Claims
- 1. An ink which contains at least one water-soluble compound of the formula ##STR8## in which R.sub.1 is hydrogen, alkyl having 1 to 4 carbon atoms, allyl or --CO--CH.sub.3, R.sub.3 and R.sub.4, independently of one another, are hydrogen or --CO.sub.2.sup..crclbar. M.sup..sym., and R.sub.5, R.sub.6 and R.sub.7, independently of one another, are hydrogen, alkyl in each case having 1 to 8 carbon atoms which is unsubstituted or substituted by --CO.sub.2 R.sub.8, --CO.sub.2.sup..crclbar. M.sup..sym. or phenyl, or are --CO.sub.2 R.sub.8 where R.sub.8 is a group of the formula --CH.sub.2 CH.sub.2 O).sub.1-20 R.sub.11 in which R.sub.11 is hydrogen, alkyl having 1 to 4 carbon atoms or a group of the formula ##STR9## in which R.sub.1 is as defined above, Y is a direct bond or alkylene having 1 to 8 carbon atoms, and R.sub.60 and R.sub.70, independently of one another, are hydrogen or alkyl in each case having 1 to 8 carbon atoms,
- M.sup..sym. is a monovalent, divalent or trivalent metal cation, H.sup..sym. or a group of the formula .sup..sym. N(R.sub.17)(R.sub.12)(R.sub.13)(R.sub.14) in which R.sub.17, R.sub.12, R.sub.13 and R.sub.14, independently of one another, are hydrogen, alkyl in each case having 1 to 8 carbon atoms, alkyl having 2 to 8 carbon atoms which is substituted by 1 to 3 hydroxyl groups or is interrupted by oxygen, alkenyl in each case having 3 to 5 carbon atoms or benzyl, at least one of the substituents R.sub.3 to R.sub.7 being --CO.sub.2.sup..crclbar. M.sup..sym. or --CO.sub.2 R.sub.8.
- 2. A recording material which contains at least one compound of the formula (1) ##STR10## in which R.sub.1 is hydrogen, alkyl having 1 to 4 carbon atoms, allyl or --CO--CH.sub.3, R.sub.3 and R.sub.4, independently of one another, are hydrogen or --CO.sub.2.sup..crclbar. M.sup..sym., and R.sub.5, R.sub.6 and R.sub.7, independently of one another, are hydrogen, alkyl in each case having 1 to 8 carbon atoms which is unsubstituted or substituted by --CO.sub.2 R.sub.8, --CO.sub.2.sup..crclbar. M.sup..sym. or phenyl, or are --CO.sub.2 R.sub.8 where R.sub.8 is a group of the formula --(CH.sub.2 CH.sub.2 O).sub.1-20 --R.sub.11 in which R.sub.11 is hydrogen, alkyl having 1 to 4 carbon atoms or a group of the formula ##STR11## in which R.sub.1 is as defined above, Y is a direct bond or alkylene having 1 to 8 carbon atoms, and R.sub.60 and R.sub.70, independently of one another, are hydrogen or alkyl in each case having 1 to 8 carbon atoms,
- M.sup..sym. is a monovalent, divalent or trivalent metal cation, H.sup..sym. or a group of the formula .sup..sym. N(R.sub.17)(R.sub.12)(R.sub.13)(R.sub.14) in which R.sub.17, R.sub.12, R.sub.13 and R.sub.14, independently of one another, are hydrogen, alkyl in each case having 1 to 8 carbon atoms, alkyl having 2 to 8 carbon atoms which is substituted by 1 to 3 hydroxyl groups or is interrupted by oxygen, alkenyl in each case having 3 to 5 carbon atoms or benzyl, at least one of the substituents R.sub.3 to R.sub.7 being --CO.sub.2.sup..crclbar. M.sup..sym. or --CO.sub.2 R.sub.8.
- 3. A recording material according to claim 2, which is an ink-jet printing material.
- 4. A process for stabilising ink-jet prints, which comprises
- (a) applying, as ink, an aqueous solution containing a water-soluble dye to a recording material for ink-jet printing which contains at least one compound of the formula (1) ##STR12## in which R.sub.1 is hydrogen, alkyl having 1 to 4 carbon atoms, allyl or --CO--CH.sub.3, R.sub.3 and R.sub.4, independently of one another, are hydrogen or --CO.sub.2.sup..crclbar. M.sup..sym., and R.sub.5, R.sub.6 and R.sub.7, independently of one another, are hydrogen, alkyl in each case having 1 to 8 carbon atoms which is unsubstituted or substituted by --CO.sub.2 R.sub.8, --CO.sub.2.sup..crclbar. M.sup..sym. or phenyl, or are --CO.sub.2 R.sub.8 where R.sub.8 is a group of the formula --(CH.sub.2 CH.sub.2 O).sub.1-20 --R.sub.11 in which R.sub.11 is hydrogen, alkyl having 1 to 4 carbon atoms or a group of the formula ##STR13## in which R.sub.1 is as defined above, Y is a direct bond or alkylene having 1 to 8 carbon atoms, and R.sub.60 and R.sub.70, independently of one another, are hydrogen or alkyl in each case having 1 to 8 carbon atoms,
- M.sup..sym. is a monovalent, divalent or trivalent metal cation, H.sup..sym. or a group of the formula .sup..sym. N(R.sub.17)(R.sub.12)(R.sub.13)(R.sub.14) in which R.sub.17, R.sub.12, R.sub.13 and R.sub.14, independently of one another, are hydrogen, alkyl in each case having 1 to 8 carbon atoms, alkyl having 2 to 8 carbon atoms which is substituted by 1 to 3 hydroxyl groups or is interrupted by oxygen, alkenyl in each case having 3 to 5 carbon atoms or benzyl, at least one of the substituents R.sub.3 to R.sub.7 being --CO.sub.2.sup..crclbar. M.sup..sym. or --CO.sub.2 R.sub.8, and
- (b) drying the ink.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1587/90 |
May 1990 |
CHX |
|
Parent Case Info
This is a divisional of Ser. No. 695,857 filed May 6, 1991 now U.S. Pat. No. 5,089,050.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2088777 |
Jun 1982 |
GBX |
Non-Patent Literature Citations (3)
Entry |
Derwent Abst. 11220/K/05, Dec. 1982. |
Derwent Abst. 87-174795/25, May 1987. |
Derwent Abst. 83-835451/49, Oct. 1983. |
Divisions (1)
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Number |
Date |
Country |
Parent |
695857 |
May 1991 |
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