Abstract: An anti-car-theft system incorporating solenoid locking devices and relays for disabling or locking a plurality of critical components of an automobile (such as the ignition, the steering, the brakes, the transmission and the hood), unless and until the system is deactivated by the entry of a security code into a control unit. To deactivate the system in a preferred embodiment, the owner first unlocks the driver's door by means of a keyless remote entry device. Once inside the automobile, the owner enters his or her security code into a keypad on the control unit, which is located inside the automobile. Upon proper entry of the security code, the system enables the car components previously disabled by the relays.

Abstract: Poly(vinylbenzyl ethers) of polyphenols are prepared by reacting an alkali metal, alkaline earth metal, or ammonium salt of a polyphenol with a vinylbenzyl halide in a liquid reaction medium consisting essentially or a monohydric alcohol or glycol having less than 12 carbons, a polyglycol having a weight average molecular weight ranging from about 200 to about 4000, or glycerol.Halide ion content of poly(vinylbenzyl ethers) of polyphenols prepared by the method of this invention and other methods are reduced by dissolving the ether in a solvent that dissolves no more than about 1.0 weight percent of an alkali metal, alkaline earth metal, or ammonium halide; separating the ether solution from the halide salt; and then recovering the ether from the solution.