Patent ID: 8236902

Claim:
A fluorine containing polymer blend, comprising: at least two constituent polymers each functionalized with at least one R F functionality, wherein the R F functionality is selected from the group consisting of —(CF 2 ) n CF 2 H, —CO(CF 2 ) n CF 2 H, —(CF 2 ) n CF 3 , —CO(CF 2 ) n CF 3 , —S(CF 2 ) n CF 3 , —S—CO(CF 2 ) n CF 3 , —S—(CF 2 ) n CF 2 H and —S—CO(CF 2 ) n CF 2 H, wherein 4≦n≦20, and wherein a spacer group, S, comprises one or more methylenes, wherein at least one constituent polymer is incompatible with at least one other constituent polymer before being functionalized with R F and wherein the constituent polymers are held together in the polymer blend via fluorophilic interactions between the added R F functionalities.