JP5368334B2 - Surface protective agent for printed matter and surface protective method for printed matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface protecting agent for a printed matter which consists of a nonsilicone-based material or the like having no fear of deactivation of a platinum catalyst and which can demonstrate rubbing preventing performance or the like even when high-speed printing or the like is carried out and further to provide a method for protecting a printed matter surface using the surface protecting agent. <P>SOLUTION: The surface protecting agent for the printed matter is used as an aqueous dispersion containing (A) 100 pts.wt. of water, (B) 0.01 to 10 pts.wt. of at least one water-insoluble aliphatic compound selected from a group consisting of fatty acid glycol ester, aliphatic alcohol, aliphatic alcohol ester, aliphatic ether and fatty acid monoalkylolamide and (C) 0.01 to 20 pts.wt. of a surfactant. The method for protecting the printed matter surface using the surface protecting agent is also provided. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a surface protective agent for printed matter and a method for protecting the surface of the printed matter. In particular, the present invention relates to a surface protective agent for printed matter, which is made of a non-silicone material or the like, and is applied to efficiently protect the surface of the printed matter, and a surface protection method for the printed matter using such a surface protective agent for printed matter.

Conventionally, the surface of a printed matter obtained using a rotary printing press is scratched on the surface due to friction with a mechanical device for performing these steps in a folding step or a cutting step as a post-process. In order to prevent this, a surface protective agent for printed matter called a so-called anti-scratch agent is applied.
Here, a silicone oil emulsion comprising a silicone oil and a surfactant has been proposed as such a surface protective agent for printed matter. (For example, refer to Patent Document 1).
More specifically, it is an aqueous emulsion formed by adding water to a cationic surfactant to form a liquid crystal, mixing and stirring the liquid crystal and organopolysiloxane, and mixing the mixture with water. A surface treatment agent for printing paper having an average particle diameter of 10 μm or less is disclosed.

In addition, a concentrated antistatic agent composition for offset rotary printing containing a predetermined polyethylene oxide as an essential component has been proposed in order to improve the charging property, sliding property, cosmetic property, and wettability of the printed material. (For example, refer to Patent Document 2).
More specifically, a concentrated antistatic agent for web offset printing, which is a water-soluble polymer having a molecular weight of 200 to 8000, comprising polyethylene oxide having a predetermined structural formula as an essential component, and further comprising a surfactant and water. A composition is disclosed.

Further, a web coater liquid for an offset printing press has been proposed, which is composed of an aqueous dispersion containing a polyolefin wax capable of achieving both friction resistance and moderate slipperiness. (For example, see Patent Document 3)
More specifically, it is a web coater liquid comprising an aqueous dispersion containing 0.1 to 3.0% by weight of polyethylene wax, wherein the total nonvolatile content in the aqueous dispersion is 0.2 to 10.0% by weight. %, And a web coater liquid for an offset printing machine in which the ratio of the polyethylene wax to the total nonvolatile content is 5 to 100% by weight.

In addition, a coating agent for offset printing containing a non-silicone surfactant has been proposed for the purpose of improving anti-cosmetics, static electricity removal and slip promotion in offset printing, and preventing poisoning of the platinum catalyst ( For example, see Patent Document 4).
More specifically, it is a coating agent for offset printing containing an emulsion type resin, a granular wax, and a non-silicone surfactant, and the glass transition point of the emulsion type resin is in the range of 0 to 80 ° C. And a coating agent for offset printing in which the average particle size of the granular wax is a value in the range of 2 to 10 μm and the solid content concentration is a value in the range of 0.6 to 4% by weight.
As the non-silicone surfactant, acetylene glycol surfactants, fluorine surfactants, and acrylic polymer surfactants are disclosed as preferable.

Japanese Patent Laid-Open No. 11-12985 JP 2009-72979 A JP-A-10-287060 JP 2007-296637 A

However, since the surface protective agent for printed matter disclosed in Patent Document 1 uses a silicone compound such as a silicone polymer, the silicone compound is scattered in the air, which is a platinum catalyst used as a combustion catalyst. The problem that it was easy to deactivate was seen.
That is, there is a problem that the platinum catalyst used as a combustion catalyst of the treatment device for burning the exhaust gas at the time of drying of the printing device at low temperature and deodorizing is poisoned by the scattered silicone compound and easily deactivated. It was. Therefore, due to the replacement of the expensive platinum catalyst, there has been a problem that a predetermined printing operation has to be interrupted frequently, which is economically disadvantageous.

Further, the concentrated antistatic agent composition for rotary offset printing disclosed in Patent Document 2 can exhibit a predetermined anti-scoring performance at a printing speed of relatively low, for example, 400 rpm, but the printing speed. Is relatively fast, for example, when the rotational speed is 800 rpm, there has been a problem that the predetermined anti-scoring performance cannot be exhibited.
More specifically, when the printing speed in the printing apparatus is relatively fast, a guide roll for flowing the printed material in a predetermined direction, a homer for folding the printed material in two in the flow direction, and for changing the flow direction of the printed material. In an accompanying device such as an impeller for feeding a turn bar or a cut and folded printed material to a conveyor, there has been a problem that a scratch on the surface of the printed material is likely to occur.

Further, when the web coater liquid for offset printing machine disclosed in Patent Document 3 is used, polyolefin wax accumulates at the air outlet of the homer or turn bar in the printing apparatus, and mixes with the ink, thereby increasing the size of black rice grains. There was a problem of becoming a hard material. That is, there has been a problem that such a hard substance is more likely to adhere to the surface of the printed matter or to cause a scratch on the printed matter.
In addition, solid matter (fine powder) due to the polyolefin wax component is deposited around the coating roll, and there is a problem that the printing environment is deteriorated.

Furthermore, although the coating agent for offset printing disclosed in Patent Document 4 contains granular wax having a predetermined particle diameter, as in Patent Document 2, when the printing speed is relatively high, the predetermined anti-scoring performance is achieved. The problem of not being able to demonstrate was seen.
Further, in the case of the coating agent for offset printing disclosed in Patent Document 4, since it contains a considerable amount of emulsion type resin and granular wax, as in Patent Document 3, a black rice grain-sized hard material is used in the accompanying device. There was a problem that substances were easily generated.

In view of the above circumstances, the present inventors have made extensive efforts to find out whether a predetermined water-insoluble aliphatic compound (for example, a flaky crystallized product of an aliphatic compound), a surfactant, water, , By applying a surface protective agent for printed matter comprising a predetermined amount of each to the surface of the printed matter, not only when the printing speed of the printed matter is relatively slow, but also when the printing speed is high, or The present invention has been completed by finding out that a predetermined anti-scoring performance and the like can be exhibited even when continuous printing is performed for a long period of time.
That is, an object of the present invention is to provide a surface protective agent for printed matter, which is made of a non-silicone material or the like with a low risk of deactivation of the platinum catalyst, and can provide excellent anti-scoring performance regardless of printing speed, and such printed matter. Another object of the present invention is to provide a method for protecting the surface of a printed material using the surface protective agent for use.

According to the present invention, a surface protective agent for printed matter, which is an aqueous dispersion containing the following components (A) to (C), is provided, and the above-described problems can be solved.
(A) Water: 100 parts by weight (B) At least one water-insoluble aliphatic compound selected from the group consisting of fatty acid glycol ester, aliphatic alcohol, aliphatic alcohol ester, aliphatic ether, and fatty acid monoalkylolamide : 0.01 to 10 parts by weight (C) Surfactant: 0.01 to 20 parts by weight Thus, a water dispersion containing a predetermined amount of water, a predetermined water-insoluble aliphatic compound, and a surfactant. The surface protective agent for printed matter is constituted from the body, and applied to the printed matter as a diluted or adjusted stock solution, etc., so that the printed matter can proceed smoothly even when it is printed at high speed or for a long period of time. Is ensured, and predetermined anti-scoring performance and the like can be effectively exhibited.
On the other hand, since the surface protective agent for printed matter of the present invention is composed of a non-silicone material, there is no problem of deactivation of a platinum catalyst used as a combustion catalyst for exhaust gas in a processing apparatus.
In addition, as will be described later, the surfactant as the component (C) is preliminarily heated and melt mixed with the water-insoluble aliphatic compound as the component (B) to obtain a flake having a eutectic. It is preferable to add it as a part of the gaseous aliphatic compound.
Accordingly, in the case where there is a surfactant residue in consideration of a predetermined amount of the surfactant, the residue is added later at the time of final adjustment.
In addition, in the description of the blending amount of the surface protective agent for printed matter of the present invention, the components (A) to (C) or the components (D) to (E) described later include a predetermined amount of volatile components, It is shown as a converted value obtained by removing it from the main component.

Moreover, when comprising the surface protection agent for printed matter of this invention, it is preferable to make the melting | fusing point of the water-insoluble aliphatic compound as (B) component into the value of 35 degreeC or more.
In this way, by using a water-insoluble aliphatic compound having a melting point of a predetermined temperature, even when the printing apparatus rotates at a high speed and the printed material generates frictional heat at a high speed, the printed material is maintained while maintaining a predetermined shape. It is possible to effectively exhibit a predetermined rust prevention property and the like.

In constituting the surface protective agent for printed matter of the present invention, the water-insoluble aliphatic compound as the component (B) is preferably made into a flaky shape.
By constituting the surface protective agent for printed matter containing such a water-insoluble aliphatic compound, the flaky aliphatic compound can be easily oriented in parallel along the paper surface direction at the time of application. Even in such a case, the surface of the printed matter can be effectively concealed.
Therefore, even when printing is performed at a high speed by a printing apparatus or when printing is performed for a long period of time, a predetermined amount of the printed matter obtained with a relatively small amount of a water-insoluble aliphatic compound is used. The anti-cosmetic property can be exhibited more effectively.
Compared to non-flaky aliphatic compounds, for example, spherical aliphatic compounds, flaky aliphatic compounds are less likely to be embedded in paper fiber gaps and ink, and are effective in preventing scratch damage. It is thought that it demonstrates to

Further, in constituting the surface protective agent for printed matter of the present invention, the surfactant as the component (C) is a dialkyldimethylammonium chloride derived from a fatty acid having 10 to 22 carbon atoms as a cationic surfactant, or It is preferable to include a quaternary ammonium salt type cationic surfactant such as monoalkyltrimethylammonium chloride derived from a fatty acid having 10 to 22 carbon atoms.
As described above, by constituting a surface protective agent for printed matter containing a predetermined cationic surfactant, the antistatic ability is improved, the paper alignment property is improved, and a predetermined cosmetic is applied to the printed matter. The prevention performance and the like can be exhibited more effectively.

Further, in constituting the surface protective agent for printed matter of the present invention, as the component (D), an antistatic agent is further contained, and the content of the component (D) is adjusted to 100 parts by weight of water as the component (A). On the other hand, it is preferable to set it as the value within the range of 0.1-20 weight part.
By configuring the surface protective agent for printed matter in this way, the predetermined antistatic effect can be effectively exhibited while maintaining the predetermined anti-scoring property.
In addition, when the water-insoluble aliphatic compound (B) and the surfactant (C) are subjected to a eutectic reaction to form a eutectic structure, charging is added to the anti-scoring ability. In order to effectively exhibit the prevention effect, the content of the antistatic agent as the component (D) is preferably less than 0.1 parts by weight with respect to 100 parts by weight of the water as the component (A). .

Further, in constituting the surface protective agent for printed matter of the present invention, the component (E) further contains a viscosity modifier, and the content of the component (E) is 100 parts by weight of water as the component (A). On the other hand, the value is preferably within the range of 0.001 to 30 parts by weight.
By configuring the surface protective agent for printed matter in this way, the surface protective agent for printed matter tends to become excessively high or low in viscosity due to changes in ambient temperature, types of surfactants, blending amounts, and the like. Even if it is a case, the viscosity at the time of using the surface protection agent for printed matter can be adjusted to the value within an appropriate range.

In forming the surface protective agent for printed matter of the present invention, the water-insoluble aliphatic compound (B) and the surfactant (C) react with each other through a eutectic reaction to form a eutectic structure. It is preferable to have.
By configuring the surface protective agent for printed matter in this way, the antistatic agent can be omitted, or the blending amount of the antistatic agent can be reduced as much as possible. That is, this is because the antistatic effect can be efficiently exhibited due to the eutectic structure in the reaction product of the component (B) and the component (C).

Still another embodiment of the present invention comprises (B) fatty acid glycol ester, aliphatic alcohol, aliphatic alcohol ester, aliphatic ether, and fatty acid monoalkylolamide with respect to (A) 100 parts by weight of water. Surface for printed matter as an aqueous dispersion containing 0.01 to 10 parts by weight of at least one water-insoluble aliphatic compound selected from the group, and 0.01 to 20 parts by weight of (C) a surfactant. A method for protecting a surface of a printed material using a protective agent, comprising the following steps (i) to (iii):
(I) A printing process in which printing is performed on a printing medium using a printing ink to obtain a printed material. (Ii) A coating process in which a surface protective agent for the printed material is applied to the surface of the printed material. (Iii) A surface protective agent for the printed material. Forming the surface protection member by performing the surface protection method in this way, even if the speed by the printing device is relatively high-speed rotation or when printing for a long time, respectively The surface protection member formed on the surface of the obtained printed matter can exhibit predetermined anti-scratch properties.

FIG. 1 is a laser micrograph provided to explain the planar state of a flaky aliphatic compound. FIGS. 2A to 2B are schematic views provided to explain the planar state and the alignment state of the flaky aliphatic compound on the printed material surface. FIGS. 3A to 3C are diagrams provided for explaining the procedure of the surface protection method for a printed material using the surface protective agent for a printed material of the present invention. FIG. 4 is a diagram for explaining the outline of the offset printing apparatus using the surface protective agent for printed matter of the present invention.

[First embodiment]
The first embodiment is a surface protective agent for printed matter, which is an aqueous dispersion containing the following components (A) to (C).
(A) Water: 100 parts by weight (B) At least one water-insoluble aliphatic compound selected from the group consisting of fatty acid glycol ester, aliphatic alcohol, aliphatic alcohol ester, aliphatic ether, and fatty acid monoalkylolamide : 0.01 to 10 parts by weight (C) Surfactant: 0.01 to 20 parts by weight In addition, FIG. 1 illustrates the flaky aliphatic compound 2 used for the surface protective agent for printed matter according to the first embodiment. FIG. 2A to FIG. 2B are photographs taken using a laser microscope (Optex C130 manufactured by Lasertec Co., Ltd.) provided for the purpose, and FIGS. 2A to 2B show the planar state of the flaky aliphatic compound 2 on the surface of the printed matter 5 and It is a schematic diagram provided in order to demonstrate an orientation state.
Hereinafter, the surface protective agent for printed matter will be specifically described for each constituent requirement with reference to the drawings as appropriate.

1. (A) Component (1) Aqueous material The surface protective agent for printed matter according to the first embodiment includes an aqueous dispersion containing a considerable amount of water (however, it may contain alcohol if it is in the range of less than 8% by weight). )), The predetermined surface protection member can be formed without damaging the printed matter to be applied.
In addition, if the surface protective agent for printed matter is an aqueous dispersion containing a considerable amount of water, it can be handled easily at the time of production, storage, water dilution or application.

(2) Blending amount The blending amount of water as the component (A) is usually preferably a value within the range of 80 to 99.7% by weight with respect to the total amount of the surface protective agent for printed matter. .
The reason for this is that when the amount of water is less than 80% by weight, when applied to a printed material, the surface becomes sticky, the printed materials stick to each other, or handling as an aqueous material becomes difficult. This is because there are cases.
On the other hand, when the amount of the water exceeds 99.7% by weight, it is difficult to stably form a predetermined protective film, and it is difficult to exhibit predetermined anti-scoring performance and the like. Because there is.
Therefore, it is more preferable that the blending amount of water as the component (A) is a value within the range of 85 to 99.5% by weight with respect to the total amount of the surface protective agent for printed matter, and 88 to 99.3. It is more preferable to set the value within the range of wt%, and it is most preferable to set the value within the range of 90 to 99 wt%.
In addition, when comprising as a stock solution of the surface protective agent for printed matter, that is, as a stock solution composition when a predetermined amount of water is additionally diluted to obtain a surface protective agent for printed matter, the blending amount of water as component (A) Is preferably a value within the range of 50 to 95% by weight, for example, with respect to the total amount of the surface protective agent for printed matter.

2. (B) Component (1) Type As the component (B), at least one water-insoluble substance selected from the group consisting of fatty acid glycol ester, aliphatic alcohol, aliphatic alcohol ester, aliphatic ether, and fatty acid monoalkylolamide An aliphatic compound is blended.
This is because these water-insoluble aliphatic compounds are likely to crystallize and maintain a predetermined shape. That is, when applied as a surface protective agent for printed matter containing a water-insoluble aliphatic compound, a predetermined surface protective member can be formed on the surface of the printed matter, and anti-scoring performance and the like can be effectively exhibited.
In addition, since the aliphatic compound is water-insoluble, when mixed with water or a water-soluble solvent, it can be configured as an aqueous dispersion containing a surface protective member having a predetermined shape without dissolving. .
As a measure of water insolubility in the water insoluble aliphatic compound, the solubility of the water insoluble aliphatic compound in 100 g of water at 25 ° C. is preferably 0.1 g or less, and 0.01 g or less. Is more preferable.

  Here, specifically, the fatty acid glycol ester (fatty acid alkylene glycol ester) as the component (B) is preferably a compound represented by the following general formula (1).

Y—O— (A—O) _n —COR ¹ (1)

(In General Formula (1), R ¹ is a hydrocarbon group having 13 to 21 carbon atoms, and Y is a hydrogen atom or COR ¹ (R ¹ is a hydrocarbon group having 13 to 21 carbon atoms. The symbol A is an alkylene group having 2 or 3 carbon atoms, and the repeating number n is a natural number of 1 to 3.)

  More specifically, preferred examples of the fatty acid glycol ester include ethylene glycol monomyristate, ethylene glycol monopalmitate, ethylene glycol monostearate, ethylene glycol monobehenate, ethylene glycol dimyristate, ethylene glycol dipalmitate, distearate. Acid ethylene glycol, dibehenic acid ethylene glycol, monomyristic acid diethylene glycol, monopalmitic acid diethylene glycol, monostearic acid diethylene glycol, monobehenic acid diethylene glycol, dimyristic acid diethylene glycol, dipalmitic acid diethylene glycol, distearic acid diethylene glycol, dibehenic acid diethylene glycol, monomyristic acid tri Ethylene glycol Triethylene glycol palmitate, triethylene glycol monostearate, triethylene glycol monobehenate, triethylene glycol dimyristate, triethylene glycol dipalmitate, triethylene glycol distearate, triethylene glycol dibehenate, propylene glycol dimyristate , Propylene glycol dipalmitate, propylene glycol distearate, propylene glycol dibehenate, dipropylene glycol dimyristate, dipropylene glycol dipalmitate, dipropylene glycol distearate, dipropylene glycol dibehenate, etc. It is a combination.

  The aliphatic alcohol is preferably a compound represented by the following general formula (2).

R ² —OH (2)

(In General Formula (2), R ² is a hydrocarbon group having 16 to 22 carbon atoms.)

  More specifically, as a suitable example of aliphatic alcohol, it is 1 type individual, such as cetyl alcohol, stearyl alcohol, and behenyl alcohol, or 2 or more types of combinations.

  In addition, the aliphatic alcohol ester is preferably a compound represented by the following general formula (3).

R ³ —CO—O—R ⁴ (3)

(In general formula (3), R ³ and R ⁴ are independent and may be the same or different, and are hydrocarbon groups having 13 to 22 carbon atoms.)

  More specifically, as a suitable example of aliphatic alcohol ester, they are 1 type individual, or a combination of 2 or more types, such as myristyl myristate, cetyl palmitate, stearyl stearate, and behenyl behenate.

  The aliphatic ether is preferably a compound represented by the following general formula (4).

R ⁵ —O—R ⁶ (4)

(In general formula (4), R ⁵ and R ⁶ are each independent and may be the same or different, and are an alkyl group or an alkenyl group having 8 to 36 carbon atoms.)

  More specifically, preferable examples of the fatty acid ether include one kind of dioctadecyl ether, dibehenyl ether, hexadecyl docosyl ether, octadecyl docosyl ether, octadecyl triacontyl ether, or a combination of two or more kinds.

  Furthermore, the fatty acid monoalkylolamide is preferably a compound represented by the following general formula (5).

^{R 7 -CO-NH-R 8} OH (5)

(In General Formula (5), R ⁷ is a hydrocarbon group having 11 to 21 carbon atoms, and R ⁸ is an ethylene group or a propylene group.)

More specifically, preferred examples of the fatty acid monoalkylolamide include lauric acid monoethanolamide, lauric acid monopropanolamide, lauric acid monoisopropanolamide, myristic acid monoethanolamide, myristic acid monopropanolamide, myristic acid monoisopropanol. Amide, palmitic acid monoethanolamide, palmitic acid monopropanolamide, palmitic acid monoisopropanolamide, stearic acid monoethanolamide, stearic acid monopropanolamide, stearic acid monoisopropanolamide, behenic acid monoethanolamide, behenic acid monopropanolamide, Behenic acid monoisopropanolamide, coconut oil fatty acid monoethanolamide, coconut oil fatty acid monopropanolamide Coconut oil fatty acid monoisopropanolamide, is alone or in a combination of two or more of such palm family plant oil fatty acid monoethanolamide.
Of these, coconut oil fatty acid monoethanolamide, lauric acid monoethanolamide, palmitic acid monoethanolamide and stearic acid monoethanolamide are particularly preferred fatty acid monoalkylolamides.

(2) Melting point Moreover, it is preferable to make the melting point in a water-insoluble aliphatic compound into the value of 35 degreeC or more.
The reason for this is that when the melting point of such a water-insoluble aliphatic compound is less than 35 ° C., it is dissolved by frictional heat when printing at high speed, and it becomes difficult to maintain a predetermined shape. This is because it may be difficult to stably exhibit the anti-scoring effect.
However, if the melting point of such a water-insoluble aliphatic compound becomes excessively high, for example, exceeds 150 ° C., the effect as a lubricant may be significantly reduced.
In addition, if the melting point of such a water-insoluble aliphatic compound becomes excessively high, the melting temperature becomes close to the boiling point of water as a solvent, which may cause the water to boil. Special production such as high-pressure emulsification equipment Equipment may be required.
Therefore, the melting point of the water-insoluble aliphatic compound is more preferably set to a value within the range of 40 to 99 ° C, and further preferably set to a value within the range of 45 to 98 ° C.
In addition, melting | fusing point in a water-insoluble aliphatic compound can be measured based on JISK7196.

(3) Shape In addition, the water-insoluble aliphatic compound as the component (B) is flaky as shown in FIG. 1 or the plan view of FIG. 2 (a) and the side view of FIG. 2 (b), respectively. It is preferable that
More specifically, the average diameter (equivalent circle diameter) of the flaky aliphatic compound is preferably set to a value in the range of 1 to 100 μm.
This is because, when the average diameter of the flaky aliphatic compound is less than 1 μm, it may be difficult to produce stably, or the anti-smelling effect on the printed matter may be significantly reduced. is there.
On the other hand, when the average diameter of the flaky aliphatic compound exceeds 100 μm, it may be difficult to produce the same in a stable manner, or applicability to printed matter may be significantly reduced. That is, when the average diameter of the flaky aliphatic compound exceeds a predetermined value, it floats as a scum on the surface of the supply pan in the coating apparatus or the tank of the surface protective agent for printed matter, and it becomes difficult to apply uniformly. This is because there are cases.
Therefore, the average diameter of the flaky aliphatic compound is more preferably set to a value within the range of 2 to 80 μm, and further preferably set to a value within the range of 3 to 20 μm.
However, regarding the shape of the water-insoluble aliphatic compound as the component (B), the flake-like particles may be agglomerated as a single aggregate.
In addition, the average diameter in the flaky aliphatic compound is an arithmetic average value of the equivalent circle diameter in a state in which the flaky aliphatic compound is oriented in a predetermined plane, and a plurality of the average diameters can be obtained by a microscope in accordance with JIS Z 8901. Can be measured and used as the arithmetic average value, or the data can be processed by an image processing apparatus, and the value obtained therefrom can be used as the arithmetic average value.

Moreover, it is preferable to make the average thickness of the flaky aliphatic compound as the component (B) a value within the range of 0.01 to 10 μm.
The reason for this is that when the average thickness of the flaky aliphatic compound is less than 0.01 μm, it may be difficult to produce stably, or the effect of preventing rusting on the printed matter may be reduced. Because.
On the other hand, when the average thickness of the flaky aliphatic compound exceeds 10 μm, it is considered that the orientation is deteriorated. However, if a considerable amount is not added, the effect of preventing the rust on the printed matter may be decreased. It is.
Therefore, the average thickness of the flaky aliphatic compound is more preferably set to a value within the range of 0.02 to 10 μm, and further preferably set to a value within the range of 0.05 to 5 μm.
The average thickness in the flaky aliphatic compound is the average thickness of the flaky in a state where the flaky aliphatic compound is oriented in a predetermined plane, as shown in the side view of FIG. In accordance with JIS Z 8901, using a laser microscope (Opterics C130 manufactured by Lasertec Co., Ltd.) or the like, a plurality of them can be measured in a diluted state to obtain the arithmetic average value thereof, or the image processing apparatus. By processing the data, the value obtained therefrom can be used as the arithmetic average value.

Furthermore, it is preferable that the average aspect ratio represented by the average diameter / average thickness in the flaky aliphatic compound is a value within the range of 5 to 500.
The reason is that when the average aspect ratio of the flaky aliphatic compound is less than 5, it is considered that the orientation is deteriorated. Because there is.
On the other hand, when the average aspect ratio of the flaky aliphatic compound exceeds 500, it may be difficult to produce stably, or applicability to printed matter may be deteriorated.
Therefore, the average aspect ratio of the flaky aliphatic compound is more preferably set to a value within the range of 10 to 400, and further preferably set to a value within the range of 20 to 300.

(4) Blending amount The blending amount of the water-insoluble aliphatic compound as the component (B) is a value within the range of 0.01 to 10 parts by weight with respect to 100 parts by weight of the water as the component (A). And
This is because, when the blending amount of the water-insoluble aliphatic compound is less than 0.01 parts by weight, it is difficult to effectively exhibit anti-skin properties or the like, and the properties as a lubricant are remarkably high. This is because the paper alignability of the printed matter may be reduced due to excessive reduction or strong friction due to reduction.
On the other hand, when the blending amount of the water-insoluble aliphatic compound exceeds 10 parts by weight, the paper alignment property may be deteriorated due to excessive sliding.
Therefore, the blending amount of the water-insoluble aliphatic compound as the component (B) is preferably set to a value within the range of 0.01 to 5 parts by weight with respect to 100 parts by weight of the water as the component (A). More preferably, the value is in the range of 0.02 to 3 parts by weight.

(5) Manufacturing method 1
Moreover, although it does not restrict | limit especially about the manufacturing method (crystallization) of the flaky aliphatic compound as (B) component, For example, it may manufacture through the following processes (a)-(b). preferable.
(A) A predetermined amount of a water-insoluble aliphatic compound such as a fatty acid glycol ester, a surfactant, and water are mixed and emulsified by heating to a temperature equal to or higher than the melting point of the water-insoluble aliphatic compound, for example, 35 to 99 ° C. The emulsification step (b) using the machine to cool the resulting emulsion to a predetermined temperature (for example, room temperature) to form a flaky aliphatic compound

(6) Manufacturing method 2
Moreover, it is also preferable that it manufactures through the following processes (a ')-(b') regarding the manufacturing method (crystallization) of the flaky aliphatic compound as (B) component.
(A ′) a step of uniformly heating and dissolving a water-insoluble aliphatic compound and a surfactant which is a component (C) described later (b ′) by cooling the heated dissolved material to make the water-insoluble A step of forming a flaky aliphatic compound obtained by eutectic reaction between an aliphatic compound and a surfactant. For example, in the step (a ′), in the step (a ′), the water-insoluble aliphatic compound (B) and (C) After mixing the component surfactant, the mixture of components (B) and (C) is heated in advance to the melting point (for example, 35 to 98 ° C.) or higher of the water-insoluble aliphatic compound (B). It is preferable to dissolve uniformly.
In the step (b ′), the dropping device is used to cool the mixture of the components (B) and (C), the precipitation temperature of the mixture of the components (B) and (C) (the high-temperature liquid melt is cooled). The solution is added dropwise to water in a stirred state adjusted to a temperature lower by 1 to 40 ° C. from the temperature at which the solid precipitates), then cooled to a predetermined temperature (for example, room temperature), and eutectic reacts with the surfactant. It is also preferable to use a flaky aliphatic compound.
That is, by producing in this way, a water-insoluble aliphatic compound can easily have a eutectic structure with a surfactant, and an flaky aliphatic compound having antistatic properties can be efficiently obtained. Can do.

3. (C) Component (1) Type The type of surfactant as component (C) is not particularly limited, and is a cationic surfactant, anionic surfactant, nonionic surfactant, or amphoteric surfactant. Any surfactant in the agent can be used.
However, it is more preferable to use a dialkyldimethylammonium chloride derived from a C10-22 fatty acid as a cationic surfactant or a monoalkyltrimethylammonium chloride derived from a C10-22 fatty acid.
This is because the quaternary ammonium salt type cationic surfactant having such a carbon number not only acts as an emulsifier when emulsifying the water-insoluble aliphatic compound as the component (B). This is because the antistatic performance and the like can be more effectively exhibited.

  Further, as the surfactant as the component (C), more specifically, didecyldimethylammonium chloride, dilauryldimethylammonium chloride, dimyristyldimethylammonium chloride, dipalmityldimethylammonium chloride, dioleyldimethylammonium chloride, Distearyldimethylammonium chloride, dibehenyldimethylammonium chloride, monodecyltrimethylammonium chloride, monolauryltrimethylammonium chloride, monomyristyltrimethylammonium chloride, monopalmityltrimethylammonium chloride, monooleyltrimethylammonium chloride, monostearyltrimethylammonium chloride, mono Behenyltrimethylammoni Alone or in combinations of two or more such Mukuroraido like.

  For dilauryldimethylammonium chloride, dimyristyldimethylammonium chloride, dipalmityldimethylammonium chloride, dioleyldimethylammonium chloride, distearyldimethylammonium chloride, dibehenyldimethylammonium chloride, etc. It is a preferable surfactant because it has an excellent emulsifying function and an antistatic effect.

  Further, monodecyltrimethylammonium chloride, monolauryltrimethylammonium chloride, monomyristyltrimethylammonium chloride, monopalmityltrimethylammonium chloride, monostearyltrimethylammonium chloride, monooleyltrimethylammonium chloride, didecyldimethylammonium chloride, etc. A combination of more than one species is a preferable surfactant because it is excellent not only in an emulsifying function but also in a viscosity reducing function and a surface tension reducing function.

(2) Compounding quantity Moreover, the compounding quantity of surfactant as (C) component shall be a value within the range of 0.01-20 weight part with respect to 100 weight part of water as (A) component.
The reason for this is that when the blending amount of the surfactant is less than 0.01 parts by weight, the dispersibility and emulsification of the water-insoluble aliphatic compound are reduced, and the surfactant is insufficient during emulsification. This is because it may be difficult to adjust the particle diameter of the group compound to a predetermined range or to adjust to a flake shape. As a result, the property as a lubricant in the surface protective agent for printed matter is remarkably lowered, and the paper alignment property of the printed matter may be lowered or excessively charged.
On the other hand, when the amount of the surfactant exceeds 20 parts by weight, the viscosity becomes high and it becomes difficult to dilute with water, or it is excessively applied to the printed material and excessive stickiness on the surface of the printed material is generated. This is because there are cases.
Therefore, the blending amount of the surfactant as the component (C) is preferably set to a value in the range of 0.1 to 15 parts by weight with respect to 100 parts by weight of the water as the component (A). A value in the range of 2 to 10 parts by weight is more preferable.

4). (D) Type of component (1) It is preferable to blend an antistatic agent as component (D).
The reason for this is that by adding an antistatic agent, the stability of the surface protective agent for printed matter is improved, and even when high-speed printing is performed on the printed matter, generation of static electricity is prevented, and the paper is easily removed. This is because alignment can be performed.
Here, as a preferable antistatic agent, 1-hydroxyethyl-1-methyl-2-stearylimidazolinium chloride, 1-hydroxyethyl-1-methyl-2-laurylimidazolinium chloride, 1-hydroxyethyl-1- Methyl-2-tallow imidazolinium chloride, 1-hydroxyethyl-1-methyl-2-soybean imidazolinium chloride, 1-hydroxyethyl-1-methyl-2-coconut oil imidazolinium chloride, dilauryl imidazolium One kind or a combination of two or more kinds such as methosulphate, dioleoylimidazolium methosulphate, and distearyl imidazolium methosulphate may be mentioned.
In addition, it is also possible to use a commercially available compounding drug called an antistatic agent as the component (D).

(2) Blending amount The blending amount of the antistatic agent as the component (D) may vary depending on the purpose and the like, but is usually 100 parts by weight of the water as the component (A). It is preferable to set it as the value within the range of 0.1-20 weight part.
The reason for this depends on the type of antistatic agent, but if the amount of the antistatic agent is less than 0.1 parts by weight, the additive effect may not be exhibited.
On the other hand, when the amount of the antistatic agent is excessively large, for example, when it exceeds 20 parts by weight, it becomes difficult to dilute with water due to high viscosity, or it is excessively applied to the printed matter to form a protective film. This is because there may be a problem that the surface is sticky.
Accordingly, the blending amount of the antistatic agent as the component (D) is more preferably set to a value within the range of 0.5 to 15 parts by weight with respect to 100 parts by weight of the water as the component (A). More preferably, the value is within the range of 10 parts by weight.

5. (E) Type of component (1) As the component (E), it is also preferable to add various additives to the surface protective agent for printed matter.
As such an additive, for example, a surfactant (however, a surfactant other than the surfactant as the component (C), or the same surfactant as the component (C) for later addition) is used. .), Emulsification aids, antifoaming agents, antiseptics, antioxidants, colorants, conductivity-imparting agents, viscosity modifiers, surface tension modifiers, protective colloid agents, pH modifiers, lubricants, anti-sliding agents, etc. A single type or a combination of two or more types can be mentioned.

In particular, since the handling and storage management of the surface protective agent for printed matter becomes easy, and it can be applied to the printed matter more stably and uniformly, the viscosity modifier is mentioned as a suitable additive.
In other words, the surface protective agent for printed matter tends to become excessively high or low in viscosity due to changes in ambient temperature, changes in the type or blending amount of the surfactant, etc., but by adding a viscosity modifier, This is because the viscosity when using the surface protective agent for printed matter can be adjusted to a value within an appropriate range.
The type of viscosity modifier is not particularly limited. For example, as a viscosity modifier (thickening agent) for reducing the viscosity, one kind of sodium sulfate, potassium sulfate, or the like may be used alone, or two or more kinds may be used. Combinations are listed.

(2) Blending amount In addition, the blending amount of various additives as the component (E) may be changed depending on the purpose and the like, but usually, with respect to 100 parts by weight of the water as the component (A), A value within the range of 0.001 to 30 parts by weight is preferable.
The reason for this is that although depending on the type of the additive, if the amount of the additive is less than 0.001 part by weight, the additive effect may not be exhibited.
On the other hand, the compounding amount of various additives becomes excessively large, for example, when it exceeds 30 parts by weight, it becomes difficult to dilute with water due to high viscosity, or it is excessively applied to the printed matter to form a protective film. This is because there may be a problem that the surface is sticky.
Therefore, the amount of the additive as the component (E) is more preferably 0.003 to 20 parts by weight with respect to 100 parts by weight of the water as the component (A). More preferably, the value is in the range of 005 to 10 parts by weight.

6). Embodiment of surface protective agent for printed matter When the surface protective agent for printed matter is diluted with a predetermined amount of water or the like, that is, it is preferably an embodiment as a stock solution, or water or the like is used. Embodiments that are used as they are without addition are also preferred.
As for the viscosity of the surface protective agent for printed matter in the case of the stock solution, the viscosity of the surface protective agent for printed matter as the diluent is easy to adjust, so that the measurement temperature is 25 ° C., and it is within the range of 20 to 4000 mPa · sec. It is preferable to set a value, and it is more preferable to set a value within the range of 30 to 3000 mPa · sec.
Furthermore, regarding the viscosity of the surface protective agent for printed matter in the case of a diluting solution, that is, the surface protective agent for printed matter used for carrying out the surface protecting method for the printed matter, a range of 0.1 to 1000 mPa · sec at a measurement temperature of 25 ° C. The value is preferably in the range of 0.5 to 300 mPa · sec, more preferably in the range of 1 to 100 mPa · sec.

Moreover, when the surface protective agent for printed matter is an embodiment as a diluting solution containing a predetermined amount of water in advance, the surface tension is preferably set to a value in the range of 32 to 45 mN / m.
The reason for this is that by limiting the surface tension in this way, the affinity with various printed materials becomes good and a uniform surface protective film can be formed.

And in order to control to such a value of surface tension, it is preferable to take the following measures.
1) A surfactant such as acetylenol or a compound obtained by adding ethylene oxide thereto is added.
2) A nonionic surfactant such as a compound obtained by reacting ethylene oxide or propylene oxide with alkyl alcohol is added.
3) A cationic surfactant such as dialkyldimethylammonium chloride derived from a fatty acid having 10 to 22 carbon atoms is added.
4) A cationic surfactant such as monoalkyltrimethylammonium chloride derived from a fatty acid having 10 to 22 carbon atoms is added.
That is, a predetermined amount of the same or similar surfactant is further blended together with the surfactant which is the component (C) that has already been blended, and the surface tension of the surface protective agent for printed matter is adjusted to a value within a predetermined range. Is preferred.

[Second Embodiment]
2nd Embodiment is the surface protection method of the printed matter using the surface protective agent for printed matter of 1st Embodiment, Comprising: The surface protection of the printed matter characterized by including following process (i)-(iii) Is the method.
(I) A printing process in which printing is performed on a printing medium using a printing ink to obtain a printed material. (Ii) A coating process in which a surface protective agent for the printed material is applied to the surface of the printed material. (Iii) A surface protective agent for the printed material. Step of Forming a Surface Protection Member by Drying the Surface Hereinafter, with reference to FIGS. 3 (a) to 3 (c) and FIG. 4, a surface protection method using a surface protective agent for printed matter on the surface of the printed matter is specifically described. Explained.

1. Surface protective agent for printed matter Since the content can be the same as that described for the surface protective agent for printed matter (dilution type) of the first embodiment, further explanation is omitted here.

2. Step (i) Step (i) is a printing step for obtaining a printed matter 5 by performing predetermined printing with the printing ink 3 on a printing medium 4 using a printing device, as shown in FIG. .
The mode of the printing apparatus that performs the step (i) is not particularly limited. For example, the rotary offset printing apparatus 100 illustrated in FIG. 4, the gravure printing apparatus, the screen printing apparatus, or the inkjet printing apparatus. It is preferable to use at least one of the above.

3. (Ii) Step (ii) The step is a coating step of applying a surface protective agent 2 ′ for printed matter to the surface of the printed matter 5, as shown in FIG.
Here, the coating amount of the protective agent 2 ′ for printing can be changed according to the substrate or use of the printed matter, but it is usually preferable to set a value within the range of 50 to 1000 mg / m ² .
The reason for this is that when the amount of the printing protective agent applied is less than 50 mg / m ² , static electricity is likely to be generated in the printed matter, and the anti-stress effect on the printed matter may not be exhibited.
On the other hand, when the coating amount of the printing protective agent exceeds 1000 mg / m ² , the stickiness of the surface becomes large, and papers tend to stick to each other or wrinkles easily occur.
Therefore, it is more preferable to set the application amount of the printing protective agent a value within the range of 100 to 600 mg / m ^2, still more preferably a value within the range of 150~500mg / m ^2.

And in the rotary offset printing apparatus 100 as shown in FIG. 4, the surface protective agent for printed matter of the present invention has a feature that it easily exhibits a predetermined anti-scoring effect and the like.
That is, the rotary offset printing apparatus 100 typically includes a paper feeder 10, an infeed machine 20, a printing unit 30, a dryer 40, a web cooler 50, a surface treatment apparatus 60, a folding machine. A cutting machine (Homer) 80 and a stacker 90 are provided. The web cooler 50 includes a cooling roller 50a and a nozzle 50b.
Here, a web as a printing medium wound in a roll shape, for example, a paper roll, is disposed in the paper feeder 10 and is a constituent member for continuously feeding it. The infeed machine 20 is a structural member for accurately guiding a web as a print medium to a route at a predetermined position.
Further, the printing unit 30 includes an offset print head, and is a constituent member for applying a predetermined printing ink to a predetermined place of a web as a printing medium.
Moreover, the dryer 40 is a structural member for carrying out hot air drying of the printing ink printed on the web as a printing medium, and setting it as printed matter.
The web cooler 50 is composed of a cooling roller 50a and a nozzle 50b for applying a humidifying agent to the web. The web cooler 50 is a component for cooling the printed matter and applying the required moisture. is there.
The folding machine 80 is a structural member for cutting and folding a printed matter of a predetermined size, for example, cutting the web into B3 size and folding it in half.
Furthermore, the stacker 90 is a constituent member for bundling paper sheets that are cut by cutting a printed material into a predetermined size and arranged in layers for each specified number of sheets.

And the surface treatment apparatus 60 is a structural member which is located between the web cooler 50 and the folding machine 80, for example, and applies the surface protective agent (dilution liquid) for printed matter of this invention.
More specifically, although an enlarged view is shown in FIG. 4, the surface protection agent supply pans 61a and 61b, the application rolls 64a and 64b, the switching valve 65, the pumping pump 63, and the surface for the printed material. The tank is composed of a protective agent tank 62 and a circulation path therebetween.
That is, the printed surface protective agent pumped up from the printed material surface protective agent tank 62 by the pumping pump 63 is supplied to either or both of the supply pans 61a and 61b via the switching valve (flow rate adjusting valve) 65. The liquid is sent to Next, the coating rolls 64a and 64b are applied to the surface (front surface and / or back surface) of the printed material moving at a line speed of 100 to 800 m / min, for example.

According to the surface protective agent for printed matter of the present invention, water as component (A) evaporates or permeates in the thickness direction of the printed matter instantly when applied to the surface of the printed matter. The surface aliphatic compound remains on the surface of the printed material, and a surface protection member is formed. In other words, the effect of the surface protection of the printed matter is exhibited by the action of the surface protection member protruding from the surface.
On the other hand, the surface protective agent for printed matter is basically constantly stirred, and the surface protective agent for printed matter that has not been used in the coating rolls 64a and 64b passes through another circulation path from the supply pans 61a and 61b, and the printed matter. It is returned to the tank 62 for the surface protective agent.

4). (Iii) Process Next, the (iii) process is a formation process which forms the surface protection member 2 by drying the surface protective agent for printed matter, as shown in FIG.
Here, it is preferable to set the average thickness (average height) of the surface protection member to a value within the range of 0.01 to 10 μm.
This is because, when the average thickness of the surface protective member is less than 0.01 μm, static electricity is likely to be generated in the printed matter, and the effect of preventing the rust on the printed matter may be significantly reduced. is there.
On the other hand, when the average thickness of such a surface protective member exceeds 10 μm, the stickiness of the surface becomes large, and papers tend to stick to each other or wrinkles are likely to occur.
Therefore, the average thickness of the surface protection member is preferably set to a value within the range of 0.02 to 10 μm, and more preferably set to a value within the range of 0.05 to 5 μm.
In addition, the average thickness (average height) in the surface protection member can be measured by laser microscopy, or the data is processed by an image processing apparatus, and the value obtained therefrom is calculated as an arithmetic average value. can do.

In addition, the surface protective agent for printed matter of the present invention forms a predetermined surface protective member, and even when high-speed printing is performed for a long time using a printing apparatus, it is capable of preventing rust damage on the obtained printed matter. Can be effectively demonstrated.
Then, because of the high-speed printing, surplus moisture is naturally dried, and the surface protection member is substantially formed on the printed matter (web). Therefore, it is not necessary to provide a drying device after the surface treatment device. be able to.

  Hereinafter, the present invention will be described in detail with reference to examples. Needless to say, the scope of the present invention is not limited to the following description without any particular reason.

[Example 1]
1. Preparation of surface protective agent for printed matter In a container equipped with an emulsifying stirrer, disodium monostearate distearate as fatty acid compound 1 in Table 1 with respect to 100 parts by weight of water (melting point: 63 ° C., aliphatic in Table 1 1 part by weight of compound 1) and a predetermined surfactant mixture as surfactant composition 1 (distearyldimethylammonium chloride: dioleyldimethylammonium chloride: didecyldimethylammonium chloride = 10: 65: 8 parts by weight of 25% by weight of the blended composition) was accommodated, and then the temperature was raised to 80 ° C. while stirring to prepare an emulsion.
Next, the obtained emulsion was cooled to a temperature not higher than the temperature at which crystals were produced (for example, 30 ° C. or lower) to produce a flaky aliphatic compound, which was used as the surface protective agent (stock solution) for printed matter of Example 1. .
Next, in conducting evaluation as a surface protective agent for printed matter, 400 parts by weight of water is further added to the obtained surface protective agent (stock solution) for printed matter, and stirred until uniform to obtain a printed matter for evaluation. Surface protection agent (diluent).
That is, as a blended composition of the obtained surface protective agent (diluted solution) for printed matter, 0.2 part by weight of fatty acid compound 1 (monoethylene glycol distearate) per 100 parts by weight of water, a surfactant composition 1 (mixture) is a ratio of 1.6 parts by weight.

2. Evaluation of surface protective agent for printed matter (1) Shape evaluation (Evaluation 1)
The shape of the obtained flaky aliphatic compound was evaluated. That is, the surface protective agent for printed matter (stock solution) obtained was diluted about 3000 times with water and then observed with an optical microscope (1000 times magnification). Evaluated.
○: The state observed as a uniform flake shape as a whole or almost entirely.
(Triangle | delta): The state by which a flake shaped object and an amorphous solid particle are observed mixedly.
X: The state which is not indefinite or crystallized, or a solid particle cannot be confirmed.

(2) Glossiness evaluation (Evaluation 2)
The glossiness of the flaky aliphatic compound contained in the obtained surface protective agent for printed matter (stock solution) was evaluated.
That is, the surface protective agent (stock solution) for printed matter was diluted about 10 times with water to obtain a diluted product. Next, 80 mL of the obtained dilution was collected in a 100 mL beaker, visually observed while stirring with a spatula, and the glossiness of the flaky aliphatic compound was evaluated according to the following criteria.
○: A glittering glossiness is easily observed along the flow.
(Triangle | delta): There exists turbidity and it will be observed when the lustrous luster is observed.
X: It is white or translucent, and even if it stirs with a spatula, a flow is hard to confirm.

(3) Evaluation of cosmetic resistance (Evaluation 3)
The cosmetic resistance of the surface protective agent for printed matter (diluted solution) was evaluated. That is, a predetermined printed matter was printed at high speed using the web offset printing apparatus 100 shown in FIG. 4 under the condition of a rotational speed of 800 rpm. At that time, a surface protective agent (diluted solution) for printed matter is applied to the surface of the printed matter, and the surface of the obtained printed matter is visually observed to determine whether or not there is a scratch on the surface of the printed matter. Evaluated.
(Double-circle): Even if it printed continuously for 10 hours or more, the scratches were not observed in the printed matter.
A: No scratches on the printed matter were observed even after continuous printing for 5 hours or more.
Δ: No scratches were observed on the printed matter even after continuous printing for 1 hour or longer.
X: Scratch damage was observed on the printed matter during continuous printing for less than 1 hour.

(4) Evaluation of antistatic properties (Evaluation 4)
The antistatic property of the surface protective agent (diluted solution) for printed matter was evaluated. That is, the electrostatic pressure is measured on the surface of the printed material using an electrostatic potential measuring device (Statidon DZ-3 made by Sisid Electrostatic) immediately before the homer of the offset rotary press, and antistatic properties are obtained in accordance with the following criteria. evaluated.
A: The measured value is 1 kV or less.
○: The measured value is 5 kV or less.
(Triangle | delta): A measured value is 20 kV or less.
X: The measured value exceeds 20 kV.

(5) Evaluation of paper alignment (Evaluation 5)
The paper alignability of the surface protective agent for printed matter (diluent) was evaluated. That is, using a stacker, the printed material cut into a predetermined size and fold-processed is aligned and bundled in 1000 pieces, and 10 arbitrary bundles are taken out, the state is visually observed, and the following standards are met. Along the paper alignment was evaluated.
(Double-circle): The printed matter which jumped out in 10 bundles is 0.
◯: Out of 10 bundles, the number of printed products jumped out is 1 bundle or less.
(Triangle | delta): The printed matter which jumped out in 10 bundles is 2 bundles or less.
X: The printed matter jumped out of 10 bundles is 3 or more bundles.

[Example 2]
In Example 2, the influence of the type of the water-insoluble aliphatic compound in the compounding ingredients of Example 1 was examined.
That is, as shown in Table 1, in the same manner as in Example 1, except that monoethylene glycol distearate as the aliphatic compound 1 was replaced with stearyl stearate (melting point: 59 ° C.) as the aliphatic compound 2. A surface protective agent for printed materials was prepared and evaluated.
In addition, when evaluating as a surface protective agent for printed matter, 400 parts by weight of water is further added to the obtained surface protective agent (stock solution) for printed matter, and stirred until uniform to obtain a printed matter for evaluation. Surface protection agent (diluent).
Therefore, the blended composition of the obtained surface protective agent (diluted solution) for printed matter is 0.2 part by weight of aliphatic compound 2 (stearyl stearate) with respect to 100 parts by weight of water, and surfactant composition 1 ( (Mixture) is 1.6 parts by weight.

[Examples 3 to 6]
In Examples 3 to 6, while limiting the type of water-insoluble aliphatic compound (monoethylene glycol distearate), the effect of the blending amount was examined in the same manner as in Example 1.
That is, the blending amount of the water-insoluble aliphatic compound is 0.1 parts by weight in Example 3, 1 part by weight in Example 4, and 3 parts by weight in Example 5 with respect to 100 parts by weight of water. In Example 6, the amount was 5 parts by weight.
In Examples 3 to 6, surfactant composition 2 (distearyldimethylammonium chloride: dioleyldimethylammonium chloride: didecyldimethylammonium chloride = 5: 70: 25% by weight) was added to 100 parts by weight of water. On the other hand, 15 parts by weight was blended.
In addition, when evaluating as a surface protective agent for printed matter, 400 parts by weight of water is further added to the obtained surface protective agent (stock solution) for printed matter, and stirred until uniform to obtain a printed matter for evaluation. Surface protection agent (diluent).

[Examples 7 to 10]
In Examples 7 to 10, while limiting to the type of water-insoluble aliphatic compound (monoethylene glycol distearate) and the blending amount (1 part by weight), the effect of the type of surfactant and the blending amount A surface protective agent for printed materials was prepared and examined in the same manner as in 1.
That is, in Examples 7 to 8, as the surfactant composition 3, a predetermined surfactant mixture (distearyldimethylammonium chloride, dioleyldimethylammonium chloride, monostearyltrimethylammonium chloride = 10: 65: 25% by weight) ), And the blending amount was 5 parts by weight in Example 7 and 20 parts by weight in Example 8 with respect to 100 parts by weight of water, and a surface protective agent (stock solution) for printed matter was prepared.
Moreover, in Examples 9-10, as surfactant composition 4, a predetermined surfactant mixture (distearyldimethylammonium chloride, dioleyldimethylammonium chloride, dilauryldimethylammonium chloride = 10: 65: 25% by weight) ) Was used, and the blending amount was 5 parts by weight in Example 9 and 20 parts by weight in Example 10 with respect to 100 parts by weight of water, and a surface protective agent (stock solution) for printed matter was prepared.
In addition, when evaluating as a surface protective agent for printed matter, 400 parts by weight of water is further added to the obtained surface protective agent (stock solution) for printed matter, and stirred until uniform to obtain a printed matter for evaluation. Surface protection agent (diluent).

[Examples 11 to 14]
In Examples 11 to 14, the production method was changed corresponding to Examples 1, 2, 7, and 9, and the water-insoluble aliphatic compound was heated and melted and mixed together with the surfactant in advance. A surface protective agent for printed matter was prepared and evaluated in the same manner as in Example 1 except that a production method for producing a flaky aliphatic compound having a eutectic structure by being introduced into the substrate and cooling was employed.
That is, taking Example 11 as an example, in a container equipped with a stirring device and a dropping device, 1 part by weight of monoethylene glycol distearate (melting point: 63 ° C.) as a fatty acid glycol ester, and surfactant composition 1 As a predetermined surfactant mixture (distearyldimethylammonium chloride, dioleyldimethylammonium chloride, didecyldimethylammonium chloride = 10: 65: 25% by weight) at a ratio of 8 parts by weight (that is, 100 parts by weight of fatty acid glycol ester) The surfactant composition 1 was housed at a ratio of 800 parts by weight), and the temperature was raised to 80 ° C. while stirring them to make the raw material a uniform solution.
Next, in another tank with a stirrer, 100 parts by weight of water is stored, heated to 45 ° C., the above homogeneous solution is added dropwise with stirring, and further cooled to room temperature 25 ° C. with stirring. A flaky aliphatic compound having a eutectic structure with a surfactant was produced, and used as a surface protective agent (stock solution) for printed matter of Example 11.
Next, in conducting evaluation as a surface protective agent for printed matter, 400 parts by weight of water is further added to the obtained surface protective agent (stock solution) for printed matter, and stirred until uniform to obtain a printed matter for evaluation. Surface protection agent (diluent).
In other Examples 12, 13, and 14, a surface protective agent for printed matter (stock solution) was prepared in the same manner as in Example 11, and this was diluted with water and evaluated as a surface protective agent for printed matter (diluted solution). did.

[Example 15]
In Example 15, the influence of the blending amount of the antistatic agent as the component (D) was examined.
That is, in Example 15, using the surface protective agent for printed matter (stock solution) prepared in Example 7, 400 parts by weight of water and geo as an antistatic agent with respect to the surface protective agent for printed matter (stock solution). 5 parts by weight of Ray Rui midazolium methosulfate was added and stirred until uniform to obtain a surface protective agent (diluent) for printed matter, and evaluated in the same manner as in Example 1.
The blended composition of the obtained surface protective agent (diluent) for printed matter was 0.2 parts by weight of an aliphatic compound and 1 part by weight of a quaternary cationic surfactant with respect to 100 parts by weight of water. The inhibitor is 1 part by weight.

[Examples 16 to 17]
In Examples 16-17, as one of the additive which is (E) component, it considers about the influence of the mixing | blending of a viscosity modifier (thickening agent), and the influence by the dilution rate of the surface protective agent for printed materials, respectively. did.
That is, in Examples 16 to 17, the surface protective agent for printed matter (stock solution) prepared in Example 6 was used, and the viscosity modifier (thinning) was added to 100 parts by weight of the surface protective agent for printed matter (stock solution). Sodium sulfate as an agent) was blended in a proportion of 0.01 parts by weight.
Next, in Example 16, the surface protective agent for printed matter (stock solution) of Examples 16 to 17 was used as it is as the surface protective agent for printed matter for evaluation. In Example 17, the surface for printed matter of Examples 16 to 17 was used. 67 parts by weight of water was further added to the protective agent (stock solution) and stirred until uniform to obtain a surface protective agent for printed matter (diluent) for evaluation.
In Example 16, the surface protective agent for printed matter for evaluation was 5 parts by weight of an aliphatic compound, 15 parts by weight of a surfactant composition, and a viscosity modifier (thickening agent) with respect to 100 parts by weight of water. ) Was a blending ratio of 0.01 parts by weight,
In Example 17, the mixing ratio of 3 parts by weight of the aliphatic compound, 9 parts by weight of the surfactant composition, and 0.006 parts by weight of the viscosity modifier (thickening agent) with respect to 100 parts by weight of water. Met.

[Comparative Example 1]
In Comparative Example 1, the effect of the type of the water-insoluble aliphatic compound was examined in the same manner as in Example 1.
That is, the surface for printed matter was the same as in Example 1 except that monoethylene glycol distearate as the water-insoluble aliphatic compound was changed to tetraethylene glycol distearate (melting point: 40 ° C.) as the water-soluble aliphatic compound. A protective agent was created and evaluated.
The composition of the printed surface protective agent (diluent) for evaluation was such that tetraethylene glycol distearate was 0.2 parts by weight and cationic surfactant was 1.6 parts by weight with respect to 100 parts by weight of water. there were.

[Comparative Example 2]
In Comparative Example 2, the effect of not using a water-insoluble aliphatic compound was examined in the same manner as in Example 1.
That is, in the surface protective agent for printed matter, a surface protective agent for printed matter was prepared and evaluated in the same manner as in Example 1 except that monoethylene glycol distearate as a water-insoluble aliphatic compound was not used.
In addition, the compounding composition of the surface protective agent (dilution liquid) for printed matter for evaluation was 1.6 parts by weight of the cationic surfactant with respect to 100 parts by weight of water.

Evaluation 1: Evaluation of shape of aliphatic compound Evaluation 2: Evaluation of glossiness Evaluation 3: Evaluation of anti-cosmetic property Evaluation 4: Evaluation of antistatic property Evaluation 5: Evaluation of paper alignment

According to the surface protective agent for printed matter of the present invention, water dispersion comprising water as the component (A), a water-insoluble aliphatic compound as the component (B), and a surfactant as the component (C). Even if the printing speed of the printing device is high-speed rotation or when printing for a long time without deactivating the platinum catalyst, etc. Etc. can now be demonstrated.
Moreover, according to the surface protection method for a printed matter of the present invention, water as the component (A), a predetermined water-insoluble aliphatic compound as the component (B), and a surfactant as the component (C), By protecting the surface of the printed matter using the surface protective agent for printed matter as an aqueous dispersion containing, a predetermined anti-scoring property and paper alignment property for the printed matter are exhibited without deactivating the platinum catalyst or the like. I was able to do it.
Therefore, the surface protective agent for printed matter and the method for protecting the surface of printed matter of the present invention can be widely used in the technical field of printing such as an offset rotary printing device and a gravure printing device.

Claims (8)

A surface protective agent for printed matter, which is an aqueous dispersion containing the following components (A) to (C).
(A) Water: 100 parts by weight (B) At least one water-insoluble aliphatic compound selected from the group consisting of fatty acid glycol ester, aliphatic alcohol, aliphatic alcohol ester, aliphatic ether, and fatty acid monoalkylolamide : 0.01 to 10 parts by weight (C) Surfactant: 0.01 to 20 parts by weight The surface protective agent for printed matter according to claim 1, wherein the melting point as the component (B) is 35 ° C. or more. The surface protective agent for printed matter according to claim 1 or 2, wherein the water-insoluble aliphatic compound as the component (B) is in the form of flakes. The surfactant as the component (C) is a dialkyldimethylammonium chloride derived from a fatty acid having 10 to 22 carbon atoms as a cationic surfactant, or a monoalkyltrimethylammonium derived from a fatty acid having 10 to 22 carbon atoms. The surface protective agent for printed matter according to any one of claims 1 to 3, further comprising chloride. The component (D) further contains an antistatic agent, and the content of the component (D) is in the range of 0.1 to 20 parts by weight with respect to 100 parts by weight of water as the component (A). It is set as a value, The surface protective agent for printed matter as described in any one of Claims 1-4 characterized by the above-mentioned. As a component (E), a viscosity modifier is further contained, and the content of the component (E) is within a range of 0.001 to 30 parts by weight with respect to 100 parts by weight of water as the component (A). The surface protective agent for printed matter according to any one of claims 1 to 5, wherein The water-insoluble aliphatic compound as the component (B) and the surfactant as the component (C) react in advance to have a eutectic structure. A surface protective agent for printed matter according to claim 1. (A) At least one water-insoluble selected from the group consisting of (B) fatty acid glycol ester, aliphatic alcohol, aliphatic alcohol ester, aliphatic ether, and fatty acid monoalkylolamide with respect to 100 parts by weight of water A method for protecting the surface of a printed material using a surface protective agent for a printed material as an aqueous dispersion containing 0.01 to 10 parts by weight of an aliphatic compound and 0.01 to 20 parts by weight of a surfactant (C). A method for protecting a surface of a printed material, comprising the following steps (i) to (iii):
(I) A printing process in which printing is performed on a printing medium using a printing ink to obtain a printed material. (Ii) A coating process for applying the surface protective agent for the printed material to the surface of the printed material. (Iii) For the printed material. Formation process of drying the surface protective agent to form a surface protective member