Claims
- 1. A water-resistant ink composition comprising:
- (A) water,
- (B) an anionic dye selected from the group consisting of C.I. Acid Yellow 40, C.I. Acid Orange 51, C.I. Acid Red 114 and 249, C.I. Acid Blue 83, 90, 103, and 127, C.I. Acid Green 25 and 27, C.I. Direct Black 154, and epoxydized C.I. Direct Black 154, and
- (C) a water-resistance modifier which contains as an effective component at least one sparingly water-soluble compound containing at least one oleophilic group selected from an aromatic ring or an aliphatic hydrocarbon having 6-12 carbon atoms, and at least one hydrophilic group having at least one of O, N and S atoms;
- wherein said sparingly water-soluble compound is a compound which is one or two of the compounds selected from the group consisting of
- (a) a compound having a dicarboxylate structure selected from bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate or bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate;
- (b) a compound having a benzophenone structure selected from benzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, or 2,4-dihydroxy-benzophenone;
- (c) a compound having a phenol structure selected from ethyl 2,2-bis(4'-hydroxyphenyl)propane gallate, n-propyl gallate, isoamyl gallate salicylic aidoxime, diethyl 4-hydroxy1,2-phthalate, or para-tert-butylphenol;
- (d) benzimidazole;
- (e) a compound having a benzothiazole structure selected from 2-chloro-benzothiazole, 2-methyl-5-chlorobenzothiazole, or 2-mercaptobenzothiazole;
- (f) benzoin methyl ether; and
- (g) a compound having a benzoate structure selected from propyl p-hydroxybenzoate or phenyl benzoate.
- 2. A water-resistant ink composition according to claim 1 wherein said water-resistance modifier comprises an amount of a sparingly water-soluble compound, effective to improve the water-resistance of said dye on paper, which contains at least one oleophilic group selected from an aromatic ring or an aliphatic hydrocarbon having 6-12 carbon atoms and at least one hydrophilic group having at least one of O, N and S atoms and which has a solubility of 5% by weight or more in ethanol at 20.degree. C.
- 3. A water-resistant ink composition according to claim 1, further comprising one or more dry-up resistance imparting agents selected from the group consisting of an alcohol, an amine, a urea compound, 2-pyrrolidone, polyvinyl pyrrolidone, sorbitol and diemthylsulfone.
- 4. A water-resistant ink composition according to claim 3, wherein said urea compound is a member selected from the group consisting of urea, thiourea, ethylene urea, hydroxyethylurea, ethylene thiourea, diethylthiourea and mixtures thereof.
- 5. The water resistant ink composition according to claim 1, wherein said sparingly water-soluble compound is a compound having a dicarboxylate structure selected from bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate or bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate.
- 6. The water resistant ink composition according to claim 1, wherein said sparingly water-soluble compound is a compound having a benzophenone structure selected from benzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, or 2,4-dihydroxy-benzophenone.
- 7. The water resistant ink composition according to claim 1, wherein said sparingly water-soluble compound is a compound having a phenol structure selected from ethyl 2,2-bis(4'-hydroxyphenyl) propane gallate, n-propyl gallate, isoamyl gallate salicylic aidoxime, diethyl 4-hydroxy-1,2-phthalate, or para-tert-butylphenol.
- 8. The water resistant ink composition according to claim 1, wherein said sparingly water-soluble compound is benzimidazole.
- 9. The water resistant ink composition according to claim 1, wherein said sparingly water-soluble compound is a compound having a benzothiazole structure selected from 2-chloro-benzothiazole, 2-methyl-5-chlorobenzothiazole, or 2-mercaptobenzothiazole.
- 10. The water resistant ink composition according to claim 1, wherein said sparingly water-soluble compound is benzoin methyl ether.
- 11. The water resistant ink composition according to claim 1, wherein said sparingly water-soluble compound is a compound having a benzoate structure selected from propyl p-hydroxybenzoate or phenyl benzoate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1-277313 |
Oct 1989 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/599,902, filed Oct. 19, 1990, now abandoned.
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4325735 |
Ohta et al. |
Apr 1982 |
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4343620 |
Abel et al. |
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4559162 |
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Dec 1985 |
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4702743 |
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Oct 1987 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
599902 |
Oct 1990 |
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