Abstract: A notification system for an air conditioning system includes a power source, first and second connectors, first and second switches, and a notification device. The power source has first and second power terminals. The first and second connectors are connected to a continuity sensor. The first switching device is configured to connect the first power terminal to a first output responsive to an interruption of current from the first connector to the second connector. The second switching device has a second output coupled to the first output, and is configured to connect the first power terminal to the second output responsive to current on the second output. The notification device is coupled to the first and second outputs, and is configured to generate an audible and/or visible notification responsive to power received from the outputs.

Abstract: A notification system for an air conditioning system includes a power source, first and second connectors, first and second switches, and a notification device. The power source has first and second power terminals. The first and second connectors are connected to a continuity sensor. The first switching device is configured to connect the first power terminal to a first output responsive to an interruption of current from the first connector to the second connector. The second switching device has a second output coupled to the first output, and is configured to connect the first power terminal to the second output responsive to current on the second output. The notification device is coupled to the first and second outputs, and is configured to generate an audible and/or visible notification responsive to power received from the outputs.

Abstract: A purified polyurethane crosslinking agent and a magnetic recording medium comprising a substrate having coated thereon a front coat and a backcoat, said front coat comprising at least a magnetic coating and at least one of said front coat or said backcoat containing at least polymeric binder with pendant hydroxyl groups and a purified polyisocyanate crosslinking agent therefor comprising at least one diisocyanate compound adduct selected from the group consisting of adducts having a formula wherein: each A moiety is independently a divalent, organic linking group; and X is a divalent organic linking group, and a diisocyanate compound adduct of the formula wherein each A moiety is as defined above, and Y is a trivalent organic linking group.

Abstract: A magnetic recording medium comprising a non-magnetic substrate having a front side and a backside having a magnetic layer formed over the front side of the substrate, wherein the magnetic layer includes magnetic pigment particles, and a binder system therefor; the substrate also has a coating layer formed over the backside of the substrate wherein it is formed from a dispersion substantially free of tetrahydrofuran. In one embodiment, the backside coating formulation further comprises a crosslinking agent including a tetramethylol propane adduct and a 1,3-butanediol adduct in a solution of methylethylketone.

Abstract: A dual-layer magnetic recording medium comprising a non-magnetic substrate having a front side and a back side, the front side having at least one lower support layer formed over the substrate and at least one magnetic upper layer formed over the at least one support layer, wherein the magnetic upper layer includes magnetic pigment particles having an average particle length of less than about 75 nanometers, and a binder system for the magnetic particles, and the lower support layer includes at least one non-magnetic pigment and a binder system therefor, said binder system having a lower Tg from said binder system for said upper layer, said magnetic recording medium having two edges, said magnetic recording medium exhibiting substantially less cracking on said edges when compared to a dual-layer magnetic recording medium comprising a magnetic upper layer and a lower support layer having substantially identical binder systems.