Preparing method of ethanol-soluble resin for printing ink and application thereof

A technology of resin for ink and alcohol-soluble type, which is applied in the field of preparation of resin for alcohol-soluble ink, can solve the problems of poor applicability of non-polar substrates, unsatisfactory effect, increased raw material cost, etc. Overcome the effects of poor substrate adaptability, excellent adhesion fastness and low cost

Inactive Publication Date: 2009-09-09
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing resins for alcohol-soluble inks have problems such as strong selectivity to pigments, poor applicability to polar and non-polar substrates, and poor temperature resistance. Especially for non-polar substrates, it is often necessary to add Adhesion promoters not only greatly increase the cost of raw materials, but also often achieve unsatisfactory results

Method used

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  • Preparing method of ethanol-soluble resin for printing ink and application thereof
  • Preparing method of ethanol-soluble resin for printing ink and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment one provides a preparation method and application of a resin for alcohol-soluble ink, the preparation method of the resin is as follows:

[0019] Preparation of polyester diol:

[0020] a. Add 15-25 parts by mass of aliphatic dibasic acid, 15-25 parts by mass of aromatic dibasic acid, 25-35 parts by mass of crystalline dibasic alcohol and 20-30 parts by mass of amorphous dibasic alcohol In the polyester synthesis kettle, heat up to 200-240°C, and react for 5-6 hours to complete the esterification reaction; in practice, after the esterification reaction is completed, it is also possible to confirm whether the esterification reaction is qualified by measuring the acid value of the reactant. If the acid value of the reactant is less than or equal to 25mgKOH / g, it can be confirmed that the esterification reaction is qualified;

[0021] b. First pump down the vacuum to -0.02Mpa~-0.04Mpa, pay attention to observe the water outlet, keep the water output stable...

Embodiment 2

[0032] The present embodiment two provides a kind of preparation method of resin for alcohol-soluble ink, is used for manufacturing the resin that ink is used, and this method is specifically carried out according to the following steps:

[0033] (1) Preparation of polyester diol:

[0034] Get each raw material according to the following formula:

[0035] Raw material ratio%

[0036]Adipic acid 16

[0037] Isophthalic acid 21

[0038] Neopentyl glycol 29

[0039] Diethylene glycol 34

[0040] a. Add 16Kg of adipic acid, 21Kg of isophthalic acid, 29Kg of neopentyl glycol and 34Kg of diethylene glycol into the polyester synthesis kettle, heat up to 200-240°C, react for 5.5 hours, and wait for ester After the chemical reaction is completed, the measured acid value=18mgKOH / g;

[0041] b. Then perform low vacuum pumping, the vacuum degree of low vacuum pumping is -0.035Mpa, pay attention to observe the water outlet situation, keep the water output stable at 5kg / hour, after 1....

Embodiment 3

[0060] The present embodiment three provides a kind of preparation method of resin for alcohol-soluble ink, is used for manufacturing the resin that ink is used, and this method is specifically carried out according to the following steps:

[0061] (1) Preparation of polyester diol:

[0062] Get each raw material according to the following formula:

[0063] Raw material ratio%

[0064] Sebacic acid 18

[0065] Phthalic acid 20

[0066] 1,4 Butanediol 32

[0067] Propylene glycol 30

[0068] a. Add 18Kg of sebacic acid, 20Kg of phthalic acid, 32Kg of 1,4-butanediol and 30Kg of propylene glycol into the polyester synthesis kettle, heat up to 200-240°C, react for 6 hours, and wait for the esterification reaction to be completed. Measured acid value = 22mgKOH / g;

[0069] b. Preliminary low vacuum pumping, the vacuum degree of low vacuum pumping is -0.03Mpa, pay attention to observe the water outlet situation, keep the water output stable at 10kg / hour, after the low vacuum pu...

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Abstract

The invention discloses a preparing method of ethanol-soluble resin for printing ink and the application thereof. In the method, polyester diol is prepared; aliphatic dibasic acids, aromatic acid, crystal-forming diol and non-crystal diol are added in a polyester synthesis reactor for the esterification reaction under the condition that the temperature is increased. After the esterification reaction, the low vacuum pumping is carried out, and then the high vacuum pumping is carried out. After the high vacuum pumping is stopped, the long vacuum pumping is carried out. Polycondensate obtained after the long vacuum pumping is used as polyester diol; prepolymer is prepared: the prepared polyester diol, polyether glycol and vulcabond are mixed and reacted, and obtained the reaction products are used as the prepolymer; link expansion and synthesis: organic solvent with low boiling point is added into the obtained prepolymer, stirred uniformly and gradually added into polyamine link expansion agent and ethyl alcohol to form mixed solution. The mixed solution reacts under certain temperature. After the temperature is lowered, the vacuum pumping is carried out. The organic solvent with low boiling point is removed. The ethanol-soluble resin for printing ink is obtained. The resin prepared by the method is used for printing ink and has good performance.

Description

technical field [0001] The invention relates to chemical raw materials, in particular to a preparation method and application of a resin for alcohol-soluble ink. Background technique [0002] The solvents used in the plastic gravure printing inks used at this stage are mixed organic solvents such as benzene and ketones. Disadvantages of cleanliness, especially the benzene solvents, which seriously damage the white blood cells of the human body. Long-term exposure can also accumulate latently in the liver of the human body, leading to liver diseases (there are a large number of related reports in this area in China), and they are discharged into the atmosphere. Will destroy the protective layer of the atmosphere - the ozone layer. After these toxic and harmful organic solvents are volatilized during use, they are directly discharged into the atmosphere without any treatment, thus causing serious pollution and damage to the environment. [0003] In view of the shortcomings o...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/32C08G18/42C08G18/48C08G18/10C08G18/72C08G63/181C08G63/16C08G63/183C09D11/10C09D11/102
Inventor 赫长生沈峰邓煜东
Owner BEIJING COMENS NEW MATERIALS
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