Patent ID: 7731985

Claim:
A method for the antimicrobial treatment of a surface, which comprises contacting said surface with a 4-aminopyrimidine of formula R 1 is biphenyl or C 6 -C 10 aryl which is unsubstituted or substituted by halogen, C 1 -C 5 alkyl, C 1 -C 5 alkoxy or by amino; R 2 is biphenyl or C 6 -C 10 aryl which is unsubstituted or substituted by halogen, C 1 -C 5 alkyl, C 1 -C 5 alkoxy or by amino; R 3 is phenyl which is unsubstituted or substituted by one or more halogen atoms; R 4 is hydrogen; R 5 is C 1 -C 20 alkyl substituted by N(R″)R′″ which alkyl is either further unsubstituted or further substituted by a heterocyclic radical or uninterrupted or interrupted by one or more —O— or groups or by a bivalent heterocyclic radical; or R 4 and R 5 , together with the nitrogen atom linking them, form a radical of R′ is hydrogen; or C 1 -C 3 alkyl; R″ and R′″ are each independently of the other hydrogen; C 1 -C 5 alkyl; or hydroxy-C 1 -C 5 alkyl; X is R″″ is hydrogen; C 1 -C 4 alkyl; or heteroaryl-C 1 -C 4 alkyl; and n 1 and n 2 are each independently of the other from 1 to 8.