JP2001220521A - Aqueous composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aqueous composition which contains a colorant and a surfactant which fully exhibits its results even when used in a small amount in comparison with a conventional surfactant and can improve the penetration of the composition; a recording liquid, such as an ink, a liquid toner, or a coating material, comprising the composition; and an ink jet recording method using the recording liquid. SOLUTION: This composition contains a colorant and a surfactant which contains a compound derived from procaryotes, such as microorganisms of the genus Bacillus, or a polypeptide compound or its salt. A recording liquid comprising the composition and an ink jet recording method using the liquid are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an aqueous composition containing a colorant and a surfactant suitable for inks, liquid toners, paints and the like. In addition, the present invention relates to a recording liquid such as an ink, a liquid toner, and a paint made of the aqueous composition.

[0002]

2. Description of the Related Art In an aqueous composition containing a colorant such as an aqueous ink, a liquid toner, and a paint, the function of lowering the surface tension of water and improving the permeability of each composition is sufficiently exhibited. It is significantly important to Surfactants are generally added to reduce the surface tension of these water-based compositions. Japanese Patent Application Laid-Open No. 55-65269 discloses that a surfactant is added to an ink to increase the permeability of the ink. Is well known to those skilled in the art.

[0003] JP-A-11-310661 discloses a method of adding an N, N'-dialkylalkylenediamine as a method for reducing the equilibrium surface tension and dynamic surface tension of a water-based composition. . JP-A-11-263994 discloses a method of adding an alkylated higher polyamine as a method for lowering the equilibrium surface tension and dynamic surface tension of a water-based composition. JP 11-241037
The publication discloses the addition of an alkylated polyamine as a method of reducing the equilibrium surface tension and the dynamic surface tension of a water-based composition. JP-A-10-176131
The publication discloses a surface activity selected from the group consisting of a potassium salt of a phosphorylated ester of a C8-C18 alcohol, a phosphorylated ester of isooctanol, and a phosphorylated coester of a C8-C18 alcohol and an oxygen-substituted aliphatic ethoxylate. Liquid inkjet inks comprising agents are disclosed.

However, with known surfactants, clogging or the like occurs in inks containing a pigment and reliability cannot be maintained, and when high color reproducibility such as photographic images and CG is required, Insufficient color development of cyan and magenta makes it impossible to obtain a clear image.In addition, when printing a color image on plain paper with an ink jet printer, suppression of bleeding at the color boundary and prevention of occurrence of feathering in characters and fine lines. Each of these surfactants has problems such as not being sufficient, and in order to obtain the required permeability and dispersibility, a large amount of surfactant must be added. However, the aqueous composition containing the coloring agent was not satisfactory.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a surfactant and a colorant which are effective in a smaller amount than conventional surfactants and can improve the permeability of an aqueous composition. An object of the present invention is to provide an aqueous composition suitable for use in inks, liquid toners, paints and the like, a recording liquid comprising the aqueous composition, and an ink jet recording method using the recording liquid.

[0006]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that when a compound produced by fermentation of a prokaryote such as a microorganism of the genus Bacillus is used as a surfactant, the amount of the compound used is smaller than that of a conventional surfactant. It has been found that the permeability of an aqueous composition containing a colorant in an amount can be improved, and the recording liquid comprising the aqueous composition has improved permeability, and an image of excellent quality can be obtained in an image formed by the recording liquid. The inventors have found that the present invention can be obtained, and have completed the present invention.

That is, the present invention relates to the following matters. [1] In an aqueous composition containing a colorant and a surfactant,
An aqueous composition comprising a prokaryote-derived compound as a surfactant. [2] The aqueous composition according to the above [1], wherein the prokaryote is a microorganism of the genus Bacillus. [3] In an aqueous composition containing a colorant and a surfactant,
An aqueous composition comprising a lipopeptide compound or a salt thereof as a surfactant.

[4] The lipopeptide compound has the formula (1)

[0009]

Embedded image [In the formula (1), X is leucine, isoleucine,
An amino acid selected from the group consisting of valine, glycine, serine, alanine, threonine, asparagine, glutamine, aspartic acid, glutamic acid, lysine, arginine, cysteine, methionine, phenylalanine, tyrosine, tryptophan, histidine, proline, 4-hydroxyproline and homoserine. Represents a residue, and R represents a normal alkyl group having 9 to 13 carbon atoms, an isoalkyl group or an anteisoalkyl group. 1 shown by
The aqueous composition according to the above [3], which is a kind or two or more kinds of compounds. [5] The aqueous composition according to the above [4], wherein in the formula (1), X is a leucine, isoleucine or valine residue. [6] The aqueous composition according to the above [3], wherein the lipopeptide compound is one or two or more compounds selected from the group consisting of pripastatin, arthrofactin, iturin, and selawettin.

[7] The above-mentioned [1] to [6], wherein the coloring agent contains one or more compounds selected from the group consisting of inorganic ores, inorganic compound pigments and organic compound pigments.
The aqueous composition according to any one of the above. [8] The method according to any of [1] to [6], wherein the colorant includes one or more water-soluble dyes selected from the group consisting of direct dyes, acid dyes, food dyes, and reactive dyes. An aqueous composition as described. [9] The aqueous composition according to the above [8], which contains a water-soluble dye having at least an azo group in its structure as a coloring agent. [10] The aqueous composition according to any one of the above [1] to [6], containing a coloring matter as a coloring agent.

[11] When the content of the lipopeptide compound is
The aqueous composition according to any one of the above [3] to [10], which is 0.001 to 30% by mass. [12] A recording liquid comprising the aqueous composition according to any one of [1] to [11]. [13] The recording liquid according to the above [12], which is used for any of ink, liquid toner, and paint. [14] The above-mentioned [1] which is an ink for inkjet recording
2] or the recording liquid according to [13]. [15] An inkjet recording method using the inkjet recording ink according to [14].

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Surfactin will be described first as a typical lipopeptide compound used in the aqueous composition of the present invention. Surfactin has the following formula (1)

[0013]

Embedded image [In the formula (1), X represents a leucine, isoleucine or valine residue, and R represents a normal alkyl group having 9 to 13 carbon atoms, an isoalkyl group, or an anteisoalkyl group. Which is a compound having a lipopeptide structure represented by the formula: Prokaryotes generally include Bacillus subtilis IAM1213 strain, IAM
1069, IAM 1259, IAM 1260, IFO3035, ATCC21
Bacillus microorganisms such as 332 strains are used. If this microorganism is cultured and purified, surfactin can be easily obtained. Purification is performed, for example, by acidifying the culture solution by adding hydrochloric acid or the like, filtering out precipitated surfactin, dissolving it in an organic solvent such as methanol, and then appropriately performing ultrafiltration, activated carbon treatment, crystallization, and the like. You. The precipitation by the addition of an acid may be replaced by the precipitation by the addition of a calcium salt. (Biochem. Bioph. Res. Commun., 31: 488-494)
(1968)).

This surfactin generally has the formula (1)
Or one or more compounds shown in the following. formula
In the above (1), R is a group having 9 to 13 carbon atoms as described above.
Lumalalkyl group or isoalkyl group or ante
It is a soalkyl group. Normal alkyl group is linear alkyl
And an isoalkyl group are usually (CH_Three)_TwoCH- (C
H _Two)_nAnd the anteisoalkyl group is usually
CH_Three-CH_Two-CH (CH _Three)-(CH_Two)_n-Structure
It is. If surfactin is used, the culture
It may be used as it is, or may be used after purification.

Surfactin can also be used as a metal salt or an organic ammonium salt, as can be seen from the formula (1). The metal serving as a counter ion is not particularly limited as long as it forms a salt with surfactin, including alkali metals such as sodium, potassium and lithium, alkaline earth metals such as calcium and magnesium, and the like. As organic ammonium, trimethylamine, triethylamine,
Examples include tributylamine, monoethanolamine, diethanolamine, triethanolamine, lysine, arginine, choline and the like. Of these, alkali metal salts, particularly sodium salts, are preferred.

Surfactin exhibits anionic activity due to the carboxyl group of L-Glu (L-glutamic acid) and L-Asp (L-aspartic acid). The present invention has found that a lipopeptide compound such as surfactin shows an improvement in permeability in an aqueous composition coexisting with a coloring agent, and utilizes this.

The fact that surfactin exhibits high permeability is that while surfactin is a complex cyclic compound having a bulky structure, the hydrophilic part and the hydrophobic part are structurally localized, and the orientation at the interface is good. It is thought that. In addition, the critical micelle concentration is extremely low for the same reason, and it is considered that the effect is exhibited by adding a small amount.

The above surfactin has been described in detail as a specific example which satisfies these requirements. However, the surfactin-based amino acid composition is changed, for example, in the formula (1), X represents glycine, serine, Compounds replaced with alanine, threonine, asparagine, glutamine, aspartic acid, glutamic acid, lysine, arginine, cysteine, methionine, phenylalanine, tyrosine, tryptophan, histidine, proline, 4-hydroxyproline, and homoserine can also be used.

As a compound having a lipopeptide structure other than surfactin, for example, the following formula (2)

[0020]

Embedded image [In the formula (2), Y represents an alanine or valine residue. ], Pripastatin (J. Antibiot., Vo
l. 39, No. 6, 745-761, 1986), and the following formula (3)

[0021]

Embedded image Earthlofactin represented by (J. Bacteriol., Vol.
175, No. 20, 6459-6466, 1993), the following formula (4)

[0022]

Embedded image (Biochemistry, Vol. 17, No. 1
9, 3992-3996, 1978) and the following formula (5)

[0023]

Embedded image Serawetin (J. Bacteriol., Vol. 174,
No. 6, 1769-1772, 1992) can also be preferably used.

In the present invention, as the lipopeptide compound, those derived from prokaryotes such as microorganisms of the genus Bacillus and those obtained by other production methods such as chemical synthesis can also be used.

The form of the lipopeptide compound contained in the aqueous composition is not limited, and may be any form such as a liquid, an emulsion or a gel. Further, a state in which vesicles are formed in the liquid may be used. The amount of the lipopeptide compound in the aqueous composition is generally in the range of 0.001 to 30% by mass, preferably 0.01 to 25% by mass, more preferably 0.02 to 20% by mass.
Used in the range of mass%.

Next, the coloring agent used in the present invention will be described. The colorant in the present invention typically means a compound used for coloring, such as a pigment, a dye, or a pigment, but any type can be used as long as it can be colored. Examples of the pigment used in the present invention include inorganic ores, inorganic pigments, organic pigments, and the like. Specifically, "Revised New Edition Pigment Handbook" (1989, edited by The Japan Pigment Technical Association), pages 7-5.
The pigments described in No. 0 can be used. Examples of the dye include direct dyes, acid dyes, food dyes, azo dyes, reactive dyes, and similar compounds thereof.

For example, a color index (Color Inde
x), and as a direct dye, C.I.
I. Direct Yellow 1,4,7,8,9,11,12,24,26,2
7, 28, 33, 39, 44, 50, 58, 59, 6
2, 85, 86, 87, 88, 89, 98, 100, 1,
10 mag; C.I. I. Direct Orange 1,6,8,10,26,29,3
1, 39, 41, 49, 51, 57, 102, 107
Etc .; I. Direct Red (Direct Red) 1, 2, 4, 9, 11, 13, 17, 20, 23,
24, 28, 31, 33, 37, 39, 44, 46, 6
2, 63, 75, 79, 80, 81, 83, 84, 8
9, 95, 99, 113, 197, 201, 218, 2
20, 224, 225, 226, 227, 228, 22
9, 230, 231, etc .; I. Direct Vio
let (direct violet) 1, 7, 9, 1
2, 22, 35, 47, 48, 51, 63, 90, 9
4, 98, etc .; I. Direct Blue 1,2,6,8,14,15,22,2
5, 41, 53, 71, 76, 77, 78, 80, 8
6, 90, 98, 106, 108, 120, 123, 1
58, 160, 163, 165, 168, 192, 19
3, 194, 195, 196, 199, 200, 20
1, 202, 203, 207, 225, 226, 23
6, 237, 246, 248, 249, etc .; I. Di
Rect Green (direct green) 1,
6, 8, 28, 30, 31, 33, 37, 59, 63,
64, 74, etc .; I. Direct Brown (Direct Brown) 1A, 2, 6, 25, 27, 4
4, 58, 59, 95, 100, 101, 106, 11
2, 170, 173, 194, 195, 209, 21
0, 211, etc .; I. Direct Black 17, 19, 22, 32, 38,
51, 56, 62, 71, 74, 75, 77, 94, 1
05, 106, 107, 108, 112, 113, 11
7, 118, 132, 133, 146 and the like.

Examples of the acid dye include C.I. I. Ac
id Yellow (acid yellow) 1, 3,
7, 9, 11, 17, 19, 23, 25, 29, 34,
36, 38, 40, 42, 44, 49, 54, 59, 6
1, 65, 70, 72, 73, 75, 76, 78, 7
9, 98, 99, 110, 111, 112, 114, 1
16, 118, 119, 127, 128, 131, 13
5, 141, 142, 161, 162, 163, 16
4, 165, 186, etc .; I. Acid Orange
e (acid orange) 1, 5, 6, 7, 8, 10,
12, 19, 20, 24, 28, 33, 41, 43, 4
5, 51, 52, 56, 63, 64, 65, 67, 7
4, 80, 82, 85, 86, 87, 88, 95, 12
2, 123, 124, etc .; I. Acid Red 1,2,4,6,8,9,13,1
4, 17, 18, 26, 27, 29, 32, 35, 3
7, 42, 44, 50, 51, 52, 57, 60, 6
6, 73, 75, 77, 80, 82, 83, 85, 8
7, 88, 89, 91, 92, 94, 97, 103, 1
06, 111, 112, 114, 115, 117, 11
8, 119, 129, 130, 131, 133, 13
4, 138, 143, 145, 150, 151, 15
4, 155, 158, 168, 176, 180, 18
3, 184, 186, 194, 198, 199, 20
9, 211, 215, 216, 217, 219, 24
9, 252, 254, 256, 257, 262, 26
5, 266, 274, 276, 282, 283, 28
9, 303, 317, 318, 320, 321, 322
Etc .; I. Acid Violet (acid violet) 5, 7, 9, 11, 15, 17, 19, 3
1, 34, 35, 41, 43, 47, 48, 49, 5
1, 54, 66, 68, 75, 78, 97, 106, etc .;
C. I. Acid Blue 1,
3, 7, 9, 15, 20, 22, 23, 25, 27, 2,
9, 40, 41, 43, 45, 54, 59, 60, 6
2, 72, 74, 78, 80, 82, 83, 90, 9
2, 93, 100, 102, 103, 104, 110,
112, 113, 117, 120, 126, 127, 1
29, 130, 131, 138, 140, 142, 14
3, 147, 151, 154, 158, 161, 16
6, 167, 168, 170, 171, 175, 18
2,183,184,187,192,199,20
3, 204, 205, 229, 234, 236, etc .;
I. Acid Green 1,
3, 5, 7, 9, 12, 16, 19, 20, 25, 2,
7, 28, 35, 36, 40, 41, 43, 44, 4
8, 50, 56, 57, 60, 61, 65, 73, 7
5, 76, 78, 79, etc .; I. Acid Brow
n (acid brown) 2, 4, 13, 14, 19,
20, 27, 28, 30, 31, 39, 44, 45, 4
6, 48, 53, 92, 100, 101, 103, 10
4, 106, 160, 161, 165, 188, 22
4, 225, 226, 231, 232, 236, 24
7, 256, 257, 266, 268, 276, 27
7, 282, 289, 294, 295, 296, 29
7, 299, 300, 301, 302, etc .; I. Ac
idBlack (acid black) 1, 2, 7, 2
4, 26, 29, 31, 44, 48, 50, 51, 5
2, 58, 60, 62, 63, 64, 67, 72, 7
6, 77, 94, 107, 108, 109, 110, 1
12, 115, 118, 119, 121, 122, 13
1, 132, 139, 140, 155, 156, 15
7, 158, 159, 191 and the like.

As food dyes, for example, C.I. I. F
good Yellow (food yellow) 3, 4, etc .;
C. I. Food Red (food red) 7, 9,
14, 87, 92, etc .; I. Food Violet
(Food Violet) 2 etc .; I. Food B
lue (food blue) 1, 2, etc .; I. Food
Green (food green) 2 etc .; I. Fo
od Black (food black) 2 and the like.

Examples of the azo dyes include C.I. I. Acid Black 1, 21, 24, 26, 41, 48, 5
2,60,63,84,94,123; C.I. I. Acid blue 1,7,9,15,25,27,43,45,
47, 59, 62, 69, 77, 78, 83, 90, 9
2,102,104,113,120,158,16
1,193; C.I. I. Acid Brown 6,8,1
4, 17, 20, 102, 105; I. Acid green 3,5,9,12,19,20,25,35,
95; I. Acid Orange 1,6,7,8,1
0,14,19,20,24,28,33,51,5
2,61,63,67,74,92,125,127,
156; I. Acid Red 1,2,13,1
4,18,27,32,33,35,37,42,5
2,73,85,87,88,89,97,99,10
1,106,111,114,128,134,13
8,145,151,154,161,179,18
0,183,186,214,248,249,26
6,288,296,337,351; I. Acid violet 1,7,9,17,56,58; C.I.
I. Acid Yellow 7, 9, 11, 17, 19, 2
3,25,29,36,38,40,42,44,4
9,56,59,62,65,72,76,99,11
8,121,129,135,161,162,17
1,183,199,201; C.I. I. Direct Black 4, 17, 19, 22, 32, 38, 80, 91,
122, 154; I. Direct blue 1,2,
6,10,14,15,22,25,71,76,7
8, 80, 95, 98, 159, 218; I. Direct Brown 2,27,31,52,95,10
0, 222; I. Direct Green 1,6,2
6, 28, 33, 59; I. Direct orange
6, 26, 29, 32, 39, 40, 46, 102;
C. I. Direct Red 2,4,23,24,2
6,31,37,39,54,62,75,76,7
9,80,81,83,99,111,113,22
0,234; I. Direct violet 7,
9, 35, 47, 48, 51, 66; I. Direct Yellow 4,8,11,12,22,26,27,2
9, 33, 44, 50, 106 and the like.

Examples of the reactive dye include C.I. I. React
live Yellow (reactive yellow) 1,
5,11,13,14,20,21,22,25,4
0, 47, 51, 55, 65, 67; I. Reac
five Red (reactive red) 1,14,1
7, 25, 26, 32, 37, 44, 46, 55, 6
0, 66, 74, 79, 96, 97; I. Reac
five Blue (reactive blue) 1,2,2
7, 14, 15, 23, 32, 35, 38, 41, 6
3, 80, 95; I. Reactive Blac
k (reactive black) 3, 4, 7, 11, 12,
17 and the like.

In the present invention, even if the dye is not described in the above Color Index, any dye having an anionic group and soluble in water can be used as a similar compound such as a direct dye or an acid dye. Can be used as For example, C.I. I. Azo dyes not listed in (Color Index) include CAS (Chemical Abstracts Service) numbers 103571-38-6 and 103977-11.
-3,103977-13-5,104008-60-8,106414-14-6,111953-
70-9, 111953-71-0, 111953-72-1, 111953-73-2, 11236
3-27-6, 121538-22-5, 122302-90-3, 123458-20-8, 123
458-21-9, 123458-26-4, 123458-27-5, 1244953-15-7, 1
24998-48-7, 124998-49-8, 124998-51-2, 125604-93-
5, 126488-46-8, 126488-48-0, 126514-13-4, 126560-6
9-8, 126817-18-3, 135322-33-7, 136821-11-9, 136821
-12-0, 136987-84-3, 136987-85-4, 143784-31-0, 1450
81-06-7, 145268-49-1, 149598-26-5, 149598-27-6, 14
9598-30-1, 149598-31-2, 149598-34-5, 149632-22-4,
14987-86-1, 151407-65-7, 151407-82-8, 168075-44-
3,169762-48-5,170344-61-3,173062-58-3,173062-6
1-8, 173062-64-1, 173062-65-2, 173062-66-3, 173398
-80-6, 173584-00-4, 173659-42-2, 174366-15-5, 1743
66-16-6, 174366-19-9, 183130-96-3, 186795-55-1, 19
0852-00-7, 190852-01-8, 190852-04-1, 201987-02-2,
201987-06-6, 205580-23-0, 205580-24-1, 211935-63-
6, 219806-58-3, 27601-28-1, 37790-31-1, 37790-35-
5, 37790-37-7, 37790-40-2, 37790-41-3, 37790-52-
6, 52238-67-2, 62331-58-2, 62331-60-6, 76544-02-
0,83045-89-0,83738-91-4,90375-37-4,90375-42-
1,90375-47-6,96384-79-1,96384-85-9,96841-16-
6, 105985-32-8, 105985-33-9, 105985-35-1, 105985-4
8-6,106206-11-5,106610-72-4,106643-99-6,121538
-27-0, 141028-15-1, 141028-16-2, 149598-24-3, 1495
98-25-4, 149598-28-7, 149598-29-8, 149598-35-6, 15
1407-79-3, 151407-83-9, 151408-13-8, 159637-52-2,
159637-54-4, 159637-55-5, 159637-59-9, 163966-02-
7, 173062-59-4, 173062-60-7, 173062-62-9, 173062-6
3-0, 179868-96-3, 179868-98-5, 179869-00-2, 179869
-01-3, 184889-97-2, 190852-03-0, 193486-82-7, 1953
25-89-4, 200138-09-6, 200138-10-9, 202394-62-5, 20
2394-63-6, 211935-64-7, 211935-66-9, 211935-68-1,
211935-70-5, 213399-53-2, 213399-54-3, 213399-55-
4,213399-56-5,213399-57-6,213399-58-7,213399-5
9-8, 213399-60-1, 215462-79-6, 218281-61-9, 220611
-17-6, 220611-19-8, 220611-22-3, 220622-03-7 and the like.

Further, specific examples of dyes include, for example, acridine dyes such as acridine orange; azine dyes such as Janus Green B; azoic diazo dyes such as Fast Blue BB salt; Disperse Blue 3 and alizarin blue black B; Anthraquinone dyes; indigo dyes such as indigo blue; oxazine dyes such as lumicrome; carminic acid dyes such as aluminum or calcium-aluminum lake of carminic acid; carotenoid dyes such as food orange 5; Xanthene dye; coumarin dye such as 7-hydroxy-4-methyl-coumarin (4-methylumbelliferone); cyanine dye such as indocyanine green; diazo dye such as Disperse Orange 13; Diazonium salt dyes such as de RC;
Sulfonaphthalein dyes such as cresol red; thiazine dyes such as methylene green; triarylmethyl dyes such as malachite green;
Trisazo dyes such as lucifer yellow CH; paraquinoidal dyes such as hematoxylin; phthalocyanine dyes such as Pigment Blue 15; phenylenediamine dyes such as Solvent Orange 53 or Disperse Yellow 9; 3,6-diaminoacridine hemisul Proflavin dyes such as fate; fluorescein dyes such as fluoresceinamine; benzimidazole dyes such as bisbenzoimide;
Monoazo dyes such as cyanine black, β-naphthol and Victoria Pure Blue B; indigo dyes such as indigo A;

These may be used alone or in combination of two or more. The amount of the coloring agent in the aqueous composition is generally in the range of 0.01 to 20% by mass, preferably 0.1 to 20% by mass.
It may be used in a range of 15% by mass.

The aqueous composition of the present invention contains the above colorant and surfactant. This surfactant acts as a dispersant, solubilizer, penetrant and the like in the aqueous composition. Examples of the use of the aqueous composition include recording liquids such as inks, liquid toners, and paints, and can be suitably used, for example, as inks for inkjet recording, aqueous paints, and the like.

When the aqueous composition of the present invention is used for these purposes, the following components commonly used in these recording solutions can be contained. That is, auxiliary solvents (for example, alcohols such as methanol and ethanol, ketones such as acetone and methyl ethyl ketone, ethers such as diethyl ether and 1,4-dioxane, nitrogen-containing water-soluble organic solvents such as acetonitrile, dimethyl sulfoxide and the like) Sulfur-containing water-soluble organic solvents, aromatic hydrocarbons such as benzene, toluene and xylene, n-
Aliphatic hydrocarbons such as pentane, n-hexane and cyclohexane, polyols such as ethylene glycol, propylene glycol and 1,3-propanediol), viscosity modifiers (eg, water-soluble resins such as polyvinyl alcohol), wetting agents ( For example, gluconolactone, sorbitol, urea, thiourea and derivatives thereof), defoamers, preservatives
Fungicides (eg, sodium dehydroacetate), metal sealants (eg, sodium ethylenediaminetetraacetate), rust preventives (eg, ammonium thioglycolate), oxygen absorbers (eg, sodium sulfite), pH adjusters, antioxidants, UV absorbers, other surfactants (cationic surfactants, anionic surfactants, nonionic surfactants,
Other components such as an amphoteric surfactant) can be appropriately added.

Further, the aqueous composition of the present invention can be suitably used as a recording ink for inkjet in a general inkjet printer.

[0038]

Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples. Hereinafter, unless otherwise specified,% indicates mass%.

(Production Example) Bacillus subtilis ATCC213
32 strains were cultured in a medium (1% polypeptone, 0.1% KH _TwoPO_Four,
0.05% MgSO_Four・ 7H_TwoAdjust pH to 7 with O, NaOH
And the remaining water is inoculated at 35 ° C and 160 rpm at 12:00.
Culture was performed between the two. 100 ml of culture solution with soy flour and maltose
Potassium hydrogen phosphate, magnesium sulfate
Medium containing nesium, calcium salts, iron salts, manganese salts
To 2 liters of fermenter containing
Cultivation was carried out for 48 hours while stirring and vigorous aeration. Ma
During the culture, sodium hydroxide was added to adjust the pH to 7.0 to 7.0.
Maintained at 5. After the culture is completed, the bacteria are removed by centrifugation and cultured.
The supernatant was collected. Freeze-dry part of the culture supernatant and culture it
A liquid dried product was obtained. Adjust remaining culture supernatant to pH 2 with hydrochloric acid
Then, the surfactin fraction was precipitated. By centrifugation
Remove the supernatant and transfer the surfactin fraction to acetone organic solvent.
Was dissolved. This is treated with an organic solvent resistant ultrafiltration membrane (Nihon Gas).
Ishi ceramic membrane filter UF10,0
00) to collect the filtrate fraction.
Pure material was removed. Next, activated carbon (φ20μ) was added to the filtrate fraction.
m), deodorize and decolorize, then remove activated carbon by filtration.
The liquid was concentrated by an evaporator and dried. Then caustic saw
While maintaining the pH at around 7 and adding the dried product to water.
Was dissolved. This is freeze-dried and surfactin nato
Lithium powder was obtained. These culture dried products and surf
Actin sodium was used in each of the following tests.

(Surface tension test) The culture-dried product obtained above and surfactin sodium were each added to 0.001% by mass of water.
After dissolution, the ability of water to lower the surface tension was examined. The surface tension was measured by a plate method (25 ° C.) using an automatic surface tensiometer CBVP-Z manufactured by Kyowa Interface Science Co., Ltd. For comparison, sodium dodecyl sulfate (manufactured by Kanto Chemical Co., Ltd.) was dissolved in 0.001% by mass and 0.36% by mass of water, and the ability to lower the surface tension of water was similarly examined. Table 1 shows the results.

[0041]

[Table 1]

It can be seen that the culture-dried product and surfactin sodium show an ability to lower the surface tension of water at an extremely low concentration.

(Penetration test) One set (16 pieces) of Kim towels (manufactured by Crecia Co., Ltd.) was cut into 2 cm × 2 cm, and the center was stapled to prepare a test piece. 0.1% by mass, 0.01% by mass, 0.0% by mass of the culture dried product obtained above and surfactin sodium.
100 ml of an aqueous solution of 01% by mass and 100% by mass of a 0.0001% by mass were prepared, placed in a 100 ml glass beaker, and the test piece was gently placed on the water surface, and the time from placing the test piece to sinking was measured. For comparison, 0.1% by mass, 0.01% by mass, 0.001% by mass, and 0.0001% by mass of an aqueous solution of sodium dodecyl sulfate (manufactured by Kanto Chemical Co., Ltd.) 10
0 ml of each was prepared, and the time was measured in the same manner. Table 2 shows the results.

[0044]

[Table 2]

Examples 1 to 7 and Comparative Examples 1 to 7 Aqueous compositions were prepared with the following compositions. (Example 1) Surfactin sodium 0.02% C.I. I. Acid Blue 9 3% Glycerin 10% Thiodiglycol 5% Purified water Balance This was designated as Example 1.

Example 2 C.I. used in the preparation of Example 1 I. Acid Blue 9 as C.I. I. An aqueous composition was prepared in the same manner as in Example 1 except that Direct Blue 199 was used. This was designated as Example 2. Example 3 C.I used in the preparation of Example 1 I.
Acid Blue 9 as C.I. I. Acid Yellow 23
An aqueous composition was prepared in the same manner as in Example 1 except that This was designated as Example 3. Example 4 C.I used in the preparation of Example 1 I.
Acid Blue 9 as C.I. I. Direct Yellow 8
Except having changed to 6, it carried out similarly to Example 1, and prepared the aqueous composition. This was designated as Example 4.

Example 5 C.I used in the preparation of Example 1 I. Acid Blue 9 as C.I. I. Acid
An aqueous composition was prepared in the same manner as in Example 1, except that Red 52 was used. This was designated as Example 5. Example 6 C.I. used in the preparation of Example 1 I.
Acid Blue 9 as C.I. I. Acid Red 289
An aqueous composition was prepared in the same manner as in Example 1 except that This was designated as Example 6. Example 7 C.I. used in the preparation of Example 1 I.
Acid Blue 9 as C.I. I. Direct Red 22
Except having replaced with 7, the aqueous composition was prepared like Example 1. This was designated as Example 7.

(Comparative Example 1) An aqueous composition was prepared in the same manner as in Example 1 except that 0.02% of sodium surfactin used in the preparation of Example 1 was changed to 2% of sodium dodecyl sulfate. This was designated as Comparative Example 1. Comparative Example 2 C.I. used in the preparation of Comparative Example 1 I.
Acid Blue 9 as C.I. I. Direct Blue 19
Except having replaced with 9, the aqueous composition was prepared like Comparative Example 1. This was designated as Comparative Example 2. Comparative Example 3 C.I. used in the preparation of Comparative Example 1 I.
Acid Blue 9 as C.I. I. Acid Yellow 23
A water-based composition was prepared in the same manner as in Comparative Example 1 except that This was designated as Comparative Example 3.

Comparative Example 4 C.I. used in the preparation of Comparative Example 1 I. Acid Blue 9 as C.I. I. An aqueous composition was prepared in the same manner as in Comparative Example 1 except that Direct Yellow 86 was used. This was designated as Comparative Example 4. (Comparative Example 5) C.I. I.
Acid Blue 9 as C.I. I. An aqueous composition was prepared in the same manner as in Comparative Example 1, except that Acid Red 52 was used. This was designated as Comparative Example 5. Comparative Example 6 C.I. I.
Acid Blue 9 as C.I. I. Acid Red 289
A water-based composition was prepared in the same manner as in Comparative Example 1 except that This was designated as Comparative Example 6.

Comparative Example 7 C.I. used in the preparation of Comparative Example 1 I. Acid Blue 9 as C.I. I. An aqueous composition was prepared in the same manner as in Comparative Example 1, except that Direct Red 227 was used. This was designated as Comparative Example 7. The permeability test of the prepared Examples 1 to 7 and Comparative Examples 1 to 7 was performed by the above-described method. Table 3 shows the results.

[0051]

[Table 3]

In Examples 1 to 7, it was found that the test piece sedimented in a short time even though the concentration of the surfactant was 1/100 lower than that of Comparative Examples 1 to 7, and the lipopeptide compound was extremely low. It has been clarified that the permeability of the aqueous composition can be improved at a low concentration.

(Example 8 and Comparative Example 8) (Preparation of recording liquid) Colorant (described below) 3 was placed in a flask equipped with a thermometer, a stirrer, a nitrogen inlet tube and a reflux condenser tube.
g, 10 g of glycerin and 5 g of thiodiglycol,
Water was added so that the total was 70 g, the temperature was increased while stirring under a nitrogen atmosphere, stirring was continued at 60 ° C. until the solution became uniform, and after cooling to room temperature, a membrane filter having a pore size of 0.8 μm was used. The solution was filtered to prepare a solution.

As the coloring agent, C.I. I. The solution using Acid Blue 9 was designated as CI1, and C.I. I. The solution using Direct Blue 199 was used for CI2, C.I.
I. A solution using Acid Yellow 23 was prepared as YI1,
C. I. The solution using Direct Yellow 86 was applied to YI
2, C.I. I. The solution using Acid Red 52 was added to MI
1, C.I. I. The solution using Acid Red 289 was added to M
I2, C.I. I. The solution using Direct Red 227 was named MI3.

Recording liquid 1: Water 19.98 was placed in a flask equipped with a thermometer, a stirrer, a nitrogen inlet tube and a reflux condenser tube.
g, surfactin sodium 0.02 g, sodium dihydrogen phosphate 3 g, dimethylethanolamine 2 g, and urea 5 g, and 70 g of the solution CI1 was added thereto. The mixture was heated at 60 ° C. while stirring under a nitrogen atmosphere. Continue stirring until uniform and cool to room temperature, then pore size 0.8 μm
The resultant was filtered using a membrane filter of No. 1 to prepare a cyan recording solution. Similarly, instead of solution CI1, CI
2, a total of seven types of recording liquids of cyan (two types), yellow (two types) and magenta (three types) are prepared using YI1, YI2, MI1, MI2 or MI3, and these are prepared as recording solutions 1-1 to 1-1. 1-7.

Comparative liquid 2: 19.98 g of water and 0.02 surfactin sodium used in the preparation of recording liquid 1
A recording solution was prepared in the same manner as the recording solution 1 except that g was replaced with 18 g of water and 2 g of sodium dodecyl sulfate. These were used as Comparative Solutions 2-1 to 2-7. Prepared recording liquid 1-1-1
-7 and Comparative Solutions 2-1 to 2-7 were tested for permeability by the above-described method. Table 4 shows the results.

[0057]

[Table 4]

The recording liquids 1-1 to 1-7 correspond to the comparative liquids 2-1 to 2-1.
Despite the fact that the concentration of the surfactant was 1/100 lower than that of 2-7, the test piece was found to settle in a short time,
It has been clarified that the lipopeptide compound can improve the permeability of the recording solution at an extremely low concentration.

(Example 9 and Comparative Example 9) (Printing Evaluation) As Example 9, each color (two types of cyan, two types of yellow, and three types of magenta) of the recording liquid 1 was used for each of HP51625A cartridges (manufactured by Hewlett-Packard Co., Ltd.) The image was printed on plain paper (recycled paper / neutral paper, NBS Ricoh Co., Ltd. NBS PAPER) using an inkjet printer (Desk Writer 550C, manufactured by Hewlett-Packard Co., Ltd.). No feathering or color bleed was seen in the image.

As Comparative Example 9, each color (Cyan 2
, Two types of yellow, and three types of magenta). The images showed signs of feathering and color bleed.

[0061]

The aqueous composition of the present invention exhibits excellent permeability even when the amount of surfactant used is small, and can be suitably used for inks, liquid toners, paints and the like. Further, the recording liquid comprising the aqueous composition of the present invention exhibits excellent permeability and can provide high quality images. In particular, according to the ink jet recording method using the recording liquid of the present invention, an image formed by ink jet printing can be provided with excellent quality, which is useful in the field of image printing.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09D 17/00 C09D 189/00 189/00 B41J 3/04 101Y (72) Inventor Shinobu Ito Minato-ku, Tokyo 1-13-9 Shiba-Daimon Showa Denko KK (72) Inventor Makoto Yamazaki 1-13-9 Shiba-Daimon Minato-ku, Tokyo F-term in Showa Denko KK 2C056 EA04 FC02 2H086 BA53 BA55 BA56 BA59 BA62 4J037 AA08 CB28 CC01 DD24 EE08 EE28 EE43 FF15 4J038 BA182 HA006 KA06 KA08 KA09 4J039 AB07 BA00 BE01 BE02 BE22 EA41 EA42 EA46 GA24

Claims (15)

[Claims] 1. An aqueous composition comprising a colorant and a surfactant, wherein the aqueous composition comprises a prokaryote-derived compound as the surfactant. 2. The aqueous composition according to claim 1, wherein the prokaryote is a microorganism of the genus Bacillus. 3. An aqueous composition comprising a coloring agent and a surfactant, wherein the aqueous composition comprises a lipopeptide compound or a salt thereof as the surfactant. (4) a lipopeptide compound represented by the formula (1): [In the formula (1), X is leucine, isoleucine,
An amino acid selected from the group consisting of valine, glycine, serine, alanine, threonine, asparagine, glutamine, aspartic acid, glutamic acid, lysine, arginine, cysteine, methionine, phenylalanine, tyrosine, tryptophan, histidine, proline, 4-hydroxyproline and homoserine. Represents a residue, and R represents a normal alkyl group having 9 to 13 carbon atoms, an isoalkyl group or an anteisoalkyl group. 1 shown by
4. The aqueous composition of claim 3, which is one or more compounds. 5. The aqueous composition according to claim 4, wherein in the formula (1), X is a leucine, isoleucine or valine residue. 6. The aqueous composition according to claim 3, wherein the lipopeptide compound is one or more compounds selected from the group consisting of pripastatin, arthrofactin, iturin, and selawettin. 7. The aqueous composition according to claim 1, wherein the colorant comprises one or more compounds selected from the group consisting of inorganic ores, inorganic compound pigments and organic compound pigments. 8. The method according to claim 1, wherein the colorant comprises one or more water-soluble dyes selected from the group consisting of direct dyes, acid dyes, food dyes and reactive dyes. Aqueous composition. 9. The aqueous composition according to claim 8, comprising a water-soluble dye having at least an azo group in the structure as a coloring agent. 10. The aqueous composition according to claim 1, further comprising a coloring agent as a coloring agent. 11. The lipopeptide compound content of 0.0
The aqueous composition according to any one of claims 3 to 10, wherein the amount is from 01 to 30% by mass. 12. A recording liquid comprising the aqueous composition according to claim 1. 13. The recording liquid according to claim 12, wherein the recording liquid is used for any of ink, liquid toner, and paint. 14. The recording liquid according to claim 12, which is an ink for inkjet recording. 15. An ink jet recording method using the ink for ink jet recording according to claim 14.