| abstract |
The present invention relates to a process for the preparation of a compound of formula I in which the benzene ring per molecule is up to 20 and the tetrahydrobenzoxazine I is reacted with one or more of the same or different phenol II and / or one or more identical or different tetrahydrobenzooxazoles I, And the use of polycyclic phenolic compounds as stabilizers for stabilizing non-biological organic materials against thermal action: (I) In this formula, R 1 is a hydrocarbyl radical, R 2 , R 3 , R 4 and R 5 are each independently a hydrogen atom, a hydroxyl group or a hydrocarbyl radical, ≪ RTI ID = 0.0 & In this formula, R 7 , R 8 , R 9 and R 10 are each independently a hydrogen atom, a hydroxyl group or a hydrocarbyl radical, Provided that at least one of the substituents has 13 to 3,000 carbon atoms and the remaining substituent is a hydrocarbyl radical, they each have 1 to 20 carbon atoms. |