JPH0890901A - Recording material - Google Patents

Abstract

(57) [Summary] [Purpose] To impart good water resistance to a recording material used for inkjet recording and the like. [Configuration] at least on a surface of a substrate such as paper, formula (I) in _{C m H 2m + 1 -X (} I) [wherein, m represents an integer of 10 to 14, -X has the formula (II)
Or (III) In which ring A may be further condensed with a benzene ring, n represents an integer of 1 to 4, and R ^{1 to} R ⁵ each independently represent alkyl having 1 to 3 carbon atoms. ] A recording material is prepared by incorporating a compound having a quaternary ammonium ion represented by [Effect] When the recording material is recorded on the recording material by an inkjet method or the like, the obtained printed image exhibits good water resistance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording material such as recording paper, which is suitable for recording with an aqueous ink, particularly for ink jet recording.

[0002]

2. Description of the Related Art An ink jet recording system is one in which minute droplets of ink are generated and ejected according to various operating principles, and the droplets are attached to a recording material such as paper for recording. Since this system is capable of high-speed printing, has a low noise level, and is easily multicolored, it is used for various purposes as a recording device for color images and is rapidly spreading. Along with this, more advanced characteristics are required for recording materials for inkjet.

The recording material is required to have the following characteristics, for example.

Absorbs ink quickly and prevents bleeding, has high print density and is excellent in ink color development, does not cause slack in the sheet even when absorbing a large amount of ink, and The printed part is water resistant, and even if water adheres, the image does not bleed or run off.

Various proposals have been made so far in order to satisfy such various requirements, but particularly in water resistance, they have not yet fully satisfied the requirements of the market.

As a conventionally known remedy, a method of incorporating a cationic surfactant into a recording material (Japanese Patent Laid-open No. Sho 61-96).
56-99693) or a method of incorporating a cationic polymer such as poly (diallyldimethylammonium chloride) into the recording material (Japanese Patent Laid-Open No. 59-20696). The water resistance of the parts was not always satisfactory.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording material which has a high printing density and is excellent in the color development of the ink, and in particular, can impart excellent water resistance to the printed portion. is there. The present inventors have conducted extensive research to achieve such an object, and as a result, have found that excellent performance can be obtained by incorporating a specific quaternary ammonium compound into the base material, and completed the present invention.

[0008]

The present invention is based on the formula (I) on at least the surface of a substrate.

C _m H _{2m + 1-} X (I)

[In the formula, m represents an integer of 10 to 14,
X is of formula (II) or (III)

[0011]

Wherein ring A may be further condensed with a benzene ring, n represents an integer of 1 to 4, and R ¹ , R ² , R ³ , R ⁴ and R ⁵ Independently of each other represents alkyl having 1 to 3 carbon atoms], and provides a recording material containing a compound having a quaternary ammonium ion.

A feature of the present invention is that a cationic surfactant or a quaternary ammonium compound is a specific one, that is, an alkyl having 10 to 14 carbon atoms is bonded to a nitrogen atom, and the nitrogen atom has the formula ( A compound forming an aromatic heterocycle such as II) or forming a diammonium salt such as formula (III) is contained in the base material constituting the recording material. By including such a specific compound in the substrate, the water resistance of the printed portion is particularly improved.

When -X in the formula (I) is an aromatic heterocyclic group represented by the formula (II), examples of such a group include a pyridinium group derived from pyridine, a quinolinium group derived from quinoline and an isoquinoline. The isoquinolinium group derived from is mentioned. When -X in the formula (I) is a group represented by the formula (III), R ¹ , R
Each of ² , R ³ , R ⁴ and R ⁵ may be an alkyl having 1 to 3 carbon atoms, but normally, each is preferably methyl.

As -X in the formula (I), among the groups represented by the formula (II) and the group represented by the formula (III), the group represented by the formula (II) is preferable, and a quinolinium group is particularly preferable. Alternatively, an isoquinolinium group is preferable.

The counterion of the quaternary ammonium ion represented by the formula (I) may be either an inorganic acid or an organic acid anion. Examples of the anion of the inorganic acid include chloride ion, bromide ion, sulfate ion and phosphate ion, and examples of the anion of the organic acid include acetate ion, formate ion and oxalate ion.

In the present invention, the fourth compound represented by the formula (I)
The compounds having a primary ammonium ion may be used alone or in combination of two or more kinds.

As the base material of the recording material containing the compound having the quaternary ammonium ion of the formula (I),
Typically, paper can be used, but cloth, resin film, synthetic paper and the like can also be used.

In the present invention, the compound having the quaternary ammonium ion of the formula (I) may be present at least on the surface of the base material, and, of course, may be present on the surface of the base material as well as inside thereof. It doesn't matter. Such formula (I)
In incorporating the compound having a quaternary ammonium ion described above in at least the surface of the substrate, for example, a method of adding this compound to an impregnating solution, impregnating the substrate with the compound, and treating A method in which the coating liquid is applied to the surface of the base material using a normal coating device such as a roll coater, a reverse roll coater, an air knife coater, a blade coater, or a spray coater and then dried can be applied.

Other components may be used in combination with the impregnating solution or the coating solution. For example, known finely divided silicic acid, clay, talc, diatomaceous earth, calcium carbonate,
Barium sulfate, titanium oxide, zinc oxide, satin white, inorganic pigments such as aluminum silicate, starch, gelatin, casein, gum arabic, sodium alginate, carboxymethyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, sodium polyacrylate,
Water-soluble polymers such as polyacrylamide, synthetic rubber latex, synthetic resin emulsions such as ethylene vinyl acetate emulsion, and further dispersants, fluorescent dyes, pH adjusters, defoamers, lubricants, surfactants Various additives such as

The compound having the quaternary ammonium ion of the formula (I) is suitably contained in an amount of 0.01 to 10 g, and more preferably 0.1 to 5 g, per 1 m ² of the base material. More preferably, it is included. If the content of this compound is too low, the effects such as water resistance aimed at by the present invention will not be sufficiently exhibited. Further, even if the content of this compound is too large, the effect does not increase so much, which causes economical inconvenience.

[0022]

The recording material of the present invention thus obtained is
The ink is fixed rapidly and gives a clear recorded image without bleeding, and the obtained recorded image shows excellent water resistance.

[0023]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

Example 1

An ordinary high-quality paper having a basis weight of 80 g / m ² and a Steckigt sizing degree of 30 seconds was used as a base material.
After immersing in a 1.0 wt% aqueous solution of dodecylisoquinolinium bromide and removing the liquid, heat treatment was performed at 110 ° C. for 30 seconds with a heat press machine to obtain N-dodecylisoquinolinium bromide 0.25 g / A recording material impregnated with m ² was obtained. On the other hand, the same substrate was immersed in a 2.0% by weight aqueous solution of N-dodecylisoquinolinium bromide and then treated in the same manner as above to obtain a recording material having an impregnation amount of 0.5 g / m ² . On these recording materials, Canon color printer BJC-600J
Was used for ink jet recording. The water resistance of the obtained image was evaluated as follows, and the results are shown in Table 1.

Water resistance evaluation method The recorded sample was allowed to stand in a thermostatic chamber at a temperature of 25 ° C. and a relative humidity of 60% for half a day or more, and then a drop of water was dropped on the printed portion.
After leaving still until completely dried, the degree of bleeding of the print was visually determined according to the following criteria.

⊚: No print bleeding and no ink strikethrough ◯: Almost no print bleeding and slight ink strikethrough. Δ: Bleeding of the print is severe, and the print trace can be slightly read. X: The print is completely erased, and print marks cannot be confirmed.

Example 2

A recording material was prepared in the same manner as in Example 1 except that N-dodecylpyridinium chloride was used instead of N-dodecylisoquinolinium bromide used in Example 1. Inkjet recording and water resistance evaluation of the printed part were carried out in the same manner as in Example 1, and the results are shown in Table 1.

Example 3

Instead of the N-dodecylisoquinolinium bromide used in Example 1, N-dodecyl-N, N,
A recording material was prepared in the same manner as in Example 1 except that N ′, N ′, N′-pentamethyltrimethylene diammonium dichloride was used. Inkjet recording and water resistance evaluation of the printed part were carried out in the same manner as in Example 1, and the results are shown in Table 1.

Comparative Example 1

The general high-quality paper used in Example 1 was used as it was as a substrate without any treatment, and water resistance evaluation of the ink jet recording and the printed portion was carried out in the same manner as in Example 1. The results are shown in Table 1.

Comparative Example 2

A recording material was prepared in the same manner as in Example 1 except that N-octadecylpyridinium chloride was used instead of N-dodecylisoquinolinium bromide used in Example 1. Inkjet recording and water resistance evaluation of the printed part were carried out in the same manner as in Example 1, and the results are shown in Table 1.

Comparative Example 3

A recording material was prepared in the same manner as in Example 1 except that tetradecyldimethylbenzylammonium chloride was used instead of N-dodecylisoquinolinium bromide used in Example 1. Inkjet recording and water resistance evaluation of the printed part were performed in the same manner as in Example 1,
The results are shown in Table 1.

Comparative Example 4

A recording material was prepared in the same manner as in Example 1 except that poly (diallyldimethylammonium chloride) was used in place of the N-dodecylisoquinolinium bromide used in Example 1. Inkjet recording and water resistance evaluation of the printed part were carried out in the same manner as in Example 1, and the results are shown in Table 1.

[0040]

[Table 1]

Claims (6)

[Claims] 1. A substrate of at least the surface of a substrate having the formula (I) C _m H _{2m + 1} -X (I) [wherein, m represents an integer of 10 to 14, and -X represents the formula (II).
Or (III) In which ring A may be further condensed with a benzene ring, n represents an integer of 1 to 4, R ¹ ,
R ² , R ³ , R ⁴ and R ⁵ independently of each other have 1 carbon atom
And a compound having a quaternary ammonium ion represented by the formula [3]. 2. The recording material according to claim 1, wherein -X is represented by the formula (II). 3. The recording material according to claim 2, wherein -X is a pyridinium group. 4. The recording material according to claim 2, wherein -X is a quinolinium group or an isoquinolinium group. 5. The recording material according to claim 1, wherein the base material is paper. 6. A fourth compound represented by the formula (I) per 1 m ^{2 of the} substrate.
0.01 to 10 g of a compound having a primary ammonium ion
The recording material according to any one of claims 1 to 5, further comprising: