KR101425426B1 - Offset fluoroscent ink base and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to an offset fluorescent ink base with outstanding compatibility, transition property, and water resistance, and to a method for preparing the same. The properties of the offset fluorescent ink base can be improved by improving properties of amino resin in which a dye is dyed, using a medium resin comprising oil modified alkyd resins, specific modified alkyd resins, petroleum resins, and petroleum-based solvents.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an offset fluorescent ink base and an offset fluorescent ink base,

The present invention relates to an offset fluorescent ink base excellent in compatibility, metastability and water resistance, and a method for producing the above offset fluorescent ink base.

The offset fluorescent ink comprises a base and a barn, and the present invention is a technique relating to a base in two.

Fluorescent pigment is a fluorescent pigment that absorbs light of short wavelengths such as visible, blue, and blue light from the outside of the organic compound, and emits fluorescence, which is generated in the process of returning to the ground state by energy radiation Organic pigment " Fluorescent pigments are commonly found in book covers, advertisements, posters, displays, packaging materials and the like due to their excellent coloring effect and clear visibility, and they are mainly used for paper, ink, art materials, textile, and plastic .

Fluorescent pigments are mainly composed of a polymer resin with a fluorescent dye attached to it. The polymer resin is the most important factor that determines the physical properties when applied in practical applications such as solvent resistance, heat resistance and weather resistance. As such a polymer resin, Amino resin is mainly used.

On the other hand, rosin-modified phenol resin is mainly used for offset ink, and alkyd resin, petroleum resin and the like are partially used. However, since the thermosetting amino resin is mostly used in fluorescent powder pigments currently produced in Korea, there is a problem that the compatibility with the resin for the offset ink is extremely poor, making it difficult to form an ink. If an ink product is prepared by mixing a conventionally-sold fluorescent pigment and a rosin-modified phenolic resin to prepare a base and then mixing the varnish, a roll-to-roll transition on the transition roller of the printing machine may be defective and water resistance may become poor, , A fluorescent ink base having excellent compatibility, transparency, and water resistance properties is required.

For example, U.S. Pat. No. 3,455,856 discloses a method of reacting a rubidic alkyd varnish, which is a vehicle of printing ink, with a sulfonamide-formaldehyde resin, benzoguanamine, melamine and paraformaldehyde, and coloring and dispersing the fluorescent dye, The present invention provides a fluorescent ink having fine colored resin particles in the form of fine particles. However, the above-mentioned United States patent does not use a rosin-modified phenol resin having excellent transparency and water resistance, which is mainly used as a vehicle for printing ink, and uses an alkyd resin having poor water resistance. Therefore, Is poor and lacks sharpness and brightness as a fluorescent pigment.

In addition, US Patent No. 4,074,026 discloses a method of using a drying ink modified alkyd resin, a rosin denatured ester, a carboxyl group denatured petroleum resin, an oil and the like as a vehicle to color and disperse a fluorescent dye in a modified sulfonamide to obtain a fluorescent ink . However, the above-mentioned United States registered patent uses rosin denatured ester and carboxyl group denatured petroleum resin having a poor water resistance and dry acid-modified alkyd resin and acid value, thereby deteriorating the water resistance which is important in print quality.

On the other hand, there is no offset fluorescent ink base related patents in domestic patents. At present, more than 80% of the global offset fluorescent ink base market is occupied by a foreign company, and there is no development in Korea.

US registered patent US3455856 US registered patent US4079026

An object of the present invention is to solve the problem that sufficient compatibility, metastability and water resistance can not be ensured, which is a problem of a fluorescent pigment using a conventional thermosetting amino resin, and is excellent in compatibility with a rosin- An offset fluorescent ink base having excellent transparency and water resistance in aptitude, and a method of manufacturing the same.

The present invention relates to an amino resin in which a fluorescent dye is colored; Rosin-modified phenolic resin-based vehicle resin; And an offset fluorescent ink base comprising a medium resin, wherein the medium resin comprises a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin and a petroleum solvent.

In particular, it is preferable that the total weight of the medium resin is 10 to 30% by weight of a rubidic alkyd resin, 10 to 30% by weight of a special modified alkyd resin, 40 to 60% by weight of a petroleum resin and 10 to 20% by weight of a petroleum solvent.

Particularly, the rubidic alkyd resin is obtained by modifying the alkyd resin with any one or a mixture selected from linseed oil, soybean oil, glycol, glycerin, pentaerythritol, phthalic anhydride, maleic anhydride, fumaric acid, isophthalic acid, succinic acid and adipic acid .

Particularly, the specially modified alkyd resin may be modified by using any one or a mixture selected from rosin, phenol resin, epoxy resin, silicone polymer and resin, styrene, vinyl toluene, methyl methacrylate and polyisocyanate as the rubidic alkyd resin. .

In particular, the petroleum resin preferably has a softening point of 90 to 160 ° C and an acid value of 0.01 to 1 mgKOH / g.

In particular, the petroleum solvent is preferably a high boiling point petroleum solvent having a distillation range of 250 to 350 ° C.

In particular, the present invention relates to a method for producing an offset fluorescent ink base comprising the above-mentioned medium resin, comprising the steps of: (1) preparing a medium resin comprising a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin and a petroleum solvent; (2) a step of cross-linking the amino resin and the formaldehyde under water and a base catalyst while heating and stirring the medium resin to prepare an amino resin; (3) coloring the amino resin with a fluorescent dye; And a step (4) of introducing a surfactant and a petroleum solvent into the mixture of the amino resin colored with the fluorescent dye and the medium resin.

Particularly, in the step (1), 10 to 30% by weight of the rubidic alkyd resin, 10 to 30% by weight of the special modified alkyd resin, 40 to 60% by weight of the petroleum resin and 10 to 20% .

Particularly, in step (2), in the step (2), the medium resin is 35 to 55 wt%, the amino compound is 20 to 40 wt%, the formaldehyde is 5 to 15 wt%, the water is 5 to 15 wt% Is preferably 0.1 to 1% by weight.

Particularly, in the step (1), in the step (1), the oil-modified alkyd resin may be any one selected from linseed oil, soybean oil, glycol, glycerin, pentaerythritol, phthalic anhydride, maleic anhydride, fumaric acid, isophthalic acid, succinic acid and adipic acid It is preferable to modify it by using a mixture.

Particularly, in the step (1), the specially modified alkyd resin may be added to the rheostatic alkyd resin by any one selected from the group consisting of rosin, a phenol resin, an epoxy resin, a silicone polymer and a resin, styrene, vinyl toluene, methyl methacrylate and polyisocyanate Or a mixture thereof.

In particular, in the step (1), the petroleum resin preferably has a softening point of 90 to 160 ° C and an acid value of 0.01 to 1 mg KOH / g.

In particular, in the step (1), the petroleum solvent is preferably a high boiling point petroleum solvent having a distillation range of 250 to 350 ° C.

In particular, the reaction temperature in step (1) is preferably 120 to 150 ° C.

In particular, it is preferable that the amino compound in step (2) is any one or a mixture selected from para-toluenesulfonamide, melamine, benzoguanamine and urea.

In particular, the formaldehyde in step (2) is preferably any one or a mixture selected from paraformaldehyde and formalin.

In particular, the base catalyst of step (2) is preferably any one or a mixture selected from sodium hydroxide, potassium hydroxide and triethylamine.

In particular, the reaction temperature in the step (2) is preferably 60 to 100 ° C.

In particular, it is preferable that the fluorescent dye of the step (3) is any one or a mixture selected from a basic dye, a solvent dye, a direct dye, an acid dye and a reactive dye.

In particular, the reaction temperature in step (3) is preferably 60 to 100 ° C.

In particular, the surfactant in the step (4) is preferably any one or a mixture selected from a cationic surfactant, an anionic surfactant and a nonionic surfactant.

In particular, the petroleum solvent in the step (4) is preferably a high boiling point petroleum solvent having a distillation range of 250 to 350 ° C.

In particular, the reaction temperature in step (4) is preferably 100 to 150 ° C.

In particular, it is preferable that the above-mentioned steps (1) to (4) are carried out under stirring conditions of a stirring speed of 500 to 2000 rpm.

INDUSTRIAL APPLICABILITY By providing an offset fluorescent ink base excellent in compatibility, metastability and water resistance, it is possible to easily produce an offset fluorescent ink, and its physical properties can also be improved by providing an excellent print quality .

The present invention provides an offset fluorescent ink base excellent in compatibility, transparency, and water resistance, and a method for producing the same.

The medium resin according to the present invention includes essential components such as a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin, and a petroleum solvent, and may further contain additional components as required.

The offset fluorescent ink base mainly uses an amino resin which is formed by condensation of an amino compound and formaldehyde. However, the amino resin is insufficient in lipophilic property for use as a resin for printing ink. Therefore, in the present invention, the amino resin is cross-linked to a medium resin to impart lipophilic properties to the intermediate resin of the present invention. In the present invention, when formaldehyde is added to an amino compound to form a methylol, and the carboxyl group, hydroxyl group, etc. of the above-mentioned medium resin are condensed to the methylol, lipophilic properties can be imparted to the amino resin.

As described above, the medium resin includes a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin, and a petroleum solvent. Hereinafter, each individual component will be described in more detail.

Metamorphosis  Alkyd resin

The rubidic alkyd resin refers to a resin obtained by modifying an alkyd resin, which is a condensate of a polybasic acid such as phthalic anhydride and a polyhydric alcohol such as glycerin, with an alkyd resin to an oil or a fatty acid.

The physical properties of the rubidic alkyd resin depend mainly on the kind of the denatured oil, the type of whey, and the type of denaturation. The rubidic alkyd resin is excellent in durability, weatherability, flexibility, toughness, luster, color tone retention, pigment dispersibility, heat resistance, and low cost. The rubidic alkyd resin may be used alone or in combination with other vehicles depending on the degree of modification, and may be mixed with other resins.

Examples of the polybasic acid include phthalic anhydride, maleic anhydride, fumaric acid, isophthalic acid, succinic acid, succinic acid, succinic acid, and the like. Adipic acid and the like. These may be used alone or in combination.

It is preferable that 10 to 30% by weight of the rheostatic alkyd resin is used in the total weight of the medium resin.

Special Modified Alkyd Resin

The specially modified alkyd resin is obtained by modifying the above-mentioned rubidic alkyd resin with one or a mixture selected from rosin, phenol resin, epoxy resin, silicone polymer and resin, styrene, vinyl toluene, methyl methacrylate and polyisocyanate It says.

Special modified alkyd resins improve solubility, dryness, hardness and gloss through further modification. Each of the specially modified alkyd resins has advantages and disadvantages, and it is preferable to use them appropriately according to the required physical properties. For example, the rosin-modified alkyd resin is excellent in quick-drying property, internal dryness, hardness and gloss, but has poor weatherability. The phenol-modified alkyd resin improves water resistance, alkalinity, hardness, gloss and the like, which are disadvantages of alkyd resins, but the coating film is easily discolored by ultraviolet rays. The polymerizable monomer-modified alkyd resin is generally prepared by copolymerizing a double bond in a fatty acid contained in an oil-modified alkyd resin with a polymerizable monomer, wherein styrene, vinyltoluene, methyl methacrylate or the like is generally used as a polymerizable monomer When these monomers are modified, quick drying property and water resistance can be obtained. Among the specially modified alkyd resins, the styrene-modified alkyd resins are quick-drying as compared with the rosin-modified alkyd resins, and are excellent in water resistance and alkali resistance and in gloss retention. Disadvantages are thermoplastic and naturally solvent-resistant coatings have poor solvent resistance and a lubrication agent such as aromatic hydrocarbons is needed to dissolve the resin.

The special modified alkyd resin is preferably used in an amount of 10 to 30% by weight based on the total weight of the medium resin.

Petroleum resin

The petroleum resin refers to a light yellow or blackish brown thermoplastic resin having a molecular weight of 2000 or less and obtained by polymerizing an unsaturated hydrocarbon present in a high-temperature pyrolysis oil such as naphtha as a raw material and by an acid catalyst.

In particular, in the present invention, the petroleum resin is preferably a petroleum resin having a softening point of 90 to 160 DEG C and an acid value of 0.01 to 1 mgKOH / g. The petroleum resin may be used alone or in combination of several species.

The petroleum resin is preferably used in an amount of 40 to 60% by weight based on the total weight of the medium resin.

Petroleum solvent

The petroleum solvent is preferably a high boiling point petroleum solvent having a distillation range of 250 to 350 ° C. These may be used alone or in combination.

The petroleum solvent is preferably used in an amount of 10 to 20% by weight based on the total weight of the medium resin.

Next, a method for producing an offset fluorescent ink base according to the present invention will be described.

The present invention relates to a process for producing (1) a medium resin comprising a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin, and a petroleum solvent; (2) a step of cross-linking the amino resin and the formaldehyde under water and a base catalyst while heating and stirring the medium resin to prepare an amino resin; (3) coloring the amino resin with a fluorescent dye; And a step (4) of adding the colored amino resin to the medium resin with a surfactant and a petroleum solvent.

Hereinafter, each step will be described in more detail.

Step (1)

Step (1) is a step of producing a medium resin including a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin, and a petroleum solvent.

In the total weight of the medium resin, 10 to 30% by weight of the rubidic alkyd resin, 10 to 30% by weight of the special modified alkyd resin, 40 to 60% by weight of the petroleum resin, Based solvent in an amount of 10 to 20% by weight.

When the amount of the oil-modified alkyd resin is less than 10% by weight, the viscosity of the medium resin is increased and the gel is likely to be formed during the production of the fluorescent ink base. When the amount is more than 30% by weight, the viscosity of the medium resin is lowered, There is a problem of growing. If the amount of the special modified alkyd resin is less than 10% by weight, the metastability and water resistance become poor. When the amount of the special modified alkyd resin exceeds 30% by weight, the medium viscosity increases and gelation may occur during the production of the fluorescent ink base. If the amount of the petroleum resin is less than 40% by weight, the compatibility and the water resistance become poor. If the amount is more than 60% by weight, the content of the petroleum resin becomes too boiling during the production of the fluorescent ink base.

The first step is preferably heated and dissolved at 120 to 150 ° C.

Step (2)

In the step (2), in addition to the polymerization of the amino resin, a reaction of the polymerized amino resin with an alkyd resin (a rubidic alkyd resin and a special modified alkyd resin) in a medium resin is performed. In the amino resin, an acid due to the free acid group and the acid value present in the alkyd resin acts as a catalyst, and the hydroxy group of the alkyd and the amino resin react as shown in the reaction formula (1).

[Reaction Scheme 1]

In step (2), as described above, amino resin and formaldehyde are crosslinked and reacted with water and base catalyst while heating and stirring the medium resin to synthesize an amino resin.

Wherein the amount of the intermediate resin is 35 to 55 wt%, the amount of the amino compound is 20 to 40 wt%, the amount of the formaldehyde is 5 to 15 wt%, the amount of the water is 5 to 15 wt% 1% by weight based on the total weight of the composition.

If the medium resin is less than 35 wt%, compatibility, metastability and water resistance of the fluorescent ink base are poor. If the medium resin is more than 55 wt%, the fluorescent color density becomes poor. If the amount of the amino compound is less than 20% by weight, coloring of the fluorescent dye becomes poor. If the amount of the amino compound exceeds 40% by weight, the color density of the fluorescent ink base becomes weak. If the formaldehyde is less than 5% And when it exceeds 15% by weight, odor problems arise due to unreacted formaldehyde. If the amount of the base catalyst is less than 0.1% by weight, the reaction rate between the amino compound and formaldehyde is slowed down and is not economical. If the base catalyst is more than 1% by weight, the base color of the fluorescent ink may be discolored or side reactions may occur due to excessive base conditions.

In the step (2), it is preferable that the medium resin mixed and prepared in the step (1) is cooled to 60 to 100 ° C, and water, a base catalyst, an amino compound and formaldehyde are dissolved while being charged and stirred.

Examples of the amino compound include para-toluenesulfonamide, melamine, benzoguanamine, urea, and the like, which may be used alone or in combination.

Examples of the formaldehyde include paraformaldehyde and formalin, and these may be used alone or in combination.

Examples of the base catalyst include sodium hydroxide, potassium hydroxide, triethylamine and the like, which may be used alone or in combination.

Step (3)

Step (3) is a step of coloring the amino resin with the fluorescent dye after step (2). Hydrogen bonding, ion bonding and Van der Waals' forces are all involved in the dyeing of amino resin dyes. Most of the dye molecules and amino resin molecules contain -OH, -NH ₂ , -CONH- Hydrogen bonding acts between dye and amino resin. This hydrogen bonding force is a major cause of the affinity between dye and amino resin. The ionic bond is an electrostatic bond between an anion and a cation, The van der Waals force acts between the amino resin, which is not hydrogen bonded, and the dye molecule or between the atoms that are not covalently bonded.

The fluorescent dye is preferably used in an amount of 1 to 5% by weight based on the total weight of the offset fluorescent base. If the amount of the fluorescent dye is less than 1% by weight, the fluorescent color density becomes poor. If the amount of the fluorescent dye exceeds 5% by weight, unreacted fluorescent dye may be colored when emulsified.

In the step 3, the fluorescent dye is preferably added at 60 to 100 ° C to conduct the reaction.

Examples of the fluorescent dyes include basic dyes, solvent dyes, direct dyes, acid dyes, and reactive dyes, which may be used alone or in combination.

Step (4)

Step (4) is a step of dispersing the colored amino resin into fine resin particles into fine particles and injecting surfactant and petroleum solvent.

The surfactant is preferably used in an amount of 0.2 to 1 wt% based on the total weight of the offset fluorescent base and 5 to 15 wt% in the petroleum solvent. If the amount of the surfactant is less than 0.2% by weight, the water resistance of the fluorescent ink base becomes poor. If the surfactant is more than 1% by weight, the conductivity is increased, resulting in problems such as a plate remaining on the printing machine or a residue on the blanket.

In step 4, the temperature in the fluorescent ink base is raised to 100 to 150 ° C., and the water-soluble amino resin is dispersed into fine particles. The surfactant and the petroleum solvent are introduced and removed.

Examples of the surfactant include a cationic surfactant, an anionic surfactant, and a nonionic surfactant, which may be used alone or in combination.

The petroleum-based solvent is preferably the same as the solvent used in the medium resin.

In all of the steps 1, 2, 3 and 4, the stirring speed is 500 to 2,000 rpm. If the agitation speed is less than 500 rpm, the colored amino particles are formed to be 5 탆 or more and the fluorescent ink base becomes poor. If the stirring speed is over 2,000 rpm, it is uneconomical because a cost investment is required for the high-speed stirrer.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples.

[Example]

[ Example 1]

In a reactor equipped with a thermometer and a stirrer, 28 parts by weight of a soybean-modified alkyd resin, 22 parts by weight of a rosin-modified alkyd resin, 62 parts by weight of a petroleum resin and 30 parts by weight of a petroleum solvent were charged and heated at 140 캜 to prepare a medium resin.

When the medium resin was completely dissolved, 60 parts by weight of water and 2 parts by weight of sodium hydroxide were added to the solution, and 36 parts by weight of paraformaldehyde was added to dissolve the solution. After 10 minutes, 85 parts by weight of para-toluenesulfonamide and 28 parts by weight of melamine were added to react.

After the lapse of 30 minutes, 9 parts by weight of Basic Dye Yellow 40 was added to cause dyeing.

After 1 hour, the temperature was raised to 140 ° C for 2 hours and then maintained for 1 hour. 3 parts by weight of a nonionic surfactant, 45 parts by weight of a petroleum solvent, and 10 minutes later to prepare a fluorescent ink base.

[ Example 2]

31 parts by weight of linseed modified alkyd resin, 25 parts by weight of vinyl toluene-modified alkyd resin, 67 parts by weight of petroleum resin and 30 parts by weight of petroleum solvent were put in a reactor similar to that of Example 1, and heated to 140 캜 to prepare a medium resin .

When the medium resin was completely dissolved, the solution was cooled to 80 ° C, 60 parts by weight of water and 2 parts by weight of sodium hydroxide were added, and then 40 parts by weight of paraformaldehyde was added thereto to dissolve. After 10 minutes, 53 parts by weight of paratoluenesulfonamide, 38 parts by weight of melamine and 22 parts by weight of benzoguanamine were added and reacted.

After 30 minutes, 9 parts by weight of Basic Dye Yellow 40 was added to cause dyeing.

After 1 hour, the temperature was raised to 140 ° C for 2 hours and then maintained for 1 hour. 3 parts by weight of a nonionic surfactant, 45 parts by weight of a petroleum solvent, and 10 minutes later to prepare a fluorescent ink base.

[ Comparative Example 1]

In the same reactor as in Example 1, 70 weight parts of linseed modified alkyd resin, 65 weight parts of rosin-modified phenol resin and 40 weight parts of petroleum solvent were charged and heated to 170 deg. C to prepare a comparative medium resin.

When the medium resin was completely dissolved, the mixture was cooled to 80 ° C, 60 parts by weight of water and 2 parts by weight of sodium hydroxide were added, and then 33 parts by weight of paraformaldehyde was added to dissolve the mixture. After 10 minutes, 62 parts by weight of paratoluenesulfonamide, 25 parts by weight of melamine and 28 parts by weight of benzoguanamine were added and reacted.

After 30 minutes, 9 parts by weight of Basic Dye Yellow 40 was added to cause dyeing.

After 1 hour, the temperature was raised to 140 ° C for 2 hours and then maintained for 1 hour. 3 parts by weight of a nonionic surfactant, 45 parts by weight of a petroleum solvent, and 10 minutes later to prepare a fluorescent ink base.

[ Comparative Example 2]

The commercially available radiant RBS-10 was purchased and used as it is.

Examples 1 and 2 and Comparative Examples 1 and 2 are summarized in Table 1.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Flax-modified alkyd resin 31 70 RBS-10 Soybean oil modified alkyd resin 28 Rosin-modified alkyd resin 22 Vinyl toluene-modified alkyd resin 25 Petroleum resin 62 67 Rosin-modified phenolic resin 65 Petroleum solvent 30 30 40 water 60 60 60 Sodium hydroxide 2 2 2 Paraformaldehyde 36 40 33 Para-toluenesulfonamide 85 53 62 Melamine 28 38 25 Benzoguanamine 22 28 Basic Dye Yellow 40 9 9 9 Nonionic surfactant 3 3 3 Petroleum solvent 45 45 45

The physical properties of Examples 1 and 2 and Comparative Examples 1 and 2, which were prepared as described above, were evaluated in the following manner.

[Experimental Example]

The evaluation results for compatibility, metastability and water resistance are shown in Table 2 below.

Test result Example 1 Example 2 Comparative Example 1 Comparative Example 2 Compatibility ◎ ◎ X ◎ Metastatic ○ ◎ ○ ○ Water resistance ◎ ◎ △ ◎

In Table 2, compatibility, metastability and water resistance are as follows.

Compatibility

70 parts by weight of the fluorescent ink base prepared above and 30 parts by weight of offset varnish were dispersed by a three roll mill to prepare an offset fluorescent ink, and storage stability was evaluated after one month.

?: Fluorescent ink has not formed a coating

A: A film slightly developed in the fluorescent ink

?: Fluorescent ink having a coating formed thereon

X: a film is formed on the fluorescent ink and the inside is also hardened

Metastatic

70 parts by weight of the fluorescent ink base prepared above and 30 parts by weight of an offset varnish were dispersed by a three roll mill to prepare an offset fluorescent ink, and then transferred to the third chapter with RI-Tester to evaluate the ink transition state.

◎: All 1, 2, and 3 chapters have good metastatic characteristics

○: The first and second chapters are good in metastasis, but the third chapters are poor in metastasis

Δ: The first chapter is good in metastasis, but the second and third sections are poor in metastasis

X: poor metastasis in both 1st, 2nd and 3rd chapters

Water resistance

70 parts by weight of the fluorescent ink base prepared above and 30 parts by weight of offset varnish were dispersed in a three roll mill to prepare an offset fluorescent ink, and the emulsification rate was evaluated by Duke-Master.

◎: Emulsion rate less than 60% during 15 minutes emulsification

○: emulsification rate during emulsification of 15 minutes is 61 to 90%

[Delta]: emulsification rate at the time of 15 minutes emulsification is 91 to 110%

X: emulsification rate of 1% or more when emulsifying for 1 minute

As can be seen from the results shown in Table 2, when Examples 1 and 2 and Comparative Example 1 are compared with each other, it can be understood that the vinyltoluene-modified alkyd resin or rosin-modified alkyd resin, Containing compound improves the compatibility, the metastability and the water resistance.

On the other hand, when Example 2 was compared with Comparative Example 2, it was confirmed that Example 2 is more excellent in the metastability and comparable in compatibility and water resistance.

In general, the products of Examples 1 and 2 of the present invention were more excellent in printing suitability than those of Comparative Examples, and in particular, Example 2 exhibited excellent printing suitability.

Claims (24)

An amino resin colored with a fluorescent dye; Rosin-modified phenolic resin-based vehicle resin; And an offset fluorescent ink base comprising a medium resin,
The medium resin includes a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin and a petroleum solvent,
The rubidic alkyd resin is obtained by modifying an alkyd resin with one or a mixture selected from linseed oil, soybean oil, glycol, glycerin, pentaerythritol, phthalic anhydride, maleic anhydride, fumaric acid, isophthalic acid, succinic acid and adipic acid,
The specially modified alkyd resin may be one obtained by modifying the rubidic alkyd resin with any one or a mixture selected from rosin, a phenol resin, an epoxy resin, a silicone polymer and a resin, styrene, vinyl toluene, methyl methacrylate and polyisocyanate Features offset fluorescent ink base.
Wherein the total weight of the medium resin is 10 to 30% by weight of a rubidic alkyd resin, 10 to 30% by weight of a special modified alkyd resin, 40 to 60% by weight of a petroleum resin and 10 to 20% by weight of a petroleum solvent Offset fluorescent ink base.
delete delete The offset fluorescent ink base according to claim 1, wherein the petroleum resin has a softening point of 90 to 160 DEG C and an acid value of 0.01 to 1 mgKOH / g.
The offset fluorescent ink base according to claim 1, wherein the petroleum solvent is a high boiling point petroleum solvent having a distillation range of 250 to 350 ° C.
A step (1) of producing a medium resin including a rubidic alkyd resin, a special modified alkyd resin, a petroleum resin, and a petroleum solvent;
(2) a step of cross-linking the amino resin and the formaldehyde under water and a base catalyst while heating and stirring the medium resin to prepare an amino resin;
(3) coloring the amino resin with a fluorescent dye; And
And a step (4) of adding a surfactant and a petroleum solvent to a mixture of the amino resin with which the fluorescent dye is colored and the medium resin,
The rubidic alkyd resin of the step (1) may be any one or a mixture selected from linseed oil, soybean oil, glycol, glycerin, pentaerythritol, phthalic anhydride, maleic anhydride, fumaric acid, isophthalic acid, succinic acid and adipic acid And is characterized by being modified by using,
In the step (1), the specially modified alkyd resin may be any one or a mixture selected from rosin, phenol resin, epoxy resin, silicone polymer and resin, styrene, vinyl toluene, methyl methacrylate and polyisocyanate Wherein the modified fluorescent ink base material is modified by using the ink.
The method according to claim 7, wherein in step (1), the total amount of the modified resin is 10-30 wt%, the specific modified alkyd resin is 10-30 wt%, the petroleum resin is 40-60 wt% By weight based on the total weight of the ink.
The method according to claim 7, wherein in step (2), the medium resin is 35 to 55 wt%, the amino compound is 20 to 40 wt%, the formaldehyde is 5 to 15 wt%, the water is 5 to 15 wt% , And the base catalyst is 0.1 to 1 wt%.
delete delete [7] The method of claim 7, wherein the petroleum resin in the step (1) has a softening point of 90 to 160 DEG C and an acid value of 0.01 to 1 mgKOH / g.
The method for producing an offset fluorescent ink base according to claim 7, wherein the petroleum solvent in the step (1) is a high boiling point petroleum solvent having a distillation range of 250 to 350 ° C.
The method of claim 7, wherein the reaction temperature of step (1) is 120 to 150 ° C.
The method for producing an offset fluorescent ink base according to claim 7, wherein the amino compound in step (2) is any one or a mixture selected from para toluenesulfonamide, melamine, benzoguanamine and urea.
The method for producing an offset fluorescent ink base according to claim 7, wherein the formaldehyde in step (2) is any one or a mixture selected from paraformaldehyde and formalin.
The method for producing an offset fluorescent ink base according to claim 7, wherein the base catalyst of step (2) is any one or a mixture selected from sodium hydroxide, potassium hydroxide and triethylamine.
The method of claim 7, wherein the reaction temperature in step (2) is 60 to 100 ° C.
The method for producing an offset fluorescent ink base according to claim 7, wherein the fluorescent dye of step (3) is any one selected from a basic dye, a solvent dye, a direct dye, an acid dye and a reactive dye.
The method of claim 7, wherein the reaction temperature in step (3) is 60 to 100 ° C.
The method for producing an offset fluorescent ink base according to claim 7, wherein the surfactant in step (4) is any one selected from the group consisting of a cationic surfactant, an anionic surfactant and a nonionic surfactant.
The method for producing an offset fluorescent ink base according to claim 7, wherein the petroleum solvent in step (4) is a high boiling point petroleum solvent having a distillation range of 250 to 350 ° C.
The method of claim 7, wherein the reaction temperature in step (4) is 100 to 150 ° C.
The method according to claim 7, wherein the steps (1) to (4) are carried out under agitation at a stirring speed of 500 to 2000 rpm.