Preparation method of acid-alkali-resistant wetting agent

A wetting agent, acid and alkali resistance technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve the problem of limited application scope of wetting agents, achieve excellent acid and alkali resistance, easy control of reaction conditions, Simple to use effects

Inactive Publication Date: 2016-07-20

ANHUI SINOGRACE CHEM

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Problems solved by technology

[0002] Wetting agents are composed of hydrophilic groups and lipophilic groups. When in contact with the surface of a wet object, the lipophilic groups are attached to the surface of the object, and the hydrophilic groups extend outward into the liquid, making The liquid forms a continuous phase on the surface of the object, thereby playin...

Abstract

The invention discloses a preparation method of an acid-alkali-resistant wetting agent.The preparation method particularly comprises the steps that 0-15 parts by mass of maleic anhydride, 0-15 parts by mass of dodecyl polyoxyethylene ether, 0-15 parts by mass of nonylphenol polyoxyethylene ether and 0-5 parts by mass of p-toluenesulfonic acid are added into a reaction kettle, the vacuum degree is controlled within the range of 0.095 MPa-0.1 MPa at the temperature of 120 DEG C-220 DEG C, reacting is performed for 2-10 h, an acid value and a hydroxyl value of reaction liquid are measured, and if the acid value and the hydroxyl value do not reach the standard, reacting is continuously performed until the acid value and the hydroxyl value both reach the standard; if the acid value and the hydroxyl value reach the standard, the temperature of the reaction liquid is lowered to 80 DEG C-90 DEG C, 0-8 parts of by mass of sodium hydrogen sulfite and 0-5 parts by mass of sodium acetate are added, stirring is performed for 4 h, and then the acid-alkali-resistant wetting agent is obtained.The wetting agent has the advantages of being good in wetting effect, capable of resisting the extreme conditions of strong acid and strong alkali and wide in application range.

Application Domain

Transportation and packagingMixing +1

Technology Topic

Maleic anhydrideChemistry +12

Examples

Experimental program(4)

Example Embodiment

[0009] Example 1

[0010] Add 120g maleic anhydride, 100g lauryl alcohol polyoxyethylene ether, 20g nonylphenol polyoxyethylene ether and 20g p-toluenesulfonic acid into the reaction kettle, raise the temperature to 130℃, and control the vacuum degree between -0.098MPa After 8 hours of reaction, the acid value and hydroxyl value of the reaction solution were detected. The measured acid value of the reaction solution was 0.46mg and the hydroxyl value was 120mgKOH/g. The temperature of the reaction solution was lowered to 80℃, and 30g of sodium bisulfite, 20g was added. Sodium acetate, stirred for 4h to obtain an acid- and alkali-resistant wetting agent.

Example Embodiment

[0011] Example 2

[0012] Add 140g maleic anhydride, 90g lauryl polyoxyethylene ether, 60g nonylphenol polyoxyethylene ether and 30g p-toluenesulfonic acid into the reaction kettle, heat up to 160℃, and control the vacuum between -0.099MPa After 6 hours of reaction, check the acid value and hydroxyl value of the reaction solution. The measured acid value of the reaction solution is 0.38 and the hydroxyl value is 116. The temperature of the reaction solution is lowered to 80°C, and 30g sodium bisulfite and 30g sodium acetate are added. , Stir for 4h, then get acid and alkali resistant wetting agent.

Example Embodiment

[0013] Example 3

[0014] Add 120g maleic anhydride, 80g lauryl alcohol polyoxyethylene ether, 60g nonylphenol polyoxyethylene ether and 10g p-toluenesulfonic acid into the reaction kettle, raise the temperature to 200℃, and control the vacuum degree between -0.098MPa After reacting for 6 hours, check the acid value and hydroxyl value of the reaction solution. The measured acid value of the reaction solution is 0.65 and the hydroxyl value is 110. Both the acid value and the hydroxyl value are not up to the standard. Continue the reaction for 4 hours and check the acid value of the reaction solution again. And the hydroxyl value, the measured acid value of the reaction solution is 0.36, the hydroxyl value is 110, which reaches the standard value, the temperature of the reaction solution is reduced by 80 ℃, 20g sodium bisulfite, 20g sodium acetate are added, and the reaction solution is stirred for 4 hours to obtain Wetting agent for acids and bases.

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Classification and recommendation of technical efficacy words

easy to operate
Reaction conditions are easy to control

Preparation method of acid-alkali-resistant wetting agent

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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