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Phenol-formaldehyde resin by colophony modified with alkyl phenol being mixed and its preparation method

A technology for modifying phenolic resin and rosin, which is applied in the field of rosin modified resin, which can solve the problems of insufficient viscosity, poor fat solubility, and short fixation time, and achieve uniform molecular weight distribution, good viscoelasticity, and good oil melting.

Inactive Publication Date: 2003-12-24
山西省应用化学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The product has few functional groups, 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 has poor oil solubility and fat solubility, but the fixing time is short and the gloss is high; rosin prepared with alkylphenols containing relatively large alkyl groups Modified alkylphenol phenolic resin, although oil-soluble and fat-soluble, but the fixation time is long and the gloss is low
[0005] 2. The product has a darker color
Using conventional catalysts to prepare rosin-modified alkylphenol phenolic resin must be esterified 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 widely used in special inks such as white and yellow.
[0006] 3. The viscosity is not high enough
[0010] 1. The color of the resin is darker, and the Gardner color number is greater than or equal to No. 11;
[0011] 2. The solubility of aliphatic hydrocarbons is not large enough, and the n-heptane value is ≤7.5mL / 2g;
[0012] 3. Although the viscosity of the resin is large and the molecular weight is large, the molecular weight distribution range is wide
[0013] The above deficiencies have affected the application of rosin-modified mixed alkylphenolic resins to a certain extent, especially in the application of light-colored inks and coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Weigh 90g of p-tertoctylphenol, 20g of p-nonylphenol, 5g of dodecylphenol and 81g of 10% NaOH solution into a 500mL three-necked flask, and heat until the materials melt. Start stirring, and slowly add 89 g of 37% formaldehyde solution dropwise, and after the dropwise addition, keep the temperature at 70° C. for 4 hours. Neutralize with 15% HCl solution, until the pH value is 6, stop stirring, let it stand, after the material is separated, discard the water layer, and wash the organic layer twice to obtain 166g of condensation mixture of alkylphenol phenolic resin things.

[0040] Add 400g of rosin into a 1000mL three-necked bottle, heat to melt, start stirring, and slowly add the above-mentioned mixed alkylphenol phenolic resin condensate at a temperature of 185°C. After the addition, keep warm at 210°C for 1 hour, add 0.9g zinc oxide-lithium oxide composite catalyst treated with phosphoric acid and dry, slowly add 32g glycerin at 230°C, keep warm for 2 hours, raise th...

Embodiment 2

[0042] Weigh 74g of p-tertoctylphenol, 20g of p-nonylphenol, 10g of dodecylphenol and 90g of 10% NaOH solution into a 500mL three-necked flask, and heat until the materials melt. Start stirring, add 99 g of 37% formaldehyde solution dropwise, and keep the temperature at 68° C. for 4 hours after the dropwise addition. Neutralize with 15% HCl solution until the pH value is 6, stop stirring, let stand, separate the water layer, wash the organic layer twice with water to obtain 172g of condensate of mixed alkylphenol phenolic resin.

[0043] Add 400g of rosin into a 1000mL three-necked bottle, heat to melt, start stirring, and slowly add the above-mentioned mixed alkylphenol phenolic resin condensate at a temperature of 190°C. After the addition, keep it warm at 200°C for 1 hour, add 0.5g of zinc oxide-magnesium oxide composite catalyst treated with oxalic acid and dry, slowly add 34g of glycerin at 220°C, keep it warm for 2 hours, raise the temperature to 230°C, and then add 12g ...

Embodiment 3

[0045] Weigh 76g of p-tertoctylphenol, 5g of p-nonylphenol, 30g of dodecylphenol and 84g of 10% NaOH solution into a 500mL three-necked flask, and heat until the materials melt. Start stirring, add 95 g of 37% formaldehyde solution dropwise, and keep the temperature at 72° C. for 4 hours after the dropwise addition. Neutralize with 15% HCl solution until the pH value is 6, stop stirring, let stand, separate the water layer, wash the organic layer twice with water to obtain 210 g of condensate of mixed alkylphenol phenolic resin.

[0046] Add 400g of rosin into a 1000mL three-necked bottle, heat to melt, start stirring, and slowly add the mixed alkylphenol phenolic resin condensate prepared above at a temperature of 200°C. After adding, keep warm at 210°C for 1 hour, add 1.0g of zinc oxide-lithium oxide composite catalyst, slowly add 32g of glycerin at 220°C, keep warm for 2 hours, heat up to 235°C, add 13g of trimethylolpropane, keep warm for 1 After 1 hour, heat up to 258°C ...

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Abstract

A rosin modified mixed alkylphenol-phenolic resin is prepared from reaction between p-tert-octylphenol, p-nonylphehnol, dodecylphenol and formaldehyde in alkaline condition, modifying by rosin, and esterifying by glycerin and then trihydroxymethyl propane. Its advantages are high soft point, good viscoelasticity, and excellent solubility in fatty hydrocarbon band oil. It can be used for high-speed print color ink.

Description

1. Technical field [0001] The invention relates to a rosin-modified resin, more specifically, the invention relates to a light-colored rosin-modified phenolic resin suitable for printing ink and paint manufacturing industries. The invention also relates to a method for preparing the resin. 2. Background technology [0002] 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 determines the performance of inks, such as printability, drying performance, and film formation. performance and more. [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 Sexual p-tertoctylphenol phenolic resin, etc. These ink binder resins also have the follo...

Claims

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Application Information

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IPC IPC(8): C08G8/34
Inventor 马国章白国宝侯彩英原丽平张振荣
Owner 山西省应用化学研究所
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