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Inventor: Laver; Hugh S.
Address: Fribourg, CH
No. of patents: 8
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5318939 |
Pressure-sensitive or heat-sensitive recording material |
June 7, 1994 |
| Compounds of formula ##STR1## wherein R, L, X and Y are as defined in claim 1, are very suitable for use as UV absorbers in pressure-sensitive or heat-sensitive recording materials. |
| 5261953 |
Inks |
November 16, 1993 |
| Inks, in particular for ink-jet printing, containing, as stabilizer, a water-soluble compound of the formula ##STR1## in which R.sub.1 to R.sub.7 are as defined in claim 1, and recording materials containing these compounds. |
| 5124723 |
Light-stabilized ink composition |
June 23, 1992 |
| 2-(2'-Hydroxyphenyl)benzotriazoles of formula I ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined in claim 1, and which contain at least one --SO.sub.3 X group in the molecule, are suitable light stabilizing additives for aqueous ink compositions, especially for ink je |
| 5098477 |
Inks, particularly for ink printing |
March 24, 1992 |
| 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 li |
| 5096781 |
Water-soluble compounds as light stabilizers |
March 17, 1992 |
| Compounds of the formula Iin which n' is a number from 1 to 4, U is a radical of a UV absorber of the hydroxyphenylbenzotriazole, hydroxybenzophenone, cinnamic acid or triazine type and SOL is a group of the formula Ia ##STR1## The symbols in the formula Ia are as defined in claim 1. |
| 5096489 |
Light-stabilized ink compositions |
March 17, 1992 |
| 2-Hydroxyphenyl-s-triazines of formula I ##STR1## wherein X, Y, R.sub.1, R.sub.2 and R.sub.3 are as defined in claim 1 and at least one of the substituents R.sub.1 and R.sub.2 is a water-solubilizing group, are suitable light stabilizing additives for aqueous ink compositions, pr |
| 5089050 |
Inks containing a water soluble compound as a stabilizer particularly for ink jet printing |
February 18, 1992 |
| Inks, in particular for ink-jet printing, containing, as stabilizer, a water-soluble compound of the formula ##STR1## in which R.sub.1 to R.sub.7 are as defined in claim 1, and recording materials containing these compounds. |
| 5073448 |
Recording materials for ink-jet printing |
December 17, 1991 |
| Recording materials for ink jet printing containing, as a stabilizer, at least one compound of the formula I ##STR1## The symbols R.sub.1, R.sub.2, R.sub.3, R.sub.3 'R.sub.4 and R.sub.4 ' are as defined in claim 1. |
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