Abstract: A capacitive sensor includes a transmit electrode configured to provide an alternating electric field to a sensor; one or more receive electrodes for detecting variations in the alternating electric field; and an adaptive frequency adjustment unit configured to adjust an operating frequency of the alternating electric field responsive to detection of a noise measure, such as noise power.

Abstract: Compositions comprising at least one thermoplastic polymer as component A, at least one C2-C4-?-olefin-vinyl acetate copolymer having vinyl acetate content of >40% by weight as component B, at least one plastomer produced via metallocene catalysis and based on ethylene and on at least one C4-C8-olefin as component C, where component C differs from component A, at least one polyolefin homo- or copolymer modified with an unsaturated carboxylic acid or with a derivative thereof, as component D, at least one flame retardant as component E, and also optionally one or more further auxiliaries and additives, a process for producing the compositions of the invention, the use of the compositions of the invention as insulation materials or, respectively, sheathing materials for cables or lines, insulation materials or, respectively, sheathing materials for cables or lines, comprising the composition of the invention, and also cables or lines which comprise the composition of the invention.

Abstract: New hotmelt adhesives are provided that are based on specific ethylene-vinyl acetate copolymers, styrene block copolymers, and a tackifying resin. These hotmelt adhesives are outstandingly suitable for bonding substrates, more particularly for bonding films to substrates.

Abstract: The present invention is directed to a grafted ?-olefin-vinyl acetate copolymer containing crosslinkable silyl groups which is composed of one or more ?-olefin-vinyl acetate copolymers as component A, of which at least one, as component A1, has a vinyl acetate content of ?60% by weight, based on the total weight of the ?-olefin-vinyl acetate copolymer A1, and at least one unsaturated silane which contains at least one hydrolysable group and which is grafted on to the one or more ?-olefin-vinyl acetate copolymers, as component B. The invention if further directed to a processes and uses for the grafted ?-olefin-vinyl acetate copolymer.

Abstract: A grafted ?-olefin-vinyl acetate copolymer containing crosslinkable silyl groups which is composed of one or more ?-olefin-vinyl acetate copolymers as component A, of which at least one, as component A1, has a vinyl acetate content of ?60% by weight, based on the total weight of the ?-olefin-vinyl acetate copolymer A1, and at least one unsaturated silane which contains at least one hydrolysable group and which is grafted on to the one or more ?-olefin-vinyl acetate copolymers, as component B; and a process for the preparation of the grafted ?-olefin-vinyl acetate copolymer according to the invention, crosslinkable compositions containing the grafted ?-olefin-vinyl acetate copolymer according to the invention and at least one crosslinking catalyst, the use of the crosslinkable compositions according to the invention for the production of insulation or sheath materials for cables or lines, a process for crosslinking the compositions according to the invention by bringing the crosslinkable compositions into cont

Abstract: A system and method for controlling the flow of a cooling fluid through a fuel cell stack during cold system start-up. A pump pumps the cooling fluid through the stack. At cold start-up, the pump is selectively turned on and off in a pulsed manner based on the temperature, cooling fluid volume, stack output power and other factors so that a minimal amount of the cold cooling fluid is introduced into the stack. By selectively controlling the duty cycle and the frequency of the pump pulsing, the reaction temperature will heat the cooling fluid, but the influence of the cold cooling fluid on the stack output power will be minimized. In an alternate embodiment, an electric heater is positioned in the inlet manifold, so that the cooling fluid is heated in the inlet manifold during the times that the pump is off.

Abstract: A heat regulating system for an electrochemical conversion assembly. In one embodiment, the electrochemical conversion assembly is a fuel cell, and the device includes one or more fluid-manipulating components to vary the amount of a coolant or related heat regulating fluid used to maintain a preferred temperature in the fuel cell. Preferred fuel cell operating temperatures can be more easily achieved by selectively bypassing a portion of the coolant around the fuel cell during certain temperature or power demand regimes. A controller can be used to monitor and selectively vary the extent to which at least one of these components modifies the flow of fluid past the fuel cell.

Abstract: Systems of checking thermal-induced circulation of a coolant in a fuel cell stack are disclosed. The system includes coolant inlet and outlet lines extending from a fuel cell stack. A pump and a radiator are confluently connected to the coolant inlet and coolant outlet lines. In one embodiment, a valve (either check type or automatic type) is provided in the coolant outlet line at the bottom of the fuel cell stack to prevent the flow of cold coolant from the coolant outlet line into the fuel cell stack upon start-up of the fuel cell stack. In another embodiment, a valve (either one-way flow control type or automatic type) is provided in the coolant inlet line at the top of the fuel cell stack. A method of checking thermal-induced circulation of a coolant in a fuel cell stack is also disclosed.

Abstract: The invention relates to molded flexible polyamide materials containing polyamide and olefin/vinyl acetate copolymers, films and hollow elements comprising at least one layer of said molded materials, and methods for producing the molded materials, films, and hollow elements.

Abstract: The invention relates to mixtures containing a) a polymer which may be produced from ethylene, vinyl acetate and optionally further monomers having a vinyl acetate content in the range of 40 to 85 wt. %, b) at least one expandable graphite which may be acidic or neutralised, c) at least one mineral filler, d) optionally further additives, a process for producing them, their use for the production of shaped articles of any type, and flame-retardant intumescent mixtures containing a mixture according to the invention and, furthermore, shaped articles containing a mixture according to the invention.

Abstract: The invention relates to mixtures composed of ethylene-vinyl alcohol copolymers and of crosslinkable rubbers having reactive groups and their use for production of moulded items with good barrier properties. The inventive mixtures in particular feature the good barrier properties and high impact resistance particularly at low temperatures, with a resultant broad application profile for these mixtures.

Abstract: A reformer fuel feed stream in fuel cell power system is catalytically reacted into a reformate stream for a fuel cell stack by adjusting fuel supply throughput according to a predefined throughput ramp when a time derivative and the current demand for the fuel cell deviates from zero by more than an acceleration threshold value. The fuel cell power system is of special value when deployed on a vehicle where the load command is derived from the accelerator pedal of the vehicle.

Abstract: The present invention relates to a composition which comprises at least one triblock copolymer, one terpene resin, one liquid component and one ethylene-vinyl acetate copolymer, and also to a process for preparing this composition, and to its use.

Abstract: The present invention relates to vanadium-imido-phosphoraneiminato compounds, to compositions containing vanadium-imido-phosphoraneiminato compounds, which compositions are suitable especially as catalysts for the polymerization of olefins, especially for ethylene/propylene or ethylene/?-olefin copolymerization and the terpolymerization of those monomers with dienes.

Abstract: The present invention relates to a composition which comprises at least one triblock copolymer, one terpene resin, one liquid component and one ethylene-vinyl acetate copolymer, and also to a process for preparing this composition, and to its use.

Abstract: The invention relates to an adhesive based on highly saturated, carboxylated nitrile-butadiene rubber (HXNBR), to its use, to processes for its preparation, to its use for the bonding of substrates and to products manufactured therewith.

Abstract: The present invention relates to a composition which comprises at least one triblock copolymer, one terpene resin, one liquid component and one ethylene-vinyl acetate copolymer, and also to a process for preparing this composition, and to its use.

Abstract: The present invention relates to a single- or multilayer product containing &agr;-olefin-vinyl alcohol copolymers and at least one &agr;-olefin-vinyl acetate copolymer, wherein the amount of vinyl acetate repeat units present in the &agr;-olefin vinyl acetate copolymer is in the range from 35 to 99.99% by weight, and these repeat units have good flexibility which permits processing films or other thin-walled items which are transparent after stretching or thermoforming, and to a process for producing the same, and to their use as packaging films.

Abstract: The present invention relates to a composition which comprises at least one triblock copolymer, one terpene resin, one liquid component and one ethylene-vinyl acetate copolymer, and also to a process for preparing this composition, and to its use.

Abstract: The present invention relates to a single- or multilayer product containing &agr;-olefin-vinyl alcohol copolymers and at least one &agr;-olefin-vinyl acetate copolymer, wherein the amount of vinyl acetate repeat units present in the &agr;-olefin vinyl acetate copolymer is in the range from 35 to 99.99% by weight, and these repeat units have good flexibility which permits processing films or other thin-walled items which are transparent after stretching or thermoforming, and to a process for producing the same, and to their use as packaging films.