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Universal neutralizing agent for ketonealdehyde resin and using method thereof

A technology of ketone-aldehyde resin and aldehydes, which is used in the field of production and processing of general-purpose ketone-aldehyde resins, can solve problems such as the absence of very effective technical solutions, the difficulty of accurately controlling the amount of acids added, and the impact on product quality indicators , to achieve the effect of simplifying the production process, preventing side reactions and reducing the difficulty of operation

Inactive Publication Date: 2010-10-20
深圳市一鸣化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method has the following disadvantages: after the reaction, it is necessary to add acids to neutralize. Since the amount of acids added is difficult to accurately control, the material after the neutralization reaction is often acidic or alkaline, and the remaining acid or alkali can catalyze resin molecules. The comprehensive reaction and trigger other side reactions, thus affecting the quality index of the product
Moreover, acid substances corrode the KR-130 synthetic resin manufacturing equipment, which seriously affects the service life of the equipment and is inconvenient to use
The above-mentioned problems have always existed in the industry, and there has been no very effective technical solution so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Press public technology, with cyclohexanone, methyl alcohol and basic catalyst etc., mixed reaction under certain conditions, after reaction finishes, adopt ethyl acetate as neutralizing agent, by ethyl acetate: basic catalyst=1.1: 1 (mol ratio), added to the reaction mixture to carry out neutralization reaction, and then the neutralized mixture is post-treated according to the public technology to obtain the product. Its softening point can be stably controlled within ±3°C of the required value, its chromaticity is less than No. 1, and its acid value is less than 0.3mgKOH / g.

[0014] Analytical test method:

[0015] Softening point: GB12007.6-89.

[0016] Chromaticity: GB12001.6-89.

[0017] Acid value: GB1674-79. The analytical test method is the same in the following examples.

Embodiment 2

[0019] According to the public technology, cyclohexanone, acetaldehyde and basic catalyst etc. are mixed and reacted under certain conditions. After the reaction, ethyl acetate:basic catalyst=2:1 (molar ratio) was added to the reaction mixture for neutralization reaction. Afterwards, the neutralized mixture is post-treated according to the public technology to obtain the product. Its softening point can be stably controlled within ±3°C of the required value, its chromaticity is less than No. 1, and its acid value is less than 0.3mgKOH / g.

Embodiment 3

[0021] According to the public technology, acetohexanone, formaldehyde and basic catalyst etc. are mixed and reacted under certain conditions. After the reaction is finished, wash with water first, and use acetic acid as a neutralizing agent. According to ethyl acetate: residual basic catalyst = 1.01: 1 (molar ratio), add to the reaction mixture for neutralization reaction. Afterwards, the neutralized mixture is post-treated according to the public technology to obtain the product. Its softening point can be stably controlled within ±3°C of the required value, its chromaticity is less than No. 1, and its acid value is less than 0.3mgKOH / g.

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Abstract

The invention belongs to the field of chemical material processing, in particular a processing method for a universal neutralizing agent used in ketonealdehyde resin. The universal neutralizing agent for the ketonealdehyde resin is mixed with ketone, aldehyde and basic catalysts in a reactionvessel for reaction under the universal reaction conditions to form ketonealdehyde resin mixed liquor. The neutralizing agent is characterized in that: a neutral substance capable of being hydrolyzed in a basic medium is used in the mixture for neutralization, and the neutral substance comprises compounds containing halogen or acyl or cyan. The invention aims to provide a method for preparing synthetic resin. The posttreatment process is simple, the defect that acid is used to neutralize so as to corrode equipment is avoided, and the product quality is improved.

Description

【Technical field】 [0001] The invention belongs to the field of chemical material processing, in particular to a production and processing method used in general-purpose ketone-aldehyde resins. 【Background technique】 [0002] In the prior art, the preparation process of synthesizing general-purpose resin is: ketones, aldehydes, basic catalysts, according to actual needs, can also consider adding auxiliary agents and solvents when necessary, and react under certain conditions. After the reaction is finished, neutralize with a certain amount of acid, wash it with water to make the pH of the material neutral, and finally dehydrate the above-mentioned reactant to obtain the finished product. Added acids include sulfuric acid, hydrochloric acid, acetic acid, oxalic acid, and the like. The above-mentioned manufacturing process is a common technology in the industry and has been widely used in production. The above preparation method is given in Chinese Patent Publication No. CN11...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G6/02C08K5/07C08K3/28C08K5/09C08K5/315
Inventor 方汉武
Owner 深圳市一鸣化工有限公司
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