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US 5,350,449 AGranted
Coating materials stabilized against light-induced degradation
AssigneeCiba-Geigy Corporation
InventorsAndreas Valet, Jean-Luc Birbaum, Mario Slongo
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Abstract
2-(2-Hydroxyphenyl)-4,6-diphenyl- and -4,6-di-p-tolyl-1,3,5-triazines are particularly suitable stabilisers, especially against light-induced degradation, for coating materials. They are superior in this respect to the corresponding 4,6-bis(2,4-dimethylphenyl) derivatives.
Claims13
A coating material stabilised against degradation induced by light, oxygen and heat, which comprises
- a) a film-forming binder,
- b) as stabiliser, at least one hydroxyphenyltriazine of formula I ##STR5## wherein R.sub.l is hydrogen or methyl,
- m is 1, and
- R.sub.2 is C.sub.1 -C.sub.12 alkyl which is substituted by hydroxyl, by C.sub.1 -C.sub.12 alkoxy or by both hydroxyl and by C.sub.1 -C.sub.12 alkoxy.
1 more element
A method of stabilising a coating material against the deleterious effects of light, oxygen and heat, which method comprises
- adding to said coating material at least one hydroxyphenyltriazine of formula I ##STR7## wherein R.sub.1 is hydrogen or methyl,
- m is 1, and
- R.sub.2 is C.sub.1 -C.sub.12 alkyl which is substituted by hydroxyl, by C.sub.1 -C.sub.12 alkoxy or by both hydroxyl and by C.sub.1 -C.sub.12 alkoxy.
Dependencies are inferred from the claim text.