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1. 依法登记的发明

USH1943H1 Process for the manufacture of bisphenol-A 有权
公开(公告)号：USH1943H1
公开(公告)日：2001-02-06
申请号：US09211731
申请日：1998-12-15
申请人： Gaylord M. Kissinger , Ryozo Sato
发明人： Gaylord M. Kissinger , Ryozo Sato
IPC分类号： C07C3768
摘要： A process for producing a dihydric phenol preferably bisphenol-A consisting of the steps of (1) formulating reaction ingredients of phenol, acetone, recycle bisphenol A, impurities, an acid catalyst and water, (2) reacting the ingredients to form a product mix consisting of bisphenol-A, unreacted phenol, by-products, acetone and water, (3) crystallizing the product mix forming a slurry of bisphenol-A/phenol adduct crystals solid phase, (4) separating the solid phase from the liquid phase by filtration, (5) removing the phenol from the bisphenol-A/phenol adduct to obtain a crude bisphenol-A, and (6) purifying the crude bisphenol by fractional melt crystallization to obtain a bisphenol-A of at least 99.5% purity. Optionally, the process may include the steps of recycling the liquid phase from step (3) back to the reaction step after removal of the water of reaction, and further removing entrained phenol and acetone from the removed water of reaction which phenol and acetone is also recycled back to the reaction step.

2. 外观设计

USD532903S1 Bladed wheel for a centrifuge air blower 有权
标题翻译：用于离心风机的叶轮
公开(公告)号：USD532903S1
公开(公告)日：2006-11-28
申请号：US29220657
申请日：2005-01-04
申请人： Masahiko Hirata , Ryozo Sato , Ichiro Takahara , Shinji Yoshida
设计人： Masahiko Hirata , Ryozo Sato , Ichiro Takahara , Shinji Yoshida

3. 发明授权

US06197917B1 Method for manufacturing polycarbonate for optical use 有权
标题翻译：制造光学用聚碳酸酯的方法
公开(公告)号：US06197917B1
公开(公告)日：2001-03-06
申请号：US09376450
申请日：1999-08-18
申请人： Takato Kimura , Satoru Omori , Ryozo Sato , Tomoaki Shimoda , Akio Kanezawa
发明人： Takato Kimura , Satoru Omori , Ryozo Sato , Tomoaki Shimoda , Akio Kanezawa
IPC分类号： C08G6400
CPC分类号： C08G64/307
摘要： The specification provides a method for the manufacture of a high-quality optical polycarbonate that contains few inorganic or organic impurities or other microparticles, and that has a superior hue. Specifically, the specification provides a method for the manufacture of a polycarbonate by the melt polycondensation of a bisphenol and a carbonic diester, wherein the molten mixture of a bisphenol and a carbonic diester is filtered with a membrane filter made of a fluororesin, after which melt polycondensation is conducted.
摘要翻译：本说明书提供了制造含有少量无机或有机杂质或其它微粒并且具有优异色调的高品质光学聚碳酸酯的方法。具体地，本说明书提供了通过双酚和碳酸二酯的熔融缩聚制造聚碳酸酯的方法，其中双酚和碳酸二酯的熔融混合物用由氟树脂制成的膜过滤器过滤，之后熔化缩聚进行。

4. 发明授权

US6008315A Manufacturing method for bisphenols and a manufacturing method for polycarbonate 有权
标题翻译：双酚的制造方法和聚碳酸酯的制造方法
公开(公告)号：US6008315A
公开(公告)日：1999-12-28
申请号：US208651
申请日：1998-12-10
申请人： Takato Kimura , Satoru Omori , Ryozo Sato , Tomoaki Shimoda
发明人： Takato Kimura , Satoru Omori , Ryozo Sato , Tomoaki Shimoda
IPC分类号： B01J31/08 , C07B61/00 , C07C37/20 , C07C37/70 , C07C37/82 , C07C39/16 , C08G64/06 , C08G64/20 , C08G63/00
CPC分类号： C08G64/06 , C07C37/20 , C07C37/70 , C07C37/82
摘要： A phenol and a ketone are reacted to form bisphenol, and the liquid bisphenol obtained or a mixed solution of said solution and a phenol is filtered through a calcined metal filter to obtain bisphenol which makes it possible to efficiently obtain bisphenol which either does not contain fine particulate impurities or contains such impurities only in minute amounts, and a method for manufacturing polycarbonate using bisphenol obtained by this method. The filtration grade of the calcined metal filter should be 1.0 .mu.m or less. After filtering, the calcined metal filter can be backwashed or chemically washed and then reused. The bisphenol should preferably be bisphenol A.
摘要翻译：使苯酚和酮反应形成双酚，所得到的液体双酚或所述溶液与苯酚的混合溶液通过煅烧金属过滤器过滤，得到双酚，可以有效地获得不含微细的双酚颗粒杂质或仅含有这些杂质的微量元素，以及使用该方法得到的使用双酚的聚碳酸酯的制造方法。煅烧金属过滤器的过滤等级应在1.0μm以下。过滤后，煅烧后的金属过滤器可以进行反冲洗或化学洗涤，然后再使用。双酚优选为双酚A.

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