Patent ID: 7901503

Claim:
A complex represented by Formula (1): [Q[SO 3 − ] m M n k+ ] p D q E r (1) wherein: Q is an organic pigment moiety; D is independently [R 1 R 2 N(CH 2 CH(CH 3 )O) x (CH 2 CH 2 O) y R 4 ]; E is independently [R 1 R 2 R 3 N(CH 2 CH(CH 3 )O) x (CH 2 CH 2 O) y R 4 ] + ; x and y independently range from 0 through 300, provided that for D and E selected independently, the sum of x+y is at least 3; M is independently selected from the group consisting of Al, Fe, Ca, Mg, Sr, Ba, Mn, Cu, Ni, Cd, Co, Zn, Cr, Ti, and Zr; R 1 , R 2 , and R 3 are independently selected from the group consisting of H, alkyl, aryl, alkaryl, poly-(oxyalkylene), provided that for E, if both R 1 and R 2 are H, then R 3 is H; R 4 is independently selected from the group consisting of H, alkyl, aryl, and alkaryl; k is an integer of from 1 through 4; m ranges from 0.1through 6; n ranges from 0.1through 6; p ranges from 1 through 99; q ranges from 0 through 99; r ranges from 0 through 99; and (q+r) ranges from 0.01 through 99.