Patent ID: 6544305
Filing Date: 2003-04-08
Classification: C08K,C08L,C11C

Abstract:
A composition which consists essentially of(a) candle wax which is white and unscented; white and scented; dyed and unscented; dyed and scented; dipped and unscented; or dipped and scented, and (b) an effective stabilizing amount of a combination of (i) a piperazinone compound of formula (II) and (ii) a UV absorber or an antioxidant, or a UV absorber and an antioxidant, wherein the ratio by weight of (i) to (ii) is from 10:1 to 1:10, and whereinn is 1 or 2, when n is 1, G is alkyl of 1 to 18 carbon atoms, alkyl of 2 to 18 carbon atoms substituted by NH2, by OH, by halogen, by â€”OR6, by 4-hydroxy-3,5-di-tert-butylphenyl or by 4-hydroxy-3,5-dimethylphenyl, or by a mixture of these groups; or G is alkyl of 2 to 18 carbon atoms interrupted by â€”Oâ€”, by â€”COâ€”, by â€”NHâ€” or by â€”NR6â€” or by a mixture of said groups; or G is alkyl of 1 to 18 carbon atoms substituted by â€”COOR7 or by phenyl; when n is 2, G is alkylene of 2 to 10 carbon atoms, alkenylene of 4 to 12 carbon atoms, alkylene of 3 to 15 carbon atoms substituted by one to four OH or said alkylene interrupted by one to four oxygen atoms; or G is phenylene, C1-C4alkylphenylene, â€”COâ€”(CH2)pâ€”COâ€”, â€”COOâ€”, â€”CONHâ€”, â€”NHâ€” or â€”NR6â€”;R1, R2, R3 and R4 are independently alkyl of 1 to 12 carbon atoms, said alkyl substituted by one or two hydroxyl groups; or R1 and R2 together, R3 and R4 together or R1 and R2 together and with R3 and R4 together are tetramethylene, pentamethylene or pentamethylene substituted by methyl; R5 is hydrogen, oxyl, hydroxyl, cyanoethyl, phenylalkyl of 7 to 15 carbon atoms, said phenylalkyl substituted on the phenyl ring by one to three radicals selected from alkyl of 1 to 4 carbon atoms and alkoxy of 1 to 4 carbon atoms, phenylalkoxy of 7 to 15 carbon atoms, said phenylalkoxy substituted on the phenyl ring by one to three radicals selected from alkyl of 1 to 4 carbon atoms and alkoxy of 1 to 4 carbon atoms, cycloalkoxy of 5 to 12 carbon atoms, alkenyl of 3 to 8 carbon atoms, alkynyl of 3 to 8 carbon atoms, alkoxy of 1 to 24 carbon atoms, alkyl of 1 to 24 carbon atoms, said alkyl substituted by one or two hydroxyl groups, said alkyl substituted by alkylcarbonyloxy of 2 to 18 carbon atoms, or said alkyl interrupted by one to twenty oxygen atoms and substituted by one hydroxyl, by alkylcarbonyloxy of 2 to 18 carbon atoms or by 4-hydroxy-3,5-di-tert-butylbenzoyloxy; or R5 is alkanoyl of 1 to 8 carbon atoms, alkenoyl of 3 to 5 carbon atoms, alkanoyloxy of 1 to 18 carbon atoms, glycidyl, or a group â€”CH2CH(OH)â€”E where E is hydrogen, methyl or phenyl; p is 1 to 12; X is â€”Oâ€”, â€”NHâ€” or â€”NR6â€”; Z is â€”NH2, â€”NHR6, â€”N(R6)2 or alkoxy of 1 to 18 carbon atoms; R6 is alkyl of 1 to 8 carbon atoms, alkanoyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenylalkyl of 7 to 15 carbon atoms which is unsubstituted or substituted on the phenyl ring by alkyl of 1 to 4 carbon atoms, by alkoxy or 1 to 4 carbon atoms or by a mixture of said groups; or R8 is alkyl of 1 to 8 carbon atoms or alkanoyl of 1 to 8 carbon atoms substituted by â€”OH, by alkoxy of 1 to 12 carbon atoms, by benzophenonyl or benzophenonyloxy where one or both phenyl rings of the benzophenone moiety are unsubstituted or substituted by OH, by halogen, by alkyl of 1 to 4 carbon atoms, by alkoxy of 1 to 4 carbon atoms or by a mixture of such groups; and R7 is hydrogen, alkyl of 1 to 18 carbon atoms, alkyl of 2 to 18 carbon atoms which is substituted by â€”NH2, by â€”NHR6, by â€”N(R6)2, by nitro, by hydroxy, by alkoxy of 1 to 18 carbon atoms or by a mixture of said groups; or R7 is alkenyl of 3 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, or said cycloalkyl which is substituted by alkyl of 1 to 4 carbon atoms or is interrupted by â€”Oâ€”, or R7 is phenyl or phenylalkyl of 7 to 15 carbon atoms; with the proviso that, when the UV absorber is a benzotriazole, said benzotriazole has only a hydrogen atom at the 5-position of the benzo ring.