethanolamine to methanol is 1:40.

[0053] Dissolve 0.026g of glycerin and 0.2g of p-toluenesulfonic acid in 10g of AB obtained above 2 In the monomer, mix evenly, under the protection of nitrogen, heat to 110°C, react for 6h, and dry in a vacuum oven at 70°C for 24h to obtain the sixth generation hyperbranched polyurethane corrosion inhibitor HPAEOH-6. of which glycerol and AB 2 The molar ratio of the monomers is 1:189, p-toluenesulfonic acid accounts for AB 2 2% of the total mass of monomers and glycerol.

[0054] The second step is to prepare hyperbranched...

Embodiment 3

[0061] The first step is to prepare hydroxyl-terminated hyperbranched polyurethane HPAEOH

[0062] Dissolve 10g diethanolamine and 12.283g methyl acrylate in 116mL methanol at room temperature, mix well, heat up to 50°C, keep warm for 2 hours, and distill under reduced pressure to obtain hyperbranched monomer AB 2 . Wherein the molar ratio of diethanolamine to methyl acrylate is 1:1.5, and the molar ratio of diethanolamine to methanol is 1:30.

[0063] Dissolve 0.593g of pentaerythritol and 0.3g of p-toluenesulfonic acid in 10g of AB obtained above 2 In the monomer, mix evenly, under the protection of nitrogen, heat to 120°C, react for 5h, and dry in a vacuum oven at 70°C for 24h to obtain the second generation hyperbranched polyurethane corrosion inhibitor HPAEOH-2. Among them pentaerythritol and AB 2 The molar ratio of the monomers is 1:12, p-toluenesulfonic acid accounts for AB 2 3% of the total mass of monomer and pentaerythritol.

[0064] The second step is to prepar...

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Abstract

The invention discloses a preparation method of hyperbranched polyurethane. The preparation method comprises the following steps: step 1, preparing hydroxyl-terminated hyperbranched polyurethane HPAEOH; and step 2, preparing hyperbranched polyurethane HPAER modified by a hydrophobic methyl ester derivative or an epoxy derivative. The invention also provides an application of the hyperbranched polyurethane prepared by the method in preparation of a corrosion inhibitor, especially an application in preparation of a metal corrosion inhibitor. The hyperbranched polyurethane disclosed by the invention has good water solubility, can well adapt to various corrosion systems and formulas, has good biodegradability and low toxicity, and belongs to an environment-friendly corrosion inhibitor.

Description

technical field [0001] The invention belongs to the technical field of organic corrosion inhibitors, and in particular relates to a preparation method and application of hyperbranched polyurethane. Background technique [0002] More than 90% of the metal material used is steel, and about 10% of the steel produced in the world every year turns into rust due to corrosion, and the resulting economic losses, waste of resources and environmental pollution are immeasurable. Corrosion inhibitors, as a chemical substance or compound used in corrosive media to prevent or slow down the corrosion of metal materials, have been widely used in the field of metal corrosion protection. Organic corrosion inhibitors have been vigorously promoted because of their good corrosion inhibition performance, easy synthesis and good water solubility, such as imidazolines, amino alcohols, heterocyclics, and organic amines, which have low toxicity, The advantages of high efficiency and environmental pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C23F11/173
CPCC08G83/005C23F11/173
Inventor 包春燕杜胜杰陈声毅叶凯庞施浩颜泽昕茆华女
Owner EAST CHINA UNIV OF SCI & TECH