Patent ID: 7462715

Claim:
A 1,3,5-triazine compound represented by the following formula I: wherein R 1 and R 2 are each independently a methyl group, an ethyl group, a hydroxyalkyl group having 2 to 5 carbon atoms, —(CH 2 CH 2 O) m R 6 (where m is an integer of 1 to 120, and R 6 is a hydrogen atom, a methyl group, an ethyl group, or a propyl group), —(CH 2 CH 2 NR 7 ) m H (where m is an integer of 1 to 120, and R 7 is an alkyl group having 2 to 5 carbon atoms, an N,N-dialkylaminoethyl group or —CH 2 CH 2 N + (CH 3 ) 3 ), —CH 2 CH 2 SO 3 − , —CH 2 CH 2 N + (CH 3 ) 3 , or an alkyl group having 6 to 20 carbon atoms, but both R 1 and R 2 are not alkyl groups having 6 to 20 carbon atoms at the same time; one or two of R 3 , R 4 and R 5 are methyl groups, and the remaining R 3 , R 4 and R 5 are each independently —CH 2 COO—C n H 2n+1 , —C n H 2n+1 , or —C 6 H 4 -p-C n H 2n+1 , where n is an integer of 6 to 20, and —C n H 2n+1 is linear; and X − is a halide ion, a triflate anion, a nitrate ion, a sulfate ion, a hydrogensulfate ion, a sulfonate ion, a tetrafluoroborate ion, or a perchlorate ion.