Browse Prior Art Database

TONER FINES AS AN ASPHALT CONCRETE ADDITIVE

IP.com Disclosure Number: IPCOM000026793D
Original Publication Date: 1993-Aug-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 68K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an asphalt concrete composition containing toner fines as a performance enhancing additive. Toner fines comprising, for example, a carbon block pigment and polymeric resins, are obtained as a by product in the manufacture of toner materials in the printing industry. Known asphalt cement formulations may be supplemented with toner fines at concentration levels of from about 0.1 to about 40 weight percent using dry blending or liquid suspension media for uniformly dispersing the toner fines into the asphalt formulation. The asphalt concrete composition containing toner fines was found to exhibit improved wear and crack resistance in field tests. The toner fines additive is believed to impart improved color and color retention properties to the asphalt composition. The toner fines asphalt concrete composition also exhibits increased elasticity which enables asphalt surfaces to contract and expand without cracking and possibly possess a self-healing or crack closure mechanism when thermally cycled. Toner fines in asphalt provides a useful alternative application to landfill disposal of toner fines.

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XEROX DISCLOSURE JOURNAL

TONER FINES AS AN ASPHALT CONCRETE ADDITIVE William R. Seman
David A. Eck
Lian I. Njoo
Rosetta Williams
DeWayne L. Schneberger
Natalie K. Milam
Barbara L. Reynolds
John M. Walker, III

Linda G. Sullivan Daniel L. Mize Dennis E. Mathes

Proposed Classification US. C1.430/110
Int. C1. G03g 09/08

Disclosed is an asphalt concrete composition containing toner fines as a performance enhancing additive. Toner fines comprising, for example, a carbon block pigment and polymeric resins, are obtained as a by product in the manufacture of toner materials in the printing industry. Known asphalt cement formulations may be supplemented with toner fines at concentration levels of from about 0.1 to about 40 weight percent using dry blending or liquid suspension media for uniformly dispersing the toner fines into the asphalt formulation. The asphalt concrete composition containing toner fines was found to exhibit improved wear and crack resistance in field tests. The toner fines additive is believed to impart improved color and color retention properties to the asphalt composition. The toner fines asphalt concrete composition also exhibits increased elasticity which enables asphalt surfaces to contract and expand without cracking and possibly possess a self-healing or crack closure mechanism when thermally cycled. Toner fines in asphalt provides a useful alternative application to landfill disposal of toner fines.

References

A related application of toner sc...