Fluorinated imidoylamidines vulcanizing agents

摘要

The invention provides a compound and tautomeric forms thereof having the formula: wherein R_f¹ is selected from the group consisting of hydrogen, a straight chain, branched secondary or branched tertiary C₁-C₂₀ perfluoroalkyl group optionally containing ether or thioether linkages and C₁-C₁₀ perfluoroalicyclic group optionally containing ether or thioether groups; R_f² is a straight or branched C₁-C₂₀ perfluoroalkylene group optionally substituted with ether and thiother linkages; and X is selected from the group consisting of fluorine and The invention also provides perfluoroelastomeric compositions cured with the perfluoroimidoylamidines of the invention as well as combinations of perfluoroimidoylamidines and other curing agents.