Abstract: A system and method for protection switching in a transmission network is described. A protection switching mechanism comprises a multiplexer, a transmission path for each output of the multiplexer and a remote circuit. The multiplexer has an input coupled to receive an input signal and a plurality of outputs to output a plurality of output signals. Each transmission path is coupled to receive an associated output signal from the multiplexer. The transmission paths further include one or more redundant transmission paths, wherein signals directed to a faulty transmission path are redirected to an associated redundant transmission path. The remote circuit is used to selectively switch a redundant transmission path for a faulty transmission path at a subscriber.

Abstract: A system and method for protection switching in a transmission network is described. A protection switching mechanism comprises a multiplexer, a transmission path for each output of the multiplexer and a remote circuit. The multiplexer has an input coupled to receive an input signal and a plurality of outputs to output a plurality of output signals. Each transmission path is coupled to receive an associated output signal from the multiplexer. The transmission paths further include one or more redundant transmission paths, wherein signals directed to a faulty transmission path are redirected to an associated redundant transmission path. The remote circuit is used to selectively switch a redundant transmission path for a faulty transmission path at a subscriber.

Abstract: The invention is a method for treating a worksurface of a workpiece to render it static dissipative under conditions of low relative humidity. Conditions are created that render the worksurface receptive to treatment with a electrostatic dissipative (ESD) agent. The receptive worksurface is contacted with an ESD agent. Finally, the conditions created to render the worksurface receptive are removed. One method for treating a worksurface of a workpiece to render it static dissipative under conditions of low relative humidity commences by contacting the worksurface with an aqueous bath comprising acid and poly(3,4-ethylene-dioxythiophene)-poly(styrenesulfonate). The worksurface is removed from the bath and excess bath is washed away from the worksurface. The worksurface finally is dried. The preferred acid is HCl. Another method involves heating the worksurface to render it receptive followed by treating with heated worksurface with the ESD agent and subjecting the treated worksurface to pressure.

Abstract: This invention is a primer for use on EPDM roofing membranes in conjunction with neoprene (polychloroprene) based contact adhesives which comprises an admixture of thermoplastic block copolymers, halogenated butyl rubber, aromatic hydrocarbon reinforcing resin and solvent.

Abstract: Internal mold release compositions suitable for use in preparing polyurethane and polyurea moldings comprise a tertiary amine compound, a metal salt of a carboxylic acid, amidocarboxylic acid, phosphorus-containing acid or boron-containing acid. The metal is from Group IA, IB, IIA, or IIB metal or aluminum, chromium, molybdenum, iron, cobalt, nickel, tin, lead, antimony or bismuth.

Abstract: Internal mold release compositions suitable for use in preparing polyurethane and polyurea moldings comprise a tertiary amine compound, a metal salt of a carboxylic acid, amidocarboxylic acid, phosphorus-containing acid or boron-containing acid. The metal is from Group IA, IB, IIA, or IIB metal or aluminum, chromium, molybdenum, iron, cobalt, nickel, tin, lead, antimony or bismuth.

Abstract: Liquid flame-retardants for polyurethane compositions are disclosed. The liquid flame-retardants contain a mixture of a bromohydrin of pentaerythritol, a polyhydric alcohol, and a sufficient amount of a flame-retardant organo-phosphorus compound to render the mixture a substantially solids-free liquid at 25.degree. C., one atmosphere pressure. Illustrative of these flame-retardants is a solution of 2,2-bis(bromomethyl)-1,3-propanediol, a cyclic phosphonate ester of the formula ##STR1## where x=0 or 1, and a poly(oxypropylene) adduct of glycerol having an average molecular weight of about 300.

Abstract: In an electrical device containing a dielectric fluid, the improvement comprising employing as the dielectric fluid a compound of the formula: ##STR1## where X is independently --Cl or --Br; Z is independently ##STR2## R and R' are independently (CH.sub.2).sub.n CH.sub.3 ; and n is an integer of 0 to 10.