Moisture stable polyurethane biasable transfer members

Details Moisture stable polyurethane biasable transfer members Moisture stable polyurethane biasable transfer members

1991-11-26

1993-05-18

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430126, 355274, G03G 1316

Patent

active

052120325

ABSTRACT:
The invention provides rolls, belts and other biasable members having at least one layer or coating of an elastomeric resilient polyurethane formed by reacting (a) a polyisocyanate prepolymer comprising the reaction product of a saturated aliphatic polyisocyanate, a saturated cycloaliphatic polyisocyanate, or an aromatic polyisocyanate and a polyol free of aliphatic unsaturation, preferably a polyalkylene glycol in which the alkylene group contains 2 to 8 carbon atoms, and (b) a hardening mixture comprising a polyol of (a) or a diamine free of aliphatic unsaturation, or a mixture thereof and, as a conductivity control agent, from 0.001 to 5.0 weight percent, based on the total weight of (b), of a complex of ethylene glycil or an oligoethylene glycol selected from the group consisting of di-, tri- and tetraethylene glycol with an ionizable ferric halide salt selected from the group consisting of ferric flouride, ferric chloride and ferric bromide.

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