Browse Prior Art Database

TONER COMPOSITIONS WITH SULFONE CHARGE ENHANCING ADDITIVES

IP.com Disclosure Number: IPCOM000026629D
Original Publication Date: 1992-Dec-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 99K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a negatively charged toner composition comprised of resin particles, colorants, optional surface additives, and a dihydroxyaryl sulfone charge enhancing additive, or an unsymmetrical hydroxyaryl sulfone charge enhancing additive obtained from the condensation of sulfuric acid with a molar equivalent of a phenol, followed by condensation with a second phenol, or from the condensation of an aromatic sulfonic acid with a phenol.

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XEROX DISCLOSURE JOURNAL

TONER COMPOSITIONS WITH Proposed Classification SULFONE CHARGE ENHANCING US. C1.430/106 ADDITIVES Int. C1. G03g 09/08 Beng S. Ong

XEROX DISCLOSURE JOURNAL Vol. 17 No 6 NovembedDecember 1992 495

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TONER COMPOSITIONS WITH SULFONE CHARGE ENHANCING ADDITIVES (Cont'd)

Disclosed is a negatively charged toner composition comprised of resin particles, colorants, optional surface additives, and a dihydroxyaryl sulfone charge enhancing additive, or an unsymmetrical hydroxyaryl sulfone charge enhancing additive obtained from the condensation of sulfuric acid with a molar equivalent of a phenol, followed by condensation with a second phenol, or from the condensation of an aromatic sulfonic acid with a phenol.

The present disclosure is specifically directed to toner compositions comprised of polymer resins or toner resin particles, pigment, or dye, and a hydroxyaryl sulfone negative charge enhancing additive of the formula shown in the figure wherein A and B are substituents independently selected, for example, from the group consisting of hydrogen atom, an alkyl group, alkoxy group, carboxy group, nitro group, halogen atom, and the like; X and Y are substituents independently selected, for example, from the group consisting of hydrogen atom, hydroxy, alkyl group, alkoxy group, carboxy group, nitro group, halogen atom, and the like; and y is the number 0 or 1. Except primarily for bis(dihydroxyary1) sulfones, the sulfone charge...