The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1981
Filed:
May. 10, 1979
Siegfried Rosenberger, Riehen, CH;
Andreas Schmidt, Reinach, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
A phenol of the formulae I, II or III ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 are independent of one another and one of these is C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl or C.sub.7 -C.sub.9 -aralkyl and the others are hydrogen, C.sub.1 -C.sub.12 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 are independent of one another and one of these is C.sub.1 -C.sub.12 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl and the others are hydrogen, C.sub.1 -C.sub.12 -alkyl or C.sub.5 -C.sub.6 cycloalkyl, or R.sub.4 and R.sub.5, or R.sub.6 and R.sub.7, together with the C atom which links them, form a 5-12-membered ring, R.sub.8, R.sub.9 and R.sub.10 are independent of one another and one of these is C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl or C.sub.7 -C.sub.9 -aralkyl and the others are hydrogen, C.sub.1 -C.sub.12 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl, x and y independently of one another are 0, 1, 2 or 3, one of m and n is 1 and the other is 0 or 1, A is a monovalent, divalent or trivalent hydrocarbon radical which, in formula II, can also be interrupted by S, and Z is 1, 2 or 3, corresponding to the valency of A, and, in compounds of the formula II and III, m is 1 and R.sub.4 and R.sub.5 independently of one another are C.sub.1 -C.sub.12 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl and, in compounds of the formula I, R.sub.6 can be bridged with A to form a carbocyclic structure as stabilizers for organic material.