Abstract: A quasi-prepolymer-type urethane foam for a reaction injection molding (RIM) system comprises, for the polyol side, a blend of a long-chain polyol with a short-chain diol and/or triol and an organometallic catalyst and, for the prepolymer side, a unique high--27 to 31% --free NCO quasi-prepolymer made by reacting an essentially pure MDI with a selected low molecular weight (240 to 1500) polyol having a functionality of about 2.7 to 3.3. The selected low molecular weight polyol is specifically a polyether polyol (i.e. a polyoxpropylene and/or ethylene polyol) initiated with TMP, hexanetriol, glycerine or other suitable polyol. The quasi-prepolymer, while having the expected high reactivity, surprisingly gives good rapid cures in less than 2 minutes. The resulting urethane foam is characterized by its excellent low temperature properties, especially -20% F cold flexibility and -20% F dart impact. The quasi-prepolymer storage stability can be greatly improved by the inclusion of a small amount of a liquid MDI.

Abstract: A highly reactive urethane foam for RIM to produce thin-sectioned automobile trim components having good high temperature sag performance is a quasi prepolymer system in which the polyol side is based on a relatively high molecular weight polyol combined with a known highly reactive unhindered aromatic polyamine chain extender/cross linker and with conventional short chain diols/triol extenders/cross linkers and catalysts.

Abstract: A headlamp cleaning device comprising an elongated horn-like member having an open entrance at one end thereof, a flexible tube anchored within the cage member at a point spaced from the open entrance, the tube including a freely movable portion extending toward the entrance; and means for supplying a high velocity mixture of air and liquid to the tube whereby the tube directs a stream of the mixture toward the headlamp while simultaneously moving in an irregular path within the confines of the open entrance to continuously change the direction of the stream and clean a large area of the headlamp.

Abstract: A headlamp cleaning assembly of the type for cleaning vehicle headlamps and including first and second nozzles for jetting an air/liquid mixture against a headlight surface. A regulator means is included for mixing air and liquid and for sequentially supplying the resultant air/liquid mixture to the first nozzle for a first period of time and then to the second nozzle for a second period of time to complete one cycle. The regulator includes a piston slidably disposed in a cavity to define an air/liquid mixing chamber which is opposed by a liquid charging chamber. The piston also defines an air actuation chamber which, when supplied air, moves the piston from a start position to a charged position to charge by filling the charging chamber with liquid. A stem is connected to and extends upwardly from the piston and is slidably disposed in a stem chamber for actuating an air valve which, in turn, allows pressurized air to flow into the stem chamber.

Abstract: An assembly for directing a fluid, such as a combination of air and a liquid, toward a vehicle headlamp for cleaning the headlamp surface. A box-like support member is adapted at a first end to be connected to a vehicle body adjacent a headlamp and extends to a distal end to be positioned forwardly of the headlamp. The distal end of the box member includes a front wall with an aperture therein to define retaining flanges. An elbow member having a fluid inlet is disposed within the box member and has support flanges which overlap and engage the retaining flanges of the box-like member. A supply tube is connected to the inlet of the elbow and a coil spring is disposed about the supply tube and engaging the elbow member urging the elbow member forwardly. The elbow member has an outlet which extends upwardly and rearwardly from the inlet and a flailing flexible tube is connected to the outlet and has a loop integral therewith extending about the bottom of the elbow member for retaining the flailing tube thereon.

Abstract: A relatively inexpensive injection molding-grade thermoplastic polyurethane is based on a modified polyether diol. This elastomer has improved toughness, abrasion resistance and good mechanical properties. Its temperature insensitivity and low temperature flexability are exceptional. It is flexible to impact at -50.degree.F and stiff enough at 250.degree.F to allow painting without distortion. Of special interest is the fact that this grafted PPG-based polymer is injection moldable and possesses properties adequate for exterior automobile trim components and the like.The modified polyether polyol is a poly (oxypropylene) diol reacted with a 50/50 styrene/acrylonitrile monomer mixture using a free radical catalyst. While a one shot method of preparation can be used, the capped polyol is preferably reacted with an aromatic diisocyanate to form a prepolymer in a known manner. The prepolymer is thereafter reacted with a C.sub.2 to C.sub.

Abstract: A relatively inexpensive injection molding-grade thermoplastic polyurethane is based on a modified polyether diol. This elastomer has the inherent toughness, abrasion resistance and general good mechanical properties of the ether-based urethanes. Its temperature insensitivity and low temperature flexability are, however, exceptional. It is flexible to impact at -50.degree.F and stiff enough at 250.degree.F to allow painting without distortion.The modified polyether polyol is a poly (oxypropylene) diol reacted with a 50/50 styrene/acrylonitrile monomer mixture using a free radical catalyst. This grafted polyol is preferably blended with a minor amount of a poly alkene ether diol and reacted with an aromatic diisocyanate to form a prepolymer in a known manner. The prepolymer is thereafter reacted with a C.sub.2 to C.sub.6 alkane diol, pan cast, cured and aged, followed by grinding to one-fourth and three-eighth inch granules to give the molding composition.