Patent ID: 8377336

Claim:
A method comprising adding at least one tricyclic phenolic compound to an inanimate organic material, wherein said at least one tricyclic phenolic compound is added in an amount of 0.0001 to 5% by weight based on the inanimate organic material, and wherein said at least one tricyclic phenolic compound has the following general formula V: wherein R 1 is a hydrocarbyl radical which has from 1 to 3000 carbon atoms and may be interrupted by one or more heteroatoms from the group of O and S and/or may be interrupted by one or more NR 6 moieties, R 6 is a hydrogen atom or a C 1 - to C 4 -alkyl radical, R 3 , R 5 , R 8 and R 10 are hydrogen, R 2 , R 4 , and R 9 are each independently hydrogen atoms or hydrocarbyl radicals which have from 1 to 3000 carbon atoms and may be interrupted by one or more heteroatoms from the group of O and S and/or by one or more NR 6 moieties, where R 6 is as defined above, wherein R 9 may also be a radical of the formula Z′: wherein R 7 has the same definition as R 8 or R 10 as defined above, or R 7 may be a radical derived from a tetrahydrobenzoxazine of the general formula I, R 15 is hydrogen or a radical derived from a tetrahydrobenzoxazine of the general formula I, and R 11 and R 12 may be the same or different and are each hydrogen or a C 1 - to C 10 -alkyl radical: wherein R 1 , R 2 , R 3 , R 4 and R 5 are as defined above, with the proviso that at least one of R 1 , R 2 , R 4 , and R 9 has from 13 to 3000 carbon atoms, and the remaining substituents from the group of R 1 , R 2 , R 4 , and R 9 , when they are hydrocarbyl radicals, each have from 1 to 20 carbon atoms.