UV absorbers
AssigneeCiba-Geigy Corporation
InventorVien V. Toan
Life of this patent
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Abstract
Novel UV absorbers of the bis- or tris-2'-hydroxyphenyltriazine type and their use in photographic materials, inks or recording materials for ink-jet printing, and surface coatings are described which conform to the formula ##STR1## in which the radicals R.sub.1 and R.sub.9 are as defined in claim 1.
Claims3
A compound of the formula ##STR34## in which the radicals R.sub.1, independently of one another, are--(CH.sub.2 CHR.sub.5 --O).sub.k --R.sub.8, --CH.sub.2 --CH(OH)--CH.sub.2 --O--(CH.sub.2 CHR.sub.5 --O).sub.n --R.sub.8, --(CH.sub.2).sub.1 --CHR.sub.6 --C(O)--O--(CH.sub.2 CHR.sub.5 --O).sub.n --R.sub.8 or --CH.sub.2 --CH(CH.sub.2 --OR.sub.7)--O--C(O)--(CH.sub.2 CHR.sub.5 --O).sub.n --R.sub.8 ;
- R.sub.2 is H, OH, C.sub.1-C.sub.12 alkyl, F or Cl;
- R.sub.3 is H, OR.sub.9, C.sub.1 -C.sub.12 alkyl, F or Cl;
- R.sub.4 is H, OR.sub.9, C.sub.1 -C.sub.12 alkyl, F, Cl or, if R.sub.2 is OH, is alternatively OR.sub.1 ;
- R.sub.5 is H or CH.sub.3 ;
- R.sub.6 is C.sub.1-C.sub.16 alkyl or, if 1 is not 1, is alternatively H;
- R.sub.7 is C.sub.1 -C.sub.14 alkyl or phenyl;
- R.sub.8 is H, C.sub.1 -C.sub.14 alkyl, phenyl or C.sub.1 -C.sub.4 alkylphenyl;
- R.sub.9 is C.sub.1 -C.sub.4 alkyl;
- k is a number from 2 to 16;
- l is a number from 0 to 16 and
- n is a number from 1 to 16.
Dependencies are inferred from the claim text.