CN109021697A - A kind of preparation method of lubricious Pigment type neutral ink - Google Patents

Abstract

A preparation method of lubricating pigment-type neutral ink, the preparation method is to add deionized water, solvent, antirust agent, defoamer, preservative and pH regulator into the container, and add the viscosity adjustment agent under the uniform state of stirring. Stir the agent A, then add the viscosity modifier B and lubricant, mix and then add the pigment color paste in the stirring state for mixing, stop stirring after uniformity, carry out filtration and defoaming, and obtain a neutral ink; the pigment color The preparation of the slurry is to dissolve the resin in a solvent, then add defoamers, wetting agents, preservatives, pH regulators, dispersants and colorants in sequence, then add deionized water, emulsify at a low speed, and then grind to a nanoscale. The pigment particle size distribution is even, and the neutral ink pigment paste is prepared; this method realizes the maximization of the boundary lubrication and fluid lubrication after the nib is matched with the ink, thereby improving the overall lubrication performance of the ink, and making the gel pen using this ink Has excellent hand comfort.

Description

A kind of preparation method of smooth pigment type neutral ink

technical field

The invention relates to a gel pen pigment ink composition, in particular to a gel pen pigment type gel ink composition with super lubricity.

Background technique

Due to the lubricity of gel pen ink, the nib will be worn under the continuous application of shear force when writing. Moderate wear will lead to poor ink supply and lightening of the line color. In severe cases, the ink outlet will be blocked and cause Disconnection, the wear and tear of different situations makes the lubricating performance of the neutral ink higher, and the slip value of the neutral ink is generally required to be 0.200-0.230N; The lower apparent viscosity makes the state of the ink too thin, and there are phenomena such as throwing spots and excessive ink output. However, the slip value of this kind of neutral ink with better lubricating performance is as low as 0.180N, which is still not satisfactory. People's requirements for writing feel.

Oil-based ink is different from neutral ink, and it has greater advantages in lubricity. For example, the patent documents with publication number CN104109413 A and CN 104109419 A all use oil-based inks as objects to study their lubricity. , but due to the high viscosity of the oil-based ink, there will be a problem of poor fluency when writing.

Contents of the invention

In view of the above-mentioned problems, the purpose of the present invention is to provide a method for preparing lubricating pigment-type neutral ink with comfortable writing feel and uniform ink output in real time.

The above object is achieved through the following technical solutions.

A preparation method of lubricating pigment type neutral ink is characterized in that: the preparation method is carried out according to the following steps:

According to the weight parts of raw material composition and content, 32.3-69.4 parts of deionized water, 8.0-20.0 parts of solvent, 0.1-0.5 parts of rust inhibitor, 0.1-0.5 parts of defoaming agent, 0.1-0.5 parts of Add 1.0-3.0 parts of preservative and 1.0-3.0 parts of pH regulator into a container with a stirring device. After stirring evenly, add 0.5-1.0 parts of viscosity modifier A under stirring state. After 5 minutes, gradually increase the stirring speed , then add 0.5-1.0 parts of viscosity modifier B, and then add 0.3-1.2 parts of lubricant after 5 minutes. When the system is evenly mixed, add 20.0-40.0 parts of pigment paste under stirring until all ingredients are mixed After uniformity, stop stirring, filter and defoam to obtain neutral ink;

The raw material composition and content thereof of the pigment mill paste are prepared as follows in parts by weight:

After fully dissolving 8.0-20.0 parts of resin in 8.0-15.0 parts of solvent, add 0.2-0.6 parts of defoamer, 0.1-0.5 parts of wetting agent, 0.1-0.5 parts of preservative, 1.0-3.0 parts 20.0 parts of pH regulator, 0.6-1.6 parts of dispersant and 20.0-40.0 parts of coloring agent, and finally add 18.8-62.2 parts of deionized water. Stop grinding to make neutral ink pigment paste.

Further additional technical solutions are as follows.

A method for preparing a lubricating pigment type neutral ink is characterized in that: the solvent is one or more mixtures of polyethylene glycol, glycerol and sorbitol.

A method for preparing lubricating pigment-type neutral ink, characterized in that: the antirust agent is nitrogen-containing compound benzotriazole.

A method for preparing lubricating pigment-type neutral ink, characterized in that: the defoamer is a polyether-modified siloxane copolymer.

A method for preparing lubricating pigment type neutral ink, characterized in that: the preservative is 1,2 benzisothiazolin-3-one and its homologues.

A method for preparing lubricating pigment type neutral ink, characterized in that: the pH regulator is one of triethanolamine, monoethanolamine and 2-amino-2-methyl-1-propanol.

A method for preparing lubricating pigment type neutral ink, characterized in that: the wetting agent is a modified alkoxylate.

A method for preparing a lubricating pigment-type neutral ink, characterized in that: the viscosity modifier A is one of alkali-swellable acrylic thickening TT-615, DR-72 and HS 1152 with a thixotropic index of 7.0-10.0 kind.

A method for preparing a lubricating pigment-type neutral ink, characterized in that: the viscosity regulator B is one of alkali-swellable acrylic thickeners HS1212, DR-73 and TT-935 with a thixotropic index of 1.5-2.5 kind.

A method for preparing lubricating pigment type neutral ink, characterized in that: the lubricant is oleic acid and phosphoric acid ester, or a random mixture of the two.

A method for preparing lubricating pigment-type neutral ink, characterized in that: the resin is water-based epoxy-modified acrylic resin.

A method for preparing lubricating pigment-type neutral ink, characterized in that: the colorant is medium-pigment or low-pigment carbon black.

A method for preparing lubricating pigment-type neutral ink, characterized in that: the dispersant is a tripolyphosphate substance.

A method for preparing lubricating pigment-type neutral ink, characterized in that: the grinder for nanoscale grinding is equipped with 0.5mm zirconium beads, and the grinding speed is 2000-3000r/min.

Compared with the existing neutral ink, the neutral ink prepared by the preparation method of a lubricating pigment-type neutral ink provided by the present invention has the following advantages and positive effects.

The pigment-type neutral ink with super-lubricating performance prepared by the present invention is used for the detection of the writing slipmeter after being filled in the pen core, and can effectively reduce the friction when the friction pair moves relative to each other after a short running process. The friction coefficient and the uniform distribution of pigment particle size can not only reduce the direct contact caused by the rough surface, but also help the polar molecules in the adsorption film on the metal surface to form an oriented molecular layer, which is parallel or perpendicular to the friction surface. In the case of absorbing enough polar molecules, it can also form good boundary lubrication by inclination and bending; suitable shear viscosity can make the ink form good elastodynamic characteristics, that is, good fluid lubrication, good boundary lubrication and fluid The combination of lubrication thus reflects the effect of super lubricity; compared with ordinary neutral ink, the pigment type super lubricating neutral ink of the present invention can better reduce the wear resistance of the nib, and improve the writing feel and writing length of the pen. , Ink output and other aspects have a great optimization effect.

Description of drawings

Fig. 1 is a particle size distribution diagram when the particle size in the pigment paste of the present invention reaches the standard after nano-grinding but the distribution is uneven.

Fig. 2 is a particle size distribution diagram when the particle size in the pigment paste of the present invention reaches the standard after nano-grinding and is evenly distributed.

Fig. 3 is a graph showing the variation of the writing slip value with the writing rotation angle after the nib of the present invention is matched with the ink.

Fig. 4 is a graph showing the stability of the normal placement of the inks of Example 1, Comparative Example 1 and Comparative Example 2 of the present invention.

Fig. 5 is a graph showing the particle size distribution of pigments and the writing slippage value of matching nibs of the inks of Example 1 and Comparative Example 1 of the present invention.

Fig. 6 is a graph showing the stability of the normal placement of the inks of Example 2, Comparative Example 3 and Comparative Example 4 of the present invention.

Fig. 7 is a graph showing the particle size distribution of pigments and the writing slippage value of the matched nib of the inks of Example 2 and Comparative Example 3 of the present invention.

Fig. 8 is a graph showing the viscosity data, thixotropic index and writing slip of the inks of Example 3, Comparative Example 5 and Comparative Example 6 of the present invention.

Detailed ways

The specific implementation manners of the present invention will be further described below.

Implement the preparation method of a kind of lubricating pigment type neutral ink provided by the present invention, comprise implementing the raw material composition of lubricating pigment type neutral ink and the proportioning scheme of content thereof, implement the raw material of lubricating pigment type neutral ink pigment paste The proportioning scheme of composition and content thereof, the preparation method of lubricating pigment type neutral ink, the preparation method of lubricating pigment type neutral ink pigment paste, the embodiment of concrete preparation method is as follows:

Implement the raw material composition of a kind of lubricating pigment type neutral ink and the proportioning scheme of content thereof by weight parts as follows:

20.0-40.0 parts by weight of pigment paste;

Solvent 8.0-20.0 parts by weight;

Rust inhibitor 0.1-0.5 parts by weight;

Defoamer 0.1-0.5 parts by weight;

Preservative 0.1-0.5 parts by weight;

1.0-3.0 parts by weight of pH regulator;

Viscosity modifier A 0.5-1.0 parts by weight;

Viscosity modifier B 0.5-1.0 parts by weight;

0.3-1.2 parts by weight of lubricant;

32.3-69.4 parts by weight of deionized water.

Implement the raw material composition of a kind of lubricating pigment type neutral ink pigment color paste and the proportioning scheme of its content by weight parts as follows:

Colorant 20.0-40.0 parts by weight;

Solvent 8.0-15.0 parts by weight;

0.2-0.6 parts by weight of defoamer;

0.1-0.5 parts by weight of wetting agent;

Preservative 0.1-0.5 parts by weight;

1.0-3.0 parts by weight of pH regulator;

Resin 8.0-20.0 parts by weight;

Dispersant 0.6-1.6 parts by weight;

18.8-62.2 parts by weight of deionized water.

A kind of preparation method of lubricating pigment type neutral ink pigment color paste is carried out as follows according to the above-mentioned parts by weight proportioning:

The formula is measured in parts by weight. After the resin is fully dissolved in the solvent, defoamers, wetting agents, preservatives, pH regulators, dispersants and colorants are added in sequence, and finally deionized water is added to 100%. Part of it is used to clean the residual amount. After the low-speed emulsification is uniform, the nano-scale grinding is carried out until the particle size distribution of the pigment is relatively uniform, and the grinding is stopped.

A kind of preparation method of implementing lubricating pigment type neutral ink is to carry out as by above-mentioned parts by weight proportioning:

Measured according to the formula, add deionized water, solvent, antirust agent, defoamer, preservative, and pH regulator into a container with a stirring device. After stirring evenly, add viscosity regulator A first under stirring. After 5 minutes, gradually increase the stirring speed, add viscosity modifier B, and add lubricant after 5 minutes. When the system is evenly mixed, add pigment paste under stirring until all ingredients are evenly mixed, stop stirring, and perform filtration and defoaming Get gel ink.

The further additional implementation technical scheme of above-mentioned embodiment is as follows:

The solvent used in the present invention is a water-soluble low-carbon alcohol, specifically one or more mixtures of polyethylene glycol, propylene glycol, glycerol, diethylene glycol, ethylene glycol, and sorbitol.

The antirust agent used in the present invention is a nitrogen-containing compound benzotriazole, the defoamer is a polyether modified siloxane copolymer, and the preservative is 1,2 benzisothiazolin-3-ketone and its Homologues, the wetting agent is a modified alkoxylate.

The pH regulator used in the present invention is an organic base neutralizer, such as one of triethanolamine, monoethanolamine, and 2-amino-2-methyl-1-propanol.

The viscosity modifier A used in the present invention is a high thixotropic index alkali-swellable acrylic thickener with a thixotropic index of 7.0-10.0, such as one of TT-615, DR-72, and HS 1152.

The viscosity modifier B used in the present invention is a low thixotropic index alkali-swellable acrylic thickener with a thixotropic index of 1.5-2.5, such as one of HS 1212, HS 1332, DR-73, and TT-935.

The lubricant used in the present invention is oleic acid, phosphoric acid ester or a mixture of the two.

The colorant used in the present invention is medium pigment or low pigment carbon black, such as Japan Mitsubishi carbon black.

The resin used in the present invention is a multi-component acrylic copolymer, such as water-based epoxy-modified acrylic resin.

The dispersant used in the present invention is tripolyphosphate.

The grinding machine described in the present invention is equipped with 0.5mm zirconium beads, and the grinding speed is 2000-3000r/min.

Realize the technical scheme of the preparation method of a kind of lubricating pigment type neutral ink provided by the present invention, its lubricity detection adopts the lubricity detector of Jinan Kaileidi Precision Instrument Co., Ltd. to detect by writing, the pen core to be tested Load it on the writing slip tester, place 50g of special weights for loading, and then set the parameters: the ball size of the pen head is 0.5mm, the number of tests is 10 times, the interval distance is 2mm, the line drawing angle is 90°, and the rotation speed is 4.5m/min, the number of rotations is 1r, and the radius of the circle is 50mm. After the settings are completed, click to start the test, and get 10 sets of slippage values and their average values. The average value is the slippage value of the pen core.

The technical solution of the present invention will be further described below according to specific embodiments and accompanying drawings. The protection scope of the present invention is not limited to the following examples, which are listed for illustrative purposes only and do not limit the present invention in any way.

Example 1

(1) Fully dissolve 10 parts of water-based epoxy-modified acrylic resin in a mixture of 10 parts of polyethylene glycol and 10 parts of deionized water, and add 0.4 parts of polyether-modified siloxane copolymer, 0.2 parts of Modified alkyl oxide, 0.2 parts of 1,2 benzisothiazolin-3-one, 2 parts of triethanolamine, 1 part of tripolyphosphate and 30 parts of Mitsubishi carbon black, and finally add 30.2 parts of deionized water , transferred for low-speed emulsification, 6 parts of deionized water to wash the residual amount, after emulsification for 1 hour, carry out nanoscale grinding at a speed of 2700r/min, with 0.5mm zirconium beads, stop grinding after 60 minutes to obtain a pigment paste.

(2) Mix 41.7 parts of deionized water, 15 parts of polyethylene glycol, 5 parts of propylene glycol, 2 parts of ethylene glycol, 0.2 parts of benzotriazole, 0.2 parts of polyether modified siloxane copolymer, 0.2 parts of 1 , 2 parts of benzisothiazolin-3-one and 2 parts of triethanolamine are added to a container with a stirring device. After stirring evenly, 1.3 parts of xanthan gum are added under stirring, and 0.5 parts of oleic acid are added after 5 minutes. After the system is evenly mixed, add the pigment paste prepared in (1) under stirring until all the ingredients are evenly mixed, then stop stirring, perform filtration and defoaming to obtain the ink of Example 1.

Comparative Example 1: The grinding time during the preparation of the pigment paste was 40 minutes, and the other components and operations in Example 1 remained unchanged, and the ink of Comparative Example 1 was prepared.

Comparative Example 2: The grinding time during the preparation of the pigment paste was 80 minutes, and the other components and operations in Example 1 remained unchanged, and the ink of Comparative Example 2 was prepared.

The stability of the normal placement of the neutral inks prepared in Example 1, Comparative Example 1 and Comparative Example 2 is shown in Figure 1 of the attached table.

It can be seen from Figure 1 in the attached table that the neutral ink prepared when the color paste grinding time is too long in Comparative Example 2 is stored under normal conditions, and the system remains stable for a short time, which does not meet the basic needs of neutral ink.

The inks prepared in Example 1 and Comparative Example 1 were respectively matched with the mainstream 0.5mm ball diameter bullet-shaped nibs in the market, and the slip value was detected according to the detection rules of the writing slip meter. The test results are shown in Figure 2 of the attached table.

It can be seen from the attached table Figure 2 that the grinding time of the color paste in Comparative Example 1 is shorter, and although the particle size of some particles in the pigment color paste is smaller, the number of direct contact at the peak of the rougher surface increases due to the uneven particle size distribution , the boundary friction increases and the slipperiness becomes worse.

And embodiment 1 not only avoids the problem that the long-term placement stability of the ink caused by excessive grinding is deteriorated by controlling the grinding time, but also can reduce the number of times of shearing between the ball and the bottom of the ball seat on the rough surface through uniform particle size distribution. Reduce and reduce the degree of wear, which improves the lubricating performance of the ink to a certain extent.

Example 2

(1) Fully dissolve 10 parts of water-based epoxy-modified acrylic resin in a mixture of 10 parts of polyethylene glycol and 10 parts of deionized water, and add 0.4 parts of polyether-modified siloxane copolymer, 0.2 parts of Modified alkyl oxide, 0.2 parts of 1,2 benzisothiazolin-3-one, 2 parts of triethanolamine, 1 part of tripolyphosphate and 20 parts of Mitsubishi carbon black, and finally add 40.2 parts of deionized water , transferred for low-speed emulsification, 6 parts of deionized water to wash the residual amount, after emulsification for 1 hour, carry out nanoscale grinding at a speed of 2700r/min, with 0.5mm zirconium beads, stop grinding after 40min to obtain a pigment paste.

(2) Mix 41.7 parts of deionized water, 15 parts of polyethylene glycol, 5 parts of propylene glycol, 2 parts of ethylene glycol, 0.2 parts of benzotriazole, 0.2 parts of polyether modified siloxane copolymer, 0.2 parts of 1 , 2 parts of benzisothiazolin-3-one and 2 parts of triethanolamine are added to a container with a stirring device. After stirring evenly, 1.3 parts of xanthan gum are added under stirring, and 0.5 parts of oleic acid are added after 5 minutes. After the system is evenly mixed, add the prepared pigment paste under stirring until all the ingredients are evenly mixed, then stop stirring, perform filtration and defoaming to obtain the ink of Example 2.

Comparative Example 3: The grinding time during the preparation of the pigment paste was 30 minutes, and the other components and operations in Example 2 remained unchanged, and the ink of Comparative Example 3 was prepared.

Comparative Example 4: The grinding time during the preparation of the pigment paste was 50 minutes, and the other components and operations in Example 2 remained unchanged, and the ink of Comparative Example 4 was prepared.

The stability of the normal placement of the neutral inks prepared in Example 2, Comparative Example 3 and Comparative Example 4 is shown in Table 3.

It can be seen from Table 3 that the neutral ink prepared when the color paste grinding time is too long in Comparative Example 4 is stored under normal conditions, and the system remains stable for a short time, which does not meet the basic requirements of neutral ink.

The inks prepared in Example 2 and Comparative Example 3 were respectively matched with the mainstream 0.5mm ball diameter bullet-shaped nibs in the market to detect the slip value according to the detection rules of the writing slip meter. The test results are shown in Table 4.

It can be seen from Table 4 that the milling time of the color paste in Comparative Example 3 is shorter, although the particle size of some particles in the pigment color paste is smaller, but due to the uneven distribution of particle size, the number of direct contact at the peak of the rough surface increases, and the boundary Friction increases and slippage deteriorates.

Example 3

(1) Fully dissolve 10 parts of water-based epoxy-modified acrylic resin in a mixture of 10 parts of polyethylene glycol and 10 parts of deionized water, and add 0.4 parts of polyether-modified siloxane copolymer, 0.2 parts of Modified alkyl oxide, 0.2 parts of 1,2 benzisothiazolin-3-one, 2 parts of triethanolamine, 1 part of tripolyphosphate and 30 parts of Mitsubishi carbon black, and finally add 30.2 parts of deionized water , transferred for low-speed emulsification, 6 parts of deionized water to wash the residual amount, after emulsification for 1 hour, carry out nanoscale grinding at a speed of 2700r/min, with 0.5mm zirconium beads, stop grinding after 60 minutes to obtain a pigment paste.

(2) Mix 42 parts of deionized water, 15 parts of polyethylene glycol, 5 parts of propylene glycol, 2 parts of ethylene glycol, 0.2 parts of benzotriazole, 0.2 parts of polyether modified siloxane copolymer, 0.2 parts of 1 , Add 2 benzisothiazolin-3-one and 2 parts of triethanolamine into a container with a stirring device. After stirring evenly, add 0.5 parts of TT-615 under stirring. After 5 minutes, gradually increase the stirring speed, and add 0.5 part of TT-935, 0.5 part of oleic acid was added after 5 minutes, when the system was mixed evenly, the prepared pigment paste was added under stirring until all the ingredients were mixed evenly, then the stirring was stopped, filtered and defoamed to obtain Example 3 ink.

Comparative Example 5: only use high thixotropic index thickener TT-615 as the viscosity modifier in the ink formula, and use the thixotropic formulation standard of the ink in Example 3, add 0.8 parts of TT-615 in Comparative Example 5, and add 0.8 parts of TT-615 in Example 3 The remaining 0.2 parts of the thickener were replaced with deionized water to prepare the comparative example 5 ink.

Comparative example 6: Only adopt the low thixotropic index thickener TT-935 as the viscosity regulator in the ink formula, with the thixotropic deployment standard of the ink in Example 3, add 1.4 parts of TT-935 in Comparative Example 5, Example 3 The extra 0.4 part of thickener added was deducted from the weight part of deionized water to prepare comparative example 6 ink.

The viscosity data and thixotropic index of the neutral ink that embodiment 3, comparative example 5 and comparative example 6 make are as shown in attached table Fig. 5.

It can be seen from Figure 5 in the attached table that with the same thixotropic index as the deployment standard, the high thixotropic index thickener alone, the low thixotropic index thickener alone, the high thixotropic index thickener and the low thixotropic thickener are used respectively. The mixture of exponential thickeners uses the ink prepared in three ways. Although their shear viscosity and thixotropic index are in line with the actual ink application requirements, due to the high shear rate (closer to the ink in the pen tip when writing) shear rate) determines the thickness of the viscous fluid film in the writing state, the thickness of the viscous fluid film in Comparative Example 5 is relatively too thin, the characteristics of the elastohydrodynamic lubrication caused are not obvious, and even problems such as ink accumulation appear; In comparative example 6, the thickness of the viscous fluid film is relatively too thick, resulting in problems such as poor ink flow and jerky writing feel.

As can be seen from the experimental results of Examples 1-3, the pigment-based neutral ink with super lubricating properties of the present invention realizes the adjustment of the particle size distribution of the color paste pigment through reasonable control of different amounts of colorants and grinding time optimization, thus realizing the reduction of the boundary friction coefficient between the ball, the pigment particle and the bottom of the ball seat; at the same time, through the comprehensive use of the thickener, it effectively solves the problem that the ink cannot completely cover the ball and the viscous fluid in the writing state If the film is too thin, it will lead to problems such as serious direct contact between the ball and the bottom of the ball seat. Under the joint action of boundary lubrication and fluid lubrication, the super lubricity of pigment-based neutral ink is realized, which meets the needs of consumers for a comfortable writing feel.

Claims (10)

1. a kind of preparation method of lubricious Pigment type neutral ink, it is characterised in that: the preparation method be follow these steps into Capable:

By raw material composition and its content parts by weight based on, by 32.3-69.4 parts of deionized water, 8.0-20.0 parts of solvent, 0.1-0.5 parts of antirust agent, 0.1-0.5 parts of defoaming agent, 0.1-0.5 parts of preservative and 1.0-3.0 parts of pH adjusting agent, add Enter into the container with agitating device, after mixing evenly, 0.5-1.0 parts of viscosity modifier A be first added under stirring, After 5min, speed of agitator is gradually increased, adds 0.3-1.2 parts after adding 0.5-1.0 parts of viscosity modifier B, 5min Lubricant, when system after mixing, 20.0-40.0 parts of dispersible pigment color paste is added under stirring, until all the components After mixing, stop stirring, be filtered, Neutral writing ink is made after deaeration；

The raw material composition and its content of the dispersible pigment color paste prepare as follows by weight:

In 8.0-15.0 parts of solvent after completely dissolution by 8.0-20.0 parts of resin, 0.2-0.6 parts of defoaming is sequentially added Agent, 0.1-0.5 parts of wetting agent, 0.1-0.5 parts of preservative, 1.0-3.0 parts of pH adjusting agent, 0.6-1.6 parts of dispersing agent And 20.0-40.0 parts of colorant, 18.8-62.2 part of deionized water is finally added, after low speed emulsification uniformly, progress nanoscale Grinding stops grinding until pigment particle size is evenly distributed, and Neutral writing ink dispersible pigment color paste is made.

2. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the solvent is poly- second One of glycol, glycerine and sorbierite or a variety of mixing；The antirust agent is nitrogenous compound benzotriazole；It is described to disappear Infusion is polyether modified siloxane copolymer；The preservative is 1,2 benzisothiazole-3-ketones and its homologue；The profit Humectant is modified alkoxylated object.

3. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the pH adjusting agent is One of triethanolamine, monoethanolamine and 2-amino-2-methyl-1-propanol.

4. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the viscosity modifier A is that the swollen acrylic compounds of alkali soluble that thixotropic index is 7.0-10.0 thicken one of TT-615, DR-72 and HS 1152.

5. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the viscosity modifier B is one of swollen acrylic thickener HS1212, DR-73 of alkali soluble that thixotropic index is 1.5-2.5 and TT-935.

6. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the lubricant is oil Acid and phosphate, or both any mixing.

7. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the resin is aqueous Epoxy modified acrylic resin.

8. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: during the colorant is Pigment or low colour carbon black.

9. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the dispersing agent is three Quadrafos substance.

10. the preparation method of lubricious Pigment type neutral ink as described in claim 1, it is characterised in that: the carry out nanometer The grinder of grade grinding is adapted 0.5mm zirconium pearl, and grinding revolving speed is 2000-3000r/min.