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Rosin-modified phenol resin, manufacturing method thereof, and printing ink

A technology of rosin modification and phenolic resin, applied in the direction of ink, application, coating, etc., which can solve the problems of reducing gloss, ink smog scattering, and deterioration of working environment

Active Publication Date: 2012-01-18
ARAKAWA CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the increase in speed of printing machines in recent years, there is a problem that a large amount of ink fumes are scattered from printing machines, and the working environment during printing is deteriorating.
As a method to improve this problem, there are: a method of making the ink resin highly polar to impart conductivity, a method of making the ink resin high in molecular weight to improve the elasticity of the ink, etc. However, generally, while reducing the amount of ink atomization, there is a risk of reducing gloss. degree of tendency
[0003] As a method of solving the above-mentioned problems, a method of using a petroleum resin composition for printing ink has been proposed, but it is difficult to satisfy various ink performances only with petroleum resin (refer to Patent Document 1)
In addition, as the resin for printing ink, the method of using an alkylphenol with 10 to 20 carbon atoms and a rosin-modified phenol resin with an acid catalyst and a weight average molecular weight of 30,000 to 250,000 is adopted, but this resin cannot satisfy various requirements. Ink performance, thus lack of versatility (refer to Patent Document 2)

Method used

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  • Rosin-modified phenol resin, manufacturing method thereof, and printing ink
  • Rosin-modified phenol resin, manufacturing method thereof, and printing ink

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0035] (Manufacture of alkylphenol-formaldehyde condensate)

[0036] Add 1,000 parts of octylphenol, 317 parts of 92% paraformaldehyde, 564 parts of xylene and 500 parts of water into a reaction vessel with a stirrer, a reflux cooling pipe with a water separator, and a thermometer, and heat up to 50°C under stirring . Next, 89 parts of 45% sodium hydroxide solution was added to the reaction vessel, and the temperature of the reaction system was slowly raised to 90° C. while cooling, and kept for 2 hours, and sulfuric acid was further added dropwise to adjust the pH value to about 6. Thereafter, the aqueous layer portion containing formaldehyde and the like was removed, and the content was cooled after washing with water again to prepare a 70% by weight xylene solution of soluble octylphenol (Octylphenol).

manufacture example 2

[0038] (Manufacture of alkylphenol-formaldehyde condensate)

[0039] Add 800 parts of octylphenol, 200 parts of butylphenol, 340 parts of 92% paraformaldehyde, 573 parts of xylene and 500 parts of water in the reaction vessel with stirrer, the reflux cooling pipe with water trap and thermometer. The temperature was raised to 50°C with stirring. Then, 89 parts of 45% sodium hydroxide solution were added to the reaction vessel, and the temperature of the reaction system was slowly raised to 90° C. while cooling, and kept for 2 hours, and sulfuric acid was further added dropwise to adjust the pH value to about 6. Thereafter, the aqueous layer portion containing formaldehyde and the like was removed, and the content was cooled after washing with water again to prepare a xylene solution having 70% by weight of soluble octyl / butylphenol.

manufacture example A

[0042] In a reaction vessel equipped with a stirrer, a reflux cooling pipe with a water separator, and a thermometer, 1000 parts of Indonesian gum rosin (containing 8% of dihydrokauritic acid as component (a)) was added, and it was placed in a nitrogen atmosphere. While stirring, the temperature was raised to 180°C and melted. Next, 93 parts of pentaerythritol and 3 parts of magnesium hydroxide were added, and it heated up to 280 degreeC with stirring, and it reacted until the acid value became 25 mgKOH / g or less. After further cooling to 230°C, 714 parts (500 parts of solid) of xylene solution containing 70% by weight of soluble octylphenol of Production Example 1 was dropped into the reaction system at a temperature range of 230°C to 260°C over 9 hours. After completion of the dropping, the viscosity of the 33% by weight linseed oil was adjusted to 10 Pa·s, and the content was taken out after reducing the pressure at 0.02 MPa for 10 minutes. The acid value of the rosin-modi...

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Abstract

A rosin-modified phenol resin is obtained by reacting (a) rosins containing 0.4-10% of dihydroagathic acid, (b) a condensation product of phenols and formaldehyde, and (c) a polyol. The rosin-modified phenol resin is suitable for printing ink applications, and the amount of printing ink mist can be reduced without the luster of the printed material being diminished while maintaining various ink capabilities (drying properties, emulsifying properties, etc.).

Description

technical field [0001] The invention relates to a rosin-modified phenolic resin, a manufacturing method thereof and printing ink. Background technique [0002] With the speeding up of printing machines in recent years, there has been a problem that a large amount of ink fumes are scattered from the printing machines, and the work environment during printing has deteriorated. As a method to improve this problem, there are: a method of making the ink resin highly polar to impart conductivity, a method of making the ink resin high in molecular weight to improve the elasticity of the ink, etc. However, generally, while reducing the amount of ink atomization, there is a risk of reducing gloss. degree of tendency. [0003] As a method for solving the above-mentioned problems, a method of using a petroleum resin composition for printing ink has been proposed, but it is difficult to satisfy various ink performances only with petroleum resin (refer to Patent Document 1). In additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/34C09D11/02
CPCC08G8/34C09D11/103C09D161/14C09D11/102
Inventor 川濑滋博多宏一
Owner ARAKAWA CHEM IND LTD
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