JP2000026782A - Binder for printing ink and printing ink composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a binder for a printing ink especially suitable for a nonaromatic solvent type printing ink, having excellent adhesiveness to various kinds of plastics such as polyester, nylon, polyethylene, polypropylene, or the like, a material to be printed and a printing ink composition containing the binder for a printing ink. SOLUTION: In this binder for a printing ink containing mainly a polyurethane obtained by reacting a polymer diol with a diisocyanate compound and a chain extender, the binder contains a 2,4-dialkyl-1,5-pentanediol as the constituent composition for the polymer diol.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a binder for printing ink and a printing ink composition.

[0002]

2. Description of the Related Art In recent years, with the diversification of packaging materials and the advancement of packaging technology, various types of plastic films have been developed as packaging materials. It is becoming. By the way, when a plastic film is used as a packaging material, printing is performed for decoration or surface protection of the plastic film, and the printing ink for such printing has good adhesion to these various plastic films. There is a growing demand for advanced performance.

[0003] Conventionally, polyurethane has been widely used as a binder for printing ink used in such printing ink. In general, printing inks using polyurethane as a binder have excellent adhesion to polyester films and nylon films alone, but have insufficient adhesion to general-purpose films such as polyethylene films and polypropylene films. When printing on a film or a polypropylene film, a toluene-type printing ink in which a chlorinated polypropylene resin is blended with polyurethane has been used to supplement the adhesive strength.

[0004]

However, recently, there has been a demand for environmentally friendly inks, and it has become necessary not to use aromatic solvents such as toluene in printing inks. The non-aromatic solvent-based printing ink (generally referred to as non-toluene-type printing ink) uses a non-aromatic solvent such as methyl ethyl ketone or ethyl acetate as a main solvent as a main solvent. Difficult to dissolve in,
There was a problem that sufficient adhesion to a polyethylene film or a polypropylene film could not be obtained. The present invention solves the problems as described above, and has excellent adhesiveness to various plastic films such as polyester, nylon, polyethylene, and polypropylene as a substrate to be printed, and is particularly suitable for a non-aromatic solvent-type printing ink. And a printing ink composition containing the printing ink binder.

[0005]

Means for Solving the Problems The present inventors have intensively studied to provide a printing ink binder and a printing ink composition containing the printing ink binder which can solve the above-mentioned problems. As a result, they found that such a problem could be solved when a polyurethane containing a specific glycol as a constituent component was used as a binder for printing ink, and completed the present invention.

That is, the present invention relates to a binder for a printing ink mainly comprising a polyurethane obtained by reacting a polymer diol, a diisocyanate compound and a chain extender, wherein 2,4,4 A binder for printing inks, comprising a dialkyl-1,5-pentanediol. The present invention also relates to a printing ink composition containing the printing ink binder.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, in order to solve the above-mentioned problems, a polyurethane containing 2,4-dialkyl-1,5-pentanediol is used as a binder for a printing ink as a component of a polymer diol. . Such polyurethane is not particularly limited, but in the present invention, 2,4,4
Polyurethanes containing a glycol component (A) containing a dialkyl-1,5-pentanediol and a polyester diol consisting of a dibasic acid component (B) are preferred. The polyester diol comprising the glycol component (A) and the dibasic acid component (B) can be obtained by condensation by various known methods.

As the 2,4-dialkyl-1,5-pentanediol, specifically, the total number of carbon atoms is 7 to 21.
2,4-dimethyl-1,5-pentanediol, 2-ethyl-4-methyl-1,5-pentanediol, 2-methyl-4-propyl-1,5-pentanediol, -Isopropyl-4-methyl-1,5
-Pentanediol, 2,4-diethyl-1,5-pentanediol, 2-ethyl-4-propyl-1,5-pentanediol, 2-ethyl-4-isopropyl-1,
5-pentanediol, 2,4-dipropyl-1,5-
Pentanediol, 2-isopropyl-4-propyl-
1,5-pentanediol, 2,4-diisopropyl-
1,5-pentanediol, 2,4-dibutyl-1,5
-Pentanediol, 2,4-dipentyl-1,5-pentanediol, 2,4-dihexyl-1,5-pentanediol, 2,4-diheptyl-1,5-pentanediol, 2,4-dioctyl-1 , 5-pentanediol and the like. Among these, 2,4-diethyl-1,
5-pentanediol is preferred.

In the present invention, the glycol component (A)
Wherein at least 30% by weight is 2,4-dialkyl-1,
Preferably, it is 5-pentanediol. When the amount is less than 30% by weight, the adhesiveness to polyethylene and polypropylene becomes poor when a non-aromatic solvent type printing ink is used. Note that the glycol component (A) may be only 2,4-dialkyl-1,5-pentanediol.

In the glycol component (A) of the polyester diol, if the content is less than 70% by weight, 2,4
Various known glycols other than -dialkyl-1,5-pentanediol can be used in combination. For example, ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, pentanediol, 3-methyl- 1,5-pentanediol, 2,
2,4-trimethyl-1,3-pentanediol, 2-
Ethyl-3-propyl-1,5-pentanediol, hexanediol, octanediol, 2,2-diethyl-1,3-propanediol, 2-ethyl-2-butyl-1,3-propanediol, 1,4 And various known saturated and unsaturated glycols such as butynediol and dipropylene glycol. In the present invention, in addition to the above-mentioned glycols, alkyl glycidyl ethers such as n-butyl glycidyl ether and 2-ethylhexyl glycidyl ether, and monocarboxylic acid glycidyl esters such as versatic acid glycidyl ester are also used as a kind of glycols. sell.

The dibasic acid component (B), which is another component forming the polyester diol together with the above-mentioned various glycol components (A), includes various known components which are generally known as polyester acid components as follows. Can be used. For example, dibasic acids such as adipic acid, maleic acid, fumaric acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, oxalic acid, malonic acid, glutaric acid, pimelic acid, azelaic acid, sebacic acid, suberic acid, etc. Acid anhydrides and dimer acids corresponding to these are exemplified.

The number average molecular weight of the polyester diol comprising the glycol component (A) containing the 2,4-dialkyl-1,5-pentanediol and the dibasic acid component (B) is determined by the solubility and drying property of the obtained polyurethane. , Is appropriately determined in consideration of blocking resistance and the like.
0, preferably 700, with an upper limit of 5000, preferably 4
000 is preferable. The number average molecular weight is 50
If it is less than 0, the printability tends to be inferior as the solubility decreases, while if it exceeds 5000, the drying property and the blocking resistance tend to decrease.

Further, as long as the performance of the polyurethane of the present invention is not deviated, in addition to the polyester diol of the present invention, ethylene oxide,
Polyether diols such as polymers or copolymers such as propylene oxide and tetrahydrofuran; polyester diols other than the present invention obtained by condensing a dibasic acid and a glycol component; polyesters obtained by ring-opening polymerization of a cyclic ester compound Diols; Polycarbonate diols; Polybutadiene glycols; Bisphenol A
Various known high-molecular diols generally used in the production of polyurethanes, such as glycols obtained by adding ethylene oxide or propylene oxide to propylene oxide, can be used. The amount of these optional polymer diols used is usually 70% by weight, preferably less than 50% by weight, based on the total polymer diol.

Further, a low molecular weight diol component having a number average molecular weight of less than 500 can be used in combination if it does not deviate from the performance of the polyurethane of the present invention. Specific examples include 2,4-diethyl-1,5-pentanediol described in the section of the glycol component (A) used in the polyester diol of the present invention and various other glycols. The amount of the low molecular weight diol component is usually less than 10 parts by weight based on 100 parts by weight of the high molecular weight diol. When the amount is 10 parts by weight or more, there is a tendency that printability is lowered due to a decrease in solubility, and adhesion to a nylon film is lowered.

In the present invention, various known aromatic, aliphatic or alicyclic diisocyanates can be used as the diisocyanate compound. For example, 1,5
-Naphthylene diisocyanate, 4,4'-diphenylmethane diisocyanate, 4,4'-diphenyldimethylmethane diisocyanate, 4,4'-dibenzyl isocyanate, dialkyldiphenylmethane diisocyanate, tetraalkyldiphenylmethane diisocyanate, 1,3-phenylene diisocyanate, 1, 4-phenylene diisocyanate, tolylene diisocyanate, butane-1,4-diisocyanate, hexamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, cyclohexane-1,4
-Diisocyanate, xylylene diisocyanate, isophorone diisocyanate, lysine diisocyanate,
Dicyclohexylmethane-4,4-diisocyanate,
Typical examples thereof include 1,3-bis (isocyanatomethyl) cyclohexane, methylcyclohexane diisocyanate, m-tetramethylxylylene diisocyanate, and dimer isocyanate obtained by converting a carboxyl group of dimer acid into an isocyanate group.

In the present invention, an amine-based chain extender is used particularly in consideration of adhesiveness to a nylon film. Specific examples of the amine-based chain extender include aromatic, aliphatic and alicyclic various known diamines, for example, phenylenediamine, naphthalenediamine, ethylenediamine, propylenediamine, hexamethylenediamine, isophoronediamine, Dicyclohexylmethane-
4,4'-diamine and the like. Others, such as 2-hydroxyethylethylenediamine, 2-hydroxyethylpropylenediamine, di-2-hydroxyethylethylenediamine, di-2-hydroxyethylpropylenediamine, 2-hydroxypropylethylenediamine, and di-2-hydroxypropylethylenediamine Diamines having a hydroxyl group, dimer diamines obtained by converting carboxyl groups of dimer acid into amino groups, and the like are also examples of amine-based chain extenders.

In the present invention, a chain terminator may be used, if necessary. Examples of the chain terminating agent include various known compounds such as amine-based and lower alcohol-based ones, and amine-based chain terminating agents are preferred because they can easily control the molecular weight. Examples of the amine-based chain terminator include di-
Examples thereof include alkyl monoamines such as n-butylamine and hydroxyl monoamines such as diethanolamine. Examples of the lower alcohol-based chain length terminator include methanol and ethanol.

The method for producing the polyurethane used in the present invention is not particularly limited. For example, a polymer diol and a diisocyanate compound are reacted under an isocyanate group excess condition, and the polymer diol has isocyanate groups at both terminals. A two-stage process in which a prepolymer (preferably 0.5 to 10% isocyanate content) is prepared and then reacted with an amine-based chain extender and optionally a chain-terminator in a suitable solvent, and Any one-step method in which the polymer diol, diisocyanate compound, amine-based chain extender and, if necessary, the chain terminator are reacted at once in a suitable solvent can be adopted, but a uniform polymer solution can be obtained. It is preferable to adopt the two-stage method in that it is easy to use. In the production of these polyurethanes, various known catalysts such as tin-based catalysts such as stannous octylate can be added.

When the polyurethane used in the present invention is produced by a two-step method, the conditions for reacting the high molecular weight diol with the diisocyanate compound are not particularly limited, except that the isocyanate group becomes excessive. / Isocyanate groups in an equivalent ratio of 1 / 1.5 to 1 / 3.5
It is preferable to carry out the reaction so as to fall within the range.

The conditions for reacting the obtained prepolymer with an amine-based chain extender and an optional amine-based chain terminator are not particularly limited, but the amine value of the resulting polyurethane is not limited. It is preferable to set it in the range of 0.1 to 20. For example, in the two-stage method, the polyurethane having the amine value reacts with the isocyanate groups in the chain extender and the chain terminator when the equivalent of the free isocyanate groups at both ends of the prepolymer is 1 equivalent. It can be easily obtained by reacting at a use ratio such that the total equivalent of the amino groups obtained is in the range of 1.01 to 1.5 equivalents. If the amine value is less than 0.1, the adhesion to polyolefin is not sufficient,
When the amine value exceeds 20, the chain extender remains unreacted and odor tends to remain on printed matter.

In preparing the printing ink binder of the present invention, the solvent used is usually an aromatic solvent such as benzene, toluene or xylene which is well known as a printing ink solvent; methanol, ethanol Alcohol solvents such as, isopropanol and n-butanol; ketone solvents such as acetone, methyl ethyl ketone and methyl isobutyl ketone; ester solvents such as ethyl acetate and butyl acetate;
It can be used in a mixture of more than one species. When a non-aromatic solvent-type printing ink is obtained using the printing ink binder of the present invention, a non-aromatic solvent is also used when producing the printing ink binder.

The polyurethane of the present invention thus obtained has a number average molecular weight of usually 5,000 to 100,000,
Preferably, the range is not more than 50,000. When the number average molecular weight is less than 5,000, the drying properties, blocking resistance, film strength, oil resistance, etc. of the printing ink using this as a vehicle are liable to decrease.
If it exceeds 00000, the viscosity of the printing ink binder, which is the polyurethane resin solution, tends to increase, and the gloss of the printing ink tends to decrease. Further, the resin solid content concentration of the polyurethane resin solution is not particularly limited,
It may be appropriately determined in consideration of workability at the time of printing and the like.
It is practically preferable to adjust the temperature to the range of 25 ° C.

In the present invention, if necessary, in addition to the polyurethane which is the main component of the present invention, the following resins may be used in combination as the binder of the present invention as auxiliary components.
For example, polyurethanes, polyamides, nitrocellulose, polyacrylates, polyvinyl chloride, copolymers of vinyl chloride and vinyl acetate, rosin-based resins, ketone resins and the like other than the present invention can be mentioned.

The binder of the present invention is appropriately blended with a colorant, a solvent, and, if necessary, a surfactant, a wax, and other additives for improving the ink fluidity and the surface coating of the ink. Ball mills, attritors, sand mills, etc. The printing ink composition of the present invention can be manufactured by kneading using the conventional ink manufacturing apparatus. As the solvent, those similar to those described in the production of the binder for printing ink can be used. When the printing ink composition of the present invention is used as a non-aromatic solvent-type printing ink, a non-aromatic solvent is used at the time of producing the printing ink binder, and also at the time of producing the printing ink composition. Use a non-aromatic solvent. In the printing ink composition, the compounding amount of the binder of the present invention is preferably such that the resin solid content is 3 to 20% by weight.

[0025]

The binder for printing ink and the printing ink composition of the present invention can be applied to various plastic films such as polyester, nylon film, polyethylene, polypropylene and the like to be printed even when a non-aromatic solvent type printing ink is used. This has the effect of exhibiting excellent adhesiveness. In addition, the 2,4-dialkyl-1,5 of the present invention
-Compared to the case where another similar polyester diol is used as the high molecular weight diol instead of pentanediol, the binder for printing ink and the printing ink composition of the present invention are re-used when a non-aromatic solvent type printing ink is used. Good solubility. For this reason, the printing ink binder and the printing ink composition of the present invention can be replaced with a toluene-type printing ink binder and a printing ink composition in which a chlorinated polypropylene-based resin is blended with a conventional polyurethane. Is also preferred in terms of the effect of

[0026]

EXAMPLES Hereinafter, the present invention will be further described with reference to Production Examples, Examples and Comparative Examples, but the present invention is not limited to these Examples. In each example, parts and% indicate parts by weight and% by weight, respectively.

Example 1 In a four-necked flask equipped with a stirrer, a thermometer and a nitrogen gas inlet tube, a polyesterdiol 560 having an average molecular weight of 2,000 obtained from adipic acid and 2,4-diethyl-1,5-pentanediol was used. 0.0100 parts and 140.0 parts of isophorone diisocyanate at 100 ° C. under a nitrogen stream.
After reacting for a time to produce a prepolymer, 300.0 parts of methyl ethyl ketone was added to obtain 1000 parts of a uniform urethane prepolymer solution. Next, a mixture consisting of 59.5 parts of isophoronediamine, 2.6 parts of di-n-butylamine, 885.6 parts of methyl ethyl ketone and 592.8 parts of isopropyl alcohol was added to the urethane prepolymer solution, and reacted at 50 ° C. for 3 hours. I let it. The polyurethane resin solution A thus obtained had a resin solid content of 30%, an amine value of 3, and a number average molecular weight of 25,000.

Example 2 Using the same reactor as in Example 1, adipic acid and 2,4
-Diethyl-1,5-pentanediol (80% by weight in the glycol component), 2-butyl-2-ethyl-1,3
-Propanediol (20% by weight in the glycol component)
And 600.0 parts of a polyester diol having an average molecular weight of 4000 and isophorone diisocyanate.
0 parts, and reacted at 100 ° C. for 6 hours under a nitrogen stream to produce a prepolymer.
Add 0.0 part of a uniform solution of urethane prepolymer 10
00 parts were obtained. Then 48.1 parts of isophorone diamine,
1.4 parts of di-n-butylamine, methyl ethyl ketone 8
A mixture consisting of 65.9 parts and 582.9 parts of isopropyl alcohol was added and reacted at 50 ° C. for 3 hours. The polyurethane resin solution B thus obtained had a resin solid content concentration of 30%, an amine value of 2, and a number average molecular weight of the polyurethane resin of 40,000.

Example 3 Using the same reactor as in Example 1, adipic acid and 2,4
-Average molecular weight obtained from diethyl-1,5-pentanediol (50% by weight in glycol component) and 1,4-butanediol (50% by weight in glycol component)
The polyester diol (573.0 parts) and isophorone diisocyanate (127.0 parts) were charged and reacted at 100 ° C. for 6 hours under a nitrogen stream to produce a prepolymer, and then methyl ethyl ketone (300.0 parts) was added to the urethane prepolymer homogeneous solution. 1000 parts were obtained. 49.2 parts of isophorone diamine, 1.1 parts of di-n-butylamine,
A mixture consisting of 867.0 parts of methyl ethyl ketone and 583.5 parts of isopropyl alcohol is added and then 5
The reaction was performed at 0 ° C. for 3 hours. The polyurethane resin solution C thus obtained had a resin solid content concentration of 30%, an amine value of 5, and a number average molecular weight of the polyurethane resin of 20,000.

Comparative Example 1 Using the same reactor as in Example 1, polyester diol 56 having an average molecular weight of 2,000 and obtained from adipic acid and 2-butyl-2-ethyl-1,3-propanediol was used.
0.0 part and 140.0 parts of isophorone diisocyanate were charged and reacted at 100 ° C. for 6 hours under a nitrogen stream to produce a prepolymer.
To obtain 1000 parts of a uniform urethane prepolymer solution. A mixture consisting of 59.5 parts of isophoronediamine, 2.6 parts of di-n-butylamine, 885.6 parts of methyl ethyl ketone and 592.8 parts of isopropyl alcohol was added, followed by reaction at 50 ° C. for 3 hours. The polyurethane resin solution D thus obtained had a resin solid content concentration of 30%, an amine value of 3, and a number average molecular weight of the polyurethane resin of 25,000.

Comparative Example 2 Using the same reaction apparatus as in Example 1, adipic acid and 2,2
Polyester diol 56 having an average molecular weight of 2000 and obtained from 4,4-trimethyl-1,6-hexanediol
0.0 part and 140.0 parts of isophorone diisocyanate were charged and reacted at 100 ° C. for 6 hours under a nitrogen stream to produce a prepolymer.
To obtain 1000 parts of a uniform urethane prepolymer solution. A mixture consisting of 59.5 parts of isophoronediamine, 2.6 parts of di-n-butylamine, 885.6 parts of methyl ethyl ketone and 592.8 parts of isopropyl alcohol was added, followed by reaction at 50 ° C. for 3 hours. The polyurethane resin solution E thus obtained had a resin solid content concentration of 30%, an amine value of 3, and a number average molecular weight of the polyurethane resin of 25,000.

Comparative Example 3 Using the same reactor as in Example 1, 560.0 parts of a polyester diol having an average molecular weight of 2,000 obtained from adipic acid and 3-methyl-1,5-pentanediol and 140.0 parts of isophorone diisocyanate Was prepared and reacted at 100 ° C. for 6 hours under a nitrogen stream to produce a prepolymer. Then, 300.0 parts of methyl ethyl ketone was added to obtain 1000 parts of a uniform urethane prepolymer solution. 59.5 parts of isophorone diamine, 2.6 of di-n-butylamine
And a mixture consisting of 885.6 parts of methyl ethyl ketone and 592.8 parts of isopropyl alcohol, and then reacted at 50 ° C. for 3 hours. The polyurethane resin solution F thus obtained has a resin solid content concentration of 30%, an amine value of 3, and a number average molecular weight of the polyurethane resin of 25,000.
Met.

Using the polyurethane resins A to F obtained in Examples 1 to 3 and Comparative Examples 1 to 3, a mixture having the following composition was kneaded with a paint shaker to prepare a white printing ink.

(Preparation of white printing ink) Titanium white (rutile type) 30 parts Polyurethane resins A to F 40 parts Methyl ethyl ketone 10 parts Isopropyl alcohol 10 parts Ethyl acetate 10 parts

To the obtained white printing ink, 35 parts of methyl ethyl ketone and 15 parts of isopropyl alcohol were further added to adjust the viscosity, and white inks were prepared, respectively, and evaluated by the following tests.

(Redissolution Test) The white ink was spread on a stretched polypropylene film (OPP) film with a bar coater (No. 18) and dried with a heat gun for 30 seconds (about 60 ° C.). After drying, the weight ratio of methyl ethyl ketone / isopropyl alcohol / ethyl acetate is 1: 1: 1.
And then taken out for 1 hour and dried at room temperature. The samples were evaluated in five stages of 〜 to × in order from the sample in which the ink dissolved well. Table 1 shows the results.

(Adhesion test) The obtained white ink was printed on one surface of a stretched polypropylene film (OPP), a nylon film (NY), and polyethylene terephthalate (PET) using a bar coater (No. 4). 4
It dried at 0-50 degreeC, and obtained the printing film. Then, an 18-mm-wide adhesive tape (registered trademark cellophane tape) manufactured by Nichiban Co., Ltd. was attached on the printing surface of the obtained printing film, and one end of the adhesive tape was rapidly peeled off at a right angle to the printing surface. The state of the printing surface at that time was observed. If the ink on the printed surface did not come off at all, mark "○", 40
% Or less was evaluated as “△”, and less than 40% was evaluated as “x”. Table 1 shows the results.

[0037]

[Table 1]

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J034 CA02 CA04 CA13 CA34 CB01 CB03 CB04 CB07 CB08 CC03 CC08 CC09 CD04 CD06 DA01 DB04 DB07 DF02 DF11 DF16 DF20 DF22 DF29 DG03 DG04 DG06 DG08 DG06 GA01 HA18 HB12 HC03 HC09 HC12 HC13 HC17 HC18 HC22 HC46 HC52 HC61 HC64 HC67 HC71 HC73 JA02 JA14 JA30 QA05 QA07 QC05 RA07 4J038 DG051 DG111 DG271 DG281 GA09 GA11 LA03 MA07 NA12 PB02 4J039 AE04 CA04 EA36 FA02

Claims (11)

[Claims] 1. A printing ink binder mainly comprising a polyurethane obtained by reacting a polymer diol, a diisocyanate compound and an amine-based chain extender, wherein 2,
A binder for a printing ink, comprising a 4-dialkyl-1,5-pentanediol. 2. A printing ink binder mainly containing a polyurethane obtained by reacting a polymer diol, a diisocyanate compound and an amine chain extender, wherein the polymer diol is 2,4-dialkyl-1,2 A binder for printing ink, comprising a polyester diol comprising a glycol component (A) containing 5-pentanediol and a dibasic acid component (B). 3. The method according to claim 2, wherein the glycol component (A) is 2,4-
Dialkyl-1,5-pentanediol must be at least 3
3. The binder for a printing ink according to claim 2, which contains 0% by weight. 4. The polyester diol according to claim 2, wherein the number average molecular weight of the polyester diol is from 500 to 5,000.
Or a binder for a printing ink according to item 3. 5. The printing ink binder according to claim 1, wherein the 2,4-dialkyl-1,5-pentanediol has 7 to 21 carbon atoms. 6. The printing ink binder according to claim 1, wherein the 2,4-dialkyl-1,5-pentanediol is 2,4-diethyl-1,5-pentanediol. 7. The polyurethane having a number average molecular weight of 50.
2. The composition according to claim 1, wherein the number is from 100 to 100,000.
7. The binder for a printing ink according to any one of 6. 8. The polyurethane having an amine value of 0.1 to 0.1.
The binder for a printing ink according to any one of claims 1 to 7, wherein the binder is 20. 9. The binder for a non-aromatic solvent-type printing ink according to claim 1. 10. A printing ink composition comprising the printing ink binder according to claim 1. 11. A non-aromatic solvent-type printing ink composition comprising the binder for a non-aromatic solvent-type printing ink according to claim 9, and using a non-aromatic solvent as a solvent. object.