Description  Claims  Drawing  Cited references 

US2931840A   [0004] 
EP0502605A   [0029] 
EP0773061A   [0029] 
EP957074A   [0029] 
WO9810862A   [0029] 
WO2006106353A   [0029] 

Journal Fluorine Chemistry   [0003] 
Bulletin of The Academy of Sciences USSR, Division of Chemical Sciences   [0005]