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1.发明公开Method of preparing chloroformiate compounds 失效Methode zur Herstellung von Chlorformiatverbindungen。
公开(公告)号：EP0596206A1
公开(公告)日：1994-05-11
申请号：EP93113315.1
申请日：1993-08-20
发明人： Van Hout, Henricus Hubertus Maria , Maas, Christianus Joannes Jacobus , Van der Wekke, Laurus , Oyevaar, Martin Herke
摘要： The invention relates to a method of preparing a compound of formula 1
wherein R i , R 2 and R 3 correspond to H, a branched or non-branched, optionally substituted alkyl group, or an optionally substituted aryl group, suitable as a chain stopper in the preparation of an aromatic polycarbonate, by reaction of a compound of formula 2
wherein Ri, R 2 and R 3 have the meanings described hereinbefore, with phosgene, comprising the continuous supply of the compound of formula 2 and phosgene to a solution of phosgene in a solvent, the temperature being kept at a value between 0 and 15°C and the pH being kept at a value between 1 and 6.摘要翻译： 本发明涉及制备式1化合物
的方法，其中R 1，R 2和R 3对应于H，支链或非支链的任选取代的烷基或任选取代的芳基，适合作为链终止剂 在芳香族聚碳酸酯的制备中，通过使光化学式2的化合物（其中R1，R2和R3具有上述含义）的式2化合物 反应，包括将式2化合物和光气连续供给到 光气在溶剂中，温度保持在0至15℃之间，pH值保持在1和6之间。 -
2.发明公开Benzoxazolyl optical brighteners in and for thermoplastic compositions 失效苯并恶唑基Aufheller和热塑性淀粉Zusammensetzungen。
公开(公告)号：EP0680996A1
公开(公告)日：1995-11-08
申请号：EP94112877.9
申请日：1994-08-18
发明人： Van Hout, Henricus Hubertus Maria , Hoover, James Franklin , Roell, Karl Heinz , Willemsen, Augustina Martina
IPC分类号： C08K5/00
CPC分类号： C08K5/45 , Y10S430/134
摘要： Benzoxazolyl brightner compounds and thermoplastic combinations containing such are provided herein. The thermoplastic compositions comprise a thermoplastic resin, a phosphite heat stabilizer present in reduced levels, a brightner present in reduced levels and a pigment. Preferably the thermoplastic resin composition is transparent in nature. The compositions are useful for making molded and blow molded articles which require high levels of transparency, for example, glazing materials such thermoplastic windows. The composition exhibits enhanced appearance, namely a bright natural color in combination with low levels of yellowness by utilizing in combination reduced levels of phosphite and reduced levels of brightner, with moderate levels of pigment.
摘要翻译： 本文提供了苯并恶唑基光亮剂化合物和含有这些化合物的热塑性组合物。 热塑性组合物包括热塑性树脂，以降低的水平存在的亚磷酸盐热稳定剂，以降低的水平存在的增白剂和颜料。 优选地，热塑性树脂组合物在本质上是透明的。 该组合物可用于制造需要高水平透明度的模制和吹塑制品，例如玻璃材料，例如热塑性窗。 组合物表现出增强的外观，即通过以中等水平的颜料组合降低亚磷酸盐水平和降低水平的光泽剂，结合低水平的黄色而具有明亮的天然色彩。
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4.发明公开
公开(公告)号：EP0524380A1
公开(公告)日：1993-01-27
申请号：EP92107078.5
申请日：1992-04-25
IPC分类号： C08G64/24
CPC分类号： C08G64/24
摘要： The invention relates to a method of preparing aromatic polycarbonates by catalytic interface polymerisation of at least one bivalent phenol and a carbonyl halide in the presence of a polycondensation catalyst, which method is characterised in that the conversion is carried out in a two-phase system with continuous dosing of the carbonyl halide, which two-phase system is based on water and an organic solvent, in which the quantity of organic solvent at the beginning of the polycondensation lies between 10% and 75% of the quantity of organic solvent which is required at the polymerisation temperature for dissolving the quantity of polycarbonate which may be formed from the quantity of bivalent phenol which is present at the beginning of the polycondensation, in that after dosing at least 20% of the carbonyl halide a remaining quantity of organic solvent is added which is at least sufficient to keep the formed polycarbonate in solution.
摘要翻译： 本发明涉及通过至少一种二价苯酚和羰基卤化物在缩聚催化剂存在下的催化界面聚合来制备芳族聚碳酸酯的方法，该方法的特征在于转化在两相体系中进行， 连续计量的两相系统基于水和有机溶剂的羰基卤化物，其中缩聚开始时的有机溶剂的量在所需的有机溶剂的量的10％至75％之间 在聚合温度下溶解可以由缩聚开始时存在的二价苯酚的量形成的聚碳酸酯的量，因为在给予至少20％的羰基卤化物后，加入剩余量的有机溶剂 其至少足以将形成的聚碳酸酯保持在溶液中。
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