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1.发明授权
公开(公告)号：US5543495A
公开(公告)日：1996-08-06
申请号：US207733
申请日：1994-03-08
申请人： Colin Anolick , Gregory D. Cramer , Ramdas Dujari , Win-Chung Lee , Sundar M. Rao , Robert C. Wheland
发明人： Colin Anolick , Gregory D. Cramer , Ramdas Dujari , Win-Chung Lee , Sundar M. Rao , Robert C. Wheland
IPC分类号： C08G69/04 , C08G63/78 , C08G63/83 , C08G63/87 , C08G63/88 , C08G69/00 , C08G69/28 , C08G85/00 , C08G69/46 , C08G69/48
摘要： This invention concerns a process for increasing the molecular weight and viscosity of polyamides and other condensation polymers, by first injecting an inert gas into the polymer melt at elevated pressure, then stripping the volatiles from the polymer through the application of reduced pressure, followed by holding the polymer at elevated temperatures long enough for the reaction to occur. Activators may be added to the polymer. Port areas used in the stripping zone, may be kept hot for continuous operation.
摘要翻译： 本发明涉及一种提高聚酰胺和其它缩合聚合物的分子量和粘度的方法，方法是首先将惰性气体在升高的压力下注入聚合物熔体中，然后通过施加减压从聚合物中汽提挥发物，然后保持 聚合物在升高的温度下足以使反应发生。 可以将活化剂加入到聚合物中。 在剥离区使用的端口区域可以保持热持续运行。
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公开(公告)号：US5420230A
公开(公告)日：1995-05-30
申请号：US124142
申请日：1993-09-20
摘要： Disclosed is a process for preparing nylon by adding an amidation catalyst concentrated in "masterbatches" to the process melt resulting in a product with increased molecular weight and viscosity.
摘要翻译： 公开了通过将浓缩在“母料”中的酰胺化催化剂加入到工艺熔体中制备尼龙的方法，得到具有增加的分子量和粘度的产物。
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公开(公告)号：US5539079A
公开(公告)日：1996-07-23
申请号：US388014
申请日：1995-02-14
摘要： Disclosed is a process for preparing nylon by adding an amidation catalyst concentrated in "masterbatches" to the process melt resulting in a product with increased molecular weight and viscosity.
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公开(公告)号：US5955569A
公开(公告)日：1999-09-21
申请号：US757310
申请日：1996-11-27
CPC分类号： C08G69/30 , Y02P20/584
摘要： An improved method for increasing the relative viscosity and molecular weight of a polyamide polymer (such as nylon 6,6, nylon 6, and the like) while in the solid state involving the use of a phosphorus-containing catalyst (such as 2(2'-pyridyl) ethyl phosphonic acid or the like) in combination with an oxygen free gas characterized by a low dew point (typically below 30.degree. C. and preferably below -30.degree. C.). The combination of affording commercial operation at greater through put at lower temperature. Such a process is of particular value during the production of terpolyamide and multipolyamide polymer intended for use in colored nylon fiber manufacture.
摘要翻译： 在涉及使用含磷催化剂的固体状态（例如2（2））中，提高聚酰胺聚合物（例如尼龙6,6，尼龙6等）的相对粘度和分子量的改进方法 乙基膦酸等）与无氧气体组合，其特征在于低露点（通常低于30℃，优选低于-30℃）。 通过在较低温度下提供商业运作的组合。 在制造用于着色尼龙纤维制造中的三聚酰胺和多聚酰胺聚合物的生产期间，这种方法是特别有价值的。
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公开(公告)号：US4281935A
公开(公告)日：1981-08-04
申请号：US115214
申请日：1980-01-25
CPC分类号： G01N35/1097 , B01J4/001 , Y10T137/4329 , Y10T137/6579 , Y10T137/8766 , Y10T137/87676
摘要： A valve for adding ingredients to or sampling the fluid flowing through the valve includes an adjustable solid stem which can be extended through the flow path of a pipeline to form a seal with a seat positioned directly opposite the stem. An injection nozzle is fitted into the seat to permit addition of ingredients or sampling of the fluid when the stem is retracted from the seat. When the stem is seated, flow still occurs in the flow path.
摘要翻译： 用于向流过阀的流体添加成分或对流体进行取样的阀包括可调节的实心杆，其可以延伸穿过管道的流动路径，以形成与阀杆直接相对定位的阀座的密封。 当阀杆从阀座缩回时，喷嘴安装在阀座中以允许添加配料或取样流体。 当阀杆就位时，流动路径仍然发生。
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公开(公告)号：USH1190H
公开(公告)日：1993-06-01
申请号：US718943
申请日：1991-06-21
申请人： Gregory D. Cramer
发明人： Gregory D. Cramer
CPC分类号： G01N1/2035 , G01N11/08 , G01N2001/205 , G01N2001/2064
摘要： An analytical sampling valve that permits pumping of a side stream of fluid from a main process fluid stream through a monitoring device to measure fluid stream properties, and return of the sample to the main process line downstream of the sampling position, while providing the ability to clean the lines or remove the monitoring or pumping apparatus without shutdown of fluid flow.
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公开(公告)号：US5069552A
公开(公告)日：1991-12-03
申请号：US444778
申请日：1989-12-01
CPC分类号： G01N1/2035 , G01N21/05 , G01N21/85 , G01N2001/205 , G01N21/53
摘要： An apparatus for the analysis of a fluid flowing in a stream includes opposed hollow stems movable in a body member relative to each other. One stem contains a signalling source and the other contains a sensor for the signalling source.
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