polytetrahydrobenzoxazine, process for the preparation of polytetrahydrobenzoxazine, bistetrahydrobenzoxazine, use of quaternized polytetrahydrobenzoxazine or bistetrahydrobenzoxazine, additive concentrate, fuel base composition, and lubricating oil base composition

摘要

Polytetrahydrobenzoxazines and bistetrahydrobenzoxazines obtainable by (A) reaction of at least one diamine of formula H2N-A-NH2 with a C1 to C12 aldehyde and a C1 to C8 alkanol at 20 to 80°C with elimination and removal of water, (B) reaction of the condensation product from (A) with a phenol which carries a long-chain substituent, at 30 to 120°C, and optionally (C) heating of the reaction product from (B) at 125 to 280°C. The resultant polytetrahydrobenzoxazines and bistetrahydrobenzoxazines are suitable as fuel or lubricant additives, more particularly as detergent additives for diesel fuels.