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1. 发明专利

DE19952850A1 未知
公开(公告)号：DE19952850A1
公开(公告)日：2001-05-10
申请号：DE19952850
申请日：1999-11-03
申请人： BAYER AG , BAYER ANTWERPEN NV
发明人： KUEHLING STEFFEN , BRUYNSEELS FRANKY , MEIRVENNE DIRK VAN , CLEYN RENE DE , BOEDIGER MICHAEL
IPC分类号： C08J5/00 , C08G64/00 , C08J5/18 , C08L69/00 , C08G64/20
摘要： The invention relates to polycarbonate substrates and to the use thereof in the production of molded articles of especially high purity and extremely high surface luster. The invention also relates to the molded articles producible from the inventive polycarbonate substrate.

2. 发明专利

BR0015337A 未知
公开(公告)号：BR0015337A
公开(公告)日：2002-07-09
申请号：BR0015337
申请日：2000-10-23
申请人： BAYER AG , BAYER ANTWERPEN NV
发明人： BOEDIGER MICHAEL , KUEHLING STEFFEN , BRUYNSEELS FRANKY , MEIRVENNE DIRK VAN , CLEYN RENE DE
IPC分类号： C08G64/04 , C08J5/18 , C08L69/00 , G11B7/24 , G11B7/253
摘要： Polycarbonate substrates, the preparation of which is based on 1,1-bis-(4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, and their use for producing shaped articles with particularly high purity and extremely high surface brilliance and also the shaped articles which can be produced from the polycarbonate substrate are described.

3. 发明专利

DE19952851A1 未知
公开(公告)号：DE19952851A1
公开(公告)日：2001-05-10
申请号：DE19952851
申请日：1999-11-03
申请人： BAYER AG , BAYER ANTWERPEN NV
发明人： KUEHLING STEFFEN , BRUYNSEELS FRANKY , MEIRVENNE DIRK VAN , CLEYN RENE DE , BOEDIGER MICHAEL
IPC分类号： C08G64/04 , C08J5/18 , C08L69/00 , G11B7/24 , G11B7/253 , C08G64/34
摘要： The invention relates to polycarbonate substrates produced on the basis of 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexanone and to the use thereof in the production of molded articles of especially high purity and extremely high surface luster. The invention also relates to the molded articles produced from the inventive polycarbonate substrate.

4. 发明专利

DE19952848A1 未知
公开(公告)号：DE19952848A1
公开(公告)日：2001-05-10
申请号：DE19952848
申请日：1999-11-03
申请人： BAYER AG , BAYER ANTWERPEN NV
发明人： KUEHLING STEFFEN , BRUYNSEELS FRANKY , MEIRVENNE DIRK VAN , CLEYN RENE DE , BOEDIGER MICHAEL
IPC分类号： C08J5/00 , C08G64/24 , C08G64/40 , G11B7/2534 , G11B7/26 , G11B11/105 , C08G64/20 , C08L69/00 , G11B7/24
摘要： The invention relates to a method of producing polycarbonates using feedstock with a low metal or alkaline earth metal content.

5. 发明专利

BR0015335A 未知
公开(公告)号：BR0015335A
公开(公告)日：2002-07-09
申请号：BR0015335
申请日：2000-10-23
申请人： BAYER AG , BAYER ANTWERPEN NV
发明人： BOEDIGER MICHAEL , KUEHLING STEFFEN , BRUYNSEELS FRANKY , MEIRVENNE DIRK VAN , CLEYN RENE DE
IPC分类号： C08J5/00 , C08G64/00 , C08J5/18 , C08L69/00
摘要： Polycarbonate substrates having low concentration of defects are disclosed. The substrates are suitable for producing molded articles characterized by low cloudiness.

6. 发明专利

DE50012618D1 未知
公开(公告)号：DE50012618D1
公开(公告)日：2006-05-24
申请号：DE50012618
申请日：2000-10-23
申请人： BAYER MATERIALSCIENCE AG , BAYER ANTWERPEN NV
发明人： BOEDIGER MICHAEL , KUEHLING STEFFEN , BRUYNSEELS FRANKY , VAN MEIRVENNE DIRK , DE CLEYN RENE
IPC分类号： C08J5/18 , C08G64/04 , C08L69/00 , G11B7/24 , G11B7/253
摘要： Polycarbonate substrates, the preparation of which is based on 1,1-bis-(4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, and their use for producing shaped articles with particularly high purity and extremely high surface brilliance and also the shaped articles which can be produced from the polycarbonate substrate are described.

7. 发明专利

DE50011342D1 未知
公开(公告)号：DE50011342D1
公开(公告)日：2006-02-23
申请号：DE50011342
申请日：2000-10-23
申请人： BAYER MATERIALSCIENCE AG , BAYER ANTWERPEN NV
发明人： BOEDIGER MICHAEL , KUEHLING STEFFEN , BRUYNSEELS FRANKY , VAN MEIRVENNE DIRK , DE CLEYN RENE
IPC分类号： C08J5/00 , C08G64/00 , C08J5/18 , C08L69/00
摘要： Polycarbonate substrates having low concentration of defects are disclosed. The substrates are suitable for producing molded articles characterized by low cloudiness.

8. 发明专利

BR0015263A 未知
公开(公告)号：BR0015263A
公开(公告)日：2002-06-25
申请号：BR0015263
申请日：2000-10-23
申请人： BAYER AKTIENGESELELLSCHAFT , BAYER ANTWERPEN NV
发明人： BOEDIGER MICHAEL , KUEHLING STEFFEN , BRUYNSEELS FRANKY , MEIRVENNE DIRK VAN , CLEYN RENE DE
IPC分类号： C08J5/00 , C08G64/24 , C08G64/40 , G11B7/2534 , G11B7/26 , G11B11/105 , G11B7/24
摘要： A process for the preparation of polycarbonate by the phase boundary process is disclosed. The process entails reacting at least one dihydroxydiarylalkane in the form of its alkali metal salts with phosgene in the heterogeneous phase in the presence of sodium hydroxide solution and an organic solvent. The process is characterized in that the feedstock have but low content of Fe, Cr, Ni, Zn, Ca, Mg, Al metals or homologues thereof, and in that the organic solvent is separated off, and in that the polycarbonate which is obtained is worked up. The resulting polycarbonate is particularly useful in producing transparent shaped articles.

9. 发明专利

JP2001278826A METHOD FOR REMOVING DISSOLVED OXYGEN FROM PHENOL 失效
公开(公告)号：JP2001278826A
公开(公告)日：2001-10-10
申请号：JP2001026694
申请日：2001-02-02
申请人： BAYER AG
发明人： HEYDENREICH FRIEDER DIPL CHEM , WAGNER DR RUDOLF , BOEDIGER MICHAEL
IPC分类号： B01J41/04 , B01J41/14 , C07C37/68 , C07C37/86 , C07C39/04 , C07C39/16 , C08G64/06 , C08G64/20
摘要： PROBLEM TO BE SOLVED: To provide a method for catalytically removing dissolved oxygen, which is considered to cause discoloration by its nonselective action, in order to solve the problem that, although polycarbonate is used in a wide range, and it is used especially in a field high in required performance, for example, the production of a high-quality optical material, a compact disk or the like and in a field of electron optics and the like, the use of polycarbonate in such a field is often disturbed due to the discoloration caused even with zealous effort to hold high levels in the qualities of the starting materials. SOLUTION: The discoloration, which is undesirable in polycarbonate manufacturing, is avoided through the removal of trace of oxygen which remains in phenol before bisphenol A manufacturing by adding hydrogen in the presence of an anion exchanger, to which a noble metal has been added as a dopant.

10. 发明专利

JP2013249306A Method for producing bisphenol 审中-公开
标题翻译：生产双酚的方法
公开(公告)号：JP2013249306A
公开(公告)日：2013-12-12
申请号：JP2013165930
申请日：2013-08-09
申请人： Bayer Ag , バイエルアクチェンゲゼルシャフトBayer Aktiengesellschaft
发明人： NEUMANN RAINER , LANZE ROLF , HEYDENREICH FRIEDER , BOEDIGER MICHAEL , PREIN MICHAEL
IPC分类号： C07C37/84 , C07C39/16
CPC分类号： C07C37/84 , C07C37/685 , C07C39/16
摘要： PROBLEM TO BE SOLVED: To provide an improved method for producing crystals from an adduct of a bisphenol and a phenol.SOLUTION: A method for producing adduct crystals of a bisphenol and a phenol including (a) the preparation of solution containing the bisphenol and phenol, and (b) the continuous crystallization in ≥1 crystallization device having a crystallization tank, a circulation pump and a cooling device is provided with that the staying times of liquid for crystallization in the crystallization tank are 2 to 12 h in each of the steps, the crystallization is performed by 1 to 3 steps comprising each of the crystallization devices, the temperature in the crystallization tank at the final crystallization step is 40 to 70°C, the bisphenol concentration in the flowing-in material to the first crystallization step is 15 to 40 mass%, the concentration of the bisphenol as a dissolved form in mother liquid in the flowing-out material from the final crystallization step is 10 to 20 mass% and the ratio of the crystals from the adduct of a bisphenol and a phenol is 20 to 30 mass%, the suspension of reaction mixture and crystals from the adduct contained in it are circulated by maximum 150 W/mpump energy, and the suspension is passed through in the circulating cooling device from its top part to bottom part by 1 to 5 m/s speed.
摘要翻译：要解决的问题：提供从双酚和苯酚的加合物制备晶体的改进方法。溶液：一种生产双酚和苯酚的加合物晶体的方法，包括（a）制备含有双酚和苯酚的溶液，（b）在具有结晶槽，循环泵和冷却装置的≥1结晶装置中的连续结晶，在结晶槽中的结晶液停留时间为2〜12小时，通过包括每个结晶装置的1至3个步骤进行结晶，最终结晶步骤中结晶槽中的温度为40至70℃，向第一结晶步骤的流入材料中的双酚浓度为 15〜40质量％时，来自最终结晶步骤的流出物中的母液中的溶解形式的双酚的浓度为10〜20质量％％，双酚和苯酚加合物的结晶比为20〜30质量％，反应混合物的悬浮液和其中含有的加合物的结晶以最大的150W /分钟的能量循环，悬浮液为在循环冷却装置中从顶部到底部通过1至5m / s的速度。

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