阅读说明：本技术 一种喷墨溶剂介质及其制备方法 (Ink-jet solvent medium and preparation method thereof ) 是由 徐磊 何显祥 梁文轩 于 2021-01-22 设计创作，主要内容包括：本发明公开一种喷墨溶剂介质及其制备方法,该溶剂介质由以下重量份数的原料制成：溶剂环保型椰油酸酯35-45％、流平剂5-10％、保湿剂1-5％、润滑剂10-15％、表面活性剂5-10％和去离子型稀释剂25-35％,本发明制得的喷墨溶剂介质与有机醇化合物及水能充分相溶,采用了丙三醇、乙二醇、聚乙二醇等作为溶剂成分,赋予本发明良好的抗冻性、润滑性、保湿性和流动性,在生产过程中不会堵塞喷头,有效保证产品的质量稳定。(The invention discloses an ink-jet solvent medium and a preparation method thereof, wherein the solvent medium is prepared from the following raw materials in parts by weight: 35-45% of solvent environment-friendly coconut oleate, 5-10% of flatting agent, 1-5% of humectant, 10-15% of lubricant, 5-10% of surfactant and 25-35% of deionized diluent.)

1. The inkjet solvent medium is characterized by being prepared from the following raw materials in parts by weight: 35-45% of solvent environment-friendly cocoate, 5-10% of flatting agent, 1-5% of humectant, 10-15% of lubricant, 5-10% of surfactant and 25-35% of deionized diluent.

2. The inkjet solvent medium of claim 1, wherein the leveling agent is a polyacrylate-based leveling agent or a silicon-containing acrylate-based leveling agent.

3. The inkjet solvent medium of claim 1, wherein the solvent environmentally friendly cocoate is glycerol polyvinyl ether cocoate.

4. The inkjet solvent medium of claim 1, wherein the humectant is an alcoholic humectant having a viscosity of 10 to 100 mpa.s.

5. The inkjet solvent medium of claim 1, wherein the lubricant is at least one of a polyol, ethylene glycol, propylene glycol, and polypropylene glycol.

6. The inkjet solvent medium of claim 1, wherein the surfactant molecule is at least one of polyethylene glycol, sodium dodecyl sulfate, and polyoxyethylene octylphenol ether.

7. The inkjet solvent medium of claim 1, wherein the deionized diluent is any one of dipropylene glycol diacrylate, tripropylene glycol diacrylate, and hydrolyzed polyacrylonitrile sodium salt.

8. A process for preparing an inkjet solvent medium according to any one of claims 1 to 7, characterized by the steps of:

(1) preparing an ink-jet solvent medium: adding the solvent environment-friendly cocoate, the flatting agent, the humectant, the lubricant, the surfactant and the deionized diluent in the weight fractions into a constant-temperature reaction kettle for 50-70 minutes to obtain an ink-jet solvent medium, wherein the temperature in the constant-temperature reaction kettle is 65-75 ℃;

(2) closing the reaction kettle: cooling the constant-temperature reaction kettle in the step (1), and adjusting the pressure in the constant-temperature reaction kettle to be normal pressure;

(3) filtering the inkjet solvent medium: and (3) filtering the ink-jet solvent medium prepared in the constant-temperature reaction kettle in the step (2) through a filter element with the filtering precision of 500nm, and collecting filtrate to obtain an ink-jet solvent medium finished product.

9. The method for preparing an inkjet solvent medium according to claim 8, wherein the rotation speed of the thermostatic reaction vessel in the step (1) is 10 to 15 rpm, the pressure in the thermostatic reaction vessel is a negative pressure and 4kg.f/cm²In (1)The method is as follows.

10. The method for preparing inkjet solvent medium according to claim 8, wherein the constant temperature reaction kettle is cooled to 10-35 ℃ in the step (2).

Technical Field

The invention relates to a solvent medium, in particular to an ink-jet solvent medium and a preparation method thereof.

Background

The ink-jet solvent medium is an ink medium required by an ink-jet printer, the performance requirement of the ink-jet solvent medium is fully compatible with organic alcohol compounds and water, meanwhile, pH value does not corrode a metal spray head, the influence of surface tension, static resistance and the like on the ink-jet solvent medium does not block the spray head in the production process, and in order to ensure the stable quality of products, the ink-jet solvent medium with good moisture retention, lubricity, viscosity, frost resistance and fluidity needs to be designed.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides an ink-jet solvent medium and a preparation method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an ink-jet solvent medium is prepared from the following raw materials in parts by weight: 35-45% of solvent environment-friendly cocoate, 5-10% of flatting agent, 1-5% of humectant, 10-15% of lubricant, 5-10% of surfactant and 25-35% of deionized diluent.

Preferably, the leveling agent is a polyacrylate type leveling agent or a silicon-containing acrylate type leveling agent.

Preferably, the solvent-friendly coconut oil ester is glycerol polyvinyl ether cocoate.

Preferably, the humectant is an alcohol humectant having a viscosity of 10 to 100 mpa.s.

Preferably, the lubricant is at least one of a polyol, ethylene glycol, propylene glycol, and polypropylene glycol.

Preferably, the surfactant molecule is at least one of polyethylene glycol, sodium dodecyl sulfate and polyoxyethylene octylphenol ether.

Preferably, the deionized diluent is any one of dipropylene glycol diacrylate, tripropylene glycol diacrylate and hydrolyzed polyacrylonitrile sodium salt.

A method for preparing the ink-jet solvent medium comprises the following steps:

(1) preparing an ink-jet solvent medium: adding the solvent environment-friendly cocoate 1, the flatting agent, the humectant, the lubricant, the surfactant and the deionized diluent into a constant-temperature reaction kettle according to the weight fraction for 50-70 minutes to obtain an ink-jet solvent medium, wherein the temperature in the constant-temperature reaction kettle is 65-75 ℃;

(2) closing the reaction kettle: cooling the constant-temperature reaction kettle in the step (1), and adjusting the pressure in the constant-temperature reaction kettle to be normal pressure;

(3) filtering the inkjet solvent medium: and (3) filtering the ink-jet solvent medium prepared in the constant-temperature reaction kettle in the step (2) through a filter element with the filtering precision of 500nm, and collecting filtrate to obtain an ink-jet solvent medium finished product.

Preferably, in the step (1), the rotating speed of the constant-temperature reaction kettle is 10-15 r/min, the relative humidity in the constant-temperature reaction kettle is less than 85%, and the pressure in the constant-temperature reaction kettle is negative pressure and 4kg.f/cm²One kind of (1).

Preferably, the constant temperature reaction kettle is cooled to 10-35 ℃ in the step (2).

The invention has the beneficial effects that: the ink-jet solvent medium prepared by the invention is fully compatible with organic alcohol compounds and water, and adopts glycerol, glycol, polyethylene glycol and the like as solvent components, so that the ink-jet solvent medium has good freezing resistance, lubricity, moisture retention and fluidity, does not block a spray head in the production process, and effectively ensures the stable quality of products.

Detailed Description

In the present example, the temperature and pressure are not particularly emphasized, and both are normal temperature and normal pressure.

An ink-jet solvent medium is prepared from the following raw materials in parts by weight: 35-45% of solvent environment-friendly cocoate, 5-10% of flatting agent, 1-5% of humectant, 10-15% of lubricant, 5-10% of surfactant and 25-35% of deionized diluent.

Preferably, the leveling agent is a polyacrylate type leveling agent or a silicon-containing acrylate type leveling agent.

Preferably, the solvent-friendly coconut oil ester is glycerol polyvinyl ether cocoate.

Preferably, the humectant is an alcohol humectant with the viscosity of 10-100mPa.s, and the alcohol humectant is a mixture of glycerol and polyethylene glycol in any proportion.

Preferably, the lubricant is at least one of a polyol, ethylene glycol, propylene glycol, and polypropylene glycol.

Preferably, the surfactant molecule is at least one of polyethylene glycol, sodium dodecyl sulfate and polyoxyethylene octylphenol ether.

Preferably, the deionized diluent is any one of dipropylene glycol diacrylate, tripropylene glycol diacrylate and hydrolyzed polyacrylonitrile sodium salt.

Wherein, the glycerol, the glycol and the polyethylene glycol all obviously improve the effects of freezing resistance, lubricity, moisture retention and fluidity.

A method for preparing the ink-jet solvent medium comprises the following steps:

(1) preparing an ink-jet solvent medium: adding the solvent environment-friendly cocoate 1, the flatting agent, the humectant, the lubricant, the surfactant and the deionized diluent into a constant-temperature reaction kettle according to the weight fraction for 50-70 minutes to obtain an ink-jet solvent medium, wherein the temperature in the constant-temperature reaction kettle is 65-75 ℃;

(2) closing the reaction kettle: cooling the constant-temperature reaction kettle in the step (1), and adjusting the pressure in the constant-temperature reaction kettle to be normal pressure;

(3) filtering the inkjet solvent medium: and (3) filtering the ink-jet solvent medium prepared in the constant-temperature reaction kettle in the step (2) through a filter element with the filtering precision of 500nm, and collecting filtrate to obtain an ink-jet solvent medium finished product.

Preferably, in the step (1), the rotating speed of the constant-temperature reaction kettle is 10-15 r/min, the relative humidity in the constant-temperature reaction kettle is less than 85%, and the pressure in the constant-temperature reaction kettle is negative pressure and 4kg.f/cm²One kind of (1).

Preferably, the constant temperature reaction kettle is cooled to 10-35 ℃ in the step (2).

In the present invention, the portions where the temperature and pressure are not particularly emphasized are both normal temperature and normal pressure.

For the novel chromophoric solvent digital ink of the above formula, the inventors designed and tested a number of examples and produced according to the above method:

example 1: an ink-jet solvent medium is prepared from the following raw materials in parts by weight: 35% of solvent environment-friendly cocoate, 5% of leveling agent, 1% of humectant, 10% of lubricant, 5% of surfactant and 25% of deionized diluent.

Preferably, the leveling agent is a polyacrylate leveling agent; the humectant is an alcohol humectant with the viscosity of less than 100mPa.s, and the alcohol humectant is a mixture of glycerol and polyethylene glycol in a ratio of 1: 1; the lubricant is a mixture of polyhydric alcohol, ethylene glycol, propylene glycol and polypropylene glycol in a ratio of 1:1:1: 1; the surfactant molecules are a mixture of polyethylene glycol, sodium dodecyl sulfate and octyl phenol polyoxyethylene ether in a ratio of 1:1: 1; the deionized diluent is dipropylene glycol diacrylate.

In the step (1), the constant temperature reaction temperature in the constant temperature reaction kettle is 70 ℃, the operation time is 60 minutes, the rotating speed is 12 revolutions per minute, and the pressure in the constant temperature reaction kettle is 4kg.f/cm²。

Example 2: an ink-jet solvent medium is prepared from the following raw materials in parts by weight: 45% of solvent environment-friendly cocoate, 10% of leveling agent, 5% of humectant, 15% of lubricant, 10% of surfactant and 35% of deionized diluent.

Preferably, the leveling agent is a silicon-containing acrylate leveling agent; the humectant is an alcohol humectant with the viscosity of less than 100mPa.s, and the alcohol humectant is a mixture of glycerol and polyethylene glycol in a ratio of 1: 1; the lubricant is a mixture of polyhydric alcohol, ethylene glycol, propylene glycol and polypropylene glycol in a ratio of 1:1:1: 1; the surfactant molecules are a mixture of polyethylene glycol, sodium dodecyl sulfate and octyl phenol polyoxyethylene ether in a ratio of 1:1: 1; the deionized diluent is propylene glycol triacrylate.

In the step (1), the constant temperature reaction temperature in the constant temperature reaction kettle is 65 ℃, the operation time is 70 minutes, the rotating speed is 13 revolutions per minute, and the pressure in the constant temperature reaction kettle is 4kg.f/cm²。

Example 3: an ink-jet solvent medium is prepared from the following raw materials in parts by weight: 40% of solvent environment-friendly cocoate, 7% of leveling agent, 3% of humectant, 13% of lubricant, 8% of surfactant and 30% of deionized diluent.

Preferably, the leveling agent is a polyacrylate leveling agent; the humectant is an alcohol humectant with the viscosity of less than 100mPa.s, and the alcohol humectant is a mixture of glycerol and polyethylene glycol in a ratio of 1: 1; the lubricant is a mixture of polyhydric alcohol, ethylene glycol, propylene glycol and polypropylene glycol in a ratio of 1:1:1: 1; the surfactant molecules are a mixture of polyethylene glycol, sodium dodecyl sulfate and octyl phenol polyoxyethylene ether in a ratio of 1:1: 1; the deionized diluent is hydrolyzed polyacrylonitrile sodium salt.

In the step (1), the constant temperature reaction temperature in the constant temperature reaction kettle is 75 ℃, the operation time is 50 minutes, the rotating speed is 10 revolutions per minute, and the pressure in the constant temperature reaction kettle is negative pressure.

Example 4: an ink-jet solvent medium is prepared from the following raw materials in parts by weight: 35% of solvent environment-friendly cocoate, 9% of leveling agent, 4% of humectant, 14% of lubricant, 5% of surfactant and 25% of deionized diluent.

Preferably, the leveling agent is a silicon-containing acrylate leveling agent. The humectant is an alcohol humectant with the viscosity of less than 100mPa.s, and the alcohol humectant is a mixture of glycerol and polyethylene glycol in a ratio of 1: 1; the lubricant is a mixture of polyhydric alcohol, ethylene glycol, propylene glycol and polypropylene glycol in a ratio of 1:1:1: 1; the surfactant molecules are a mixture of polyethylene glycol, sodium dodecyl sulfate and octyl phenol polyoxyethylene ether in a ratio of 1:1: 1; the deionized diluent is dipropylene glycol diacrylate.

In the step (1), the constant temperature reaction temperature in the constant temperature reaction kettle is 65 ℃, the operation time is 50 minutes, the rotating speed is 15 revolutions per minute, and the pressure in the constant temperature reaction kettle is 4kg.f/cm²。

Example 5: an ink-jet solvent medium is prepared from the following raw materials in parts by weight: 45% of solvent environment-friendly cocoate, 5% of leveling agent, 1% of humectant, 10% of lubricant, 5% of surfactant and 35% of deionized diluent.

Preferably, the leveling agent is a silicon-containing acrylate leveling agent. The humectant is an alcohol humectant with the viscosity of less than 100mPa.s, and the alcohol humectant is a mixture of glycerol and polyethylene glycol in a ratio of 1: 1; the lubricant is a mixture of polyhydric alcohol, ethylene glycol, propylene glycol and polypropylene glycol in a ratio of 1:1:1: 1; the surfactant molecules are a mixture of polyethylene glycol, sodium dodecyl sulfate and octyl phenol polyoxyethylene ether in a ratio of 1:1: 1; the deionized diluent is dipropylene glycol diacrylate.

In the step (1), the constant temperature reaction temperature in the constant temperature reaction kettle is 75 ℃, the operation time is 70 minutes, the rotating speed is 15 revolutions per minute, and the pressure in the constant temperature reaction kettle is 4kg.f/cm². And (3) testing the freezing resistance: 50g of each of the inkjet solvent media prepared in examples 1 to 5 was placed in an environment at-50 ℃ for 24 hours, and no icing occurred.

And (3) viscosity testing: the inkjet solvent media prepared in examples 1 to 5 were each subjected to a viscosity test using a viscosity tester, wherein the inkjet solvent media prepared in examples 1 to 5 had viscosities of 11.9mpa.s, 12.2mpa.s, 11.5mpa.s and 12.5mpa.s, respectively, and the viscosity average value was 12 mpa.s.

All ranges in this application, including ranges for parts by weight of the starting materials and ranges for production parameters, etc., include both end values.

The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.