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    • 2. 发明申请
    • Production of bisphenol-A with reduced sulfur content
    • 生产具有降低硫含量的双酚A
    • US20050215833A1
    • 2005-09-29
    • US11043800
    • 2005-01-26
    • Rainer NeumannUlrich BlaschkeStefan Westernacher
    • Rainer NeumannUlrich BlaschkeStefan Westernacher
    • C07C37/20C07C37/82C07C37/84C07C39/16C08G64/06
    • C07C37/20C07C37/70C07C37/82C07C37/84C08G64/06C07C39/16
    • A process for the production of bisphenol-A having low concentration of sulphur is disclosed. The process comprise a) reacting phenol with acetone in the presence of a sulfonic acid ion exchanger to form a product mixture containing water, bisphenol-A/phenol adduct, phenol and sulfurous particles, and b) filtering the product mixture to separate the sulfurous particles to obtain a purified product mixture that contains water, phenol and bisphenol-A/phenol adduct. In one embodiment of the process further comprise distilling the purified product mixture to remove the water to obtain a first material system that contains said adduct and phenol, crystallizing the adduct, and removing the phenol by filtration using a filtering apparatus to obtain crystalline adduct. In a yet additional embodiment the process comprise crystallizing the purified product mixture to obtain a second material system that contains crystalline adduct, water and phenol and removing the phenol and water by filtration using a filtering apparatus to obtain crystalline adduct.
    • 公开了一种生产低浓度硫的双酚A的方法。 该方法包括a)在磺酸离子交换剂存在下使苯酚与丙酮反应,形成含有水,双酚A /苯酚加成物,苯酚和亚硫酸颗粒的产物混合物,和b)过滤产物混合物以分离出亚硫酸颗粒 以获得含有水,苯酚和双酚A /苯酚加合物的纯化产物混合物。 在该方法的一个实施方案中还包括蒸馏纯化的产物混合物以除去水以获得含有所述加合物和苯酚的第一材料体系,结晶加合物,并使用过滤装置通过过滤除去苯酚以获得结晶加合物。 在另外的实施方案中,该方法包括使纯化的产物混合物结晶以获得含有结晶加合物,水和苯酚的第二材料体系,并使用过滤装置通过过滤除去苯酚和水以获得结晶加合物。
    • 4. 发明授权
    • Production of bisphenol-A with reduced sulfur content
    • 生产具有降低硫含量的双酚A
    • US07112703B2
    • 2006-09-26
    • US11043800
    • 2005-01-26
    • Rainer NeumannUlrich BlaschkeStefan Westernacher
    • Rainer NeumannUlrich BlaschkeStefan Westernacher
    • C07C39/16
    • C07C37/20C07C37/70C07C37/82C07C37/84C08G64/06C07C39/16
    • A process for the production of bisphenol-A having low concentration of sulphur is disclosed. The process comprise a) reacting phenol with acetone in the presence of a sulfonic acid ion exchanger to form a product mixture containing water, bisphenol-A/phenol adduct, phenol and sulfurous particles, and b) filtering the product mixture to separate the sulfurous particles to obtain a purified product mixture that contains water, phenol and bisphenol-A/phenol adduct. In one embodiment of the process further comprise distilling the purified product mixture to remove the water to obtain a first material system that contains said adduct and phenol, crystallizing the adduct, and removing the phenol by filtration using a filtering apparatus to obtain crystalline adduct. In a yet additional embodiment the process comprise crystallizing the purified product mixture to obtain a second material system that contains crystalline adduct, water and phenol and removing the phenol and water by filtration using a filtering apparatus to obtain crystalline adduct.
    • 公开了一种生产低浓度硫的双酚A的方法。 该方法包括a)在磺酸离子交换剂存在下使苯酚与丙酮反应,形成含有水,双酚A /苯酚加成物,苯酚和亚硫酸颗粒的产物混合物,和b)过滤产物混合物以分离出亚硫酸颗粒 以获得含有水,苯酚和双酚A /苯酚加合物的纯化产物混合物。 在该方法的一个实施方案中还包括蒸馏纯化的产物混合物以除去水以获得含有所述加合物和苯酚的第一材料体系,结晶加合物,并使用过滤装置通过过滤除去苯酚以获得结晶加合物。 在另外的实施方案中,该方法包括使纯化的产物混合物结晶以获得含有结晶加合物,水和苯酚的第二材料体系,并使用过滤装置通过过滤除去苯酚和水以获得结晶加合物。
    • 7. 发明申请
    • Process for the preparation of polycarbonate
    • 制备聚碳酸酯的方法
    • US20060063906A1
    • 2006-03-23
    • US11226093
    • 2005-09-14
    • Ulrich BlaschkeStefan WesternacherWolfgang EbertRainer Neumann
    • Ulrich BlaschkeStefan WesternacherWolfgang EbertRainer Neumann
    • C08G64/00
    • C08G64/24
    • A process for the preparation of polycarbonate by the phase interface process is disclosed. The process includes (a) preparing a sodium hydroxide solution by chloralkali electrolysis, the solution containing not more than 30 ppm sodium chlorate relative to the weight of sodium hydroxide, and (b) reacting an aqueous solution of said sodium hydroxide with at least one dihydoxydiarylalkane to obtain a solution of disodium salt and (c) reacting said solution of disodium salt with phosgene in the presence of at least one organic solvent, a chain terminator and optionally a branching agent to obtain an oligocarbonate, and (d) condensing the oligocarbonate in the presence of at least one catalyst to obtain a material system containing polycarbonate and organic solvent and (e) separating off of the organic phase from said material system. The polycarbonate prepared by the inventive process is characterized by its low yellowness index.
    • 公开了通过相界过程制备聚碳酸酯的方法。 该方法包括(a)通过氯碱电解制备氢氧化钠溶液,所述溶液相对于氢氧化钠的重量含有不超过30ppm的氯酸钠,和(b)使所述氢氧化钠的水溶液与至少一种二氢二芳基烷烃 以获得二钠盐溶液,和(c)在至少一种有机溶剂,链终止剂和任选的支化剂的存在下,使所述二钠盐与光气反应,得到低聚碳酸酯,和(d)将低聚碳酸酯 存在至少一种催化剂以获得含有聚碳酸酯和有机溶剂的材料体系,和(e)从所述材料体系中分离有机相。 通过本发明方法制备的聚碳酸酯的特征在于其低黄度指数。
    • 8. 发明申请
    • ASSEMBLY PLIERS WITH DETACHABLE COUNTER-RATCHET
    • US20120247283A1
    • 2012-10-04
    • US13504228
    • 2010-10-22
    • Rainer Neumann
    • Rainer Neumann
    • B25B7/12
    • B25B7/12B25B7/16B25B27/10
    • The invention relates to a hand pliers for assembly purposes, more particularly for the assembly of pipe connections at pipe systems, the pliers comprised of two limbs which are rotatably connected to one another via a first link joint (1) and which by means of this link joint (1) are divided into an assembly limb and a handle limb (2,3), wherein the first handle limb (3) is divided into an off-handle lever (14) and into a handle-near lever (15) and wherein these two levers (14, 15) are rotatably connected to one another by means of a bolt (16) via a second link joint, wherein a tension wheel (17) and a ratchet wheel (18) with external toothing (27) connected torsionally proof to it are pivotably arranged on the bolt side by side (16) in axial direction, and wherein the tension wheel (17) engages into a tension means (20) that connects both handle limbs (2,3) to one another, and wherein a spring-loaded dog ratchet (25) is arranged at the handle-near lever (15), the dog ratchet engaging into the ratchet wheel (18) in such a manner that when the handle-near lever (15) makes a latching movement the ratchet wheel (18) and the tension wheel (17) execute a rotation that causes the closing of the pliers, with a spring-loaded arrest ratchet (30) being provided for which also engages in the ratchet wheel (18) and permits a rotation of the ratchet wheel (18) on closing the pliers, but which prevents its rotation in the opposite direction. It is the object of the present invention to provide a hand pliers whose arrest ratchet can be released even if subjected to great assembly forces. To solve this task the invention proposes a switch (33) by the actuation of which the direction of the spring loading of the arrest ratchet (30) is reversible in such a manner that the actuation of the switch (33) takes the effect that the engagement of the arrest ratchet (30) into the ratchet wheel (18) is abolished.