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CHARGE GENERATOR LAYERS CONTAINING SELENIUM DISPERSED IN PHENOXY

IP.com Disclosure Number: IPCOM000026107D
Original Publication Date: 1990-Apr-30
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 75K

Publishing Venue

Xerox Disclosure Journal

Abstract

Multilayered photoreceptors contain a charge generator layer and a charge transport layer. Charge generator layer coating formulations composed of selenium dispersions in solutions of neutral and/or acidic polymers give off noxious odors that are especially unpleasant when the coatings are dried at elevated temperatures. One of the polymer solvent systems that emits some of the most noxious odors when used to mill elemental selenium into dispersions is phenoxy dissolved in blends of acetone and cyclohexanone. The odors given off are similar to those for sulfur compounds.

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XEROX DISCLOSURE JOURNAL

CHARGE GENERATOR LAYERS Proposed Classification CONTAINING SELENIUM U.S. C1.430/135 DISPERSED IN PHENOXY
Int. Robert A. McNamara C1. G03g 5/00

Multilayered photoreceptors contain a charge generator layer and a charge transport layer. Charge generator layer coating formulations composed of selenium dispersions in solutions of neutral and/or acidic polymers give off noxious odors that are especially unpleasant when the coatings are dried at elevated temperatures. One of the polymer solvent systems that emits some of the most noxious odors when used to mill elemental selenium into dispersions is phenoxy dissolved in blends of acetone and cyclohexanone. The odors given off are similar to those for sulfur compounds.

A process has now been discovered which provides a means by which toxic, odoriferous, selenium compound(s) are prevented from forming by the catalytic action of alkaline polymers on the surface of selenium particles and /or on the conversion of innocuous selenium compounds into noxious selenium compounds. The alkaline polymers have an alkylated pyrrolidone backbone, such as the Ganex series from GAF Corp. These polymers having an alkylated pyrrolidone backbone can be considered as organic bases. The alkaline polymers are soluble in organic solvents used to dissolve phenoxy resin and are therefore available to catalytically prevent the formation of noxious selenium compounds. Pyrrolidone containing polymers are also available as hom...