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公开(公告)号：US5352350A
公开(公告)日：1994-10-04
申请号：US837468
申请日：1992-02-14
CPC分类号： G03F7/3071 , C23C18/1617 , C23F1/00 , C25D21/14 , G05D11/139 , G05D21/02 , B01J2208/00628
摘要： A method is described for maintaining constant chemical composition in solutions used for wet chemical processing. All chemical species that are deliberately included in the bath are kept at constant concentration primarily by a method of compensating for their depletion or generation with a set of feed solutions that are formulated and dosed into the bath in accordance with an overall material balance. Further, all chemical species not deliberately included in the bath are kept at constant concentration primarily by keeping the aggregate volume of replenishing stocks in strict proportion to the process service performed by the bath (e.g. the charge passed in an electroplating cell). Finally, a time-based scheme completes the control of the concentration of all bath species by controlling any species (whether deliberately included in the bath or not) that is depleted or generated as the result of chemical reactions which occur independently and/or spontaneously with time. Maintaining all bath chemical species at constant concentration prevents bath aging and permits production of more uniform work pieces from the bath.
摘要翻译： 描述了一种用于在用于湿化学处理的溶液中保持恒定化学成分的方法。 有意包含在浴中的所有化学物质主要通过补偿其消耗或产生的方法保持恒定浓度，所述方法通过根据整体物料平衡配制并投入浴中的一组进料溶液。 此外，不是故意包括在浴中的所有化学物质都保持恒定浓度，主要是通过保持补充料的总体积与由浴进行的处理服务（例如在电镀槽中通过的电荷）严格成比例。 最后，基于时间的方案通过控制任何物种（无论是故意包括在浴中）是否完全控制所有沐浴物种的浓度，由于化学反应的结果而耗尽或产生，这些化学反应独立地和/或自发地发生， 时间。 保持恒定浓度的所有浴化学物质可以防止沐浴老化，并允许从浴中生产更均匀的工件。
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公开(公告)号：US5192418A
公开(公告)日：1993-03-09
申请号：US726931
申请日：1991-07-08
CPC分类号： C25D21/18 , C25D21/22 , Y10S204/13 , Y10S210/912 , Y10S210/919
摘要： The present invention relates to a method of completely recovering nickel and zinc metal from multiple plating process waste streams by first separating the waste streams into a clean, relatively constant flow and/or concentration fraction and a dirty, variable flow and/or concentration fraction. Metal is recovered from the clean fraction by ion-exchange so as to concentrate the extracted metals for direct return to the plating bath. The effluent from the ion-exchange step is then blended with the dirty, variable flow and concentration fraction. This blended flow is first neutralized and then precipitated in a two-stage process using a sodium hydroxide solution. The resultant slurry containing the metal precipitate is filtered to yield a filter cake containing recovered nickel and zinc. This filter cake can then be further processed to recover the metal for reintroduction into the plating bath or for other uses.
摘要翻译： 本发明涉及通过首先将废物流分离成干净，相对恒定的流量和/或浓度部分和脏的，可变的流动和/或浓度部分，从多个电镀工艺废料流中完全回收镍和锌的金属的方法。 通过离子交换从清洁部分回收金属，以便将提取的金属集中以直接返回到电镀浴。 然后将离子交换步骤的流出物与脏的，可变的流量和浓度级分混合。 首先中和该混合流，然后使用氢氧化钠溶液在两步法中沉淀。 将含有金属沉淀物的所得浆料过滤，得到含有回收的镍和锌的滤饼。 然后可以进一步处理该滤饼以回收金属以重新引入电镀槽或用于其它用途。
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53.发明授权Electrodialysis cell for removal of excess electrolytes formed during electrodeposition of photoresists coatings 失效用于去除在光致抗蚀剂涂层电沉积期间形成的过量电解质的电渗析池
公开(公告)号：US5047128A
公开(公告)日：1991-09-10
申请号：US459535
申请日：1990-01-02
CPC分类号： G03F7/164 , C25D13/24 , H05K3/0091 , Y10S204/13
摘要： This invention provides a means of controlling the composition of electrodepositable photoresists emulsion. The system removes contaminants from the bath which may adversely effect the quality of the deposited coatings and allows for continuous monitoring of the conductivity of the system.
摘要翻译： 本发明提供了一种控制可电沉积光致抗蚀剂乳液组成的方法。 该系统从浴中除去可能不利地影响沉积涂层质量的污染物，并允许连续监测系统的电导率。
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54.发明授权Selective ion-complexing media for the removal of metal-ion contaminants from plating baths 失效用于从电镀浴中去除金属离子污染物的选择性离子络合介质
公开(公告)号：US4876287A
公开(公告)日：1989-10-24
申请号：US929005
申请日：1986-11-10
IPC分类号： C25D21/18
CPC分类号： C25D21/18
摘要： Ion-complexing gels are disclosed for the selective removal of metal ions from plating solutions, the gels comprising hydrophobic nonporous polymers plasticized and swollen with either hydroxyoxime or phosphoric acid ester complexing agents. Also disclosed are novel ion-complexing media comprising polymeric microporous anisotropic beads impregnated with the same complexing agents. Copper, zinc and iron contaminants are effectively removed from nickel-plating solutions.
摘要翻译： 公开了离子络合凝胶用于从电镀溶液中选择性去除金属离子，该凝胶包含用羟基肟或磷酸酯络合剂增塑和溶胀的疏水性无孔聚合物。 还公开了包含用相同络合剂浸渍的聚合物微孔各向异性颗粒的新型离子络合介质。 铜，锌和铁污染物有效地从镀镍溶液中除去。
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公开(公告)号：US4636288A
公开(公告)日：1987-01-13
申请号：US665052
申请日：1984-10-26
申请人： Daniel J. Vaughan
发明人： Daniel J. Vaughan
CPC分类号： B01D61/44 , B01D2311/12 , B01D2311/18 , B01D2311/2642
摘要： Salts of multivalent cations in aqueous solution, with or without admixture with salts of monovalent cations, are converted into the respective acids or halogens of the anions of the salts and into water insoluble salts or ionically immobile compounds of the multivalent cations. The conversion is effected by electrodialysis and electrotransport of the multivalent cations through a cation permeable membrane into aqueous solutions containing both agents that insolubilize or ionically immobilize the multivalent cations and a soluble salt of an acid, which acid in a one normal solution would have a pH no greater than three and forms water soluble salt with the multivalent cation. The use of the added salt in the solution into which the multivalent cations are electrotransported minimizes fouling of the membrane and makes the electrodialytic conversion efficient and with high capacity.
摘要翻译： 在含有或不与一价阳离子的盐混合的水溶液中的多价阳离子盐转化成盐的阴离子的相应酸或卤素，并转化为多价阳离子的水不溶性盐或离子固定化合物。 转化通过电渗析和多价阳离子通过阳离子可渗透膜的电转移进入含有两者的溶液的水溶液中，所述水溶液含有使多价阳离子不溶解或离子固定的试剂和酸的可溶性盐，一种正常溶液中的酸将具有pH 不大于3，并与多价阳离子形成水溶性盐。 多价阳离子在其中运输的溶液中加入的盐的使用最小化膜的结垢，并使电渗析转换效率高，容量高。
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公开(公告)号：US4377450A
公开(公告)日：1983-03-22
申请号：US368568
申请日：1982-04-15
申请人： Yutaka Okinaka
发明人： Yutaka Okinaka
CPC分类号： C25D21/18 , C01G55/004 , C25D3/50 , C01P2004/80
摘要： A palladium electroplating procedure is described in which the bath is replenished by palladium hydroxide made in a special way. The palladium hydroxide is made by oxidation of palladium diammine dichloride in alkaline aqueous solution using hypochlorite ion as the oxidizing agent. Palladium hydroxide is ideal as a replenishing agent for palladium electroplating baths because it neutralizes hydrogen ions produced in the electroplating process and does not yield anions that accumulate in the bath.
摘要翻译： 描述了一种钯电镀方法，其中通过以特殊方式制备的氢氧化钯补充浴。 通过使用次氯酸根离子作为氧化剂在碱性水溶液中氧化二氯化钯二氧化钛制备氢氧化钯。 氢氧化钯是用于钯电镀浴的补充剂的理想选择，因为它中和了电镀过程中产生的氢离子，并且不产生积聚在浴中的阴离子。
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公开(公告)号：US4302304A
公开(公告)日：1981-11-24
申请号：US62531
申请日：1979-07-31
申请人： Kenji Ueda , Akihiro Sakanishi
发明人： Kenji Ueda , Akihiro Sakanishi
CPC分类号： C25D21/18
摘要： A process for treating an electrolytic solution to recover a concentrated solution from a dilute one in an electrolytic cell or in each of such cells divided by a permeable diaphragm into a feed chamber and a recovery chamber provided, respectively, with positive and negative electrodes or vice versa. A dilute electrolytic solution is fed to the feed chamber, and, while electrolysis is in progress between the electrode of the feed chamber and the electrode held in the recovery chamber in close proximity to, or in intimate contact with, the diaphragm, the electrolyzed solution is allowed to exude through the diaphragm into the recovery chamber, whereby the concentrated solution is extracted into the latter chamber. In the apparatus for practicing the process, either the negative or positive electrode is held in the feed chamber and the other electrode is held in the recovery chamber in close proximity to, or in intimate contact with, the diaphragm. The feed chamber is provided with an inlet for the electrolytic solution to be treated and also with an outlet for the treated solution. The recovery chamber is provided with a jet means for injecting, at the start of the electrolysis, part of the electrolytic solution to be treated against the diaprhagm and the latter electrode, a gas outlet through which the gas generated at the electrode during the electrolysis is released, and an acid outlet through which a concentrated electrolytic solution that has exuded into the recovery chamber as a result of the electrolytic treatment is taken out of the vessel.
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公开(公告)号：US4147605A
公开(公告)日：1979-04-03
申请号：US787314
申请日：1977-04-14
IPC分类号： B01D61/42 , B01D61/44 , B01D61/50 , B01D61/54 , B01D63/00 , B01D65/08 , B01J13/00 , B01J19/08 , C01B33/141 , C01G30/00 , C25B1/00 , C25D21/16 , C25D21/18 , B01D13/02
CPC分类号： B01D61/46 , B01J13/0017 , B82Y30/00 , C01B33/141 , C01G30/005 , B01D2311/18 , C01P2004/64
摘要： A method of producing a sol of an element selected from the group consisting silicon, aluminum, antimony, chromium, manganese, molybdenum, tin and tungsten comprising electrodialytically transferring alkali metal cations of an aqueous solution of a water soluble alkali metal salt of the oxide of the said element from an anode compartment of an electrolytic cell to a cathode compartment of the electrolytic cell while essentially preventing the migration of the metal oxide into the cathode compartment by positioning a cation permselective membrane between the anode compartment and the cathode compartment while carefully and continuously controlling the pH of the solution and removing the so-produced sol from the anode compartment of the electrolytic cell as well as a novel electrodialytic cell for sol formation.
摘要翻译： 制备选自硅，铝，锑，铬，锰，钼，锡和钨的元素的溶胶的方法，其包括电渗析转移碱金属阳离子的水溶性碱金属阳离子， 所述元件从电解池的阳极室到电解池的阴极室，同时基本上通过在阳极室和阴极室之间定位阳离子选择性选择膜，同时小心并连续地将金属氧化物迁移到阴极室 控制溶液的pH并从电解池的阳极室除去所产生的溶胶，以及用于溶胶形成的新型电渗析池。
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公开(公告)号：US4049519A
公开(公告)日：1977-09-20
申请号：US730086
申请日：1976-10-06
申请人： Walter John Sloan
发明人： Walter John Sloan
CPC分类号： B01D61/44 , C25D21/16 , B01D2311/04 , B01D2311/2642
摘要： Reduction of carbonate concentrations in cyanide-containing electroplating baths and congeneric solutions using an electrolytic cell, equipped with cation permselective membranes, by the selective addition of hydrogen ions whereby the carbonate ions are converted, in sequence, to bicarbonate ions and then to carbonic acid which decomposes to water and carbon dioxide.
摘要翻译： 通过选择性加入氢离子，使碳酸根离子依次转化为碳酸氢根离子，然后再转化为碳酸，从而使用装有阳离子选择渗透膜的电解池，减少含氰化物的电镀槽和同种溶液中的碳酸盐浓度， 分解成水和二氧化碳。
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公开(公告)号：US3994787A
公开(公告)日：1976-11-30
申请号：US616037
申请日：1975-09-23
申请人： Emanuel Pfeil , Klaus Roschmann
发明人： Emanuel Pfeil , Klaus Roschmann
CPC分类号： C25D21/18 , Y10S204/13
摘要： A process for producing and operating an electroplating bath in which there appears NH.sub.4.sup.+ ions which impair the quality of the bath comprising adding salts of a hexanitrocobaltate-III complex to the bath to bring about precipitation of the NH.sub.4.sup.+ ions.
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