Compounds of formula
##STR1##
wherein
R1 and R2 are each independently of the other hydrogen;
unsubstituted or mono- or poly-halo-substituted C1-C20alkyl,
C1-C20alkoxy, C2-C20alkenyl, C2-C20alkynyl,
C3-C18cycloalkyl, C3-C7cycloalkyl-C1-C20alkyl;
hydroxy; C1-C6alkoxy-C1-C20alkyl; carboxy;
C1-C6alkyloxycarbonyl; cyano; mono- or di-C1-C20alkylamino;
C1-C6alkylamino-C1-C20alkyl; halogen;
phenyl; unsubstituted or C1-C5alkyl-, halo- or hydroxy-substituted
phenyl-C1-C20alkyl, phenoxy or phenyl-C1-C20alkoxy;
or R1 and R2 form a polymethylene chain of formula —(CH2)m—
wherein m=2-12;
R3 is unsubstituted C7-C20alkyl; or amino-,
hydroxy-, carboxy- or C1-C6alkyloxycarbonyl-substituted C2-C20alkyl;
C8-C18cycloalkyl; C8-C20alkenyl; C8-C20alkynyl;
C3-C7cycloalkyl-C8-C20alkyl; C1-C4alkoxy-C8-C20alkyl;
R7R8N—C7-C20alkyl; phenyl; phenyl-C1-C4alkyl;
or phenyl-C1-C4alkoxy;
R4 is hydrogen; unsubstituted or C1-C5alkyl-,
halo- or hydroxy-substituted C1-C20alkyl, C2-C20alkenyl,
C2-C20alkynyl, C3-C20cycloalkyl, C3-C7cycloalkyl-C1-C20alkyl,
C1-C20alkoxy-C1-C6alkyl or R7R8N—C1-C20alkyl,
phenyl, phenyl-C1-C20alkyl or phenoxy-C1-C20alkyl;
R5 and R6 are each independently of the other hydrogen;
C1-C20alkyl; C2-C20alkenyl; C2-C20-alkynyl;
C3-C18cycloalkyl; C3-C7cycloalkyl-C1-C20alkyl;
hydroxy; C2-C20alkoxy; C1-C6alkoxy-C1-C20alkyl;
carboxy; C1-C6alkyloxycarbonyl; cyano; nitro; C1-C20alkylamino;
C1-C20alkylaminoalkyl; C1-C20haloalkyl;
C1-C20haloalkoxy; halogen; unsubstituted or C1-C5alkyl-,
halo- or hydroxy-substituted phenyl, phenoxy or phenyl-C1-C20alkyl
or phenyl-C1-C20alkoxy; or R5 and R6 together
form a polymethylene chain of formula —(CH2)m—
wherein m=2-12; and
R7 and R8 are each independently of the other hydrogen;
C1-C20alkyl; C3-C20alkenyl; C3-C20alkynyl;
C3-C7cycloalkyl; C3-C20cycloalkyl-C1-C4alkyl;
phenyl; or phenyl-C1-C4alkyl are suitable for the antimicrobial
treatment of surfaces.
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