| 摘要 |
A water-resistant ink composition comprising: (I) 10 parts by weight of a water-soluble dye compound and/or organic pigment compound; (II) 2 to 60 parts by weight of an organosilicon compound which is obtained from a mixture of components (A) and (B) shown below by hydrolysis in water or in an organic solvent containing more water than necessary for hydrolysis, (A) 100 parts by weight of a hydrolyzable silane having a nitrogen-containing organic group represented by the following formula (1):YR1mSiR23-m(1) wherein R1 is a C1-8 unsubstituted or substituted monovalent hydrocarbon group containing no nitrogen atom, R2 is a C1-4 alkoxyl group or acyloxy group, Y is a nitrogen-containing organic group, and m is 0 or 1, or a partial hydrolyzate thereof and (B) 5 to 200 parts by weight of a hydrolyzable silane represented by the following formula (2):R3nSiR44-n(2) wherein R3 is a C1-8 unsubstituted or substituted monovalent hydrocarbon group containing no nitrogen atom, R4 is a C1-4 alkoxyl group or acyloxy group, and n is 0, 1, or 2, or a partial hydrolyzate thereof, and (III) 30 to 10,000 parts by weight of water.
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