专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US3974126A Process and apparatus for continuous production of polycarbonates 失效
标题翻译：用于连续生产聚碳酸酯的方法和设备
公开(公告)号：US3974126A
公开(公告)日：1976-08-10
申请号：US482837
申请日：1974-06-25
申请人： Yoshihiro Narita , Hideo Konuma , Hiroshi Nishitani , Norio Komori , Katsuharu Ogishima
发明人： Yoshihiro Narita , Hideo Konuma , Hiroshi Nishitani , Norio Komori , Katsuharu Ogishima
IPC分类号： C08G63/00 , B01J14/00 , B01J19/18 , B01J19/24 , C08G64/20 , C08G64/22 , C08G64/24 , C08G63/62
CPC分类号： C08G64/205 , B01J19/1862 , B01J19/2425 , C08G64/24 , B01J2219/00078
摘要： A heat resistant and impact resistant polycarbonate having a narrow distribution of molecular weight is continuously produced by reacting chloroformate ester, prepared in advance by reacting alkaline solution of dioxy compound in a turbulent flow of the two solutions while cooling and subsequently reacting the mixture concurrently in a laminar flow after the viscosity of the mixture has become significant.
摘要翻译：具有窄分子量分布的耐热和耐冲击的聚碳酸酯通过使氯甲酸酯在预先通过二氧化合物的碱性溶液在两种溶液的湍流中反应而制备，同时冷却并随后在混合物中同时反应而连续制备在混合物的粘度变得显着之后的层流。

2. 发明授权

US5635587A Process for manufacturing polyarylene sulfide 失效
标题翻译：制备聚芳硫醚的方法
公开(公告)号：US5635587A
公开(公告)日：1997-06-03
申请号：US357405
申请日：1994-12-16
申请人： Yoshinari Koyama , Norio Ogata , Hiroshi Nishitani
发明人： Yoshinari Koyama , Norio Ogata , Hiroshi Nishitani
IPC分类号： C01D3/14 , C01D3/18 , C08G75/02 , C08G75/00
CPC分类号： C01D3/18 , C01D3/14 , C08G75/025 , C08G75/0254 , C08G75/0259 , C08G75/0272 , C08G75/0281
摘要： A process for efficiently manufacturing high purity polyarylene sulfide. The process comprises feeding a liquid or gaseous sulfur compound (e.g. hydrogen sulfide) to a mixture comprising lithium hydroxide and a non-lithium hydroxide solid compound (e.g. alkali metal chloride or alkaline earth metal chloride) in a non-protonic organic solvent (e.g. N-methyl-2-pyrrolidone), separating the alkali metal chloride or alkaline earth metal chloride, adjusting the sulfur content of the reaction mixture, feeding a dihalogeno aromatic compound e.g. p-dichlorobenzene) to effect a polycondensation reaction, and adding of an alkali metal hydroxide (e.g. sodium hydroxide) to recover lithium ion.
摘要翻译：一种有效制造高纯度聚芳硫醚的方法。该方法包括在包含氢氧化锂和非氢氧化锂固体化合物（例如碱金属氯化物或碱土金属氯化物）的混合物中将液体或气态硫化合物（例如硫化氢）供入非质子有机溶剂（例如N - 甲基-2-吡咯烷酮），分离碱金属氯化物或碱土金属氯化物，调节反应混合物的硫含量，加入二卤代芳族化合物，例如对二氯苯）进行缩聚反应，加入碱金属氢氧化物（如氢氧化钠）回收锂离子。

3. 发明授权

US4608150A Pitch material for carbonaceous body and a method for the preparation thereof 失效
标题翻译：用于碳体的沥青材料及其制备方法
公开(公告)号：US4608150A
公开(公告)日：1986-08-26
申请号：US710021
申请日：1985-03-11
申请人： Masaaki Itoi , Masakatsu Ohta , Taizo Sugioka , Kunio Yoshihara , Hiroshi Nishitani
发明人： Masaaki Itoi , Masakatsu Ohta , Taizo Sugioka , Kunio Yoshihara , Hiroshi Nishitani
IPC分类号： C01B31/00 , C10C3/00 , C10C3/02 , C10C3/10 , D01F9/145 , D01F9/155 , C10C1/00
CPC分类号： D01F9/145 , C10C3/002
摘要： The invention provides a novel pitch material useful as a base material of carbon fibers having excellent mechanical properties and characterized by a unique combination of several property parameters including the content of the optically anisotropic phase of at least 80%, a content of the pyridine-insoluble matter in the range from 30 to 70% by weight, a number average molecular weight in the range from 1000 to 1400 and a softening point in the range from 330.degree. to 380.degree. C. Such a pitch material is obtained from a starting pitch of a petroleum-based residual oil freed from light oily matter through a two-step heat treatment, of which the first step is performed at 400.degree. to 460.degree. C. under a pressure of 5 to 50 mmHg and the second step is performed at 450.degree. to 550.degree. C. for 0.2 to 30 minutes under a pressure of 0.1 to 5 mmHg. The advantages obtained by use of a film evaporator in the above mentioned heat treatment are described. The time taken for the infusibilization treatment of the pitch filaments is greatly decreased when the filaments were prepared from the inventive pitch material by spinning in comparison with conventional pitches and the spinning temperature can also be relatively low.
摘要翻译：本发明提供了一种新颖的沥青材料，其可用作具有优异机械性能的碳纤维的基础材料，并且特征在于几个性质参数的独特组合，包括至少80％的光学各向异性相的含量，不溶于吡啶的含量物质在30至70重量％的范围内，数均分子量在1000至1400，软化点在330至380℃的范围内。这种沥青材料从起始间距通过两步热处理从轻质油状物中除去石油基残余油，其中第一步在400-460℃下在5至50mmHg的压力下进行，第二步在450℃ 在0.1〜5mmHg的压力下，在550℃下进行0.2〜30分钟。描述在上述热处理中使用薄膜蒸发器获得的优点。当采用本发明的沥青材料通过与传统的间距相比进行纺丝制备长丝时，沥青丝的熔融处理所花费的时间大大降低，并且纺丝温度也可以相对较低。

4. 发明授权

US3949110A Specially formed shrinkable tube, its manufacturing method and the articles using such tube 失效
标题翻译：特殊形状的收缩管，其制造方法和使用这种管的制品
公开(公告)号：US3949110A
公开(公告)日：1976-04-06
申请号：US467746
申请日：1974-05-07
申请人： Toyoshi Nakajima , Keiichi Kojima , Hiroshi Nishitani , Toshifumi Inui
发明人： Toyoshi Nakajima , Keiichi Kojima , Hiroshi Nishitani , Toshifumi Inui
IPC分类号： B29C47/00 , B29C61/06 , B29C61/08 , B29C65/02 , B29C65/18 , B29C67/00 , H02G15/04 , F16L47/00
CPC分类号： B29C67/0014 , B29C47/0023 , B29C61/0608 , B29C61/08 , B29C65/028 , B29C65/18 , B29C66/1122 , B29C66/43 , B29C66/4322 , B29C66/5326 , B29C66/73715 , B29C66/73921 , B29C66/8181 , B29C66/83411 , B29C66/83511 , B29C67/00 , B29C47/0026 , B29C47/003 , B29L2023/005 , B29L2031/56 , Y10S174/08 , Y10T428/1331
摘要： A method of manufacturing heat shrinkable tubing having one portion thereof in the form of a single tube and the remaining portion thereof in the form of plural tubes. The heat shrinkable tubing is manufactured by extruding a thermoplastic tube and then longitudinally sealing the tube periodically with applied pressure while the tube is heated to form predetermined plural tube lengths. The tube is then subjected to irradiation, heated to at least the softening temperature of the material of the tube and it is then partially inflated and thermoset by cooling to impart heat shrinkable properties to the tube. The heat shrinkable tube so formed is then periodically cut to form a plurality of heat shrinkable tube sections which each consist of a single tube portion and a remaining plural tube portion.
摘要翻译：一种制造热收缩管的方法，其一部分为单管形式，其余部分呈多管形式。热收缩管通过挤出热塑性管制造，然后在施加压力下周期性地纵向密封管，同时加热管以形成预定的多个管长度。然后对管进行照射，加热到至少软管材料的软化温度，然后将其部分膨胀并通过冷却热固化以赋予管热收缩性能。然后，如此形成的热收缩管被周期性地切割以形成多个热收缩管部分，每个管部分由单个管部分和剩余的多个管部分组成。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式