Modified fluorocarbonylimino biurets

Claim 1

A fluorocarbonylimino biuret of the formula: ##STR16## wherein Z is a tris-(carbonylimino)biuret radical of the general formula ##STR17## in which R is an aliphatic or cycloaliphatic residue of 4 to 20 carbon atoms, optionally substituted with alkyl or alkoxy substituents; R f is a fully-fluorinated straight or branched aliphatic radical of 3 to 20 carbon atoms which can be interrupted by oxygen atoms; A is a divalent radical consisting of --SO 2 NR 3 13 , --CONR 3 , --S--, or --SO 2 --, wherein R 3 is H or alkyl or 1 to 6 carbon atoms; B is a divalent linear hydrocarbon radical --C n H 2n -- which can be end-capped by ##STR18## wherein n is 0 to 12, z is 1 to 50, and R 4 is H or lower alkyl; X is O, S or NR 5 , wherein R 5 is H or lower alkyl; R' is a monovalent fluorine-free alicyclic, aromatic or heterocyclic radical substituted with one or more of the following: --Cl, --Br, OR 6 , CO 2 R 6 , --Si(OR 6 ) 3 , --N.sup.⊕ (R 6 ) 3 or vicinal --OH/--Cl or --OH/--Br, wherein R 6 is alkyl 1 to 18 carbon atoms, R" is any substituted or unsubstituted fluorine containing fluorine-free aliphatic, alicyclic, aromatic or heterocyclic radical with a valency of at least 2 and not more than 100; m is zero or 1; p is 1 or 2; q is (3-p), i.e., either 2 or 1; r is 1 or 2; s is (2-r); and t is an integer of 2 to 100.