LIQUID ETHYLENE PROPYLENE DIENE TERPOLYMERS FOR XEROGRAPHIC COMPONENTRY
Original Publication Date: 1997-Dec-31
Included in the Prior Art Database: 2004-Apr-08
Xerox Disclosure Journal
Disclosed is use of liquid Ethylene Propylene Diene Terpolymers (EPDM) in formulating xerographic componentry, for example, Bias Transfer Rolls (BTR), cleaning and metering blades, and paper feeder and document handling belts. EPDM is known to those skilled in the art as a terpolymer elastomer prepared from ethylene, propylene, and minor amounts of nonconjugated diene monomer. EPDM contains pendant unsaturated bonds which can be readily and selectively crosslinked or vulcanized to impart desired properties, such as, resistance to ozone, ultraviolet light, relative humidity, temperature, and the like environmental factors. EPDM, can be used alone or in combination with other materials in formulating xerographic componentry, such as, polyurethanes, natural rubbers, styrene-butadiene elastomers, and the like compatible materials. Liquid or gum stock EPDM provides numerous other formulating advantages, for example, performance additives, such as charge control additives, conductive fiUers, and ionic additives, can readily be incorporated into a component by simple mixing with EPDM prior to coating or crosslinking the mixture.