The organic metal ester coupling agent (titanate, zirconate and aluminate) is composed of tetravalent (titanium, zirconium) or trivalent (aluminum) metal as the central atom, and has the inorganic reaction in the same compound molecular structure (Organic bridging agent) and organic reactive group. Although they are
the same as the silane coupling agent in the same molecular structure are connected with four reactive groups (except aluminate, aluminum is a trivalent metal, so aluminate structure only three reactive groups), but the organic metal The three functional groups (two in aluminum) of the esterbased coupling agent
are the organic reactive group Y and the silane coupling agent has only one Y group.