Patent ID: 7262252

Claim:
A fluorine-containing resin composition which is used for a nonlinear optical material and comprises (I) a fluorine-containing prepolymer and (II) an organic compound exhibiting a second- or higher-order nonlinear optical effect, characterized in that the fluorine-containing prepolymer (I): (1) is a non-crystalline polymer having a fluorine content of not less than 25% by weight and (2) has a group Y 1 including a carbon-carbon double bond at an end of a polymer side chain, said group Y 1 is represented by the formula: O d C═O) e —Y 2 wherein Y 2 is an alkenyl group or fluorine-containing alkenyl group having 2 to 5 carbon atoms and having an ethylenic carbon-carbon double bond at an end thereof; d and e are the same or different and each is 0 or 1.