Abstract: An electrographic toner composition comprises a polyester resin that is the condensation product of from about 30 to about 100 mole percent 2,2-dimethyl-1,3-propanediol, from 0 to about 70 mole percent 2,2'-oxydiethanol and terephthalic acid or any ester forming derivative thereof, the polyester resin having an inherent viscosity of at least about 0.30.

Abstract: A procedure for the treatment of roots of seedlings whereby the roots are provided a water-rich coating, having a surface sufficiently dry and moisture-stable to permit the seedlings to remain discrete and to preserve the integrity of the coating during ordinary handling and planting operation, but sufficiently moisture-sensitive so that soon after planting, the coating disintegrates and releases the pesticide, thus providing the plant protection against pests over an extended period of time. The method is applicable with insecticides, nematicides and fungicides, whether these pesticides are systemic or non-systemic.

Abstract: Hammer apparatus is provided for impacting an eyeglass lens to test the frangibility of the lens. A hammer arm is pivotally mounted on a base plate for rotation between a vertical position and a horizontal position. A steel ball is connected to the end of the hammer arm to impact the lens. A weight is positioned precisely on the hammer arm to provide the exact amount of impact force required by FDA regulations. A cylindrical pedestal is mounted to the base plate to support the lens horizontally so that the ball strikes substantially in the center of the lens when the hammer arm falls to the horizontal position. A catch member holds the hammer arm in the vertical position and, upon manual actuation, the catch member releases the hammer arm to fall to impact the lens. A removable metal box encloses the pedestal for catching broken glass. The top of the box includes an aperture for the ball to enter as the arm falls to impact the lens.

Abstract: A repellent composition containing an oil of low volatility having a surface energy less than 27 dynes/cm. and a solid fluorinated polymer such as a polymer of a fluoroalkyl acrylate. In accord with certain embodiments of the invention, a resinous binder and/or a particulate fluorocarbon powder may be added to the repellent composition. The repellent composition may be used to prepare an ink repellent surface for a "waterless" lithoplate or as a coating on the surface of an electrographic element from which a liquid developed electrographic image is transferred.