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Preparation process for mixed alkyl phenol aldehyde resin condensation compound

A technology of an alkyl phenolic resin and a manufacturing method, which is applied in the field of manufacture of mixed alkyl phenolic resin condensate, can solve the problem of affecting the quality and performance of rosin modified resin products, unfavorable stable control and improvement of product quality, changing the condensate and rosin Reaction performance and other problems, to achieve the effect of easy control of product quality, easy control of preparation process, and avoidance of continued condensation

Inactive Publication Date: 2005-10-19
耿国庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. This process uses liquid formaldehyde to synthesize alkylphenolic resin condensate in a strong basic catalyst system. The liquid formaldehyde itself contains a lot of water. At the same time, it is necessary to use hydrochloric acid to neutralize the strong basic catalyst in the system after the condensation reaction is completed. , and washed with water to remove the salt produced by the neutralization reaction. Therefore, a large amount of phenol-containing wastewater will be produced during the preparation of the condensate. It is difficult to meet environmental protection requirements if it is discharged directly
[0007] 2. In the production process of the condensate, it is necessary to carry out empirical operation steps such as acid-base neutralization and water washing. These operation steps do not have strict process control, and are random and flexible, which is not conducive to the stable control of product quality. and improve, but also greatly reduce work efficiency
[0008] 3. When hydrochloric acid is used to neutralize the strong basic catalyst at a certain temperature, the condensate may undergo further condensation reaction, thereby changing the reaction performance between the condensate and rosin, and directly affecting the product quality and performance of rosin modified resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 60g of water and add it to a 500ml three-necked bottle, raise the temperature to 55°C, add 55g of p-tert-butylphenol, 160g of p-tert-octylphenol and 0.8g of calcium hydroxide, stir and raise the temperature to 85°C, keep warm until the material is transparent . Lower the temperature to 75°C, add 80g of paraformaldehyde to the three-necked flask in batches, and keep it warm at 75-80°C for 4 hours after the addition, and cool down to 60°C when the viscosity of the condensation liquid is 300-3000mPa·s to prepare mixed alkanes Base phenolic resin condensate.

[0021] Add 490g of rosin into a 1000ml three-necked bottle, heat up and melt. Start stirring, and slowly add the above-mentioned mixed alkylphenolic resin condensate into the molten rosin at 180°C to 200°C. After the addition, keep it at 210°C for 1 hour, slowly raise the temperature to 230°C, add 1g of magnesium oxide, and heat up to 230°C-240°C, add 65g of pentaerythritol in batches, keep it warm for 1 hour, ...

Embodiment 2

[0023] Take 70g of water and add it to a 500ml three-necked flask, raise the temperature until the water temperature reaches 55°C, add 155g of p-tert-butylphenol, 50g of p-nonylphenol and 1g of magnesium hydroxide, stir and raise the temperature to 90°C, and keep warm until the material is transparent. Cool down to 70°C, add 85g of paraformaldehyde into the three-necked flask in batches, and keep it warm at 70-73°C for 4 hours after the addition, and cool down to 60°C when the viscosity of the condensation liquid is 1300-3800mPa·s to prepare mixed alkanes Base phenolic resin condensate.

[0024] Add 500g of rosin into a 1000ml three-necked bottle, heat up and melt, start stirring, and slowly add the above-mentioned mixed alkylphenolic resin condensate into the molten rosin at 180°C-200°C, after adding, keep it warm at 210°C for 1 hour, and slowly raise the temperature to 230°C, add 1.2g of zinc oxide, raise the temperature to 230°C-240°C, add 55g of pentaerythritol and 20g of ...

Embodiment 3

[0026] Take 58g of water and add it to a 500ml three-necked flask, raise the temperature to 70°C, add 130g of p-tert-octylphenol, 50g of p-nonylphenol and 0.7g of calcium hydroxide, stir and raise the temperature to 90°C, and keep warm until the material is transparent. Cool down to 73°C, add 83g of paraformaldehyde into the three-necked flask in batches, and keep it warm at 75-80°C for 4 hours after adding, and cool down to 60°C when the viscosity of the condensation liquid is 1300-4200mPa·s to prepare mixed alkanes Base phenolic resin condensate.

[0027]Add 480g of rosin into a 1000ml three-necked bottle, and heat up to melt it. Start stirring, and slowly add the above-mentioned mixed alkylphenolic resin condensate into the molten rosin at 180°C to 200°C. After the addition, keep the temperature at 210°C for 1 hour, slowly raise the temperature to 230°C, and add 1.2g of magnesium oxide. Raise the temperature to 230°C-240°C, add 63g of pentaerythritol in batches, and keep t...

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Abstract

A kind of manufacture method of mixed alkylphenol-formaldehyde resin condensate, is the mixture of any two or three of p-tert-butylphenol, p-tert-octylphenol, p-nonylphenol three kinds of alkylphenols and Paraformaldehyde is condensed in an aqueous solution of a weakly basic catalyst to prepare a condensate. The resin condensate can also react with rosin to prepare rosin-modified mixed alkylphenol-formaldehyde resin. In the present invention, paraformaldehyde is used to replace 37% formaldehyde aqueous solution and a weak base is used as a catalyst, which saves the two process steps of hydrochloric acid neutralization and water washing, reduces the discharge of phenol-containing wastewater, is beneficial to environmental protection, and improves production efficiency .

Description

Technical field [0001] The invention relates to a method for producing an intermediate of a rosin-modified mixed alkylphenol-formaldehyde resin, in particular to a method for producing a condensate of a mixed alkylphenol-formaldehyde resin. Background technique [0002] With the continuous progress of society, the printing industry, one of the important pillar industries of modern society, has also made great progress, and at the same time, it has put forward higher requirements for the quality and performance of printing inks. The key to the performance of printing inks is the performance of ink binders. To produce high-speed, multi-color, fast-drying high-grade printing inks, it is necessary to have high molecular weight, high solubility synthetic resin binders to provide guarantees. Rosin-modified phenolic resin is one of the resins widely used in printing ink and paint manufacturing industries, especially the important resins for ink binders. Their quality directly deter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/10
Inventor 耿国庆马锦绣冯爱武吕方
Owner 耿国庆
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