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Inks, particularly for ink printing
| Details |
Inventors: Vieira, Eric; Laver, Hugh S.;
Assignee: Ciba-Geigy Corporation (Ardsley, NY)
Primary Examiner: Dixon, Jr.; William R.
Assistant Examiner: Saunders; Timothy D.
Attorney, Agent or Firm: Hall; Luther A. R.
Inks, particularly inks for ink jet printing, contain at least one compound of the formula I ##STR1## as a stabilizer. The symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.3 ' and R.sub.4 ' are as defined in claim 1. The compounds are in part novel and are suitable for use as light stabilizers for organic materials. |
|
DETAILED DESCRIPTION What is claimed is: 1.
An ink containing as stabilizer at least one compound of formula I ##STR28## in which R.
sub.
1 and R.
sub.
2 independently of one another are C.
sub.
1 -C.
sub.
4 alkyl which is unsubstituted or substituted by one or two --OH or --COO.
sup.
- M.
sup.
+ groups; C.
sub.
3 -C.
sub.
5 alkenyl or C.
sub.
3 -C.
sub.
5 alkynyl; M.
sup.
+ is H.
sup.
+ or a monovalent, divalent of trivalent metal cation, R'.
sub.
3 and R'.
sub.
4 independently of one another are H, C.
sub.
1 -C.
sub.
4 -alkyl, OH or C.
sub.
1 -C.
sub.
4 alkoxy, R.
sub.
3 and R.
sub.
4 independently of one another are H, --OR.
sub.
7, --COO.
sup.
- M.
sup.
+, C.
sub.
1 -C.
sub.
8 alkyl which is unsubstituted or substituted by 1 or 2 --OR.
sub.
5 or --COO.
sup.
- M.
sup.
+ groups; or allyl; R.
sub.
5 is hydrogen or C.
sub.
1 -C.
sub.
4 alkyl which is unsubstituted or substituted by an OH or --COO.
sup.
- M.
sup.
+ group, and R.
sub.
7 is C.
sub.
1 -C.
sub.
4 alkyl or allyl.
2.
An ink according to claim 1, containing, as the stabilizer, at least one compound of the formula I' ##STR29## in which R.
sub.
1 and R.
sub.
2 independently of one another are C.
sub.
1 -C.
sub.
4 alkyl which is unsubstituted or substituted by one or 2 --OH or --COO.
sup.
.
crclbar.
M.
sup.
.
sym.
groups, M.
sup.
.
sym.
being H.
sup.
.
sym.
, a monovalent, divalent or trivalent metal cation, R.
sub.
5 is H or C.
sub.
1 -C.
sub.
4 alkyl which is unsubstituted or substituted by one OH group, R.
sub.
3 and R.
sub.
4 independently of one another are H, --OR.
sub.
7, --COO.
sup.
.
crclbar.
M.
sup.
.
sym.
, --(O)P--OR.
sup.
o).
sub.
2, C.
sub.
1 -C.
sub.
8 alkyl which is unsubstituted or substituted by 1 or 2 OR.
sub.
5, by 1 or 2 --COO.
sup.
.
crclbar.
M.
sup.
.
sym.
groups, and R.
sub.
7 being C.
sub.
1 -C.
sub.
4 alkyl which is unsubstituted or substituted by 1 or 2 --OH groups.
3.
An ink according to claim 1, wherein R.
sub.
1 and R.
sub.
2 independently of one another are C.
sub.
1 -C.
sub.
4 alkyl, allyl, C.
sub.
2 -C.
sub.
4 hydroxyalkyl or --C.
sub.
1 -C.
sub.
4 -alkyl-COO.
sup.
.
crclbar.
M.
sup.
.
sym.
.
4.
An ink according to claim 3, wherein R.
sub.
1 and R.
sub.
2 independently of one another are methyl, ethyl, allyl, --CH
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