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公开(公告)号：US5100602A
公开(公告)日：1992-03-31
申请号：US646113
申请日：1991-01-28
申请人： James Day , Bernard P. Bewlay
发明人： James Day , Bernard P. Bewlay
CPC分类号： B30B15/302 , B22F3/004
摘要： A method and apparatus for filling generally cylindrical molds with powder particles is disclosed. A stream of powder particles is fed into a mold, and the powder particles are compacted in spirally formed layers so that the particles are compacted continuously in localized adjacent areas. The powder filling apparatus is comprised of a blade means configured to direct powder particles to spread evenly in the mold and urge the powder particles to compact while the blade means is rotated about an axis. A shaft is attached to the blade means for rotation of the blade means about the axis. A chuck means is slideably mounted on the shaft means through an axial channel, the chuck means being configured for applying force to the shaft while permitting movement of the shaft axially through the channel. A drive means is operatively connected to the chuck means for applying force to rotate the chuck about the axis. The powder particles are filled to a high and uniform fill density by the powder filling method and apparatus of this invention.
摘要翻译： 公开了一种用粉末颗粒填充大致圆柱形模具的方法和装置。 将一粒粉末颗粒进料到模具中，并将粉末颗粒压缩成螺旋形成的层，使得颗粒在局部相邻区域中连续压实。 粉末填充装置包括构造成引导粉末颗粒均匀地分布在模具中的叶片装置，并且当叶片装置围绕轴旋转时促使粉末颗粒紧凑。 轴连接到刀片装置，用于使刀片装置围绕轴线旋转。 卡盘装置通过轴向通道可滑动地安装在轴装置上，卡盘装置构造成用于向轴施加力，同时允许轴轴向移动通过通道。 驱动装置可操作地连接到卡盘装置，用于施加力以使卡盘围绕轴线旋转。 通过本发明的粉末填充方法和装置将粉末颗粒填充到高均匀的填充密度。
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公开(公告)号：US06960641B2
公开(公告)日：2005-11-01
申请号：US10743241
申请日：2003-12-22
申请人： Gregory Allen O'Neil , James Day , Daniel Joseph Brunelle , Joseph Anthony Suriano , Patrick Joseph McCloskey , Paul Michael Smigelski, Jr.
发明人： Gregory Allen O'Neil , James Day , Daniel Joseph Brunelle , Joseph Anthony Suriano , Patrick Joseph McCloskey , Paul Michael Smigelski, Jr.
摘要： A method of preparing block copolymers by solid state polymerization is described. A mixture of a partially crystalline polycarbonate having activated terminal aryloxy groups, for example terminal methyl salicyl groups, when heated together with an oligomeric polyester having reactive terminal hydroxy groups under solid state polymerization conditions affords block copolymers. The activated terminal aryloxy groups play a key role in preserving the block lengths of the starting materials. A control sample in which the partially crystalline polycarbonate lacks activated terminal aryloxy groups, for example polycarbonates substituted by phenol, affords a much lower molecular weight, more highly randomized copolymer product. The product block copolymers are useful as “weatherable” plastic materials.
摘要翻译： 描述了通过固态聚合制备嵌段共聚物的方法。 当在固态聚合条件下与具有反应性末端羟基的低聚聚酯一起加热时，具有活化的末端芳氧基的部分结晶的聚碳酸酯，例如末端甲基水杨酸酯的混合物得到嵌段共聚物。 活化的末端芳氧基在保留原料的块长度方面起关键作用。 其中部分结晶聚碳酸酯缺乏活化的末端芳氧基的对照样品，例如被苯酚取代的聚碳酸酯，得到低得多的分子量，更高度随机的共聚物产物。 产品嵌段共聚物可用作“耐候性”塑料材料。
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33.发明授权公开(公告)号：US06887969B2
公开(公告)日：2005-05-03
申请号：US10264640
申请日：2002-10-04
CPC分类号： C08G64/307 , C08G64/205
摘要： Usually, polycarbonate polymerization is limited by the rate at which inhibitory byproducts, such as phenol and salicylate, can be removed from the reaction. To facilitate the removal of volatile reaction byproducts from the reaction as polymerization occurs, the present invention provides a spray mist reactor. The formation of a spray mist polymerization reaction allows for the creation of an enormous surface area for exchange of volatile byproducts. The present invention is applicable to polymerization of polycarbonate and its copolymers starting with monomers or oligomers. The invention may be used to increase throughput and minimize initial investment for a give melt process, especially the fast reacting bis(methylsalicylate) carbonate process.
摘要翻译： 通常，聚碳酸酯聚合受限于可以从反应中除去抑制性副产物如苯酚和水杨酸酯的速率。 为了便于在发生聚合反应时从反应中除去挥发性反应副产物，本发明提供一种喷雾反应器。 喷雾聚合反应的形成允许产生巨大的表面积以交换挥发性副产物。 本发明适用于从单体或低聚物开始的聚碳酸酯及其共聚物的聚合。 本发明可以用于增加产量并最小化熔融方法的初始投资，特别是快速反应双（甲基水杨酸甲酯）碳酸酯方法。
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公开(公告)号：US20050015189A1
公开(公告)日：2005-01-20
申请号：US10732576
申请日：2003-12-10
申请人： John Posselius , James Day
发明人： John Posselius , James Day
CPC分类号： A01B79/005
摘要： An apparatus and method for automatically swinging a center pivot, towed implement from one side to the other side of a farm machine. The apparatus includes a Global Positioning System for locating the farm machine and sensors and remote controls for various functions of the machine to check and change the status of each machine function. An on-board computer uses the sensors and the GPS and a previously installed program to automatically determine what portion of the field has been worked and to direct the farm machine to swing the implement from one side to the other as required.
摘要翻译： 一种用于自动摆动中心枢轴的装置和方法，拖拉式工具从农机的一侧到另一侧。 该装置包括用于定位农机的传感器和遥控器的全球定位系统，用于机器的各种功能，以检查和改变每个机器功能的状态。 车载计算机使用传感器和GPS以及先前安装的程序来自动确定现场的哪些部分已经工作，并根据需要将农机从一侧向另一侧摆动。
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公开(公告)号：US06790929B2
公开(公告)日：2004-09-14
申请号：US10389009
申请日：2003-03-17
申请人： Norberto Silvi , Mark Howard Giammattei , Patrick Joseph McCloskey , Alberto Nisoli , James Day , Narayan Ramesh , Paul Michael Smigelski, Jr. , Paul Russell Wilson
发明人： Norberto Silvi , Mark Howard Giammattei , Patrick Joseph McCloskey , Alberto Nisoli , James Day , Narayan Ramesh , Paul Michael Smigelski, Jr. , Paul Russell Wilson
IPC分类号： C08G6400
CPC分类号： B29C47/0004 , B29C47/0009 , B29C47/60 , B29C47/76 , B29C47/767 , B29C67/246 , B29K2069/00 , C08G64/081 , C08G64/14 , C08G64/205 , C08G64/307
摘要： This invention relates to an extrusion method preparing polycarbonates from a solution of an oligomeric polycarbonate. A mixture of bis(methyl salicyl)carbonate (BMSC), BPA and a transesterification catalyst are first equilibrated at moderate temperatures to provide a solution of polycarbonate oligomer in methyl salicylate. The solution is then fed to a devolatilizing extruder, where the polymerization reaction is completed and the methyl salicylate solvent is removed. The solution comprising the oligomeric polycarbonate can also be pre-heated under pressure to a temperature above the boiling point of methyl salicylate and subsequently fed to a devolatilizing extruder equipped for rapid flashing off the solvent. The method provides polycarbonate with greater efficiency than the corresponding process in which unreacted monomers are fed to the extruder. Additionally, the method of the invention does not require the isolation of a precursor polycarbonate comprising ester-substituted phenoxy terminal groups.
摘要翻译： 本发明涉及从低聚聚碳酸酯溶液制备聚碳酸酯的挤压方法。 首先在中等温度下平衡双（甲基水杨酸）碳酸酯（BMSC），BPA和酯交换催化剂的混合物，以提供聚碳酸酯低聚物在水杨酸甲酯中的溶液。 然后将溶液进料到脱挥发分挤出机中，其中聚合反应完成并除去水杨酸甲酯溶剂。 包含低聚物聚碳酸酯的溶液也可以在压力下预加热到高于水杨酸甲酯沸点的温度，随后进料到脱挥发分的挤出机中，以便迅速地从溶剂中闪蒸。 该方法提供聚碳酸酯比未反应的单体进料到挤出机的相应方法具有更高的效率。 另外，本发明的方法不需要分离包含酯取代的苯氧基末端基团的前体聚碳酸酯。
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36.发明授权Use of filter to improve the dielectric breakdown strength of x-ray tube coating 失效使用过滤器来提高x射线管涂层的介电击穿强度公开(公告)号：US06604856B2
公开(公告)日：2003-08-12
申请号：US08944773
申请日：1997-10-06
IPC分类号： H01J3510
CPC分类号： H05G1/04
摘要： The useful life of x-ray tubes is extended by filtering metal particles and other decomposition products out of the coolant fluid by filter means permanently included in the closed loop cooling fluid circuit which also includes pump means and heat exchange means.
摘要翻译： 通过永久地包括在闭路冷却流体回路中的过滤器装置将冷却剂流体中的金属颗粒和其它分解产物过滤出来，从而延长了X射线管的使用寿命，该循环冷却流体回路还包括泵装置和热交换装置。
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公开(公告)号：US06518391B1
公开(公告)日：2003-02-11
申请号：US09911505
申请日：2001-07-24
IPC分类号： C08G6400
CPC分类号： C08G64/307 , C08G64/06
摘要： Solid state polymerization of partially crystalline polycarbonate oligomers bearing ester-substituted terminal groups occurs at useful reaction rates despite their high level of endcapping. Partially crystalline polycarbonate oligomers having ester substituted terminal groups may be obtained in a single step by reaction of an ester substituted diaryl carbonate such as bis-methyl salicyl carbonate with a dihydroxy aromatic compound such as bisphenol A in the presence of a transesterification catalyst such as sodium hydroxide. Alternatively, amorphous oligomeric polycarbonates incorporating ester substituted endgroups may be obtained through careful control of the melt reaction conditions. The amorphous oligomeric polycarbonates are crystallized upon exposure to solvent vapor and subsequently undergo solid state polymerization at synthetically useful reaction rates.
摘要翻译： 带有酯取代的端基的部分结晶的聚碳酸酯低聚物的固态聚合以有效的反应速率发生，尽管它们具有高水平的封端。 具有酯取代的末端基的部分结晶的聚碳酸酯低聚物可以通过酯交换催化剂如钠的存在下，酯取代的碳酸二碳酸酯如碳酸双甲基酯与二羟基芳族化合物如双酚A的反应在一个步骤中获得 氢氧化物。 或者，可以通过仔细控制熔融反应条件来获得引入酯取代的端基的无定形低聚聚碳酸酯。 无定形低聚聚碳酸酯在暴露于溶剂蒸气下结晶，随后在合成有用的反应速率下进行固态聚合。
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公开(公告)号：US06506871B1
公开(公告)日：2003-01-14
申请号：US10167903
申请日：2002-06-12
IPC分类号： C08G6400
CPC分类号： C08G64/307
摘要： Extrusion of a mixture of an ester-substituted diaryl carbonate, such as bis(methyl salicyl) carbonate, a dihydroxy aromatic compound such as bisphenol A and a transesterification catalyst such as tetrabutylphosphonium acetate (TBPA) affords polycarbonate having a weight average molecular weight of greater than 20,000 daltons. The extruder is equipped with one or more vacuum vents to remove by-product ester-substituted phenol. Similarly, a precursor polycarbonate having ester-substituted phenoxy endgroups, for example methyl salicyl endgroups, when subjected to extrusion affords a polycarbonate having a significantly increased molecular weight relative to the precursor polycarbonate. The reaction to form a higher molecular weight polycarbonate may be catalyzed by residual transesterification catalyst present in the precursor polycarbonate, or by a combination of any residual catalyst and an additional catalyst such as TBPA introduced in the extrusion step. Fries rearrangement products are not observed in the product polycarbonates.
摘要翻译： 碳酸二（甲基水杨基）酯，二羟基芳族化合物如双酚A和酯交换催化剂如四丁基鏻乙酸酯（TBPA）的酯取代的二芳基碳酸酯的混合物的挤出得到重均分子量更大的聚碳酸酯 超过20,000道尔顿。 挤出机配备有一个或多个真空通风口以除去副产物酯取代的苯酚。 类似地，具有酯取代的苯氧基端基的前体聚碳酸酯，例如甲基水杨基端基，当进行挤出时，得到相对于前体聚碳酸酯具有显着增加的分子量的聚碳酸酯。 形成较高分子量聚碳酸酯的反应可以通过存在于前体聚碳酸酯中的残留酯交换催化剂，或者通过任何残余催化剂和另外的催化剂如在挤出步骤中引入的TBPA的组合来催化。 在产品聚碳酸酯中没有观察到薯条重排产物。
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公开(公告)号：US06248858B1
公开(公告)日：2001-06-19
申请号：US09192350
申请日：1998-11-16
IPC分类号： C08G6400
摘要： Polymerization of polycarbonates is performed by first enhancing the crystallinity of a precursor polycarbonate, such as an oligomer, by contact in pellet form with an alkanol in the liquid or vapor state as non-solvent, and then conducting solid state polymerization in a stream of inert gas such as nitrogen. The solid state polymerization operation includes a stage of heating at a constant temperature in the range of about 215-225° C., optionally combined with a first heating stage at a constant temperature in the range of about 180-190° C. The method is adaptable to continuous operation and produces a polycarbonate having a number average molecular weight, as determined by gel permeation chromatography relative to polystyrene, of at least 15,000.
摘要翻译： 聚碳酸酯的聚合通过首先通过以颗粒形式与液体或蒸气状态的链烷醇作为非溶剂接触来提高前体聚碳酸酯如低聚物的结晶度，然后在惰性气流中进行固态聚合 气体如氮气。 固态聚合操作包括在约215-225℃的恒定温度下加热的阶段，任选地在约180-190℃的恒定温度下与第一加热阶段组合。方法 适用于连续操作，并且通过凝胶渗透色谱法相对于聚苯乙烯产生数均分子量为至少15,000的聚碳酸酯。
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公开(公告)号：US5288447A
公开(公告)日：1994-02-22
申请号：US20968
申请日：1993-02-22
申请人： James Day
发明人： James Day
CPC分类号： B29C43/18 , B29C70/72 , B29C33/02 , B29K2503/06 , B29K2995/0008 , Y10S264/58
摘要： A plastic binder is milled to a powder, preferably having a particle size equal to the mean size of flakes of permanent magnet material, and dry mixed with the magnetic flakes. A molding fixture is heated to a temperature higher than that of the melting point of the plastic binder. A rotor core, having a rounded upper edge for molding a thin cylindrical magnet thereon, of solid or laminated soft magnetic material is prepared and placed in the molding fixture and brought up to the molding temperature. The mixture is poured in measured amounts into the upper chamber of the hot molding fixture and then compressed and melted. The fluid mixture is transferred into a molding cavity surrounding the rotor core in the lower chamber and cooled. After cooling, the finished permanent magnet rotor is ejected. Advantageously, by this method, the proportion of magnetic material to plastic may be increased to approximately 80%/20% magnetic material to plastic by volume, and the magnets may be made thinner.
摘要翻译： 将塑料粘合剂研磨成粉末，优选具有等于永磁材料薄片的平均尺寸的粒度，并与磁性薄片干混。 将成型夹具加热到比塑料粘合剂的熔点高的温度。 制备具有固体或层压软磁材料的用于模制其上的薄圆柱形磁体的圆形上边缘的转子芯，并将其放置在模制夹具中并达到模制温度。 将混合物以测量的量倒入热成型固定装置的上腔室中，然后压缩并熔化。 将流体混合物转移到围绕下室中的转子芯的模制腔中并冷却。 冷却后，完成永久磁铁转子的喷射。 有利地，通过这种方法，磁性材料与塑料的比例可以增加到塑料的大约80％/ 20％的磁性材料，并且可以使磁体变薄。
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