| 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. |
