Method for producing wetting agent

A production method and wetting agent technology, applied in chemical instruments and methods, preparation of organic compounds, coatings, etc., can solve problems such as foaming, low surface tension, and high surface tension, and achieve low surface tension and low dynamic surface Tonicity, water solubility improvement effect

Active Publication Date: 2014-06-25
TIANJIN WATONG CHEM PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of wetting agents currently on the market, such as Surfynol®, Dynol®, EnviroGem®, Carbowet® and Dabco® brand surfactants, such as non-ionic surfactants Alkyl glycosides (APG) have low surface tension, but foam problems Seriously, some wetting agent foam, such as OT-10 wetting agent problem can be controlled, but the surface tension is high

Method used

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  • Method for producing wetting agent

Examples

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Effect test

Embodiment 1

[0022] A production method of a wetting agent, characterized in that: comprising the steps of:

[0023] Step 1. Add organic solvent A, basic catalyst M, and methyl isobutyl ketone into the reaction kettle, and react for 2 hours at a temperature of 35°C to obtain a reaction liquid, which is processed by high vacuum distillation process , to obtain 2,6,8-trimethyl-6-hydroxyl-4 nonanone; the preferred potassium hydroxide of the basic catalyst M, the added mass is 0.3% of the mass of methyl isobutyl ketone; the preferred organic solvent A is benzene; high vacuum The rectification process conditions are that the degree of vacuum is 10 Pa and the temperature is 65°C.

[0024] Step 2: 2,6,8-trimethyl-6-hydroxy-4-nonanone is dehydrated for 0.5 hours, and then catalyst N is added for catalytic hydrogenation reaction to generate 2,4,8-trimethyl-4-nonanone Alcohol, the 2,4,8-trimethyl-4-nonanol is filtered; the reaction conditions for catalytic hydrogenation are: temperature 60°C, react...

Embodiment 2

[0027] A production method of a wetting agent, characterized in that: comprising the steps of:

[0028] Step 1. Add organic solvent A, basic catalyst M, and methyl isobutyl ketone into the reaction kettle, and react for 0.5 hours at a temperature of 60° C. to obtain a reaction solution, which is processed by high vacuum rectification process , to obtain 2,6,8-trimethyl-6-hydroxyl-4 nonanone; basic catalyst M is preferably a mixture of potassium hydroxide and sodium hydroxide, and the added quality is 0.3% of the quality of methyl isobutyl ketone; organic solvent A Benzene is preferred; the high vacuum rectification process conditions are as follows: a vacuum degree of 50 Pa and a temperature of 115°C.

[0029] Step 2: 2,6,8-trimethyl-6-hydroxy-4-nonanone is dehydrated for 2 hours, and then catalyst N is added to carry out catalytic hydrogenation reaction to generate 2,4,8-trimethyl-4-nonanone Alcohol, the 2,4,8-trimethyl-4-nonanol is filtered; the reaction conditions for cata...

Embodiment 3

[0032] A production method of a wetting agent, characterized in that: comprising the steps of:

[0033] Step 1. Add organic solvent A, basic catalyst M, and methyl isobutyl ketone into the reaction kettle, and react for 1 hour at a temperature of 53° C. to obtain a reaction liquid, which is processed by high vacuum distillation process , to obtain 2,6,8-trimethyl-6-hydroxyl-4 nonanone; basic catalyst M is preferably triethylamine, and the added mass is 0.2% of the mass of methyl isobutyl ketone; organic solvent A is preferably 1,2- Dichloroethane; high vacuum rectification process conditions are, the vacuum degree is 45Pa, and the temperature is 91°C.

[0034]Step 2: 2,6,8-trimethyl-6-hydroxy-4-nonanone is dehydrated for 1 hour, and then catalyst N is added to carry out catalytic hydrogenation reaction to generate 2,4,8-trimethyl-4-nonanone Alcohol, the 2,4,8-trimethyl-4-nonanol is filtered; the reaction conditions for catalytic hydrogenation are: temperature 45°C, reaction t...

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Abstract

The invention belongs to the technical field of wetting agents and in particular relates to a method for producing a wetting agent. The method comprises the following steps: reacting methyl isobutyl ketone to obtain 2,6,8-trimethyl-6-hydroxy-4 nonanone, reacting the 2,6,8-trimethyl-6-hydroxy-4 nonanone to obtain 2,4,8-trimethyl-4-nonyl alcohol, and reacting the 2,4,8-trimethyl-4-nonyl alcohol to obtain a highly branched-chain nonyl alcohol derivative. The method has the beneficial effects that the wetting agent has extremely low static and dynamic surface tension, and fluidity and leveling property are promoted; the product is low-foaming and can be applied to a foam inhibition wetting agent in a waterborne system; the wetting agent is silicon-free, oil-free and non-toxic; the conversion rate of the process is high.

Description

technical field [0001] The invention belongs to the technical field of wetting agents, in particular to a production method of wetting agents. Background technique [0002] Wetting agents are surface-active compounds which reduce the surface tension of especially aqueous coatings, thereby promoting, for example, substrate wetting and flow. Substrate wetting agents are especially important to avoid defects in the coating film when the substrate has low surface tension or is contaminated with oily substances. Substrate wetting agents can be used in both liquid and solid form and are generally commercially available product-forming mixtures of different surface-active compounds. These surface-active compounds have amphiphilic properties, ie they generally consist of molecules having hydrophilic and hydrophobic moieties. There are many types of wetting agents currently on the market, such as Surfynol®, Dynol®, EnviroGem®, Carbowet® and Dabco® brand surfactants, such as non-ion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/11C07C41/03C08G65/28C09D7/12
CPCC07C29/145C07C41/03C07C45/72C08G65/2609C09D7/63C09D7/65C07C43/11C07C49/17C07C31/125
Inventor 张舜
Owner TIANJIN WATONG CHEM PROD CO LTD
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