Patent ID: 7959783
Filing Date: 2011-06-14
Classification: C25D

Abstract:
1. A process for forming a resin-fiber composite, comprising the steps of providing an aqueous solution comprising polyphosphinohydrazide as an ionizable moiety; disposing an electrically conductive fibrous substrate within the aqueous solution, wherein the fibrous substrate serves as an anode; contacting a second conductive body with the aqueous solution, wherein the second conductive body serves as a cathode; applying an electric potential between the anode and the cathode; ionizing the polyphosphinohydrazide in the aqueous solution; covalently bonding the polyphosphinohydrazide to the fibrous substrate to form a composite fiber; maintaining the electrodeposition conditions until at least one additional layer of the ionizable moieties are deposited on top of the resin matrix; and impregnating the composite fiber with polyamic acid.