Abstract: The invention relates to cross-linked pearl polymers doped with superparamagnetic iron oxide, to a method for producing said pearl polymers, and to their use in nucleic acid diagnostics.

Abstract: The present invention provides crystals of an adduct of a bisphenol and a phenol and methods of producing those crystals. The crystals may find use in preparing bisphenols.

Abstract: An LED headlamp array comprising discrete LED light source modules, where each light source module has an LED light source, optics dedicated to each LED light source, and a faceted reflector.

Abstract: The present invention provides mixtures containing bisphenol A, methods for the production thereof. The mixtures of the present invention may find use in the production of polymeric materials.

Abstract: A pair of manual tongs comprising two limbs which are rotatably connected in a common first rotational axis. The first limb is separated into two levers in its lever section, the two levers being rotatably connected in a first articulation, in a second rotational axis parallel to the common first rotational axis. A means of traction connects the second limb to the lever of the first limb, which is situated at a distance from the handle. The means of traction can be shortened by means of a pivotal movement of the lever of the first limb, which is situated close to the handle, above the second rotational axis. The areas of use of the manual tongs are often difficult to access. According to the invention, the second limb of the inventive manual tongs is thus separated into a lever situated at a distance from the handle and a lever situated close to the handle and the two levers are rotatably connected in a second articulation, in a third rotational axis which is parallel to the common first rotational axis.

Abstract: Monodisperse cation-exchangers and anon-exchangers are conditioned by a process and thereafter used as catalysts and for the production of bisphenols.

Abstract: A process for the production of 2,2-bis(4-hydroxyphenyl)propane (BPA) is disclosed. The process that entails reacting acetone with phenol in the presence of cross-linked sulfonated polystyrene resins is characterised in that BPA is separated from the reaction solution downstream of the reaction unit by means of a multi-stage vacuum distillation and a subsequent single- or multi-stage layer crystallisation. The by-product stream with accumulated by-products is returned downstream of the reaction unit.

Abstract: 2,2-bis(4-hydroxyphenyl)propane (BPA) is produced by reacting acetone and phenol in the presence of cross-linked sulfonated polystyrene resins and then separating the BPA off from the reaction solution.

Abstract: A device for exchanging a die plate of a molten bisphenol A prilling tower is described. The device comprises: (a) at least two die plates; (b) a guide which is in contact with the die plates; and (c) a drive mechanism, wherein the drive mechanism moves the die plates linearly and serially between an operating position and an exchange position along the guide. Also described is a process of automated operation of the device at the top of a bisphenol A prilling tower.

Abstract: The present invention provides crystals of an adduct of a bisphenol and a phenol and methods of producing those crystals. The crystals may find use in preparing bisphenols.

Abstract: A method for producing bisphenol A in prill form is disclosed. Molten bisphenol is top-fed into a prilling tower via a plate containing a plurality of nozzles. A gas coolant guided through a circuit is led into said tower in a counter flow direction. The prills are cooled to about room temperature, collected at the bottom of the tower and removed. Also disclosed is the device for carrying out the inventive method and the prills thus produced.

Abstract: The invention relates to transparent, impact-resistant thermoplastic molding materials containing A) a matrix consisting of at least two different mixture components, B) an impact-resistance modifier, C) an additive, essentially consisting of c1) at least one 2,6-disubstituted phenol, and c21) at least one organic phosphite of general formula (I) P(OR1)n(OAr)3−n, c22 at least one organic phosphite of general formula (IIa) and/or (IIb), or c23) a mixture of compounds in accordance with c21) and c22).

Abstract: A container made of polycarbonate resin is disclosed. The container is characterized in that the polycarbonate is prepared by the phase interface process that is characterized in that the aqueous solution of an alkali salt of a bisphenol used, contains dissolved oxygen in an amount less than 150 ppb. The process for making the container is also disclosed.

Abstract: A process for fluidizing bisphenol dust is disclosed. The process entails adding 0.1 to 10 parts by weight of water per 1 part by weight of bisphenol dust. Also disclosed is a process for preparing a bisphenol wherein the fluidized bisphenol dust according to the invention is introduced before, during or after reaction of a phenol with a carbonyl compound.

Abstract: The invention relates to fluidised bisphenol dust consisting of bisphenol dust and water, to a method for producing the same and to a method for producing a bisphenol, whereby fluidised bisphenol dust is added during production.

Abstract: The invention relates to crosslinked bead polymers doped with superparamagnetic iron oxide, to a process for the preparation of the bead polymers, and to the use thereof in nucleic acid diagnosis.

Abstract: A process for the commissioning of a process for the production of 2,2-bis(4-hydroxyphenyl)propane is disclosed. The process that entails reacting phenol with acetone in the presence of sulfonated cross-linked polystyrene resins is characterized in that the commissioning takes place with an acetone concentration reduced below, and a phenol concentration increased above, that of the optimal sustained operation state, with a reduced quantitative throughput, and in that with temperature control, the reactant quantity and the acetone content of the reactor feed are subsequently increased until the sustained operating state is reached.

Abstract: The invention relates to substance mixtures, containing bisphenol A, two methods for production thereof and use thereof for production of polymeric materials.

Abstract: The application relates to a process for producing high-purity bis(4-hydroxyaryl)alkanes from adducts of bis(4-hydroxyaryl)alkanes and aromatic hydroxy compounds, which are obtained by acid-catalysed reaction of the aromatic hydroxy compounds with ketones.

Abstract: An interface module for the operation of a chip card for data exchange between the chip card and a microprocessor system. The interface module includes circuits for communicating with the microprocessor system, communicating with the chip card in accordance with data and control instructions received from the microprocessor system, generating and/or controlling the chip card supply voltage, and for generating a clock signal which modified with respect to a clock frequency for the chip card from the clock pulse of a piezoelectric crystal oscillator. The interface module enable the microprocessor system to immediately control the chip card without the interconnection of another microprocessor.