Abstract: Radiation curable compositions for coatings, adhesives, inks, and molded articles are disclosed.

Abstract: Composition containing charge transfer complex from at least one unsaturated compound having an electron donor group and having an electron withdrawing group and being free of any photoinitiating compound is polymerized by being subjected to ultraviolet light.

Abstract: A feedback apparatus used in combination with a programmable machine controller for a multi-spindle screw machine wherein each spindle has a corresponding machine tool mounted on a moveable servo slide. The feedback apparatus includes at least one measurement device that produces an electrical output indicative of a dimensional characteristic of each work piece. The measurement device data is inputted to a data analyzer that calculates average values and range for a predetermined subgroup number of work pieces. The analyzer provides this data electronically to a programmable offset device that determines new offset values for the machine tool slides to maintain the subgroup average values and range within predetermined limits. The feedback apparatus provides "on the fly" offset updates to the machine controller to compensate for average machine process performance as well as individual machine tool and spindle performance.

Abstract: A method and apparatus for the ultraviolet curing of pigmented coatings having a thickness from about 1 mm to about 10 mm at a high curing rate and a relatively low energy consumption per unit area of coating cured. A coated substrate is irradiated by a first high UV source having a spectral energy distribution of the discharge which is high in the range from about 350 nm to about 450 nm and by a second UV source having a spectral energy distribution of the discharge which is high in discrete regions through the range of about 200 nm to about 450 nm. Each UV source is powered by at least about 300 watts per inch of width of the coating.