Preparation method for rosin modified long-chain alkyl phenolic resin for thermsetting ink

A long-chain alkylphenol and rosin modification technology, which is applied in inks, applications, household utensils, etc., can solve the problems of ink viscosity reduction, ink flying, ink over-emulsification, etc., and achieve good viscosity, high viscosity, and light color. Effect

Inactive Publication Date: 2015-11-18
SHANXI KENUOAO SYNTHETIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reduction of ink viscosity can easily lead to exc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Weigh 90g of p-tertylphenol and 160g of p-nonylphenol, add 10g of 15% NaOH aqueous solution into a 1000ml four-necked flask, heat to 60°C to melt the material, turn on the stirring, slowly add 200g of 37% formaldehyde solution dropwise, After the addition is complete, keep the temperature at 61°C for 4 hours. After the reaction is over, adjust the pH value of the condensation solution to 6.5 with 24 g of 35.6% concentrated HCl solution, stop stirring, and let it stand. After the materials are separated, discard the water layer 326g of mixed long-chain alkylphenol phenolic resin condensation liquid was obtained.

[0028] Add 350 g of rosin to a four-necked flask, heat it to 180°C to melt, turn on stirring, heat up to 190°C, and slowly add the above-mentioned mixed long-chain alkylphenol phenolic resin condensation solution. After the addition, keep it at 210℃ for half an hour, add 0.8g sodium benzenesulfonate, heat up to 220℃, slowly add 35g glycerin, keep...

Example Embodiment

[0030] Example 2

[0031] Weigh 110g of p-tertylphenol and 130g of dodecylphenol, add 11.5g of 15% NaOH aqueous solution to a 1000ml four-necked flask, heat to 60℃ to melt the material, turn on the stirring, slowly add 190g of 37% formaldehyde solution dropwise After the dripping is completed, keep the temperature at 65°C for 4 hours. After the reaction, adjust the pH of the condensation solution to 7 with 23.7g of 35.6% concentrated HCl solution, stop stirring, and let it stand. After the materials are separated, discard In the water layer, 320 g of a mixed long-chain alkylphenol phenolic resin condensation solution is obtained.

[0032] Add 340 g of rosin to a four-necked flask, heat it to 180°C to melt, turn on the stirring, heat up to 195°C, and slowly add the above-mentioned mixed long-chain alkylphenol phenolic resin condensation solution. After the addition, keep it at 215℃ for half an hour, add 1g toluene sulfonic acid, heat up to 240℃, slowly drip 34.5g pentaerythritol, k...

Example Embodiment

[0034] Example 3

[0035] Weigh 130g of p-tertylphenol and 120g of p-nonylphenol, add 13g of 15% NaOH aqueous solution into a 1000ml four-necked flask, heat to 60°C to melt the material, turn on the stirring, and slowly add 200g of 37% formaldehyde solution dropwise. After the dripping is completed, keep the temperature at 70°C for 4 hours. After the reaction is over, use 24.2g of 35.6% concentrated HCl solution to adjust the pH of the condensate to 8, stop stirring, and let stand. After the materials are separated, discard the water Layer, 310 g mixed long-chain alkyl phenol phenolic resin condensation liquid was obtained.

[0036] Add 305 g of rosin to a four-necked flask, heat it to 180°C to melt, turn on the stirring, heat up to 190°C, and slowly add the above-mentioned mixed long-chain alkylphenol phenolic resin condensation solution. After the addition, keep it at 220°C for half an hour, add 1.2g sodium dodecylbenzene sulfonate, heat to 230°C, slowly add 32.5g trimethylolpro...

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Abstract

The present invention discloses a preparation method for rosin modified long-chain alkyl phenolic resin for thermsetting ink. The method comprises: obtaining a mixed alkyl phenol phenolic resin condensation liquid by virtue of a condensation reaction between p-tert-octyl phenol and a mixture of p-nonyl phenol or dodecylphenol under a basic condition; adding the condensation liquid into molten rosin to perform a Diels-Alder addition reaction; under the action of benzenesulfonic acid catalysts, adding polyol into an addition reaction product to perform an esterification reaction; and adding dicarboxylic acid to continuously react, thereby obtaining the rosin modified long-chain alkyl phenolic resin for thermsetting ink. According to the preparation method, a prepared thermosetting resin product has viscosity of 16000-19000 mpa.s, a softening point of 140-152 DEG C, a heptane value of 22-26 ml/2 g, an acid value lower than or equal to 25 mg KOH/g, a color number of 6-9, and molecular weight dispersity distribution of 8.48-9.89, is applicable to high-grade thermosetting ink, can significantly improve the rotary printing efficiency in a high-speed rotary offset printing process, and is free of phenomena of emulsifying and ink-flying.

Description

technical field [0001] The invention relates to a method for preparing a resin for thermosetting ink, in particular to a method for preparing a light-color rosin-modified alkylphenol-formaldehyde resin polymer material suitable for high-grade high-speed rotary offset printing ink. Background technique [0002] Heat-set rotary offset printing ink is a kind of rotary offset printing ink, which is mainly used for high-end printed matter on coated paper, such as high-end periodicals and magazines, commercial color newspapers, etc. CN1010717482, CN101225283, CN101555309, etc. all relate to heat-setting rotary offset printing inks, and its biggest feature is high-speed printing. The printing ink is quickly dried by the heating and drying device on the heat-setting rotary printing machine to achieve the purpose of high-speed printing. This requires heatset web offset inks to be less viscous than sheetfed inks. However, the reduction of ink viscosity can easily lead to excessive em...

Claims

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Application Information

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IPC IPC(8): C08G8/34C08G8/12C09D11/103
Inventor 耿向东张振荣赵振宇李学秦文艳任效东马国章
Owner SHANXI KENUOAO SYNTHETIC MATERIALS CO LTD
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