KR101053272B1 - Solvent composition for newspaper ink and its manufacturing method - Google Patents

Abstract

The present invention relates to a solvent composition for newspaper ink and a method for manufacturing the same, and a hydrocarbon having a distillation range of 280 ° C. to 400 ° C., which is produced by distillation from LGO (Light Gas Oil) or VGO (Vacuum Gas Oil) oil produced in the petroleum process. It is characterized by including a high boiling aromatic compound produced from the solvent and the fraction of the catalytic reforming process.

The solvent composition according to the present invention has excellent permeability and fluidity than newspaper ink solvents, which are used as solvents in the production of newspaper ink, and have been produced as lubricating base oil by-products that have been subjected to a solvent separation process. There is an advantage to escape the supply and demand status.

Newspaper Ink Solvents, Hydrocarbon Solvents, Lubricant Oil By-Products, High Boiling Point Aromatic Compounds

Description

Solvent composition for newspaper ink and preparation method thereof

TECHNICAL FIELD This invention relates to the solvent composition for newspaper inks, and its manufacturing method. More specifically, the present invention relates to a solvent composition for newspaper ink, which is excellent in permeability and fluidity, and which can be prepared from LGO or VGO oil by peeling from a lubricating base oil which has been subjected to a conventional solvent dewaxing process, and a method of manufacturing the same.

In general, the printing ink is transferred from plate to paper by a printing machine to be printed, and therefore, has to have physical properties such as flow, viscosity, tack, and transition, and paper and other blood. When printed on a printed material, it should not be dropped even if it is quickly set, dried and in contact with another object.

In particular, in the case of newspaper inks, resins, pigments, solvents, vegetable oils and various additives are mixed to have proper fluidity and performance, and an image is printed on a rolled solvent for newspaper by offset printing. In the method of preparing the newspaper ink, first, a resin, vegetable oil, and a solvent are mixed and heated to prepare a colorant (Vehicle, Varnish), and then mixed with a pigment and an additive and uniformly dispersed.                         

Here, the colorant has a meaning of a carrier, a medium, and mixes and disperses well with the pigment to impart fluidity to the ink, and serves to transfer the pigment to paper and to quickly fix the pigment on the paper after printing.

In particular, the solvent, one component of the colorant, is an important factor in determining the appropriate viscosity, flow characteristics, and drying characteristics. Solvents dissolve the colorant components, such as resins and vegetable oils, and assist in wetting or dispersing the pigments. In addition, evaporation of solvents or penetration (absorption) on the porous printing surface is a major factor controlling the drying action of the ink, and is also associated with stability on the printing press. However, the smell of the solvent may remain during operation or even after printing, so that the user may feel a sense of rejection.

As solvents for newspaper ink, high boiling point hydrocarbons or lubricating base oils may be generally used. Recently, a commonly used solvent includes by-products from a solvent dewaxing lubricating base oil process. This is due to rosin-modified phenolic resins used in newspaper ink because of higher leadene and aromatic components in solvent dewaxing process lubricant base oils in composition analysis according to ASTM 3238 than high boiling point hydrocarbon solvents produced from diesel fuel oil or other catalysts. This is because the solvent has excellent dissolving ability and mild odor. In the case of base oil converted by diesel oil or catalyst, the relative content of aromatic and naphthene components having good solubility due to normal paraffin removal or conversion to isoparaffin is used for solvent extraction. It has lower solubility in rosin-modified phenol resins than solvent dewaxed base oil from which normal paraffin has been removed. However, solvent dewaxing base oil is unstable in supply and demand due to the limited production process.In this process, no additional process construction is being carried out due to production yield and the issue of volatile organic compounds due to the use of extracting solvents. In the future, the supply of high-boiling newspaper ink solvents using base oil as a solvent dewaxing process will not be smooth.

To solve this problem of supply and demand, development of a new solvent and change of resin for ink are required. Rosin-modified phenol resin is superior to other alternatives such as petroleum-based resin in ink performance such as adhesion, printability and glossiness. The development of new solvents is the most economical solution because it is difficult to be replaced and economic problems such as construction of new process for producing new resin are large.

Since these new solvents have excellent compatibility with rosin-modified phenolic resins, should not increase the final ink performance or be damaged compared to existing products, and should be economical, it is essential to develop a composition and a method of manufacturing the same to give such performances. .

Accordingly, in the present invention, in consideration of the problems of the prior art, the solvent composition for newspaper inks to enhance the dissolving power of the high boiling point hydrocarbon solvent produced by distillation from LGO or VGO oil in the petroleum process, and to improve the low temperature stability, odor and color It was possible to obtain, the present invention was completed based on this.

Accordingly, it is an object of the present invention to provide a solvent composition for newspaper ink and a method for producing the same, which are excellent in permeability and dissolving power, have low temperature stability, odor and color, and can be produced from LGO or VGO oil.                         

Another object of the present invention is to provide a solvent composition for newspaper ink, which is economical and has excellent compatibility with resins, and a method for producing the same.

According to one aspect of the present invention for achieving the above and other objects:

50 to 80% by weight of a hydrocarbon solvent in the distillation range 280 ℃ to 400 ℃ produced from LGO or VGO fraction in the petroleum process, and 20 to 50% by weight of a high boiling aromatic compound produced from the oil of the catalytic reforming process, There is provided a solvent composition for newspaper ink, wherein the irritating odor is removed through the clay.

According to another aspect of the present invention for achieving the above and other objects:

(a) 50 to 80% by weight of a hydrocarbon solvent having a distillation range of 280 ° C to 400 ° C from the LGO or VGO fraction in the petroleum process, and 20 to 50% by weight of the high boiling aromatic compound produced from the fraction in the catalytic reforming process. step; And

(b) contacting the mixture with 1 to 10% by weight of clay;

There is provided a method for producing a solvent for newspaper ink, comprising a.

Hereinafter, the present invention will be described in detail.

As described above, according to the present invention, a high boiling point hydrocarbon solvent and a high boiling point aromatic compound produced from LGO or VGO in the petroleum process are blended in a specific ratio, and treated with clay to lubricate the existing solvent dewaxing process. Provided are a solvent composition for a newspaper ink, which is superior in fluidity and permeability, and which can be used alternatively, compared to a solvent for a newspaper ink prepared only by oil by-product, and a method of manufacturing the same.

The solvent composition for newspaper ink according to the present invention is a high boiling aromatic compound which is converted and distilled and purified through a contact reforming process with 50 to 80% by weight of a hydrocarbon solvent having a distillation range of 280 ° C. to 400 ° C. produced from LGO or VGO oil in the petroleum process. 20 to 50 weight percent, and the aniline point of the final composition is in the range of 68 to 75 ° C.

The aniline point is the lowest temperature at which hydrocarbons completely dissolve in the same volume of aniline and is used as a way of indicating the solubility of mineral oils and has a linear correlation with the composition of the hydrocarbon solvent.

In the solvent composition for newspaper ink according to the present invention, the aniline point is adjusted to 68 to 75 ° C. by blending the high boiling point aromatic compound in the high boiling point hydrocarbon solvent at 400 ° C. in the distillation range 280 purified from LGO or VGO fraction. From this, compatibility with resin can be ensured.

The hydrocarbon solvent is a solvent produced from LGO or VGO fraction having a distillation range of 280 ° C to 400 ° C, preferably 290 ° C to 360 ° C, and includes paraffin, naphthene, aromatic compounds, and the like. It is preferable that the distillation range of the ink solvent has the same range as that of the hydrocarbon solvent in order to obtain.

The amount of hydrocarbon solvent purified from the LGO or VGO fraction in the preparation of the desired final ink solvent is from 50 to 80% by weight and from 20 to 80% by weight of the high boiling aromatic components described above. If the content of the hydrocarbon solvent purified from the LGG or VGO is less than 50% by weight, the flowability of the ink is excessively large, and if it exceeds 80% by weight, the storage stability or gloss is poor.

The high boiling aromatic compound is a substance having 12 to 20 carbon atoms, and has a distillation range similar to that of the hydrocarbon solvent distilled and purified from the LGO or VGO fraction. As the high boiling aromatic compound, an aromatic compound having a distillation range of 280 ° C. to 400 ° C. prepared from the catalytic reforming process fraction may be used, or phenyl xylyl ethane obtained through synthesis may be used.

Here, the amount of the high boiling aromatic compound is 20 to 50% by weight. If the amount of the high boiling point aromatic compound is less than 20% by weight, the storage stability and gloss are inferior. If the amount of the high boiling point aromatic compound is more than 50% by weight, the flowability becomes excessive and it is difficult to have an appropriate tag value or viscosity.

On the other hand, since the high boiling point aromatic component may have a slight specific smell and may cause a rejection to ink manufacturers and users, the high boiling point aromatic component is subjected to an odor removal process using clay. That is, the solvent composition is contacted with clay to remove odor generating components.

At this time, the process may be performed in a batch or continuous manner, when the continuous is carried out so that the LHSV is 1 ~ 5hr ^-1 .

Here, the amount of the clay is preferably 1 to 10% by weight based on the weight of the solvent composition to achieve the maximum odor removal effect compared to economics. In addition, the space velocity LHSV is preferably 1 to 5 hr ⁻¹ , but when the LHSV is less than 1 hr ⁻¹ , economic efficiency may be low, and when the LHSV exceeds 5 hr ⁻¹ , an odor improving effect may be less.

In addition to the solvent composition for newspaper ink of the present invention as described above, when using raw materials produced from LGO or VGO oil during the petroleum process, low temperature stability is lowered. Therefore, polymethacrylates and styrene-based polyesters are used for winter use. Styrene-based polyesters, crosslinked alkyl-phenols and at least one additive selected from the group consisting of alkylated naphthalenes may optionally be further added. Here, the amount of the additive is typically 0.02 to 0.10% by weight based on the weight of the solvent composition so as to obtain the desired properties to the maximum within the range does not affect other intrinsic properties.

When the solvent composition thus obtained is used as a solvent for newspaper inks to prepare a colorant and / or ink, the dissolving power in commercial resins such as rosin-modified phenolic resins is enhanced, and compared with the ink using the lubricant base oil of the existing solvent dewaxing process. It is excellent in fluidity and permeability, and other performances can produce similar inks.

In addition, by improving the smell and chromaticity of the high-boiling aromatic solvent blended with the high-boiling hydrocarbon can reduce the user's rejection and ensure the low temperature stability in winter.

Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited thereto.

Example 1

A. Preparation of Solvent Composition

In the petroleum process, 70% by weight of the hydrocarbon solvent in the distillation range from 290 ° C to 360 ° C and 30% by weight of the high boiling aromatic component distilled from the oil produced in the reformer were blended. Next, the LHSV is passed through the clay (Engelhard company product name F-24) corresponding to 2% by weight of the solvent so that 2 ~ 4hr ^-1 , and 0.08% by weight of polymethacrylate (YA265, Rohmax) is added. did.

B. Preparation of Colorants

In order to measure the physical properties of the composition obtained in the above step as a plasticizer, a sample was prepared as follows. 40% by weight of rosin-modified phenolic resin, 20% by weight of linseed oil, and 40% by weight of the solvent composition obtained in step A were taken in a flask. After heating the gelling agent (Gelling agent) was administered and heated again to prepare a colorant.

C. Preparation of Ink for Property Test

50% by weight of the varnish prepared in step B, 25% by weight of the pigment, solvent 25% by weight and mixed to prepare an ink. In order to check the physical properties of the ink was measured using an L-type viscometer, Spreadometer, Inkometer, RI tester and the like.

The results of the experiment are shown in Table 1 below.

[Example 2]                     

A. Preparation of Solvent Composition

A solvent was prepared as in Example 1, but was prepared using phenylxylylethane as a high boiling aromatic component.

B. Preparation of Colorants

A developer was prepared according to the method of Example 1, and the composition prepared in Example 2 was used as a solvent.

C. Preparation of Ink for Property Test

The physical properties of Example 1 were measured according to the experimental method, and the results are shown in Table 1 below.

Comparative Example 1

A. Preparation of Colorants

Newspaper ink solvent prepared with the oil produced in the existing solvent dewaxing base oil process was prepared according to the method of preparing a colorant of Example 1. The carbon composition of this solvent is 7% aromatic carbon, 49% lead carbon, and 44% paraffin carbon.

B. Preparation of Ink for Property Test

The physical properties of Example 1 were measured according to the experimental method, and the comparison results thereof are shown in Table 1 below.

Comparative Example 2

A. Preparation of Solvent Composition                     

 In the petroleum process, only hydrocarbon solvents in the distillation range from 280 ℃ to 400 ℃ produced from LGO or VGO were used.

B. Preparation of Colorants

A developer was prepared according to the method of Example 1, and the solvent shown in Comparative Example 2 was used.

C. Preparation of Ink for Property Test

The physical properties of Example 1 were measured according to the experimental method, and the results are shown in Table 1 below.

Through Table 1, it can be seen that the fluidity and viscosity of the solvent prepared according to the method of Examples 1 and 2 are superior to the results of Comparative Example 1, and thus the drying rate is improved due to the high permeability to the paper material. Could know. In addition, when comparing Examples 1 and 2 and Comparative Example 1 with Comparative Example 2, a high boiling point hydrocarbon solvent prepared from LGO or VGO oil containing no aromatic component was high in aniline point and almost all ink properties were inferior.

Newspaper ink solvents containing aromatic components in high-boiling hydrocarbons prepared by distillation from LGO or VGO fractions in the petroleum process have similar resin solubility and ink performance as compared to those using lubricating base oil after solvent dewaxing. Therefore, it has been found that the solvent can be commercialized using the high boiling hydrocarbon of the general petroleum process. In addition, as a result of confirming the smell by the sensory, there was no specific smell was expected to avoid the rejection of the user or manufacturer.

As described above, the solvent composition for newspaper ink of the present invention is used in the production of newspaper ink to enhance compatibility with commercial resins such as rosin-modified phenolic resins, improve permeability to paper, and to provide low temperature stability, odor, and color. It also has the effect of improving.

It is apparent that modifications and improvements are possible by those skilled in the art within the spirit or scope of the present invention. Accordingly, the simple modifications and variations of the present invention are all within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims and their equivalents.

Claims (13)

50 to 80% by weight of a hydrocarbon solvent in the distillation range of 280 ℃ to 400 ℃ produced from the LGO or VGO fraction in the petroleum process, and 20 to 50% by weight of high boiling aromatic compounds produced from the oil of the catalytic reforming process, Solvent composition for newspaper ink, characterized in that the irritating odor was removed through (clay). The solvent composition for newspaper ink according to claim 1, wherein the high boiling point aromatic compound is an aromatic compound having a distillation range of 280 ° C to 400 ° C. The solvent composition for newspaper ink according to claim 1, wherein the high boiling aromatic compound is phenylxylylethane. The solvent composition for newspaper inks according to claim 1, wherein the aniline point is adjusted to 68 ° C to 75 ° C by blending the high boiling aromatic compound.  The solvent composition of claim 1, wherein the composition further comprises at least one additive selected from the group consisting of polymethacrylate, styrene-based polyester, crosslinked alkyl-phenol, and alkylated naphthalene. . (a) 50 to 80% by weight of a hydrocarbon solvent in the distillation range of 280 ℃ to 400 ℃ produced from LGO or VGO oil in the petroleum process, and 20 to 50% by weight of the high boiling aromatic compounds produced from the oil of the catalytic reforming process step; And (b) contacting the mixture with 1 to 10% by weight of clay; Method for producing a solvent for newspaper ink comprising a. The method of claim 6, wherein the high boiling point aromatic compound is an aromatic compound having a distillation range of 280 ° C to 400 ° C. The method for producing a newspaper ink solvent according to claim 6, wherein the high boiling aromatic compound is phenyl xylylethane. The method of claim 6, wherein the method is carried out batchwise or continuously. 10. The method of claim 9, wherein when the method is carried out continuously, the mixture is contacted with clay so that the LHSV is 1 to 5 h ⁻¹ . The method of claim 6, wherein the method further comprises: (c) at least one additive selected from the group consisting of polymethacrylate, styrene-based polyesters, crosslinked alkyl-phenols and alkylated naphthalenes in the mixture passed through the clay; The manufacturing method of the solvent for newspaper ink characterized by the above-mentioned. The coloring agent for newspaper ink containing the solvent composition of any one of Claims 1-5. Newspaper ink containing the solvent composition of any one of Claims 1-5.