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Method for preparing bisphenol A rosin modified phenolic resin

A rosin-modified, phenolic resin technology, used in inks, household appliances, applications, etc., can solve the problems of difficult to control resin viscosity, increased operation difficulty, large water content, etc., and achieve uniform molecular weight distribution, good miscibility, and softening point. high effect

Active Publication Date: 2013-06-26
桂林兴松林化有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcoming of this prior art method is: adopt concentration 37% formaldehyde aqueous solution as raw material in the first step condensation reaction, because the water content in the reaction system is big, be unfavorable for phenolic condensation reaction to carry out, the reaction time is long, needs 10-11 hours; In the production process, the resin viscosity is difficult to control, and material coking often occurs
Sometimes raw rosin must be added in the reaction process to prevent viscosity growth, which not only increases the difficulty of operation, but also affects the internal quality of the resin, resulting in disadvantages in the coating film and ink properties formed by the resin product; and the resin is highly polar and dissolves in oil Poor performance, low tolerance of n-heptane, only 1-2ml / g, viscosity in oil only 3000-3500mPa.s, which cannot meet the actual requirements

Method used

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  • Method for preparing bisphenol A rosin modified phenolic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1), the dimethylbenzene of 100 weight parts, the p-tert-octylphenol of 150 weight parts, the bisphenol A of 60 weight parts, the nonylphenol of 450 weight parts drop into reactor successively, be warming up to 65 ℃, be incubated 5 minutes, Then add 190 parts by weight of formaldehyde with a mass concentration of 92%, start stirring, then add 2 parts by weight of a 10% weight concentration of NaOH aqueous solution and 60 parts by weight of water in turn, heat up to 90 ° C, the heating rate is 1.0 ° C / min, and heat preservation is carried out. The reaction was carried out until the viscosity of the reactant in the reaction kettle was 10,000 mPa.s, cooled to 70°C, and taken out to obtain a condensation solution;

[0021] 2), drop the rosin of 1000 parts by weight into the reactor, be warming up to 180 ℃, add the fumaric acid of 40 parts by weight, be warming up to 200 ℃ and add the condensation solution that step 1) obtains, be incubated for 15 minutes;

[0022] 3), be war...

Embodiment 2

[0024] 1), the dimethylbenzene of 170 weight parts, the p-tert-octylphenol of 170 weight parts, the bisphenol A of 30 weight parts, the nonylphenol of 400 weight parts drop into reactor successively, be warming up to 50 ℃, be incubated 10 minutes, Then add 180 parts by weight of formaldehyde with a mass concentration of 94%, start stirring, then add 8 parts by weight of a 15% weight concentration of NaOH aqueous solution and 80 parts by weight of water in turn, heat up to 95 ° C, the heating rate is 1.0 ° C / min, and heat preservation is carried out. The reaction was carried out until the viscosity of the reactant in the reaction kettle was 19,000 mPa.s, cooled to 65°C, and taken out to obtain a condensation solution;

[0025] 2), drop the rosin of 2000 weight parts into the reactor, be warming up to 190 ℃, add the fumaric acid of 30 weight parts, be warming up to 195 ℃ and add the condensation solution that step 1) obtains, be incubated 30 minutes;

[0026] 3), be warming up t...

Embodiment 3

[0028] 1), the dimethylbenzene of 150 weight parts, the p-tert-octylphenol of 100 weight parts, the bisphenol A of 40 weight parts, the nonylphenol of 420 weight parts drop into reactor successively, be warming up to 75 ℃, be incubated 10 minutes, Then add 200 parts by weight of formaldehyde with a mass concentration of 96%, start stirring, then add 4 parts by weight of a 10% weight concentration of NaOH aqueous solution and 20 parts by weight of water in turn, heat up to 95 ° C, the heating rate is 1.0 ° C / min, and keep warm The reaction was carried out until the viscosity of the reactant in the reaction kettle was 15,000 mPa.s, cooled to 65°C, and taken out to obtain a condensation solution;

[0029] 2), drop the rosin of 1500 weight parts into the reactor, be warming up to 185 ℃, add the fumaric acid of 50 weight parts, be warming up to 205 ℃ and add the condensation solution that step 1) obtains, be incubated 20 minutes;

[0030] 3), be warming up to 225 ℃, add the glycero...

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Abstract

The invention discloses a method for preparing a bisphenol A rosin modified phenolic resin. The method includes reacting 4-tert-octylphenol, 4-nonyl phenol and bisphenol A with formaldehyde under the alkaline condition to obtain a bisphenol A modified solvent phenolic resin condensation compound, and subjecting the condensation compound to rosin modification, fumaric acid addition and esterification of mixed polyalcohol under the catalyst condition to obtain the bisphenol A rosin modified phenolic resin. The mixed polyalcohol comprises glycerol and pentaerythritol. According to the method for preparing the bisphenol A rosin modified phenolic resin, the prepared phenolic resin has the advantages that the softening point is high, adhesiveness is good, miscibility of the solvent is good, color and luster are light, molecular weight is uniformly distributed, and the phenolic resin is suitable for manufacturing of printing inks and applicable to being components of planographic or gravure printing inks.

Description

technical field [0001] The invention relates to a method for producing a rosin-modified phenolic resin, and more particularly, to a method for producing a bisphenol A rosin-modified phenolic resin. Background technique [0002] Rosin-modified phenolic resin is one of the resins widely used in the printing ink and paint manufacturing industries, especially the important ink binder resins. Their quality directly determines the performance of the ink, such as printability, drying performance, film-forming performance and more. [0003] At present, the method of producing rosin-modified phenolic resin in China basically adopts the condensation reaction of p-tert-butylphenol and formaldehyde under alkaline conditions to generate a polymer of methylol-p-tert-butylphenol, methylol-p-tert-butylphenol. The production method of the three-step reaction in which the polymer of butyl phenol and the rosin are added to form the adduct of the polymer of methylol p-tert-butyl phenol and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/34C08G8/32C08G8/28C09D11/10C09D11/103
Inventor 范辂张斌峰
Owner 桂林兴松林化有限责任公司
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