-
公开(公告)号：US06479593B2
公开(公告)日：2002-11-12
申请号：US09950147
申请日：2001-09-10
IPC分类号： C08F12002
CPC分类号： C08F8/14 , C08F2810/20
摘要： Provided herein are cross-linked super absorbing polymers made by reacting a copolymer having an esterifiable acid group with a cyclic alkylene carbonate. The resulting cross-linked materials have an increased ability to retain absorbed liquids even under the influence of applied stress. Catalysts are also disclosed which are useful in promoting the reaction between the alkylene carbonate and copolymer.
摘要翻译： 本文提供了通过使具有可酯化酸基的共聚物与环状碳酸亚烷基酯反应制备的交联超吸收聚合物。 所产生的交联材料即使在施加的应力的影响下也具有增加保留吸收液体的能力。 还公开了可用于促进碳酸亚烷基酯和共聚物之间的反应的催化剂。
-
2.发明授权公开(公告)号：US06710203B2
公开(公告)日：2004-03-23
申请号：US09863558
申请日：2001-05-23
IPC分类号： C07C27110
CPC分类号： C07C269/00 , C07C271/16
摘要： A method of preparing hydroxyalkylcarbamates from six-membered cyclic carbonates. The method involves reacting a six-membered cyclic carbonate with anhydrous ammonia or aqueous ammonium hydroxide. The present invention also provides for hydroxyalkylcarbamates prepared from six-membered cyclic carbonates, and for coating compositions comprising hydroxyalkylcarbamates prepared according to the present invention.
摘要翻译： 从六元环状碳酸酯制备羟烷基氨基甲酸酯的方法。 该方法包括使六元环状碳酸酯与无水氨水或氢氧化铵水溶液反应。 本发明还提供由六元环状碳酸酯制备的羟烷基氨基甲酸酯，以及包含根据本发明制备的羟烷基氨基甲酸酯的涂料组合物。
-
3.发明授权公开(公告)号：US06262297B1
公开(公告)日：2001-07-17
申请号：US09669220
申请日：2000-09-25
IPC分类号： C07C26906
CPC分类号： C07C269/00 , C07C271/16
摘要： A method of preparing hydroxyalkylcarbamates from six-membered cyclic carbonates. The method involves reacting a six-membered cyclic carbonate with anhydrous ammonia or aqueous ammonium hydroxide. The present invention also provides for hydroxyalkylcarbamates prepared from six-membered cyclic carbonates, and for coating compositions comprising hydroxyalkylcarbamates prepared according to the present invention.
摘要翻译： 从六元环状碳酸酯制备羟烷基氨基甲酸酯的方法。 该方法包括使六元环状碳酸酯与无水氨水或氢氧化铵水溶液反应。 本发明还提供由六元环状碳酸酯制备的羟烷基氨基甲酸酯，以及包含根据本发明制备的羟烷基氨基甲酸酯的涂料组合物。
-
公开(公告)号：US06498278B1
公开(公告)日：2002-12-24
申请号：US09946312
申请日：2001-09-05
IPC分类号： C07C4100
摘要： A method for the preparation of &ggr;-hydroxy ethers from cyclic organic carbonates and active-hydrogen-containing compounds in one form includes the steps of contacting an active-hydrogen-containing compound and a cyclic organic carbonate compound containing a six-membered ring, and a catalyst, running the reaction at a suitable temperature, and isolating the &ggr;-hydroxy ether as a mixture that can be purified or used directly as produced in the reaction.
摘要翻译： 一种形式的环状有机碳酸酯和含活性氢化合物的γ-羟基醚的制备方法包括使含活性氢的化合物与含有六元环的环状有机碳酸酯化合物接触的步骤，以及 催化剂，在合适的温度下运行反应，并将γ-羟基醚作为可以如反应产生的直接纯化或直接使用的混合物分离。
-
公开(公告)号：US06855795B2
公开(公告)日：2005-02-15
申请号：US10850249
申请日：2004-05-20
CPC分类号： C08G64/307 , Y02P20/582
摘要： The present invention provides a process for producing polycarbonates in the presence of one or more alkali metal or alkaline-earth metal catalysts, and subsequently removing the catalyst residues by chelation, to yield a clear polycarbonate product that is free from catalyst residues, and is thus suitable for use as a binding material in the ceramics industry where residual amounts of catalysts in the binder are burdensome.
摘要翻译： 本发明提供了在一种或多种碱金属或碱土金属催化剂存在下生产聚碳酸酯的方法，随后通过螯合除去催化剂残余物，得到不含催化剂残余物的透明聚碳酸酯产物，因此 适合用作陶瓷工业中的粘结材料，其中粘合剂中残留量的催化剂是繁重的。
-
公开(公告)号：US4275752A
公开(公告)日：1981-06-30
申请号：US78461
申请日：1979-09-24
申请人： Nigel A. Collier , John H. Clements
发明人： Nigel A. Collier , John H. Clements
CPC分类号： G05D7/0106 , G05D11/03 , Y10T137/0352 , Y10T137/0368 , Y10T137/2499
摘要： Apparatus for combining fluid flows in variable proportions is adapted for blending an active constituent gas and a diluent gas to calibrate gas analyzers used in monitoring pollution.Diluent gas passes from source 34 through a downstream differential pressure regulator 17 and a constant flow restrictor 12 to outlet 14 which communicates with control port 20 of regulator 17. Active gas passes from source 35 through differential pressure regulator 23, through three fixed parallel flow restrictors 22, 29 and 30 to combine with the diluent gas upstream of restrictor 12. Control port 26 of regulator 23 communicates with the input to restrictor 12. Switching of valves 31, 32 and 33 varies the rate of flow along conduit 16 and hence the proportions of gases combined upstream of restrictor 12. Regulator 23 maintains flow along 16 substantially constant for given valve settings, and regulator 17 maintains flow along outlet 14 substantially constant despite changes in flow rate in the conduit 16.
摘要翻译： 用于混合不同比例的流体流的装置适于混合活性组分气体和稀释气体，以校准用于监测污染物的气体分析仪。 稀释气体从源34通过下游差压调节器17和恒流限流器12到与调节器17的控制端口20连通的出口14。活性气体从源35通过差压调节器23通过三个固定的并联流量限制器 22,29和30与限流器12上游的稀释气体结合。调节器23的控制端口26与输入端与限流器12连通。阀31,32和33的切换改变了沿导管16的流速， 在限流器12的上游结合有气体。调节器23对于给定的阀设置保持沿着基本上恒定的流动，并且调节器17保持导管16内的流速基本上恒定的流体。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.046 秒)