Water resistant ink compositions
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsKazuyuki Matsumura, Masanao Kamei, Masaaki Yamaya, Akira Yamamoto
Life of this patent
Estimating the term…
Abstract
Water resistant ink compositions comprising (I) a water-soluble dye compound and/or an organic pigment compound; (II) an organosilicon compound obtained by hydrolyzing a mixture of (A) a hydrolyzable silane obtained by reacting a specific aminated organic group-bearing hydrolyzable silane with an organic monoepoxy compound, or a partial hydrolyzate thereof, and (B) a specific hydrolyzable silane or a partial hydrolyzate thereof; and (III) water have excellent water resistance, good storage and shelf stability, good ink discharge stability, and outstanding color stability. These ink compositions are particularly suitable for use as ink-jet printer inks.
Claims32
A water resistant ink composition comprising:
- (I) 10 parts by weight of a water-soluble dye compound or an organic pigment compound or both;
- (II) 2 to 60 parts by weight of an organosilicon compound (C) obtained by hydrolyzing a mixture comprising
- (A) 100 parts by weight of a hydrolyzable silane obtained by reacting (i) an aminated organic group-bearing hydrolyzable silane of the general formula:
- YR1mSiR23−m (1)
- wherein R1 is an unsubstituted or substituted monovalent hydrocarbon group having 1 to 8 carbons, R2 is an alkoxy or acyloxy group having 1 to 4 carbons, Y is an aminated organic group, and m is 0 or 1, with (ii) an organic monoepoxy alcohol in an amount corresponding to from 0.01 to 20 moles of epoxy groups per mole of amino groups in the hydrolyzable silane, or a partial hydrolyzate thereof, and
- (B) 5 to 200 parts by weight of a hydrolyzable silane of the general formula:
- R3nSiR44−n (2)
- wherein R3 is an unsubstituted or a non-nitrogenous substituted monovalent hydrocarbon group having 1 to 8 carbons, R4 is an alkoxy or acyloxy group having 1 to 4 carbons, and n is 0, 1 or 2, or a partial hydrolyzate thereof;
- and
- (III) 30 to 10,000 parts by weight of water.
A water resistant ink composition comprising:
- (I) 10 parts by weight of a water-soluble dye compound or an organic pigment compound or both;
- (II) 2 to 60 parts by weight of an organosilicon compound (D) obtained by reacting a hydrolyzate afforded by the hydrolysis of a mixture comprising
- (i) 100 parts by weight of an aminated organic group-bearing hydrolyzable silane of the general formula:
- YR1mSiR23−m (1)
- wherein R1 is an unsubstituted or substituted monovalent hydrocarbon group having 1 to 8 carbons, R2 is an alkoxy or acyloxy group having 1 to 4 carbons, Y is an aminated 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 of the general formula:
- R3nSiR44−n (2)
- wherein R3 is an unsubstituted or a non-nitrogenous substituted monovalent hydrocarbon group having 1 to 8 carbons, R4 is an alkoxy or acyloxy group having 1 to 4 carbons, and n is 0, 1 or 2, or a partial hydrolyzate thereof,
- with (ii) an organic monoepoxy alcohol in an amount corresponding to from 0.01 to 20 moles of epoxy groups per mole of amino groups in said hydrolyzate obtained from silanes (i) and (B), and
- (III) 30 to 10,000 parts by weight of water.
Dependencies are inferred from the claim text.