C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 307/83 (2006.01) C08K 5/00 (2006.01) C08K 5/15 (2006.01) C08K 5/1535 (2006.01)
Patent
CA 2096326
3-(Acyloxyphenyl)benzofuran-2-one stabilisers Abstract of the disclosure: Compounds of the formula (1) Image in which R2, R3, R4 and R5, independently of one another, are hydrogen, C1- C25alkyl, C7-C9phenylalkyl, unsubstituted or C1-C4alkyl-substituted phenyl, unsubstituted or C1-C4- alkyl-substituted C5-C8cycloalkyl; C1-C18alkoxy, hydroxyl, C1-C25alkanoyloxy, C3-C25a1- kenoyloxy, C3-C25alkanoyloxy which is interrupted by oxygen, sulfur or Image C6-C9cycloalkylcarbonyloxy, benzoyloxy or C1-C12alkyl-substituted benzoyloxy, where R16 is hydrogen or C1-C8alkyl, or, furthermore, the radicals R2 and R3 or the radicals R4 and R5 together with the carbon atoms to which they are bound form a phenyl ring, R4 is additionally -(CH2)n-COR11, in which n is 0, 1 or 2, R11 is hydroxyl, Image C1-C18alkoxy or Image R14 and R15, indepedently of one another, are hydrogen or C1-C18alkyl, M is an r-valent metal cation and r is 1, 2 or 3, R7, R8, R9 and R10, indepen- dently of one another, are hydrogen, C1-C4alkyl or C1-C4alkoxy, with the proviso that at least one of the radicals R7, R8, R9 and R10 is hydrogen and, in the case where R3, R5, R6, R7 and R10 are hydrogen, R4 is additionally a radical of the formula (2) Image in which R2, R8 and R9 are as defined above and R1 is as defined below for m = 1, and R12 and R13, independently of one another, are hydrogen, C1-C12alkyl or phenyl, m is 1 or 2, and, in the case where m is 1, R1 is hydrogen, C1-C25alkanoyl, C3-C25alkenoyl; C3-C25a1- kanoyl which is interrupted by oxygen, sulfur or Image ; C6- C9cycloalkylcarbonyl, benzoyl or C1-C12alkyl-substituted benzoyl, R16 is as defined above and R6 is hydrogen or a radical of the formula (3) Image in which R1, R2, R3, R4, R5, R7, R8, R9 and R10 are as defined above, and, in the case where m is 2, R1 is Image , in which R17 is a direct bond, C1-C18alkylene, C2- C18- alkylene which is interrupted by oxygen, sulfur or Image ;C2-C18alkenylene, C2- C20a1- kylidene, C7-C20phenylalkylidene, C5-C8cycloalkylene, C7-C8bicycloalkylene or pheny- lene, R16 is as defined above and R6 is hydrogen, are described as stabilisers for organic materials against oxidative, thermal or light-induced degradation.
Ag Ciba-Geigy
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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