C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 211/46 (2006.01) C07D 211/92 (2006.01) C08K 5/3435 (2006.01) C08K 5/3475 (2006.01) C09K 15/30 (2006.01)
Patent
CA 2206181
A mixture containing two different compounds of the formula (I) (See Fig. I) wherein n is an integer from 2 to 22 and R is hydrogen, C1-C8alkyl, -O-, -OH, -NO, -CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C6alkenyl, C3-C6alkynyl, C1-C8acyl or C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; the weight ratio of the two compounds being 1:20 to 20:1, is useful as stabilizer for organic materials against degradation induced by light, heat or oxidation.
Un mélange contenant deux composés différents de formule (I) (Voir Fig. I) où n est un nombre entier compris entre 2 et 22 et R est un hydrogène, un alkyle en C1-C8, -O-, -OH, -NO, -CH2CN, un alcoxy en C1-C18, un cycloalcoxy en C5-C12, un alkényle en C3-C6, un alkynyle en C3-C6, un acyle en C1-C8 ou un phénylalkyle en C7-C9 dont le noyau phényle est non substitué ou substitué par 1, 2 ou 3 groupes alkyle en C1-C4; le rapport pondéral des deux composés varie de 1:20 à 20:1; ce mélange est utile comme stabilisant des matières organiques contre la dégradation provoquée par la lumière, la chaleur ou l'oxydation.
Pitteloud Rita
Valet Andreas
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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