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Phenol-free resin for offset printing ink and preparation method thereof

A technology of offset printing ink and phenol resin, which is applied in the field of phenol-free resin for offset printing ink and its preparation, can solve problems such as harm and non-compliance with environmental protection development, and achieve the effect of reducing impact

Inactive Publication Date: 2013-02-27
TIANJIN CITY TIANNING RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional ink resin technology has certain hazards to the operator, later ink manufacturing and ink users, and does not meet the requirements of environmental protection development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The preparation method of described offset printing ink phenol-free resin comprises the following steps:

[0035] ①The reactants are preheated and melted

[0036] Add rosin and fatty acid to the reaction kettle according to the mass weight of the above formula. When the heating temperature is 160-170°C, keep it warm for 4-5 hours until it is completely melted. During the heating process, the inert gas is nitrogen on the surface.

[0037] ②Addition reaction

[0038] After the reactants in step ① are evenly stirred, fumaric acid is added in parts by weight according to the above formula, and the temperature is controlled at 170-190° C. for reaction, and kept for 120 minutes.

[0039] ③Addition reaction

[0040] Raise the temperature to 220-230 DEG C of the reactant after step ②, add maleic anhydride according to the mass weight part of the above formula, and keep the temperature for 30 minutes.

[0041] ④Esterification reaction

[0042] Add polyhydric alcohol accordin...

Embodiment 1

[0045] Put 1300kg of rosin and 100% of fatty acid into the reaction kettle in step 1. When the heating temperature is 160--170°C, keep it warm for 4-5 hours to completely melt.

[0046] After step ②, add 200 kg of fumaric acid, i.e. fumaric acid, stir, control the temperature at 170-190° C., and keep the temperature for 120 minutes.

[0047] Step ③Heat up to 220-230°C, add 200 kg of maleic anhydride, and keep warm for 30 minutes.

[0048] According to step ④, add 250 kg of polyol according to the proportion of the formula, keep it warm for 30 minutes, add catalyst lithium hydroxide to raise the temperature, raise the temperature to 260-270°C, and keep it warm for 6-8 hours. Make sure to test once every 1-2 hours, and check the viscosity, acid value, softening point, and mineral oil solubility of the final product phenol-free polymer rosin ester resin until it reaches a viscosity of 22000mpa.s / 25°C and an acid value 170℃, mineral oil solubility>4ml / 25℃2g, qualified packaging. ...

Embodiment 2

[0050] Put 1,400 kilograms of rosin and 150 kilograms of fatty acid into the reaction kettle in step 1. When the heating temperature is 160--170° C., keep warm for 4-5 hours to completely melt.

[0051] After step ②, add 100 kg of fumaric acid, i.e. fumaric acid, stir, control the temperature at 170-190° C., and keep the temperature for 120 minutes.

[0052] Step ③Heat up to 220-230°C, add 100 kg of maleic anhydride, and keep warm for 30 minutes.

[0053] According to step ④, add 200 kg of polyols according to the proportion of the formula, keep warm for 30 minutes, add catalyst lithium hydroxide to raise the temperature, raise the temperature to 260-270°C, and keep warm for 6-8 hours. Make sure to test once every 1-2 hours, and check the viscosity, acid value, softening point, and mineral oil solubility of the final product phenol-free polymer rosin ester resin until it reaches a viscosity of 18000mpa.s / 25°C and an acid value 165°C, mineral oil solubility>4ml / 25°C2g, qualifi...

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Abstract

The invention provides a phenol-free resin for offset printing ink. The resin formula comprises, by weight, 60-80 parts of rosin, 1-10 parts of fumaric acid, 1-10 parts of maleic anhydride, 1-10 parts of aliphatic acid, 10-20 parts of polyol, and 0.1-1 part of a catalyst. The performance indexes of the phenol-free resin for offset printing ink are as follows: the viscosity is 15000-25000 mPa.s / 25DEG C; the release property is larger than or equal to 5 ml / 2g; the acid value is less than or equal to 25 mgKOH / g; and the softening point is 160-175 DEG C. The invention also provides a method for preparing the phenol-free resin for offset printing ink. The effects of the invention are as follows: the phenol-free resin for offset printing ink can be used for offset printing ink; there exists no phenolic substance and formaldehyde during the reaction process, thus minimizing the atmospheric pollution and the harmfulness to the health of an operator and realizing civilized production.

Description

technical field [0001] The invention relates to a resin production method, in particular to a phenol-free resin for offset printing ink and a preparation method. Background technique [0002] Generally, resins for offset printing inks are mainly condensed with phenol, bisphenol A, alkylphenols and formaldehyde, and the condensation products are added to rosin, and then esterified with polyols to form phenolic modified rosin resins. In this process, phenolic substances such as phenol, bisphenol A, and alkylphenols and formaldehyde are introduced. [0003] Phenolic compounds are a kind of protoplasmic poisons, which have poisonous effect on all living individuals. It can coagulate protein, so it has a strong bactericidal effect. Its aqueous solution can easily cause systemic poisoning through the skin; its vapor can be inhaled through the respiratory tract, causing greater damage to the nervous system. Long-term inhalation of concentrated phenol vapor or phenol-contaminated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/12C09F1/04C08G63/52C09D11/10C09D11/104
CPCY02A50/20
Inventor 庞世华冯祖喜
Owner TIANJIN CITY TIANNING RESIN
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