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1. 发明授权

US06342555B2 Process for depolymerizing nylon-containing waste to form caprolactam 有权
标题翻译：用于解聚含尼龙的废物以形成己内酰胺的方法
公开(公告)号：US06342555B2
公开(公告)日：2002-01-29
申请号：US09759444
申请日：2001-01-12
申请人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
发明人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
IPC分类号： C08K326
CPC分类号： C07D201/12
摘要： The present invention provides an efficient process for the recovery of caprolactam from polycaprolactam-containing waste material. The present process for depolymerizing multi-component waste material comprising polycaprolactam and non-polycaprolactam components to form caprolactam comprises the step of: in the absence of added catalyst, contacting the multi-component waste material with superheated steam at a temperature of about 250° C. to about 400° C. and at a pressure within the range of about 1 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed.
摘要翻译：本发明提供了一种从含有聚己内酰胺的废料中回收己内酰胺的有效方法。用于解聚包含聚己内酰胺和非聚己内酰胺组分以形成己内酰胺的多组分废料的本方法包括以下步骤：在不加入催化剂的情况下，将多组分废料与过热蒸汽在约250℃的温度下接触约400℃，并且在约1atm至约100atm范围内的压力下，并且基本上小于在其中形成含己内酰胺的蒸汽流的温度下的饱和蒸汽压。

2. 发明授权

US5869654A Process for depolymerizing polycaprolactam processing waste to form caprolactam 失效
标题翻译：解聚聚己内酰胺处理废物形成己内酰胺的方法
公开(公告)号：US5869654A
公开(公告)日：1999-02-09
申请号：US844539
申请日：1997-04-18
申请人： Stylianos Sifniades , Alan Bart Levy
发明人： Stylianos Sifniades , Alan Bart Levy
IPC分类号： C07D201/12 , C07D201/16
CPC分类号： C07D201/16 , C07D201/12
摘要： The present invention provides an improved process for the recovery of caprolactam from polycaprolactam processing waste. The present process for depolymerizing polycaprolactam waste to form caprolactam comprises the step of: in the absence of added catalyst, contacting the polycaprolactam waste with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1.5 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed.The formed caprolactam may then be used in the production of engineered resins and fibers.
摘要翻译：本发明提供了从聚己内酰胺处理废物中回收己内酰胺的改进方法。用于解聚聚己内酰胺废物形成己内酰胺的本发明方法包括以下步骤：在不加入催化剂的情况下，在约250℃至约400℃的温度和范围为约1.5atm至约100atm，并且在其中形成含己内酰胺的蒸汽流的温度下，基本上小于饱和的水蒸气压。然后，所形成的己内酰胺可以用于工程化树脂和纤维的生产。

3. 发明授权

US5932724A Process for depolymerizing nylon-containing waste to form caprolactam 失效
标题翻译：用于解聚含尼龙的废物以形成己内酰胺的方法
公开(公告)号：US5932724A
公开(公告)日：1999-08-03
申请号：US843502
申请日：1997-04-16
申请人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
发明人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
IPC分类号： C07D201/12
CPC分类号： C07D201/12
摘要： The present invention provides an efficient process for the recovery of caprolactam from polycaprolactam-containing waste material. The present process for depolymerizing multi-component waste material comprising polycaprolactam and non-polycaprolactam components to form caprolactam comprises the step of: in the absence of added catalyst, contacting the multi-component waste material with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed. The formed caprolactam may then be used in the production of engineered resins and fibers.
摘要翻译：本发明提供了一种从含有聚己内酰胺的废料中回收己内酰胺的有效方法。用于解聚包含聚己内酰胺和非聚己内酰胺组分以形成己内酰胺的多组分废料的本方法包括以下步骤：在不加入催化剂的情况下，将多组分废料与过热蒸汽在约250℃的温度下接触约400℃，并且在约1atm至约100atm范围内的压力下，并且基本上小于在其中形成含己内酰胺的蒸气流的温度下的饱和蒸气压。然后，所形成的己内酰胺可以用于工程化树脂和纤维的生产。

4. 发明授权

US5948908A Process for depolymerizing polycaprolactam processing waste to form caprolactam 失效
标题翻译：解聚聚己内酰胺处理废物形成己内酰胺的方法
公开(公告)号：US5948908A
公开(公告)日：1999-09-07
申请号：US617448
申请日：1996-03-18
申请人： Stylianos Sifniades , Alan Bart Levy
发明人： Stylianos Sifniades , Alan Bart Levy
IPC分类号： C07D201/12 , C07D201/16
CPC分类号： C07D201/16 , C07D201/12
摘要： The present invention provides an improved process for the recovery of caprolactam from polycaprolactam processing waste. The present process for depolymerizing polycaprolactam waste to form caprolactam comprises the step of: in the absence of added catalyst, contacting the polycaprolactam waste with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1.5 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed.
摘要翻译：本发明提供了从聚己内酰胺处理废物中回收己内酰胺的改进方法。用于解聚聚己内酰胺废物形成己内酰胺的本发明方法包括以下步骤：在不加入催化剂的情况下，在约250℃至约400℃的温度和范围为约1.5atm至约100atm，并且在其中形成含己内酰胺的蒸汽流的温度下，基本上小于饱和的水蒸气压。

5. 发明授权

US5929234A Process for depolymerizing nylon-containing whole carpet to form caprolactam 失效
标题翻译：用于解聚含尼龙的全部地毯以形成己内酰胺的方法
公开(公告)号：US5929234A
公开(公告)日：1999-07-27
申请号：US82842
申请日：1998-05-21
申请人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
发明人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
IPC分类号： C07D201/12
CPC分类号： C07D201/12
摘要： The present invention provides an efficient process for the recovery of caprolactam from polycaprolactam-containing waste material. The present process for depolymerizing multi-component waste material comprising polycaprolactam and non-polycaprolactam components to form caprolactam comprises the step of: in the absence of added catalyst, contacting the multi-component waste material with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed. The formed caprolactam may then be used in the production of engineered resins and fibers.
摘要翻译：本发明提供了一种从含有聚己内酰胺的废料中回收己内酰胺的有效方法。用于解聚包含聚己内酰胺和非聚己内酰胺组分以形成己内酰胺的多组分废料的本方法包括以下步骤：在不加入催化剂的情况下，将多组分废料与过热蒸汽在约250℃的温度下接触约400℃，并且在约1atm至约100atm范围内的压力下，并且基本上小于在其中形成含己内酰胺的蒸气流的温度下的饱和蒸气压。然后，所形成的己内酰胺可以用于工程化树脂和纤维的生产。

6. 发明授权

US5681952A Process for depolymerizing nylon-containing waste to form caprolactam 失效
标题翻译：用于解聚含尼龙的废物以形成己内酰胺的方法
公开(公告)号：US5681952A
公开(公告)日：1997-10-28
申请号：US569640
申请日：1995-12-08
申请人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
发明人： Stylianos Sifniades , Alan Bart Levy , Jan Agnes Jozef Hendrix
IPC分类号： C07D201/12
CPC分类号： C07D201/12
摘要： The present invention provides an efficient process for the recovery of caprolactam from polycaprolactam-containing waste material. The present process for depolymerizing multi-component waste material comprising polycaprolactam and non-polycaprolactam components to form caprolactam comprises the step of: in the absence of added catalyst, contacting the multi-component waste material with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam- containing vapor stream is formed. The formed caprolactam may then be used in the production of engineered resins and fibers.
摘要翻译：本发明提供了一种从含有聚己内酰胺的废料中回收己内酰胺的有效方法。用于解聚包含聚己内酰胺和非聚己内酰胺组分以形成己内酰胺的多组分废料的本方法包括以下步骤：在不加入催化剂的情况下，将多组分废料与过热蒸汽在约250℃的温度下接触约400℃，在约1大气压至约100大气压的范围内的压力，并且在其中形成含己内酰胺的蒸汽流的温度下，基本上小于饱和的水蒸气压。然后，所形成的己内酰胺可以用于工程化树脂和纤维的生产。

7. 发明授权

US4402917A Extraction of uranium from phosphoric acid using supported extractants 失效
标题翻译：使用支持的萃取剂从磷酸提取铀
公开(公告)号：US4402917A
公开(公告)日：1983-09-06
申请号：US184589
申请日：1980-09-05
申请人： Theodore Largman , Stylianos Sifniades
发明人： Theodore Largman , Stylianos Sifniades
IPC分类号： C22B60/02 , C01G43/00
CPC分类号： C22B60/0265 , C22B60/0243
摘要： Uranium is extracted from phosphoric acid with organophosphorus extractants supported or impregnated on polymeric resins, and especially macroreticular resins. Suitable extractants include mono and dialkylphenyl esters of phosphoric acid. Uranium may be stripped from the supported or impregnated resins with hotter or more concentrated phosphoric acid, optionally with oxidation to hexavalent form, or with aqueous fluoride solutions.
摘要翻译：用有机磷萃取剂从磷酸提取铀，其中有机磷萃取剂负载或浸渍在聚合物树脂上，特别是大网络树脂。合适的萃取剂包括磷酸的单和二烷基苯基酯。铀可以用较热或更浓缩的磷酸，任选氧化成六价形式或用氟化物水溶液从负载或浸渍的树脂中剥离。

8. 发明授权

US4358618A Decomposition of cumene oxidation product 失效
标题翻译：异丙苯氧化产物的分解
公开(公告)号：US4358618A
公开(公告)日：1982-11-09
申请号：US276233
申请日：1981-06-22
申请人： Stylianos Sifniades , Allen A. Tunick , Fred W. Koff
发明人： Stylianos Sifniades , Allen A. Tunick , Fred W. Koff
IPC分类号： C07C1/00 , C07C1/20 , C07C15/44 , C07C15/46 , C07C27/00 , C07C29/132 , C07C37/08 , C07C39/04 , C07C45/00 , C07C45/51 , C07C45/53 , C07C49/08 , C07C67/00 , C07C409/16
CPC分类号： C07C409/16 , C07C1/20 , C07C37/08 , C07C407/00 , C07C45/517 , C07C45/53 , Y02P20/52
摘要： A cumene oxidation product containing cumene hydroperoxide (CHP) and dimethylphenylcarbinol (DMPC) is decomposed with acid catalyst in a first step at mild temperatures that lowers the CHP concentration to about 0.5-5% and converts most of the DMPC to dicumylperoxide (DCP). In a second step at mild temperatures the CHP concentration is lowered below 0.4%. In a third step the DCP is decomposed at a higher temperature for a short time to alpha-methylstyrene (AMS), phenol and acetone, with any remaining DMPC also converted to AMS. The DCP concentration is monitored during the third step, and the reaction is stopped by cooling when about 0.5-5% of the DCP remains undecomposed so as to maximize AMS yield.
摘要翻译：含有枯烯氢过氧化物（CHP）和二甲基苯甲醇（DMPC）的枯烯氧化产物在酸性催化剂中在温和的温度下分解，将CHP浓度降至约0.5-5％，并将大部分DMPC转化为过氧化二异丙苯（DCP）。在温和温度下的第二步，CHP浓度降低到0.4％以下。在第三步中，DCP在较短时间内分解成α-甲基苯乙烯（AMS），苯酚和丙酮，任何剩余的DMPC也转化为AMS。在第三步骤期间监测DCP浓度，并且当约0.5-5％的DCP保持未分解时，冷却停止反应，以使AMS产率最大化。

9. 发明授权

US4316877A Extraction of uranium values from phosphoric acid 失效
标题翻译：从磷酸提取铀值
公开(公告)号：US4316877A
公开(公告)日：1982-02-23
申请号：US96853
申请日：1979-11-23
申请人： Allen A. Tunick , Theodore Largman , Stylianos Sifniades
发明人： Allen A. Tunick , Theodore Largman , Stylianos Sifniades
IPC分类号： C22B60/02 , C01G43/00 , C01B25/238
CPC分类号： C22B60/026 , C07F9/3843 , C07F9/386
摘要： Aqueous phosphoric acid solutions containing uranium values are contacted with an organic solution of a mixture of organophosphorus compounds produced from a carboxylic acid and PCl.sub.3 in the presence of water or from corresponding acid halides or anhydrides and phosphorous acid to extract the uranium values. The organophorus compounds generally include an alkane-1,1,2-triphosphonic acid or a 1-hydroxy-1,1-alkanediphosphonic acid or both, which differ from common organophosphorus extractants in having a carbon-phosphorus bond. The extraction has high distribution coefficients even when the phosphoric acid solution is 10 molar or more and even when the extraction is conducted at elevated temperatures such as 60.degree. C. While distribution coefficients in the presence of iron are higher for tetravalent uranium, efficient extraction can be conducted of hexavalent uranium as well. Uranium values are recovered from the organic solution by contacting it with about 40-70 weight percent aqueous HF and separating a uranium-rich precipitate from the solution.
摘要翻译：含有铀值的磷酸水溶液与水或PCA3的有机磷化合物的混合物在水或相应的酰卤，酸酐和亚磷酸的存在下与有机溶液接触以提取铀值。有机体化合物通常包括与具有碳 - 磷键的普通有机磷萃取剂不同的烷烃-1,1,2-三膦酸或1-羟基-1,1-二烷基膦酸或二者。即使当磷酸溶液为10摩尔浓度以上，即使在60℃升高的温度下进行萃取，萃取也具有高分散系数。虽然四价铀中铁的分布系数较高，但有效萃取可以也可以使用六价铀。通过使其与约40-70重量％的HF水溶液接触并从溶液中分离出富含铀的沉淀物，从有机溶液中回收铀值。

10. 发明授权

US5066373A Monitoring pH in phenol acetone 失效
标题翻译：监测苯酚丙酮中的pH
公开(公告)号：US5066373A
公开(公告)日：1991-11-19
申请号：US590251
申请日：1990-09-28
申请人： Alan B. Levy , Stylianos Sifniades , Lloyd C. Kent , Dominick Frollini, Jr.
发明人： Alan B. Levy , Stylianos Sifniades , Lloyd C. Kent , Dominick Frollini, Jr.
IPC分类号： G01N27/403 , G01N27/416
CPC分类号： G01N27/4166
摘要： Monitoring acidity at the ppm level in phenol-acetone-cumene process streams on a continuous basis is accomplished with a standard hydrogen electrode and a double-junction reference electrode with an external body solution comprising phenol, acetone, water, and a tetraalkyl- or tetraarylammonium salt, which provide a time invariant voltage without the necessity of adding any external solvent to the process stream. Phenol/acetone ratios can be varied from 1:10 to 10:1 which encompass the 1:1 ratio produced by the phenol-acetone process. A direct correlation of the electrode potential with the acidity of the medium is obtained. With the aqueous mixture isolated by a low flow ceramic junction from the process stream, no contamination of the process stream occurs.
摘要翻译：在苯酚 - 丙酮 - 异丙基苯工艺流中连续测量ppm水平的酸度用标准氢电极和具有包含苯酚，丙酮，水和四烷基 - 或四芳基铵的外部体溶液的双连接参比电极实现盐，其提供时间不变的电压，而不需要向工艺流中加入任何外部溶剂。苯酚/丙酮比例可以从1:10到10:1变化，这包括由苯酚 - 丙酮过程产生的1：1的比例。获得电极电位与介质酸度的直接相关性。在通过来自工艺流的低流动陶瓷结分离的含水混合物的情况下，不会发生工艺流的污染。

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