JPH06179846A - Resin composition for printing ink - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a resin composition for printing ink, which has excellent adhesiveness to various plastic films and further has excellent post-processability. [Structure] Monomer (a) having a tertiary amino group and one primary amino group in the molecule, and chlorinated polypropylene resin (b) having at least one epoxy group in the molecule
And the ratio of the number of functional groups of epoxy group / primary amino group is 1.0
A resin composition for printing ink, which comprises a modified chlorinated polypropylene resin (A) and a polyurethane resin (B) which are reacted in the range of 1.3 to 1.3. [Effect] A resin composition for printing ink having excellent adhesiveness to various plastic films, and further having excellent properties such as storage stability, suitability for laminating (particularly suitability for PP direct laminating), suitability for boil and retort. The thing was obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing ink resin composition, and more particularly to a printing ink resin composition which is particularly useful for coating various plastic films, plastic sheets or synthetic resin molded articles.

[0002]

2. Description of the Related Art In recent years, with the diversification of objects to be packaged and the sophistication of packaging technology, when various plastic films are used as packaging materials, printing is applied to the plastic films for decoration or surface protection. However, printing inks for such printing are required to have high performance and quality. In particular, in order to make packaging containers more beautiful and sophisticated, it is necessary to have a wide range of adhesiveness to various composite films and further various post-processing suitability, such as various laminating suitability, boil suitability, retort suitability, etc. It has become to.

Generally, methods such as gravure printing and flexographic printing are used for printing plastic films and the like.
In the case of film printing as a packaging material, most of them are winding methods, so the printing ink is required to have fast drying properties,
When used as food packaging, it is required that the residual solvent content is low. In addition, in order to improve the performance of packaging materials, dry lamination using an adhesive such as urethane or extrusion lamination using an anchor coating may be applied after printing, so that strength and airtightness are Taking advantage of the fact that it is superior to films, films such as polyester and nylon can be laminated by laminating polyethylene films or polypropylene films.

In lamination, an aluminum foil may be interposed in the middle, and a packaging material that can be boiled or retorted may be used. In addition, although strength up to retort processing is not required, in the field of packaging materials based on transparent substrates, oriented polypropylene (OPP)
A base material film is used as a base film, and a laminating method of directly coating with molten polypropylene without using an anchor coating agent (generally called PP direct laminating) is also performed.

In order to carry out such post-processing, it is required that the printing ink used in the preceding step has not only the adhesiveness to various substrate films and printability but also the suitability for each post-processing. However, such various suitability is mainly determined by the binder resin used in the printing ink. Conventionally, as a binder for printing ink, a polyurethane resin has been used as it has a wide range of suitability for base materials such as nylon, polyester and the like. On the other hand, a chlorinated polyolefin having a relatively low degree of chlorination such as chlorinated polypropylene is used for the polyolefin to be subjected to PP direct lamination.

However, the printing ink having a polyurethane resin as a binder has sufficient adhesiveness to nylon films and polyester films alone, but to polyolefin films such as polyethylene films and polypropylene films, which are general-purpose films. Still lacks sufficient adhesion, and is suitable for laminating,
In particular, there is a problem that the PP direct laminating suitability is insufficient. On the other hand, a printing ink using a chlorinated polyolefin as a binder shows good adhesiveness to a polyolefin film, but does not show sufficient adhesiveness to a nylon film or a polyester film, so that the base film is limited. Moreover, although it has PP direct laminating suitability, it has no boil suitability and retort suitability, and its use is limited.

For the purpose of improving the adhesiveness to polyolefin films, nylon films and polyester films and also having various laminating suitability, particularly PP direct laminating suitability, it has been attempted to mix chlorinated polyolefin and polyurethane resin. However, the compatibility of both is poor, and the printing ink using this as a binder is insufficient in stability, printability, boilability, and retort suitability, and is difficult to use. As described above, in conventional printing inks, even if the base film is limited or has general versatility with respect to the base film, the adhesiveness is insufficient, and laminating or boiling or retorting is performed. It did not have sufficient suitability for. Therefore, it is necessary to manufacture a printing ink containing a binder suitable for each base film, various laminating process, retort process, etc. each time. There was a big problem in inventory control of materials and inks.

[0008]

DISCLOSURE OF THE INVENTION As a result of intensive studies to solve the above problems, the present inventors have found that a monomer having a tertiary amino group and one primary amino group in the molecule and a molecule It has been found that a printing ink containing a modified chlorinated polypropylene resin obtained by reacting a chlorinated polypropylene having at least one or more epoxy groups therein and a polyurethane resin can solve all the above problems, and the present invention It came to completion.

[0009]

Means for Solving the Problems That is, the present invention provides a monomer (a) having a tertiary amino group and one primary amino group in a molecule and chlorine having at least one epoxy group in the molecule. Ink containing a modified chlorinated polypropylene resin (A) and a polyurethane resin (B) obtained by reacting a modified polypropylene resin (b) with an epoxy group / primary amino group functional group ratio in the range of 1.0 to 1.3. A resin composition for use is provided.

The monomer (a) having a tertiary amino group and one primary amino group in the molecule is represented by the following general formula. In the formula, R ₁ is a C ₁ -C ₅ alkyl group, and A is —CH— or —CH.
-O-, R ₂ represents an alkyl group of H or C ₁ -C _3. Further, m and n are independently in the range of 0 to 9, and (m +
The range of n) is 0-9. In the range of more than this range, the polarity of the modified chlorinated polypropylene resin becomes small, so that the compatibility with the polyurethane resin becomes insufficient and it becomes difficult to obtain the intended effect.

Specific examples of the monomer (a) include 2-dimethylaminoethylamine (A-1) represented by the following chemical formula:
2-Diethylaminoethylamine (A-2), 3-Dimethylaminopropylamine (A-3), 3-Diethylaminopropylamine
(A-4), 3-dibutylaminopropylamine (A-5), 6- (dimethylamino) 5-methylhexamethyleneamine (A-6), 6-
(Diethylamino) 3-methylhexamethyleneamine (A-
In addition to alkylamines such as 7), ether group-containing amine compounds such as 3-dimethylaminoethoxypropylamine (A-8) and 3-diethylaminoethoxypropylamine (A-9) can be exemplified, but of course they are not limited to these. It is not something that will be done.

(CH ₃ ) ₂ N − CH ₂ —CH ₂ —NH ₂ (A-1) (C ₂ H ₅ ) ₂ N − CH ₂ —CH ₂ —NH ₂ (A-2) (CH ₃ ) _{2 N - CH 2 -CH 2 -CH 2} -NH 2 (A-3) (C 2 H 5) 2 N - CH 2 -CH 2 -CH 2 -NH 2 (A-4) (C 4 H 9) 2 _{N - CH 2 -CH 2 -CH 2} -NH 2 (A-5)

[0013]

As the chlorinated polypropylene resin (b), a commercially available chlorinated polypropylene resin containing an epoxy group can be used, and the epoxy equivalent represented by the resin weight per epoxy group is the resin solid content. 3
It is preferably from 00 to 3,000, more preferably from 500 to 1,500. If the epoxy equivalent is 3,000 or more,
It is difficult to obtain the compatibilizing effect with the polyurethane resin by the modification with the monomer (a), and when it is 300 or less, the amount of the tertiary amino group introduced becomes too large, so that the water resistance of the coating film decreases, and further, It is not preferable because it causes a decrease in laminate strength. The degree of chlorination of the chlorinated polypropylene resin (b) is preferably 10 to 60, more preferably 15 to 45. If the degree of chlorination is less than 10, the solubility in organic solvents is low, and if it exceeds 60, the adhesion to polyolefin films and other substrates is reduced and PP direct laminating strength cannot be obtained. Further, the chlorinated polypropylene (b) having a weight average molecular weight of 3,000 to 200,000, preferably 5,000 to 100,000 is used. When the weight average molecular weight is less than 3,000, the blocking resistance and the adhesion to the substrate are deteriorated, and when it is 200,000 or more, the compatibility with the polyurethane resin is poor and the object of the present invention cannot be achieved.

The modified chlorinated polypropylene resin (A) of the present invention is prepared by using the monomer (a) and the chlorinated polypropylene resin (b) as raw materials under the conditions of a reaction temperature of 30 to 120 ° C. and a reaction time of about 0.5 to 20 hours. Obtained by reacting. The ratio of chlorinated polypropylene (b) and monomer (a) is
The ratio of the number of functional groups of epoxy group / primary amino group is 1.0 to 1.
The range is 3, and more preferably the range is 1.0 to 1.1. Epoxy group / primary amino group functional group ratio is 1.3
If it exceeds, not only the desired effect of compatibilization becomes difficult to obtain, but also the epoxy group remains in excess, so that the stability over time after printing ink becomes unstable, and the ratio of the number of functional groups is 1.0. If it is less than the above range, the monomer (a) remains, which is not preferable in terms of hygiene of the printed matter.

The weight average molecular weight of the modified chlorinated polypropylene resin (A) thus obtained is usually 3,100 to 200,
000 range, more preferably 5,000 to 120,000
Is. If it is less than 3,100, the blocking resistance tends to decrease, and if it exceeds 200,000, the compatibility with the polyurethane resin decreases, which is not preferable.

The polyurethane resin (B) is not particularly limited, and various known polyurethane resins can be used as they are. As a typical synthesis method of polyurethane resin,
Examples thereof include a method in which a polymer polyol and a diisocyanate compound are reacted, and then various known diamines or glycols as chain extenders and, if necessary, a terminal terminating agent such as monoamine or monoalcohol are used.

As the polymer polyol, various known ones generally known as a polymer polyol component of polyurethane can be used. For example, polyether polyols such as polymers or copolymers of ethylene oxide, propylene oxide, tetrahydrofuran, etc .; 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, 1,6-hexanediol, octanediol, 1,4-butyldiol, dipropylene glycol Saturated and unsaturated low molecular weight glycols such as or n-butyl glycidyl ether, alkyl glycidyl ethers such as 2-ethylhexyl glycidyl ether, monocarboxylic acid glycidyl esters such as versatic acid glycidyl ester, and adipic acid, maleic acid , Fumaric acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid,
Polyester polyols obtained by dehydration condensation of dibasic acids such as oxalic acid, malonic acid, glutaric acid, pimelic acid, azelaic acid, sebacic acid and suberic acid, or their corresponding acid anhydrides and dimer acids; cyclics Examples thereof include polyester polyols obtained by ring-opening polymerization of ester compounds; other polycarbonate polyols, polybutadiene glycols, glycols obtained by adding ethylene oxide or propylene oxide to bisphenol A, and the like.

In the case of a polymer polyol obtained from a glycol and a dibasic acid among the above polymer polyols, up to 5 mol% of the glycol is contained, for example, glycerin, trimethylolpropane, trimethylolethane. , 1,2,6-hexanetriol, 1,2,4-butanetriol, sorbitol, pentaerythritol and the like. The molecular weight of the polymer polyol is appropriately determined in consideration of the solubility, drying property, blocking resistance, etc. of the resulting polyurethane, and is usually in the range of about 400 to 10,000, preferably 700 to 6,000. . When the molecular weight is less than 400, the printability tends to decrease with the decrease in solubility, and when it exceeds 10,000, the drying property and blocking resistance tend to decrease.

As the diisocyanate compound, various known aromatic, aliphatic or alicyclic diisocyanates can be used. 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, isopropylene diisocyanate, methylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 2,4,4-trimethylhexamethylene Diisocyanate, cyclohexane-1,4-diisocyanate, xylylene diisocyanate, isophorone diisocyanate, lysine diisocyanate, dicyclohexylmethane-4,4'-diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, methylcyclohexanediisocyanate, m-tetramethylxylyl Representative examples thereof include diisocyanate and dimerisocyanate obtained by converting the carboxyl group of dimer acid into an isocyanate group.

As the chain extender, various known diamines and glycols can be used. Examples of the diamines include ethylenediamine, propylenediamine, hexamethylenediamine, triethylenetetramine, diethylenetriamine, isophoronediamine, dicyclohexylmethane-4,4'-diamine, 2-hydroxyethylethylenediamine, 2-hydroxyethylpropylenediamine,
Di-2-hydroxyethylethylenediamine, di-2-hydroxyethylpropylenediamine, 2-hydroxypropylethylenediamine, di-2-hydroxypropylethylenediamine and other diamines having a hydroxyl group in the molecule, and the carboxyl group of dimer acid as an amino group. Representative examples thereof include converted dimer diamine and the like. As glycols, 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,
1,6-hexanediol, octanediol, 1,4-butyldiol, various known saturated and unsaturated low-molecular-weight glycols such as dipropylene glycol and dimer diol obtained by converting the carboxyl group of dimer acid into a hydroxyl group, As a representative example thereof.

Further, a reaction terminator may be used. Examples of such a reaction terminator include dialkylamines such as di-n-butylamine and alcohols such as ethanol and isopropyl alcohol. The method for producing the polyurethane resin is not particularly limited, and the polyurethane resin may be produced according to a method similar to a general method for producing a polyurethane resin. For example, a polymer polyol and a diisocyanate compound are subjected to a urethanization reaction under the condition that the ratio of the number of functional groups of isocyanate group / hydroxyl group is 1.3 / 1 to 3.0 / 1 to give a prepolymer having an isocyanate group (preferably a free isocyanate content of 0.5 to 10% by weight)
Are prepared, and then these are reacted with a chain extender and, if necessary, a reaction terminator in a suitable solvent, but it is also possible to react the above compounds all at once. As the solvent used in the above-mentioned production method, aromatic solvents such as benzene, toluene and xylene, alcohol solvents such as methanol, ethanol, isopropanol and n-butanol, which are generally known as solvents for printing inks, are used. , Ketone solvents such as acetone, methyl ethyl ketone and methyl isobutyl ketone, and ester solvents such as ethyl acetate and butyl acetate, and these are used alone or in a mixture of two or more kinds.

The molecular weight of the polyurethane resin obtained as described above is 5,000 to 200,000, more preferably 10,000.
Those of ˜150,000 are preferred. Dryness below 5,000,
Blocking resistance, film strength, and oil resistance tend to decrease, and if it exceeds 200,000, the viscosity of the resin solution tends to increase and the pigment dispersibility tends to decrease, such being undesirable.

In the resin composition for a printing ink of the present invention, the mixing ratio of the modified chlorinated polypropylene resin (A) and the polyurethane resin (B) is such that the weight ratio of the solid component thereof is the weight ratio.
A / B is in the range of 3/97 to 50/50, preferably 10/90 to 40/60
Within the range of. Modified chlorinated polypropylene resin (A)
If the content of is less than 3% by weight, it is difficult to obtain the PP direct laminating strength, and if it exceeds 50% by weight, the adhesion to polyester, nylon, etc. is deteriorated and it becomes difficult to obtain the suitability for boiling and retorting. Absent.

When producing a printing ink containing the resin composition of the present invention, various pigments and the above solvent are added to the above modified chlorinated polypropylene resin (A) and polyurethane resin (B) to form a kneaded meat or a dispersion. If necessary, additives such as antiblocking agents, plasticizers, surfactants for improving ink fluidity and dispersibility, or compatible nitrification cotton, chlorinated polyethylene, chlorinated ethylene /
Resins such as chlorinated polyolefins such as propylene, chlorosulfonated polyolefins, ethylene / vinyl acetate copolymers, or their chlorinated or chlorinated sulfonates, maleic acid resins, vinyl chloride / vinyl acetate copolymers can be used in combination. . The resin solid content concentration in the printing ink is appropriately determined in consideration of workability at the time of printing, printing effect, etc., and is not particularly limited, but usually 3
It is recommended to adjust to ~ 50% by weight.

[0026]

The present invention is described in detail below with reference to examples and comparative examples, but the present invention is not limited to these examples. In addition, "part" and "%" in the examples
Represents "part by weight" and "% by weight", respectively. [Production Example 1] A four-necked flask equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen gas inlet tube was charged with a chlorinated polypropylene containing an epoxy group (Toray Kasei Co., Ltd. Hardlen B-
4000, epoxy equivalent 700 per resin solid component, chlorination degree 25
%, Molecular weight 15,000, 40% toluene solution) 1,750 parts, 3-diethylaminopropylamine 130 parts and toluene 195 parts are charged and reacted at 80 ° C. for 6 hours to obtain a modified chlorinated polypropylene resin solution A having a resin solid content concentration of 40%. Obtained.

Production Example 2 A reactor similar to Production Example 1 was charged with chlorinated polypropylene (Hardlene B-4000) 2,100.
Parts, 6- (diethylamino) 3-methylhexamethyleneamine (186 parts) and toluene (279 parts) were charged and reacted at 80 ° C. for 6 hours to obtain a modified chlorinated polypropylene resin solution B having a resin solid content concentration of 40%.

[Production Example 3] A chlorinated polypropylene (manufactured by Toyo Kasei Co., Ltd.
B-2038, Epoxy equivalent per resin solid component 700, degree of chlorination
16%, molecular weight 40,000, 35% toluene solution) 2,000 parts, 3-
174 parts of diethylaminoethoxypropylamine and 11 parts of toluene were charged and reacted at 80 ° C. for 6 hours to obtain a modified chlorinated polypropylene resin solution C having a resin solid content concentration of 40%.

[Production Example 4] In Production Example 1, 130 parts of 3-diethylaminopropylamine and 195 parts of toluene, 241 parts of di-n-octylamine and toluene, respectively.
A modified chlorinated polypropylene resin solution D having a resin solid content concentration of 40% was obtained by performing the reaction under the same conditions except for 362 parts.
Got

[Production Example 5] In Production Example 3, the reaction was carried out under the same conditions except that the charged amounts of 3-diethylaminoethoxypropylamine and toluene were changed to 90 parts and 167 parts, respectively, and the resin solids concentration A 35% modified chlorinated polypropylene resin solution E was obtained.

Production Example 6 In Production Example 1, the charged amounts of 3-diethylaminopropylamine and toluene were
A modified chlorinated polypropylene resin solution F having a resin solid content concentration of 40% was obtained by performing the reaction under the same conditions except that 260 parts and 390 parts were used, respectively.

[Production Example 7] A reactor similar to that of Production Example 1 was charged with 1,000 parts of a polyester diol having a molecular weight of 2,000 obtained from adipic acid and 3-methyl-1,5-pentanediol and 222 parts of isophorone diisocyanate. The reaction was carried out at 85 ° C for 6 hours under a stream of air. Next, isophoronediamine 82 parts, di-n-butylamine 7.8 parts, toluene
1,244 parts, 1,244 parts of methyl ethyl ketone and 573 parts of isopropyl alcohol were added and reacted under stirring at 50 ° C. for 3 hours to obtain a polyurethane resin solution G having a solid content of 30%, a viscosity at 25 ° C. of 350 cps and a molecular weight of 48,000.

[Production Example 8] A reactor similar to that of Production Example 1 was charged with 1,000 parts of polycaptolactone having a molecular weight of 2,000 and 222 parts of isophorone diisocyanate, and the mixture was placed under a nitrogen stream.
The reaction was carried out at 90 ° C for 6 hours. Then isophorone diamine
82.0 parts, di-n-butylamine 12.9 parts, toluene 1,300
Parts, 1,300 parts of methyl ethyl ketone and 615 parts of isopropyl alcohol were added, and the mixture was reacted with stirring at 30 ° C for 3 hours. Resin solid content concentration 30%, viscosity 700 cps / 25 ° C, molecular weight 6
5,000 polyurethane resin solution H was obtained.

[Examples 1 to 4 and Comparative Examples 1 to 5] The modified chlorinated polypropylene resin solutions obtained in Production Examples 1 to 8 and polyurethane resin solutions were mixed at the compounding ratio shown in Table 1, and toluene was further added. In each case, the resin solid content (total of modified chlorinated polypropylene and polyurethane resin) is 30% by weight
The binder for printing ink was adjusted so that Furthermore, 40 parts of the obtained printing ink binder, titanium oxide
A white printing ink was prepared by kneading a mixture of 30 parts, 15 parts of toluene and 15 parts of methyl ethyl ketone, and the obtained printing ink was mixed with a mixed solvent of toluene, methyl ethyl ketone and isopropyl alcohol (weight ratio: 60:30:10). The viscosity is adjusted with a gravure proofing machine equipped with a plate depth of 35 μm gravure plate, and printed on a corona-treated stretched polypropylene film (OPP), a corona-treated polyethylene terephthalate film (PET) and a corona-treated nylon film (NY) at 40 ° C. It was dried at 50 ° C to obtain a printed film. The printing inks using the binders of Comparative Examples 1 and 2 gelled after 1 day and were excluded from printing. The obtained printed film was evaluated for adhesiveness, extrusion laminating strength, dry laminating strength, suitability for boil and retort, and suitability for PP direct laminating. The results are shown in Table 2. The evaluation was performed by the following test method.

1) Adhesiveness After the above printed matter was left for one day, cellophane tape was attached to the printed surface, and the appearance of the printed film when it was rapidly peeled off was visually judged. The criteria for judgment are as follows. ⊚: The printed film did not peel off at all. ○: 80% or more of the printed film remained on the film. Δ: 50 to 80% of the printed film remained on the film. X: 50% or less of the printed film remained on the film.

2) Extrusion laminating strength Among the above-mentioned printed matters, polyethylene imine-based anchor coating agents are used for OPP and isocyanate-based anchor coating agents are used for PET and NY, and molten polyethylene is laminated by an extrusion laminating machine. After aging at 40 ° C for 3 days, the sample is
It was cut into a width of 15 mm and the T-type peel strength was measured.

3) Dry Lamination Strength A urethane adhesive is used for the above-mentioned printed matter, a CPP (unstretched polypropylene) film is laminated by a dry laminating machine, and after aging at 40 ° C. for 3 days, the same method as extrusion laminating strength is used. The peel strength was measured with.

4) Boil suitability and retort suitability After the above NY printed matter is dry-laminated, the laminate is made into a bag, and a mixture of water / salad oil is put in as a content and sealed, and the boil suitability is 100 ° C. for 30 minutes, retort. Regarding suitability, after heating at 120 ° C for 30 minutes, the presence or absence of lami floating was visually judged from the appearance. The criteria for judgment are as follows. ○: There is no lami floating. X: Delamination occurred on the entire surface.

5) Suitability for PP direct laminating The above-mentioned OPP printed matter was directly laminated with molten polypropylene by an extrusion laminating machine, and after 2 days, the peel strength was measured by the same method as the extrusion laminating strength. 6) Storage stability The printing ink was sealed in a metal can, and the properties such as separation, precipitation or gelation when stored at 25 ° C for 14 days were visually evaluated. The criteria for judgment are as follows. ○: No abnormality ×: Separation, precipitation or gelation is severe.

[0040]

[Table 1]

[0041]

[Table 2]

[0042]

According to the present invention, it has excellent adhesiveness to any of various plastic films such as polyester, nylon, polyethylene and polypropylene used as a material to be printed, storage stability and suitability for laminating. It is possible to provide a resin composition for printing ink having excellent properties (especially PP direct laminating suitability), boil processing suitability and retort processing suitability.

Claims (3)

[Claims] 1. A monomer (a) having a tertiary amino group and one primary amino group in the molecule and at least 1 in the molecule.
A modified chlorinated polypropylene resin (A) and a polyurethane resin obtained by reacting a chlorinated polypropylene resin (b) containing at least one epoxy group with the ratio of the number of functional groups of epoxy group / primary amino group in the range of 1.0 to 1.3. (B) is included, The resin composition for printing inks characterized by the above-mentioned. 2. The resin composition for a printing ink according to claim 1, wherein the modified chlorinated polypropylene resin (A) has a weight average molecular weight of 3,100 to 200,000. 3. The weight ratio A / B of the modified chlorinated polypropylene resin (A) and the polyurethane resin (B) is 3/97 to 50/5.
The resin composition for printing ink according to claim 1 or 2, which has a range of 0.