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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 excessive emulsification and misting of ink under high shear force

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0028] Add 350g of rosin into a four-necked bottle, heat it to 180°C to melt it, start stirring, raise the temperature to 190°C, and slowly add the above-mentioned mixed long-chain alkylphenol phenolic resin condensation liquid. After adding, keep warm at 210°C for half an hour, add 0.8g of sodium benzenesulfonate, heat up to 220°C, slowly add 35g of glycerol dropwise,...

Embodiment 2

[0031] Weigh 110g of p-tert-octylphenol and 130g of dodecylphenol, add them together with 11.5g of 15% NaOH aqueous solution into a 1000ml four-neck flask, heat to 60°C to melt the materials, start stirring, and slowly add 190g of 37% formaldehyde solution dropwise , after the dropwise addition, keep the temperature at 65°C for 4 hours. After the reaction, use 23.7g of 35.6% concentrated HCl solution to adjust the pH value of the condensed liquid to 7, stop stirring, and let it stand. After the materials are separated, discard Water layer, obtain 320g mixed long-chain alkylphenol novolac resin condensation liquid.

[0032] Add 340g of rosin into a four-necked bottle, heat it to 180°C to melt it, start stirring, raise the temperature to 195°C, and slowly add the above-mentioned mixed long-chain alkylphenol phenolic resin condensation liquid. After the addition, keep warm at 215°C for half an hour, add 1g of toluenesulfonic acid, heat up to 240°C, slowly add 34.5g of pentaerythr...

Embodiment 3

[0035]Weigh 130g of p-tert-octylphenol and 120g of p-nonylphenol, add them together with 13g of 15% NaOH aqueous solution into a 1000ml four-neck flask, heat to 60°C to melt the materials, start stirring, slowly add 200g of 37% formaldehyde solution dropwise, After the dropwise addition, keep the temperature at 70°C for 4 hours. After the reaction, use 24.2g of 35.6% concentrated HCl solution to adjust the pH value of the condensation liquid to 8, stop stirring, and let it stand. After the materials are separated, discard the water. Layer, obtain 310g mixed long-chain alkylphenol phenolic resin condensation liquid.

[0036] Add 305g of rosin into a four-necked bottle, heat it to 180°C to melt it, start stirring, raise the temperature to 190°C, and slowly add the above-mentioned mixed long-chain alkylphenol phenolic resin condensation liquid. After the addition, keep warm at 220°C for half an hour, add 1.2g sodium dodecylbenzenesulfonate, raise the temperature to 230°C, slowly ...

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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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