| abstract |
The present invention Fluorination unit of formula (I): (I) -CX 1 X 2 -CX 3 X 4- (In the formula, X 1 , X 2 , X 3 and X 4 are optionally partially or wholly fluorinated alkyl groups containing H, F and 1-3 carbon atoms, respectively. (Selected independently from), Fluorination unit of formula (II): (II) -CX 5 X 6 -CX 7 Z- (In the formula, X 5 , X 6 and X 7 are optionally independent of partially or wholly fluorinated alkyl groups containing H, F and 1-3 carbon atoms, respectively. In the formula, Y represents an oxygen atom or an NH group or a sulfur atom, Ar represents an aryl group, preferably a phenyl group, and R represents 1 to 1 to. It relates to a copolymer containing (which is a photoactive group) of a monoc or bidentate containing 30 carbon atoms). The present invention also relates to a method for preparing the copolymer, a composition containing the copolymer, and a film obtained from the copolymer. |