| 摘要 |
<p>1. A diquaternary ammonium salt of the formula see diagramm : EP0221855,P13,F3 in which A1 and A2 are each alkylene having 2 to 5 carbon atoms, Q1 and Q2 are each -NH- or -O-, R1 , R2 , R3 and R4 are each alkyl, hydroxyalkyl or alkoxyalkyl, each having 1 to 4 carbon atoms in each alkyl moiety, Y1 **n(cation) is the anion of a strong acid, Z1 is alkylene which has 3 to 24 carbon atoms, is substituted by hydroxyl and may be interrupted by oxygen atoms, and n is 1 or 2.</p> |
