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Preparation method of mixed phenolic rosin modified phenolic resin

A technology of rosin modification and phenolic resin, which is applied in the field of preparation of rosin phenolic resin. It can solve the problems of insufficient viscosity, short fixation time, and small viscosity value, and achieve uniform molecular weight distribution, high softening point, and prevent splashing.

Active Publication Date: 2012-07-04
桂林兴松林化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. There are few functional groups in the product, and the oil solubility, aliphatic hydrocarbon solubility and viscoelasticity cannot be balanced: the rosin-modified alkylphenol phenolic resin prepared with alkylphenols containing relatively small alkyl groups, oil-soluble, fat The solubility is poor, but the fixation time is short and the gloss is high; the rosin-modified alkylphenol phenolic resin prepared by alkylphenol with relatively large alkyl group has good oil solubility and fat solubility, but the fixation time is long and the gloss is low
[0005] 2. The color of the product is darker: the use of conventional catalysts to prepare rosin-modified alkylphenol phenolic resin must be cured at a higher temperature, and the product is prone to high-temperature oxidation and discoloration, resulting in a darker color of the product, which cannot be applied to white, yellow, etc. In special ink
[0006] 3. The viscosity is not high enough: the preparation of rosin-modified alkylphenol-formaldehyde resin with a single alkylphenol, because the reaction is limited by multiple indicators, the viscosity can only be controlled at about 5000mPa.s, and the viscosity value is too small
[0007] Due to the above reasons, the rosin-modified alkylphenol phenolic resin prepared by a single alkylphenol is difficult to achieve the best in terms of drying performance, printability, film-forming performance, brightness, etc., which affects the printing effect and speed of the ink. Can not meet the growing requirements of the printing industry

Method used

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  • Preparation method of mixed phenolic rosin modified phenolic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1), put 90 parts by weight of xylene into the reaction kettle, start to heat up, add 200 parts by weight of p-tert-octylphenol, 400 parts by weight of p-tert-butylphenol, and nonylphenol of 30 parts by weight, and keep the temperature in the kettle Stir at 55°C for 10 minutes, then add 180 parts by weight of formaldehyde with a mass concentration of 92%, then add 4 parts by weight of lye and 80 parts by weight of water in sequence, raise the temperature to 95°C, and the heating rate is 1.0°C / min. Insulate and react until the viscosity of the reactant in the reactor is 18,000 mPa.s, cool to 70°C, take it out, and obtain the condensation liquid;

[0024] 2), the rosin of 2000 weight parts is dropped into reactor, is heated up to 175 ℃, successively adds the glycerol of 35 weight parts, the pentaerythritol of 180 weight parts and the mass concentration is 0.3 weight part of sulfuric acid solution of 10%, continues to heat up to 265 ℃, heat preservation reaction, until the ...

Embodiment 2

[0026] 1), put 150 parts by weight of xylene into the reaction kettle, start to heat up, add 180 parts by weight of p-tert-octylphenol, 300 parts by weight of p-tert-butylphenol, and nonylphenol of 20 parts by weight, and keep the temperature in the kettle Stir at 60°C for 5 minutes, then add 200 parts by weight of formaldehyde with a mass concentration of 96%, then add 2 parts by weight of lye and 100 parts by weight of water in sequence, raise the temperature to 90°C, and the heating rate is 1.0°C / min. Insulate and react until the viscosity of the reactant in the reactor is 16,000 mPa.s, cool to 70°C, take it out, and obtain the condensation liquid;

[0027] 2), the rosin of 1800 weight parts is dropped into reactor, is heated up to 180 ℃, successively adds the glycerol of 25 weight parts, the pentaerythritol of 140 weight parts and the mass concentration is 0.1 weight part of sulfuric acid solution of 15%, continues to heat up to 270 ℃, heat preservation reaction, until the...

Embodiment 3

[0029] 1), put 120 parts by weight of xylene into the reaction kettle, start to heat up, add 190 parts by weight of p-tert-octylphenol, 500 parts by weight of p-tert-butylphenol, and 50 parts by weight of nonylphenol, keep the kettle Stir at 60°C for 10 minutes, then add 200 parts by weight of formaldehyde with a mass concentration of 94%, then add 8 parts by weight of lye and 20 parts by weight of water in sequence, raise the temperature to 95°C, and the heating rate is 1.0°C / min. Insulate and react until the viscosity of the reactant in the reactor is 19,000 mPa.s, cool to 65°C, take it out, and obtain the condensation liquid;

[0030] 2), the rosin of 1500 weight parts is dropped into reactor, is heated up to 185 ℃, adds successively the glycerol of 30 weight parts, the pentaerythritol of 190 weight parts and the mass concentration is 0.2 weight part of sulfuric acid solution of 10%, continues to heat up to 275 ℃, heat preservation reaction, until the acid value of the reac...

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Abstract

The invention discloses a preparation method of mixed phenolic rosin modified phenolic resin. Under the alkaline conditions, p-tert-octyl phenol, p-nonylphenol and p-tert-butylphenol react with formaldehyde to obtain a mixed phenolic solvent type phenolic resin condensation product, and in the presence of a catalyst, the condensation product undergoes rosin modification and mixed polyalcohol esterification to form the phenolic resin. The mixed polyalcohol comprises glycerol and pentaerythritol. The prepared phenolic resin is high in softening point and good in viscosity, the miscibility of a solvent is good, the color is light, the molecular weight distribution is uniform, and the phenolic resin is suitable for manufacture of printing ink and is suitable for components of ink for offset printing or intaglio printing.

Description

technical field [0001] The invention relates to a preparation method of rosin phenolic resin, more specifically, relates to a preparation method of mixed phenol rosin modified phenolic resin. Background technique [0002] Rosin modified phenolic resin is mainly used in the manufacture of inks and coatings. It is used in conjunction with vegetable oil, mineral oil solvents and other auxiliary materials to make ink binders. It is one of the resins widely used in printing ink and coating manufacturing industries, especially important The quality of ink binder resins directly determines the performance of the ink, such as printability, drying performance, film-forming performance and so on. [0003] For a long time, ink binder resins are mainly rosin-modified single-alkyl phenolic resins, such as rosin-modified phenol-formaldehyde resins, rosin-modified bisphenol-A phenolic resins, rosin-modified p-tert-butylphenol-formaldehyde resins, rosin-modified Response to a special octyl...

Claims

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Application Information

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IPC IPC(8): C08G8/34
Inventor 范辂张斌峰
Owner 桂林兴松林化有限责任公司
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