Claims
- 1. An aqueous dispersion of a mixture of sparingly soluble UV absorbers, which comprises
- (a) 5 to 50% by weight of a mixture of a benzotriazole of formula ##STR16## and a 2-hydroxybenzophenone of formula ##STR17## wherein R is halogen, C.sub.1 -C.sub.12 alkyl, lower alkoxy, lower alkoxycarbonyl, cycloalkyl, aryl, C.sub.1 -C.sub.12 alkylaryl or aralkyl, and the rings A and B, each independently of the other, may be further substituted by halogen, hydroxy, lower alkyl, lower alkoxy or lower alkoxycarbonyl,
- R.sub.1 is hydrogen, hydroxy, C.sub.1 -C.sub.14 alkoxy or phenoxy,
- R.sub.2 is hydrogen, halogen or lower alkyl,
- R.sub.3 is hydrogen, hydroxy or lower alkoxy, and
- R.sub.4 is hydrogen or hydroxy,
- (b) 2 to 18% by weight of an anionic compound, and
- (c) 0 to 10% by weight of a nonionic compound.
- 2. A dispersion according to claim 1, which contains the compounds of formulae (1) and (2) in a weight ratio (1):(2) of 30:1 to 1:30.
- 3. A dispersion according to claim 1, which contains the compounds of formulae (1) and (2) in a weight ratio (1):(2) of 5:1 to 1:5, wherein the weight ratio of the compound of formula in the dispersion (1) is smaller than 20%.
- 4. A dispersion according to claim 1, wherein the ring A in formula (1) is substituted in 5-position by halogen, lower alkyl or lower alkoxy.
- 5. A dispersion according to claim 1, wherein the benzene ring B in formula (1) is further substituted in vicinal position to the hydroxyl group by lower alkyl or halogen.
- 6. A dispersion according to claim 5, wherein the benzotriazole of component (a) has the formula ##STR18## wherein R.sub.5 is halogen, lower alkyl or lower alkoxy, and R.sub.6 and R.sub.7 are each independently of the other hydrogen, halogen, lower alkyl or lower alkoxy.
- 7. A dispersion according to claim 6, wherein R.sub.5 is lower alkyl, R.sub.6 is hydrogen or lower alkyl and R.sub.7 is hydrogen, chloro or methyl.
- 8. A dispersion according to claim 1, wherein R.sub.1 is hydroxy or C.sub.1 -C.sub.14 alkoxy in formula (2).
- 9. A dispersion according to claim 1, wherein component (b) is a compound selected from the group consisting of
- (ba) acid esters, or their salts, of alkylene oxide polyadducts of formula ##STR19## wherein X is the acid radical of an inorganic oxygen-containing acid or is the radical of an organic acid, and
- Y is C.sub.1 -C.sub.12 alkyl, aryl or aralkyl,
- "alkylene" is the ethylene or propylene radical, and
- m is 1 to 4 and n is 4 to 50,
- (bb) polystyrene sulfonates,
- (bc) fatty acid taurides,
- (bd) alkylated diphenyl oxide mono- or disulfonates,
- (be) sulfonates of polycarboxylates,
- (bf) polyadducts of 1 to 60 mol of ethylene oxide and/or propylene oxide with fatty amines, fatty amides, fatty acids or fatty alcohols, each of 8 to 22 carbon atoms or with trihydric to hexahydric alkanols of 3 to 6 carbon atoms, which polyadducts have been convened into an acid ester with an organic dicarboxylic acid or an organic polybasic acid,
- (bg) ligninsulfonates, and
- (bh) formaldehyde condensates.
- 10. A dispersion of claim 9 wherein component (b) is a compound selected from the group consisting of an acid ester of formula 4 wherein X is a sulfuric or phosphoric acid radical and polyadducts of 2 to 30 mol of ethylene oxide and/or propylene oxide with fatty amines, fatty amides, fatty acids or fatty alcohols, each of 8 to 22 carbon atoms or with trihydric to hexahydric alkanols of 3 to 6 carbon atoms, which polyadducts have been converted into an acid ester with an organic dicarboxylic acid or an organic polybasic acid.
- 11. A dispersion according to claim 9, wherein component (b) is a compound of formula (4), or the salt thereof, wherein
- X is the radical of phosphoric acid,
- n is 6 to 30,
- "alkylene" is the ethylene radical,
- m is 1 to 4 and
- Y is C.sub.1 -C.sub.12 alkyl, benzyl, .alpha.-methylbenzyl, .alpha.,.alpha.-dimethylbenzyl, .beta.-phenethyl, .alpha.-tolylethyl or phenisopropyl.
- 12. A dispersion according to claim 9, wherein component (b) is a condensate of formaldehyde and an aromatic sulfonic acid.
- 13. A dispersion according to claim 12, wherein component (b) is a condensate of formaldehyde and naphthalenesulfonic acid.
- 14. A dispersion according to claim 12, wherein component (b) is a condensate of formaldehyde and ditolyl ether sulfonate.
- 15. A dispersion according to claim 1, wherein optional component (c) is a nonionic compound selected from the group consisting of
- (ca) alkylene oxide polyadducts of formula ##STR20## wherein Y.sub.1 is C.sub.1 -C.sub.12 alkyl, aryl or aralkyl, "alkylene" denotes an ethylene radical or a propylene radical and
- m.sub.1 is 1 to 4 and n.sub.1 is 4 to 50,
- (cb) polyadducts of alkylene oxide with saturated or unsaturated monohydric to hexahydric aliphatic alcohols, fatty acids, fatty mines, fatty amides, diamines, sorbitan esters;
- (cc) block polymers of alkylene oxide condensates,
- (cd) polymers of vinyl pyrrolidone, vinyl acetate or vinyl alcohol, and
- (ce) copolymers or terpolymers of vinyl pyrrolidone with vinyl acetate and/or vinyl alcohol.
- 16. A dispersion according to claim 15, wherein component (c) is a compound of formula (10), wherein
- n.sub.1 is 6 to 30,
- "alkylene" is the ethylene radical and
- Y.sub.1 is 4-nonyl and m.sub.1 is the number 1, or
- Y.sub.1 is nonyl and m.sub.1 is the number 2, or
- Y.sub.1 is .alpha.-methylbenzyl and m.sub.1 is the number 1, 2 or 3.
- 17. A dispersion according to claim 1, which additionally comprises a stabiliser or thickener as component (d).
- 18. A dispersion according to claim 16, wherein component (d) is a polysaccharide.
- 19. A dispersion according to claim 1, which additionally comprises a preservative and/or an antifreeze agent.
- 20. A dispersion according to claim 1, wherein component (a) is a mixture of a UV absorbing benzotriazole and a 2-hydroxybenzophenone of formulae (1) and (2), and component (b) is a condensate of formaldehyde and an aromatic sulfonic acid.
- 21. A dispersion according to claim 20, wherein component (a) is a mixture of a UV absorbing benzotriazole of formula ##STR21## wherein R.sub.5 is lower alkyl, R.sub.6 is hydrogen or lower alkyl, and R.sub.7 is hydrogen, chloro or methyl, and
- a 2-hydroxybenzophenone of formula (2), wherein R.sub.1 is C.sub.1 -C.sub.14 alkoxy, and component (b) is a condensate of formaldehyde with an aromatic sulfonic acid.
- 22. A dispersion according to claim 17, which comprises, in each case based on the entire dispersion,
- 5-50 percent by weight of component (a),
- 20-18 percent by weight of component (b),
- 0-10 percent by weight of component (c),
- 0-5 percent by weight of component (d),
- 0-8 percent by weight of further anionic components other than component (b),
- 0-8 percent by weight of further nonionic components other than component (c),
- 0-1 percent by weight of antifoam,
- 0-1 percent by weight of preservative, and
- 0-20 percent by weight of antifreeze agent.
- 23. A process for dyeing synthetic fibres with disperse or cationic dyes, which comprises dyeing said material in the presence of an aqueous dispersion of a mixture of a benzotriazole and a 2-hydroxybenzophenone as claimed in claim 1.
- 24. A process of claim 23 wherein the synthetic fibre is a textile material containing polyester fibers or acid-modified polyester fibers.
- 25. The fibre material dyed by a process as claimed in claim 23.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3945/90 |
Dec 1990 |
CHX |
|
Parent Case Info
This application is a continuation of application Ser. No. 07/805,431, filed Dec. 11, 1991, abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0345219 |
Dec 1989 |
EPX |
1195307 |
Nov 1959 |
FRX |
2546544 |
Nov 1984 |
FRX |
Continuations (1)
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Number |
Date |
Country |
Parent |
805431 |
Dec 1991 |
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