Search Results

The field of polyurethane chemistry as it applies to paint technology is reviewed. The types of polyisocyanates, reactive resins, and modifying materials commonly used in formulating industrial urethane coatings and the relationships these compounds have to formulating, compositional performance and film properties and performance is discussed. Application techniques, storing and handling considerations, and the toxicity of raw materials used in industrial coatings are also discussed. End use applications of urethane coatings in a spectrum of markets and present usage on integral skin polyurethane and polycarbonate parts which are used in present automotive application are described.

Possible methods for the advance detection and warning of clear air turbulence by airborne devices are surveyed briefly. These include: active use of radar, microwaves, infrared and visible portions of the electromagnetic spectrum; passive use of infrared, millimeter waves and visible light; air temperature probes; electric field measurements; electric charging of aircraft; ozone detection; and microbaro-metric measurements. The state of the art of CAT detection and warning is still exploratory. No method has yet been demonstrated to give advance warning of CAT with a confidence level sufficient to justify operational use, and too little is known about the physical parameters of CAT to enable any one method of detection and warning to be singled out as the most promising. More basic research on the physics and meteorology of CAT itself is needed.