摘要:
The subject of the present invention is a process for preparing polyester alcohols by condensation of polytetrahydrofuran with aromatic dicarboxylic acids and/or their anhydrides in the presence of a transesterification catalyst in a multi-stage operation at different pressure levels with at least one reaction stage at atmospheric pressure and at least one reaction stage at reduced pressure, where distillate is removed from the reaction system, which process comprises heating the reaction mixture in two or more phases in the atmospheric-pressure reaction stage wherein the heating phases are interrupted by at least one phase in which the temperature is kept constant.
摘要:
A product may be provided with a product sensor, thus making it possible to determine, together with the product, data relating to a system or a machine with the aid of the product sensor. The data determined can be used to diagnose and/or control the system or machine. In this case, it is advantageous that the data are obtained at the location of the product and it is thus possible to directly determine a desirable or undesirable effect (for example of environmental parameters or of the system itself) on the product. This system can be used, for example, in automation, in systems or machines or in different product manufacture variants.
摘要:
A process for producing a solvent mixture comprising (A) at least one compound of formula (I) (B) at least one compound of formula (II a) or (II b) (C) optionally at least one additive selected from aromatic compounds, sultones and exo-methylene ethylene carbonates, melamine, urea, organic phosphates and halogenated organic carbonates, (D) optionally at least one lithium salt, and from 3 to 30 weight ppm of water, which process comprises (a) components (A), (B) and, if used, (C) being mixed with one another, (b) dried over at least one ion exchanger or molecular sieve, (c) separated from ion exchanger or, respectively, molecular sieve, and (d) at least one lithium salt, if used, being added, where the variables are defined as follows: R1, R2 are each the same or different and selected from C1-C4-alkyl, R3 is selected from hydrogen and C1-C4-alkyl.
摘要:
A sensor-based control permits an autonomous conveyor vehicle to carry out intelligent driving behavior which takes into account individual properties of the freight or cargo that is to be conveyed. For example, the acceleration and braking behavior of the autonomous conveyor vehicle can be selected as a function of the stability of the freight or cargo. A route or a parking place at which particular environmental conditions (e.g., temperature, humidity) occur can be planned using sensor measured values of a sensor network. The relatively advanced intelligence of the autonomous conveyor vehicle optimizes the handling of the freight or cargo and obviates the need for camera-based monitoring. For example, the loss of the freight or cargo from the loading surface can be detected by a sensor and signaled automatically.
摘要:
The use of imidazolium salts (I) where R1 and R3 are each independently an organic radical having 1 to 3000 carbon atoms, R2, R4 and R5 are each independently hydrogen or an organic radical having 1 to 3000 carbon atoms, X is an anion and n is the number 1, 2 or 3 as additives for fuels, especially as detergent additives for diesel fuels, as wax antisettling additives for middle distillate fuels and as lubricity improvers, and for improving the use properties of mineral and synthetic nonaqueous industrial fluids.
摘要:
The pharmaceutical preparation for treating endometriosis contains at least 28, preferably 30, daily dose units, each of which contain dienogest, cyproterone acetate, or chlormadinone acetate at a daily dose that is at most twice that required to inhibit ovulation together with one or more pharmaceutical aids and/or carriers. The daily dose units are administered in a method of prophylaxis and/or therapy of endometriosis continuously during a time interval of at least 169 days or 25 weeks, preferably more than two years. The method effectively reduces endometriosis and associated pain, while undesirable side effects including bone density decrease are reduced or eliminated.
摘要:
A method clusters a plurality of users in a mobile network, according to a specific profile. Data regarding the user is allocated to each user. Data is immediately exchanged between at least two users as soon as said users are located in a predefined communication range in order to spot users with profiles having a given content.
摘要:
The invention relates to an aerosol printer which has at least one atomising chamber and at least one printing head with at least one nozzle, these being connected directly or via connection lines. Furthermore, the aerosol printer has process gas-, transport gas- and focusing gas lines.
摘要:
An air guiding device on a wheel suspension element of a rear axle of a motor vehicle extends approximately transversely to the longitudinal direction of the motor vehicle. The air guiding device includes an element that extends substantially in a horizontal plane and is divided into a front section and a rear section. The two sections extend upwardly at different angles from a horizontal plane.
摘要:
A product may be provided with a product sensor, thus making it possible to determine, together with the product, data relating to a system or a machine with the aid of the product sensor. The data determined can be used to diagnose and/or control the system or machine. In this case, it is advantageous that the data are obtained at the location of the product and it is thus possible to directly determine a desirable or undesirable effect (for example of environmental parameters or of the system itself) on the product. This system can be used, for example, in automation, in systems or machines or in different product manufacture variants.