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Alcohol-soluble polyamide resin for plastic printing ink and preparation method thereof

A technology of alcohol-soluble polyamide and resin, which is applied in the field of alcohol-soluble polyamide resin for plastic printing ink and its preparation, can solve the problems of weak adhesion, poor weather resistance and low temperature stability, poor transparency, etc., and achieve frost resistance The effect of excellent, excellent adhesion, excellent alcohol solubility and anti-gel properties

Inactive Publication Date: 2018-02-02
安庆巨元高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to overcome the deficiencies in the prior art, provide a kind of alcohol-soluble polyamide resin for plastic printing ink and its preparation method, solve the darker color and poor transparency of the existing alcohol-soluble polyamide resin for plastic printing ink , low gloss, weak adhesion, poor weather resistance and low temperature stability

Method used

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  • Alcohol-soluble polyamide resin for plastic printing ink and preparation method thereof
  • Alcohol-soluble polyamide resin for plastic printing ink and preparation method thereof
  • Alcohol-soluble polyamide resin for plastic printing ink and preparation method thereof

Examples

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Embodiment 1

[0019] Example 1 discloses an alcohol-soluble polyamide resin for plastic printing ink, its raw material components and parts by weight are: 30 parts of dimer acid, 4 parts of sebacic acid, 30 parts of ethylenediamine, dodecyl 3 parts of mercaptan, 3 parts of acetic acid, 2 parts of glycerin, 1 part of isophthalic acid, 2 parts of bisphenolic acid and 4 parts of ethanolamine.

[0020] Wherein, the dimer acid is refined dimer acid, wherein the dimer weight content is 91%, and the monoacid, trimer and multimer are 9%.

[0021] The preparation method of plastic printing ink alcohol-soluble polyamide resin in the present embodiment is as follows:

[0022] Step 1, the preparation of polyamide resin

[0023] Add dimer acid and sebacic acid into the reaction kettle, feed nitrogen, adjust the pressure to 1Mpa, heat at 120°C for 5min, then add ethylenediamine, dodecyl mercaptan, acetic acid and glycerol in sequence, and raise the temperature to 200°C, turn on the agitator, adjust the...

Embodiment 2

[0027] Embodiment 2 discloses an alcohol-soluble polyamide resin for plastic printing ink, its raw material components and parts by weight are: 50 parts of dimer acid, 6 parts of sebacic acid, 50 parts of hexamethylenediamine and p-phenylenediamine , 5 parts of α-methylstyrene linear dimer, 4 parts of acetic acid, 3 parts of glycerin, 2 parts of isophthalic acid, 3 parts of bisphenolic acid and 6 parts of ethanolamine.

[0028] Wherein, the dimer acid is refined dimer acid, the weight ratio of its dimer is 95%, and the balance of monoacid, trimer and multimer is 5%.

[0029] The preparation method of plastic printing ink alcohol-soluble polyamide resin in the present embodiment is as follows:

[0030] Step 1, the preparation of polyamide resin

[0031] Add dimer acid and sebacic acid into the reaction kettle, feed nitrogen, adjust the pressure to 2Mpa, heat at 140°C for 5min, then add hexamethylenediamine, p-phenylenediamine, α-methylstyrene linear dimer solid, acetic acid a...

Embodiment 3

[0035] Embodiment 3 discloses an alcohol-soluble polyamide resin for plastic printing ink, its raw material components and parts by weight are: 40 parts of dimer acid, 5 parts of sebacic acid, propylenediamine, hexamethylenediamine and p-phenylene 40 parts of diamine, 4 parts of α-methylstyrene linear dimer, 3.5 parts of acetic acid, 3 parts of glycerin, 1.5 parts of isophthalic acid, 2 parts of bisphenolic acid and 5 parts of ethanolamine.

[0036] Wherein, the dimer acid is refined dimer acid, and its dimer weight ratio is 90%, and the monoacid, trimer and multimer are 10%.

[0037] The preparation method of plastic printing ink alcohol-soluble polyamide resin in the present embodiment is as follows:

[0038] Step 1, the preparation of polyamide resin

[0039] Add dimer acid and sebacic acid into the reaction kettle, feed nitrogen, adjust the pressure to 1~2Mpa, heat at 120~140°C for 5min, then add propylenediamine, hexamethylenediamine, p-phenylenediamine, α - Methylstyre...

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Abstract

The invention discloses alcohol-soluble polyamide resin for plastic printing ink and a preparation method thereof. The preparation method comprises: adding dimer acid and sebacic acid into a reactionkettle, introducing nitrogen gas, regulating a pressure, heating for 5min, then sequentially adding diamine, a molecular weight regulator, acetic acid and glycerin, warming, and carrying out pressure-maintaining stirring for 3 to 4h so as to obtain polyamide resin; then adding isophthalic acid, diphenolic acid and ethanol amine, regulating the pressure and temperature, stirring for 1 to 2h, then carrying out decompression, discharging water vapor, when the pressure is reduced to 1atm, stopping reaction, and cooling to obtain the alcohol-soluble polyamide resin. According to the alcohol-solublepolyamide resin for the plastic printing ink, which is obtained by adopting the preparation method disclosed by the invention, an acid value is smaller than 6KOHmg / g, an amine value is smaller than 6KOHmg / g, a softening point is 110 to 120 DEG C, and freezing resistance is qualified; the alcohol-soluble polyamide resin has excellent adhesive strength, gelling resistance, weather resistance and low-temperature stability.

Description

technical field [0001] The invention relates to the field of preparation of polyamide resins, in particular to an alcohol-soluble polyamide resin for plastic printing ink and a preparation method thereof. Background technique [0002] With the development of printing, plastic packaging and decoration culture, high-end special color plastic printing inks have developed rapidly. Polyamide resins are resins used as binders for such plastic printing inks. Polyamide resins for inks are usually prepared by condensation of dimerized fatty acids and diamines. They are mainly used in letterpress printing inks, and are also indispensable ink binders for printing packaging materials such as cellophane, polyethylene, and polypropylene films. Since alcohol-soluble polyamide resin is the main raw material for preparing various printing inks, the product is completely soluble in ethanol, isopropanol, butanol and their mixed solvents, and xylene is not used as a solvent, which not only pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/48C08G69/26C09D11/102
CPCC08G69/265C08G69/48C09D11/102
Inventor 王文俊
Owner 安庆巨元高分子材料科技有限公司
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