Claims
- 1. A stabilized composition which comprises(a) candle wax and (b) an effective stabilizing amount of (i) at least one compound selected from the group consisting of the benzotriazole, benzophenone, α-cyanoacrylate, oxanilide, s-triazine, cinnamate, malonate, benzoate, salicylate and benzoxazin-4-one ultraviolet light absorbers and (ii) a metal selected from groups 6, 7, 8, 9, 10, 11, and 16 of the periodic table; where the amount of metal present is from about 15 ppb to about 3400 ppm by weight of metal based on the candle wax; and where the metal of group 14 is Sn.
- 2. A composition according to claim 1 wherein the metal is from about 15 ppb to about 3.4 ppm by weight of metal based on the candle wax.
- 3. A composition according to claim 2 wherein the metal is from about 15 ppb to about 600 ppb by weight of metal based on the candle wax.
- 4. A composition according to claim 1 wherein component (i) is a benzotriazole, a benzophenone or an s-triazine ultraviolet light absorber.
- 5. A composition according to claim 4 wherein the component (i) is a benzotriazole ultraviolet light absorber.
- 6. A composition according to claim 1 wherein component (i) is at least one compound selected from the group consisting of(a) 4-octyloxy-2-hydroxybenzophenone; (b) 4-methoxy-2-hydroxybenzophenone; (c) 2-(2-hydroxy-5-methylphenyl)-2H-benzotriazole; (d) 2-(2-hydroxy-5-tert-octylphenyl)-2H-benzothiazole; (e) 2-(2-hydroxy-3,5-di-tert-amylphenyl)-2H-benzothiazole; (f) octyl 3-(benzotriazol-2-yl)-5-tert-butyl-4-hydroxyhydrocinnamate; (g) 2-(2-hydroxy-3,5-di-tert-butylphenyl)-2H-benzothiazole; (h) 2-(2-hydroxy-5-tert-butylphenyl)-2H-benzotriazole; (i) 5-chloro-2-(2-hydroxy-3,5-di-tert-butylphenyl)-2H-benzothiazole; (j) 5-chloro-2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-2H-benzotriazole; (k) 2-(2-hydroxy-3-sec-butyl-5-tert-butylphenyl)-2H-benzotriazole; (l) 2-(2-hydroxy-4-octyloxyphenyl)-2H-benzotriazole; (m) 2-(2-hydroxy-3-dodecyl-5-methylphenyl)-2H-benzothiazole; (n) 2-[2-hydroxy-3,5-di(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole; (o) 2-[2-hydroxy-3-(α,α-dimethylbenzyl)-5-tert-octylphenyl]-2H-benzotriazole; (p) 2-{2-hydroxy-3-tert-butyl-5-[2-(omega-hydroxy-octa(ethyleneoxy)carbonyl)ethyl]phenyl}-2H-benzotriazole; (q) 2-{2-hydroxy-3-tert-butyl-5-[2-(octyloxy)carbonyl)ethyl]phenyl}-2H-benzotriazole; (r) 2-ethylhexyl p-methoxycinnamate; (s) 4-methoxy-2,2′-dihydroxybenzophenone; (t) 4,4′dimethoxy-2,2′-dihydroxybenzophenone; (u) 2,4-bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-octyloxyphenyl)-s-triazine; (v) 2,4-diphenyl-6-(2-hydroxy-4-hexyloxyphenyl)-s-triazine; (w) 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-do-tri-decyloxy-2-hydroxypropoxy)phenyl]-s-triazine; and (x) 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-do-tri-decyloxy-2-hydroxypropoxy)-5-α-cumylphenyl]-s-triazine.
- 7. A composition according to claim 6 wherein component (i) is at least one compound selected from the groups consisting of(a) 4-octyloxy-2-hydroxybenzophenone; (b) 4-methoxy-2-hydroxybenzophenone; (d) 2-(2-hydroxy-5-tert-octylphenyl)-2H-benzotriazole; (o) 2-[2-hydroxy-3-(α,α-dimethylbenzyl)-5-tert-octylphenyl]-2H-benzotriazole; (p) 2-{2-hydroxy-3-tert-butyl-5-[2-(omega-hydroxy-octa(ethyleneoxy)carbonyl)ethyl]phenyl}-2H -benzothiazole; and (q) 2-{2-hydroxy-3-tert-butyl-5-[2-(octyloxy)carbonyl)ethyl]phenyl}-2H-benzotriazole.
- 8. A composition according to claim 1 which additionally comprises an effective stabilizing amount of at least one stabilizer selected from the group consisting of hindered amine light stabilizers, phenolic antioxidants, organic phosphorus stabilizers, hydroxylamine stabilizers, nitrone stabilizers and amine oxide stabilizers.
- 9. A composition according to claim 8 which comprises a hindered amine stabilizer wherein the hindered amine is substituted on the N-atom by an alkoxy, cycloalkoxy or benzyloxy moiety and which is(a) bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (b) bis(1-cyclohexyloxy-2,2,6,6-tetramethylpiperdin-4-yl) sebacate; (c) 1-cyclohexyloxy-2,2,6,6-tetramethyl-4-octadecylaminopiperidine; (d) 2,4-bis[(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-6-(2-hydroxyethyl-amino)-s-triazine; (e) bis(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl) adipate; (f) the oligomeric compound which is the condensation product of 4,4′-hexamethylene-bis(amino-2,2,6,6-tetramethylpiperidine) and 2,4-dichloro-6-[(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-s-triazine end-capped with 2-chloro-4,6-bis(dibutylamino)-s-triazine; (g) the oligomeric compound which is the condensation product of 4,4′-hexamethylene-bis(amino-2,2,6,6-tetramethylpiperidine) and 2,4-dichloro-6-[(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-s-triazine end-capped with 2-chloro-4,6-bis(dibutylamino)-s-triazine; (h) 1-methoxy-4-hydroxy-2,2,6,6-tetramethylpiperidine; (i) 1-octyloxy-4-hydroxy-2,2,6,6-tetramethylpiperidine; (j) 1-cyclohexyloxy-4-hydroxy-2,2,6,6-tetramethylpiperidine; (k) 1-methoxy-4-oxo-2,2,6,6-tetramethylpiperidine; (l) 1-octyloxy-4-oxo-2,2,6,6-tetramethylpiperidine; (m) 1-cyclohexyloxy-4-oxo-2,2,6,6-tetramethylpiperidine, (n) bis(1-heptyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate, (o) bis(1-nonyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate, (p) bis(1-dodecyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate, or (q) N,N′, N″, N′″-tetrakis[(4,6-bis(butyl-1-octyloxy-2,2,6,6-pentamethylpiperidin-4-yl)-amino-s-triazin-2-yl]-1,10-diamino-4,7-diazadecane.
- 10. A composition according to claim 8 which comprises a hindered amine stabilizer wherein the hindered amine is substituted on the N-atom by a hydroxy-substituted alkoxy group and which is(a) 1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine; (b) 1-(2-hydroxy-2-methylpropoxy)-4-hydroxy-2,2,6,6-tetramethylpiperidine: (c) 1-(2-hydroxy-2-methylpropoxy)-4-oxo-2,2,6,6-tetramethylpiperidine; (d) bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (e) bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl) adipate; (f) bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperdin-4-yl) succinate; (g) bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperdin-4-yl) glutarate; or (h) 2,4-bis{N-[1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperdin-4-yl]-N-butylamino}-6-(2-hydroxyethylamino)-s-triazine.
- 11. A composition according to claim 8 which comprises a conventional hindered amine stabilizer where the N-atom is substituted by hydrogen, alkyl or acyl and which is(a) bis(2,2,6,6-tetramethylpiperidin-4-yl) sebacate, (b) bis(1,2,2,6,6-pentamethylpiperidin-4-yl) sebacate, (c) di(1,2,2,6,6-pentamethylpiperidin-4-yl) (3,5-di-tert-butyl-4-hydroxybenzyl)butylmalonate, (g) polycondensation product of 2,4-dichloro-6-tert-octylamino-s-triazine and 4,4′-hexa-methylenebis(amino-2,2,6,6-tetramethylpiperidine), (h) polycondensation product of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid, or (m) N,N′,N″,N′″-tetrakis[(4,6-bis(butyl-1,2,2,6,6-pentamethylpiperidin-4-yl)-amino-s-triazin-2-yl]-1,10-diamino-4,7-diazadecane.
- 12. A composition according to claim 8 which comprises a mixture of hindered amines selected from the group consisting ofN-alkoxy or cyclohexyloxy substituted hindered amines; N-hydroxy-alkoxy substituted hindered amines; and conventional hindered amines where the N-atom is substituted by hydrogen, alkyl or acyl.
- 13. A composition according to claim 8 wherein components (i), (ii) and additional stabilizers, in total, in the candle wax is 0.01 to 10% by weight based on the wax.
- 14. A composition according to claim 13 wherein components (i), (ii) and additional stabilizers, in total, in the candle wax is 0.1 to 2% by weight based on the wax.
- 15. A composition according to claim 14 wherein components (i), (ii) and additional stabilizers, in total, in the candle wax is 0.1 to 0.5% by weight based on the wax.
- 16. A composition according to claim 8 which comprises at least one stabilizer selected from the group consisting ofn-octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, neopentanetetrayl tetrakis(3,5-tert-butyl-4-hydroxyhydrocinammate), di-n-octadecyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, thiodiethylene bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate), 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 3,6-dioxaoctamethylene bis(3-methyl-5-tert-butyl-4-hydroxyhydrocinnamate), 2,6-di-tert-butyl-p-cresol, 2,2′-ethylidene-bis(4,6-di-tert-butylphenol), 1,3,5-tris(2,6-dimethyl-4-tert-butyl-3-hydroxybenzyl) isocynurate, 1,1,3,-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, 1,3,5-tris[2-(3,5-di-tert-butyl-4-hydroxyhydrocinnamoyloxy)ethyl] isocyanurate, 3,5-di-(3,5-di-tert-butyl-4-hydroxybenzyl)mesitol, hexamethylene bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate), 1-(3,5-di-tert-butyl-4-hydroxyanilino)-3,5-di(octylthio)-s-triazine, N,N′-hexamethylene-bis(3,5-dl-tert-butyl-4-hydroxyhydrocinnamamide), calcium bis(ethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate), ethylene bis[3,3-di(3-tert-butyl-4-hydroxyphenyl)butyrate], octyl 3,5-di-tert-butyl-4-hydroxybenzylmercaptoacetate, bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamoyl)hydrazide, N,N′-bis[2-(3,5-dl-tert-butyl-4-hydroxyhydrocinnamoyloxy)-ethyl]oxamide, the N,N-dialkylhydroxylamine prepared from di(hydrogenated tallow)amine by direct oxidation, and di(C16-C18)alkyl methyl amine oxide.
- 17. A composition according to claim 16 which comprises at least one stabilizer selected from the group consisting ofneopentanetetrayl tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate), n-octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 2,6-di-tert-butyl-p-cresol and 2,2′-ethylidene-bis(4,6-di-tert-butylphenol).
- 18. A composition according to claim 1 wherein the metal is selected from the group consisting of groups 9, 10 and 14 of the periodic table.
- 19. A composition according to claim 18 wherein the metal is Ni or Sn.
- 20. A composition according to claim 18 wherein the metal is Sn.
- 21. A composition according to claim 1 wherein the metal is in the form of a metal complex and is(a) 2,2′-{(dibutylstannylene)bis[oxy-(5-tert-octyl-2,1-phenylene)]}-bis-(5-trifluoromethyl-2H-benzotriazole); or (b) dibutyltin bis-[3-(5-chloro-2H-benzotriazol-2-yl)-5-tert-butyl-4-hydroxyhydrocinnamate].
- 22. A method of stabilizing candle wax, which method comprisesadding to a candle wax composition an effective stabilizing amount of (i) at least one compound selected from the group consisting of the benzotriazole, benzophenone, α-cyanoacrylate, oxanilide, s-triazine, cinnamate, malonate, benzoate, salicylate and benzoxazin-4-one ultraviolet light absorbers and (ii) a metal compound wherein the metal of said metal compound is selected from groups 6, 7, 8, 9, 10, 11, and 16 of the periodic table; and where the metal of component (ii) is from about 15 ppb to about 3400 ppm by weight based on the candle wax; and where the metal of group 14 is Sn.
- 23. A method according to claim 22 where the metal compound is a UVA-metal complex or a UVA-metal salt.
- 24. A method according to claim 22 where the metal compound is an organometallic compound.
- 25. A method according to claim 24 where the metal compound is dibutyltin dilaurate or dibutyltin dimethoxide.
- 26. A method according to claim 22 where component (i) is a benzotriazole, a benzophenone or an s-triazine ultraviolet light absorber.
- 27. A method according to claim 22 which comprises adding to the candle wax composition an effective stabilizing amount of at least one other stabilizer selected from the group consisting of the hindered amine light stabilizers, phenolic antioxidants, organic phosphorus stabilizers, hydroxylamine stabilizers, nitrone stabilizers and amine oxide stabilizers.
- 28. A method according to claim 22 which comprises adding to the candle wax composition an effective stabilizing amount of at least one other stabilizer selected from the group consisting of the hindered amine light stabilizers.
Parent Case Info
This is a continuation of application Ser. No. 09/875,770, filed Jun. 6, 2001, now U.S. Pat. No. 6,562,085.
US Referenced Citations (16)
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EP |
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Continuations (1)
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Parent |
09/875770 |
Jun 2001 |
US |
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10/317313 |
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