Abstract: An additive pack which comprises a water-soluble capsule containing a water-dispersible polymer powder (dispersion powder) is used to prepare aqueous construction materials such as cements and mortars on site, while offering set properties equivalent or superior to ready to mix dry mix formulations.

Abstract: The invention relates to the use of polymer powder compositions that can be redispersed in water and have cationic functionality, as flocculation aid, for example for dewatering waters or waste waters that are laden with solids.

Abstract: An additive pack which comprises a water-soluble capsule containing a water-dispersible polymer powder (dispersion powder) is used to prepare aqueous construction materials such as cements and mortars on site, while offering set properties equivalent or superior to ready to mix dry mix formulations.

Abstract: The invention relates to the use of polymer powder compositions that can be redispersed in water and have cationic functionality, as flocculation aid, for example for dewatering waters or waste waters that are laden with solids.

Abstract: A flexible container for the storage of liquid, where a liquid medium to some extent or completely surrounds the flexible container, characterized in that the base of the flexible container proceeds in the manner of a cone to a discharge point at which liquid can be discharged from the flexible container.

Abstract: The invention relates to the use of a flexible container for the storage of liquid, where a liquid medium to some extent or completely surrounds the flexible container, characterized in that the base of the flexible container proceeds in the manner of a cone to a point at which liquid can be discharged from the flexible container (discharge point).

Abstract: A construction element obtained by fastening a reinforcement to an insulating panel, using an adhesive containing one or more mineral binders and/or one or more polymeric binders, and optionally one or more fillers, optionally one or more adjuvants and optionally one or more additives, the reinforcement being embedded partially but not completely in the adhesive.

Abstract: The invention relates to a method for the production of protective colloid-stabilized polymer products by means of emulsion polymerization in a reactor having an external cooling circuit, which is equipped with a pump and a heat exchanger, characterized in that the reaction mixture present in the reactor is delivered to a cooled static mixer-heat exchanger having stationary fixtures and is subsequently returned to the reactor. The invention further relates to a device for the production of protective colloid-stabilized polymer products by means of emulsion polymerization, comprising a reactor and an external cooling circuit, characterized in that the external cooling circuit is equipped with a pump and a cooled static mixer-heat exchanger having stationary fixtures.

Abstract: The invention relates to a method for the production of protective colloid-stabilized polymer products by means of emulsion polymerization in a reactor having an external cooling circuit, which is equipped with a pump and a heat exchanger, characterized in that the reaction mixture present in the reactor is delivered to a cooled static mixer-heat exchanger having stationary fixtures and is subsequently returned to the reactor. The invention further relates to a device for the production of protective colloid-stabilized polymer products by means of emulsion polymerization, comprising a reactor and an external cooling circuit, characterized in that the external cooling circuit is equipped with a pump and a cooled static mixer-heat exchanger having stationary fixtures.

Abstract: In a process for the preparation of copolymers containing vinyl esters and ethylene or ethylenically unsaturated monomers by aqueous, free radical polymerization at a pressure of from 5 to 100 bar absolute by the emulsion or suspension polymerization method, after the end of the polymerization, the reaction mixture is let down to a pressure of from 0.1 to 5 bar absolute and recovery of unconverted monomers is effected by multistage fractional low-temperature condensation from the residual gas.

Abstract: In a process for the preparation of copolymers containing vinyl esters and ethylene or ethylenically unsaturated monomers by aqueous, free radical polymerization at a pressure of from 5 to 100 bar absolute by the emulsion or suspension polymerization method, after the end of the polymerization, the reaction mixture is let down to a pressure of from 0.1 to 5 bar absolute and recovery of unconverted monomers is effected by multistage fractional low-temperature condensation from the residual gas.

Abstract: The invention relates to a process for the stabilization of dusting surfaces characterized in that the dusty ground is tilled or scarified and mixed with polymers in form of water-redispersible polymer powders, which are optionally reemulsifiably modified, or reemulsifiable modified aqueous polymer dispersions, which are optionally sprayed on to the untreated dusty ground. In a preferred embodiment the redispersible polymer powder, respectively the reemulsifiable modified redispersible polymer powder or the reemulsifiable modified aqueous polymer dispersion, is combined with hydraulically setting compounds, preferably cement and/or gypsum.

Abstract: The invention relates to a process for the stabilization of dusting surfaces characterized in that the dusty ground is tilled or scarified and mixed with polymers in form of water-redispersible polymer powders, which are optionally reemulsifiably modified, or reemulsifiable modified aqueous polymer dispersions, which are optionally sprayed on to the untreated dusty ground. In a preferred embodiment the redispersible polymer powder, respectively the reemulsifiable modified redispersible polymer powder or the reemulsifiable modified aqueous polymer dispersion, is combined with hydraulically setting compounds, preferably cement and/or gypsum.

Abstract: The invention relates to a process for the stabilization of dusting surfaces characterized in that the dusty ground is tilled or scarified and mixed with polymers in form of water-redispersible polymer powders, which are optionally re-emulsifiably modified, or reemulsifiable modified aqueous polymer dispersions, which are optionally sprayed on to the untreated dusty ground. In a preferred embodiment the redispersible polymer powder, respectively the reemulsifiable modified redispersible polymer powder or the reemulsifiable modified aqueous polymer dispersion, is combined with hydraulically setting compounds, preferably cement and/or gypsum.

Abstract: In a magnetic resonance tomograph having a continuous channel for inserting from one end a stretcher with a female patient lying thereon in a prone position during magnetic resonance mammography, the tomograph is provided with a manipulator by which instruments for the diagnosis and surgical treatment of such patients breasts can be introduced into the channel from the other end and positioned in relation to the breasts which are disposed in the isocenter of the magnetic resonance tomograph. The manipulator has a support arm with a recess for receiving the various instruments which can be installed and exchanged from the other, that is, the proximal end. The support arm with the recess can be pivoted horizontally and vertically about a fixed point located outside the recess and beyond the tip at the distal end of the manipulator adjacent to a breast of the patient.

Abstract: In a stair-climbing vehicle for negotiating steps, ledges and stairs comprising a vehicle body having wheel support arms mounted thereon at opposite sides and in spaced relationship so as to be pivotable about a wheel support arm shaft and wheels rotatably mounted on the free ends of the wheel support arms, climbing arms are supported on the vehicle pivotable about the pivot axes of the support arms. The climbing arms are linearly extendable for moving the wheels from one step to the next, one wheel, one wheel support arm and one climbing arm forming together a stair climbing module.

Abstract: In an apparatus for guiding a medical probe into body cavities, a handle housing is provided consisting of inner, upper and lower modules. The inner module comprises a rinsing liquid supply and suctioning hose assembly, which can be removed and discarded after use. The lower housing part includes probe support and guide structures and the upper housing part includes operating slide members engaging the hoses of the hose assembly for controlling the flow through the hoses. It also includes means extending through the inner module and engaging the probe support in the lower module for axially moving the probe support and the probe retained therein. A two-lumina shaft extends from the apparatus in alignment with the probe and receives the probe, and flow communication structures are provided for interconnecting the two hoses with the lumina in the shaft.

Abstract: A wood glue powder which is easily dispersible in water is provided having improved bond strength, thermal stability and rapid setting properties and is prepared by mixing aqueous dispersions, prepared by emulsion polymerization technique of:a) from 70 to 90% by weight of one or more vinyl ester homopolymers or vinyl ester copolymers of vinyl esters of unbranched or branched alkylcarboxylic acids having 1 to 18 carbon atoms, withb) from 10 to 30% by weight of one or more fully hydrolyzed vinyl alcohol homopolymers or vinyl alcohol copolymers having a degree of hydrolysis of from 96 to 100 mol % and a Hoppler viscosity of from 2 to 15 mPa.s, measured in 4% strength aqueous solution, based in each case on the overall weight of the polymeric constituents a) and b), and if desired, with further additives and then spray drying the mixture.

Abstract: The invention relates to a method for the automatic control of batch processes by means of a process control in which the automatic control programs access individual control modules, wherein a) the control instructions and parameter definitions contained in the partial formulations or phases of the formulation program are stored in a separate program level for the activation, interlocking and switch-on blocking of actuators in the field, b) in the separate program level, the control instructions and parameter definitions for each actuator to be activated are collected actuator by actuator and, if appropriate, logically combined, and c) the currently effective activations, interlockings and switch-on blockings are output, actuator by actuator, to the process operating and monitoring system.

Abstract: A process is provided for the production of a graft copolymer by means of emulsion polymerization. The graft base used is a sulfonate group-containing vinyl ester/ethylene latex which is stabilized exclusively by an anionic emulsifier (CMC.gtoreq.0.5% by weight in H.sub.2 O) and is grafted, preferably with vinyl chloride, without further addition of emulsifier or protective colloid. The graft copolymers according to the invention have good water resistance and very good thermoplastic processability. They are useful as impact modifiers and for the production of articles, such as, soft to semi-hard moldings.