Patent ID: 7670512

Claim:
A second order nonlinear optic polyimide polymer comprising repeating units represented by the formula: wherein: R 1 is a functionality group selected from —OH and —COOH; R 2 is a group represented by the formula selected from wherein when R 1 is —OH, R 2 is a group represented by the formula: when R 1 is —COOH, R 2 is a group represented by the formula: wherein R is a phenyl or styryl group that is 3-substituted with a group selected from the —NO 2 , —COCH 3 , —CN, —SO 2 NH 2 , Br and Cl; and x+y+z=100% of the repeating units, x is at least 1%, and either or both of y and z can be zero.