| abstract |
A mixture comprising a compound of formula (1) and a compound of formula (2) is disclosed.n n n n n n n n Wherein A 1 , A 2 A 3 A 4 A 5 A 6 is N or -CH;n n n Y 1 , Y 2 , Y 3 , Y 4 , Y 5 and Y 6 are hydrogen or C 1 -C 12 alkoxy;n n n X 1 , X 2 , X 3 , X 4 , X 5 , and X 6 are hydrogen or C 1 -C 12 alkoxy or C 1 -C 12 alkyl;n n n R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are hydrogen, or R 7 and R 8, R 9 and R 10, R 11 and R 12 may form a bond;n n n n n n n n Wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of C 1 -C 16 alkyl, substituted (or chief) alkyl, C 1 -C 16 acyl, polyethyleneoxy, Lt; RTI ID = 0.0 > a < / RTI > polymer backbone or a portion thereof;n n n B 1, B 2, B 3 , B 4, B 5, B 6 is hydrogen, C 1 -C 16 alkyl, C 1 -C 16 alkoxy, nitro, halo, cyano, amido, or a diazo C 1 - Lt; / RTI > alkyl esters. |