| abstract |
A composition of matter is disclosed that comprises a compound of the formula AnR, wherein: A is (I), R1 is hydrocarbyl; m is 0 or 1; n is 1, 2 or 3; R is selected from the group consisting of: mono-, di-, and trivalent groups; mono-, di-, and trivalent aromatic groups; five- and six-membered heterocyclic rings comprising a carbon atoms bonded to A, at least one nitrogen atom, and, optionally, at least one sulfur atom; and (II), wherein R2 and R3 are independently selected from the group consisting of hydrogen and hydrocarbyl. These compounds are useful as coupling agents in filled elastomer compositions. |