Patent ID: 8524898

Claim:
A coupling agent having a formula selected from the group consisting of: wherein: A is an inorganic anion; L is a leaving group selected from the group consisting of a benzotriazole, a benzotriazinone, a succinimide, a ketoxime, a pyridin-2(1H)-one-1-oxy, a quinazolin-4(3H)-one-3-oxy, a 1H-benzo[d]imidazol-1-oxy, an imidazole, an indolinone-1-oxy, pentafluorophenol, pentafluorothiophenol, 2-nitrophenol and 2-nitrobenzenethiol; n is an integer from 1 to 4, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each independently an alkyl having 1-4 carbon atoms, or one of R 1 and R 2 , and/or R 3 and R 4 , and/or R 5 and R 6 are independently joined to form a heteroalicyclic moiety selected from the group consisting of pyrrolidine, piperidine, morpholine, a thiomorpholine, a imidazolidine, an azaphosphinane, an azaphospholidine, an azaborinane, an azaborolidine, and a piperazine, provided that one of R 1 and R 2 , and/or R 3 and R 4 , and/or R 5 and R 6 are joined to form said heteroalicyclic moiety.