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公开(公告)号：US4127561A
公开(公告)日：1978-11-28
申请号：US881974
申请日：1978-02-27
申请人： Wolfgang Alewelt , Gunter Jacobs , Dieter Margotte , Erich Lux
发明人： Wolfgang Alewelt , Gunter Jacobs , Dieter Margotte , Erich Lux
摘要： The present invention provides thermoplastic aromatic polycarbonates and a process for their production according to the phase boundary polycondensation process, characterized in that tertiary amines are employed as catalysts and are distilled beforehand over about 0.3-10% by weight, relative to the weight of the tertiary amine, of reducing agents and/or acid anhydrides with the exclusion of atmospheric oxygen.
摘要翻译： 本发明提供热塑性芳族聚碳酸酯及其制备方法，其特征在于使用叔胺作为催化剂，预先蒸馏约0.3-10重量％，相对于叔碳酸酯的重量， 胺，还原剂和/或酸酐，排除大气氧。
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2.发明授权Process for the preparation of polycarbonates catalyzed by cyclic aza compounds 失效环状氮杂化合物催化聚碳酸酯的制备方法
公开(公告)号：US4346210A
公开(公告)日：1982-08-24
申请号：US88694
申请日：1979-10-26
CPC分类号： C08G64/24
摘要： The present invention relates to a process for the preparation of aromatic polycarbonates from diphenols by the phase boundary process, which is characterized in that cyclic, preferably monocyclic or bicyclic, aza compounds are used as catalysts. The present invention also relates to the polycarbonates obtainable according to the process, which are distinguished by high light transmission and a low tendency to yellowing, even after relatively severe exposure to heat.
摘要翻译： 本发明涉及通过相界法从二酚制备芳族聚碳酸酯的方法，其特征在于使用环状，优选单环或双环的氮杂化合物作为催化剂。 本发明还涉及根据该方法可获得的聚碳酸酯，即使在相对严重的暴露于热之后，其也被高透光性和低黄变的特性区分。
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3.发明授权Glass fiber-reinforced polycarbonates with improved mechanical properties containing 0.5 to 5.0% of organopolysiloxane 失效具有改善机械性能的玻璃纤维增强聚碳酸酯，其含有0.5至5.0％的有机基聚硅氧烷
公开(公告)号：US4147707A
公开(公告)日：1979-04-03
申请号：US679108
申请日：1976-04-21
摘要： Glass fiber reinforced polycarbonate molding compositions are taught which have improved mechanical properties. This improvement is achieved by incorporating between about 0.5 to 5 wt.% of organopolysiloxanes into the composition. The compositions of this invention have improved impact, notched impact and elongation properties without a loss in elastic modulus.
摘要翻译： 教导了具有改进的机械性能的玻璃纤维增强聚碳酸酯模塑组合物。 通过在组合物中加入约0.5至5重量％的有机聚硅氧烷来实现这一改进。 本发明的组合物具有改善的冲击，缺口冲击和伸长性能，而不损失弹性模量。
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公开(公告)号：US06716933B2
公开(公告)日：2004-04-06
申请号：US10196022
申请日：2002-07-16
申请人： Wolfgang Alewelt , Wolfgang Ebert , Thomas Fritz , Dirk Jahn , Stefan Westernacher , Frank Bruynseels , Johann Rechner
发明人： Wolfgang Alewelt , Wolfgang Ebert , Thomas Fritz , Dirk Jahn , Stefan Westernacher , Frank Bruynseels , Johann Rechner
IPC分类号： C08G6400
摘要： The present invention relates to a process for working up solutions of polymers in organic solvents contaminated by alkaline constituents, using homogeneously soluble acids, especially by the introduction of an acid gas, and subsequent washing, and to the polymers so obtainable, which are distinguished by the fact that, on treatment with moist heat (sterilisation), only few defects caused by decomposition are formed, to the use thereof in the production of extrudates and molded specimen, and to the extrudates and molded specimen produced from those polymers themselves.
摘要翻译： 本发明涉及使用均匀溶解的酸，特别是通过引入酸性气体和随后的洗涤以及可获得的聚合物来处理聚合物在被碱性成分污染的有机溶剂中的溶液的方法以及可获得的聚合物， 在湿热处理（灭菌）中，形成仅有少量由分解引起的缺陷，用于生产挤出物和模塑试样，以及由这些聚合物本身制备的挤出物和模塑试样。
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公开(公告)号：US5373082A
公开(公告)日：1994-12-13
申请号：US155309
申请日：1993-11-19
IPC分类号： C08G64/20 , C08G64/30 , C08G64/40 , C08G64/42 , C08J11/28 , C08K5/00 , C08L69/00 , C08G64/00
CPC分类号： C08G64/30
摘要： A process for the production of polycarbonates by melt transesterification is disclosed. Accordingly, polycarbonate waste is dissolved in monophenols and at an elevated temperature and in the presence of a catalyst degraded to yield oligocarbonates, diaryl carbonates and diphenols. Following the optional separation of fillers and other additives there is produced by partial recondensation and the distillation of monophenol a higher viscosity oligocarbonate having a OH and aryl carbonate terminal groups and a weight average molecular weight of 8000 to 18000, the oligocarbonate thus produced is then polycondensed to form a polycarbonate resin.
摘要翻译： 公开了通过熔融酯交换法生产聚碳酸酯的方法。 因此，将聚碳酸酯废物溶解在单酚中并在升高的温度下并在催化剂存在下降解以产生低聚碳酸酯，碳酸二芳基酯和二酚。 在填充剂和其它添加剂的任选分离之后，通过部分重新缩合和单酚蒸馏产生具有OH和芳基碳酸酯末端和重均分子量为8000至18000的较高粘度的低聚碳酸酯，然后将如此生产的低聚碳酸酯进行缩聚 以形成聚碳酸酯树脂。
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公开(公告)号：US4966958A
公开(公告)日：1990-10-30
申请号：US375282
申请日：1989-07-03
CPC分类号： C08G63/19
摘要： Aromatic polyesters are prepared by the transesterification of aromatic dicarboxylic acid dialkyl esters with diester derivatives of divalent phenols at temperatures of about 260.degree. to 350.degree. C. with removal of the resulting monocarboxylic acid alkyl ester from the reaction mixture.
摘要翻译： 芳族聚酯通过芳族二羧酸二烷基酯与二价酚的二酯衍生物在约260℃至350℃的温度下酯交换反应制备，从反应混合物中除去得到的一元羧酸烷基酯。
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公开(公告)号：US4753994A
公开(公告)日：1988-06-28
申请号：US936852
申请日：1986-12-02
申请人： Russell P. Carter, Jr. , Ulrich Grigo , Sivaram Krishnan , Mark W. Witman , Klaus Kircher , Hans-Jurgen Kress , Wolfgang Alewelt
发明人： Russell P. Carter, Jr. , Ulrich Grigo , Sivaram Krishnan , Mark W. Witman , Klaus Kircher , Hans-Jurgen Kress , Wolfgang Alewelt
摘要： The present invention is related to polycarbonate molding compositions containing a co-precipitate of a polycarbonate resin and a fluoropolymer. This co-precipitate was found to be suitable as an additive for polycarbonate resins because it offers improved dispersibility with the resin and good flammability performance as well as aesthetic characteristics. The co-precipitate is prepared by first mixing an aqueous dispersion of a fluoropolymer with a polycarbonate solution and then precipitating both using a suitable precipitation agent. After isolation washing and drying the co-precipitate of the invention is suitable for incorporation in a polycarbonate resin optionally with known flame retarding agents. Molded parts prepared from the compositions of the invention are characterized by their improved homogeneity and flame retardance.
摘要翻译： 本发明涉及含有聚碳酸酯树脂和含氟聚合物的共沉淀物的聚碳酸酯模塑组合物。 发现这种共沉淀物适合作为聚碳酸酯树脂的添加剂，因为它提供了与树脂的改善的分散性和良好的可燃性以及美学特性。 通过首先将含氟聚合物的水性分散体与聚碳酸酯溶液混合，然后使用合适的沉淀剂沉淀二者来制备共沉淀物。 分离洗涤和干燥后，本发明的共沉淀物适合于任选地使用已知的阻燃剂掺入聚碳酸酯树脂中。 由本发明组合物制备的成型部件的特征在于其均匀性和阻燃性的改善。
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公开(公告)号：US06613869B1
公开(公告)日：2003-09-02
申请号：US10070792
申请日：2002-04-12
申请人： Klaus Horn , Ralf Hufen , Wolfgang Alewelt , Peter Gebauer , Franky Bruynseels
发明人： Klaus Horn , Ralf Hufen , Wolfgang Alewelt , Peter Gebauer , Franky Bruynseels
IPC分类号： C08G6400
CPC分类号： C08G64/14 , Y10T428/1397
摘要： A branched polycarbonate resin suitable for making containers is disclosed. The polycarbonate is characterized in that at 260° C. and shear rate of 10 s−1 it has a melt viscosity of 5500 to 900 Pas, and in that at 260° C. and shear rate of 1000 s−1 it has a melt viscosity of 880 tom 1500 Pas, and in that it has a melt flow index (MFR) of 0.1 to 3.0 g/10 min. A container made of the polycarbonate exhibits great breaking strength.
摘要翻译： 公开了一种适于制造容器的支化聚碳酸酯树脂。 聚碳酸酯的特征在于，在260℃和剪切速率为10s -1的条件下，其熔体粘度为5500至900Pa·s，在260℃和剪切速率为1000s -1的条件下具有熔体 粘度为880汤姆为1500Pa·s，熔体流动指数（MFR）为0.1〜3.0g / 10分钟。 由聚碳酸酯制成的容器具有很大的断裂强度。
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公开(公告)号：US06548691B2
公开(公告)日：2003-04-15
申请号：US10015311
申请日：2001-12-12
申请人： Wolfgang Alewelt , Steffen Kühling
发明人： Wolfgang Alewelt , Steffen Kühling
IPC分类号： C07C6996
摘要： An improvement to the interfacial boundary process for producing carbonic acid diaryl esters is disclosed. In the two-stage process that entails phosgene and monophenols reaction in an inert solvent, in the presence of alkali and in the presence of a nitrogen base catalyst, the improvement comprising maintaining a temperature below 50° C. in the first and second stages.
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10.发明授权Process for isolating polycarbonates from their solutions with tube having cross sectional contrictions 失效用具有横截面限制的管从其溶液中分离聚碳酸酯的方法
公开(公告)号：US5317083A
公开(公告)日：1994-05-31
申请号：US87908
申请日：1993-07-09
申请人： Dieter Freitag , Claus Wulff , Wolfgang Alewelt , Hermann Kauth
发明人： Dieter Freitag , Claus Wulff , Wolfgang Alewelt , Hermann Kauth
IPC分类号： C08G64/40
CPC分类号： C08G64/403
摘要： The present invention relates to a process for isolating polycarbonates in which a solution of polycarbonate in an organic solvent is dispersed with steam and which is characterized in that the resulting suspension of polycarbonate particles, condensed water and water/solvent vapor is subsequently dried in a tube with cross-sectional constrictions.
摘要翻译： 本发明涉及一种分离聚碳酸酯的方法，其中聚碳酸酯在有机溶剂中的溶液用蒸汽分散，其特征在于所得到的聚碳酸酯颗粒，冷凝水和水/溶剂蒸气的悬浮液随后在管中干燥 具有横截面收缩。
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