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1.发明申请公开(公告)号：US20100006799A1
公开(公告)日：2010-01-14
申请号：US12564437
申请日：2009-09-22
CPC分类号： C23F1/02 , C23F1/28 , C23F1/44 , H05K3/067 , H05K2203/0361
摘要： A method of stripping nickel from a printed wiring board comprises providing a printed wiring board with a nickel deposit on a surface and contacting the nickel deposit with phosphate ions and an oxidizer. An aqueous solution comprises ammonium ions, phosphate ions and an oxidizing agent present in amounts effective to strip nickel. An aqueous solution comprises about 1% to about 10% by weight hydrogen peroxide and about 5% to about 30% by weight of an ammonium phosphate. A method of pre-treating a copper substrate comprises providing a printed wiring board having a copper substrate and contacting the copper substrate with phosphate ions, and an oxidizer. A method of neutralizing permanganate on a printed wiring board comprises providing a printed wiring board with a permanganate residue on the printed wiring board and contacting the permanganate residue with phosphate ions, and an oxidizer.
摘要翻译： 从印刷线路板剥离镍的方法包括在表面上提供具有镍沉积物的印刷线路板，并使镍沉积物与磷酸根离子和氧化剂接触。 水溶液包含铵离子，磷酸根离子和以有效剥离镍的量存在的氧化剂。 水溶液包含约1重量％至约10重量％的过氧化氢和约5重量％至约30重量％的磷酸铵。 一种预处理铜基板的方法包括提供具有铜基底并使铜基底与磷酸根离子接触的印刷线路板和氧化剂。 在印刷电路板上中和高锰酸盐的方法包括在印刷线路板上提供印刷线路板上的高锰酸盐残留物，并使高锰酸盐残留物与磷酸根离子接触，以及氧化剂。
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公开(公告)号：US4957634A
公开(公告)日：1990-09-18
申请号：US417883
申请日：1989-10-06
IPC分类号： C02F1/52
CPC分类号： C02F1/5236 , Y10S210/912 , Y10S210/913 , Y10S210/914
摘要： A useful method for the recovery of heavy metal sulfides and alkali or alkaline earth metal salts of N-substituted dithiocarbamic acids from material containing heavy metal salts of N-substituted dithiocarbamic acids.
摘要翻译： 从含有N-取代二硫代氨基甲酸重金属盐的材料回收重金属硫化物和N-取代二硫代氨基甲酸的碱金属或碱土金属盐的有用方法。
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3.发明授权公开(公告)号：US07591956B2
公开(公告)日：2009-09-22
申请号：US11416729
申请日：2006-05-03
IPC分类号： H01B13/00
CPC分类号： C23F1/02 , C23F1/28 , C23F1/44 , H05K3/067 , H05K2203/0361
摘要： A method of stripping nickel from a printed wiring board comprises providing a printed wiring board with a nickel deposit on a surface and contacting the nickel deposit with phosphate ions and an oxidizer. An aqueous solution comprises ammonium ions, phosphate ions and an oxidizing agent present in amounts effective to strip nickel. An aqueous solution comprises about 1% to about 10% by weight hydrogen peroxide and about 5% to about 30% by weight of an ammonium phosphate. A method of pre-treating a copper substrate comprises providing a printed wiring board having a copper substrate and contacting the copper substrate with phosphate ions, and an oxidizer. A method of neutralizing permanganate on a printed wiring board comprises providing a printed wiring board with a permanganate residue on the printed wiring board and contacting the permanganate residue with phosphate ions, and an oxidizer.
摘要翻译： 从印刷线路板剥离镍的方法包括在表面上提供具有镍沉积物的印刷线路板，并使镍沉积物与磷酸根离子和氧化剂接触。 水溶液包含铵离子，磷酸根离子和以有效剥离镍的量存在的氧化剂。 水溶液包含约1重量％至约10重量％的过氧化氢和约5重量％至约30重量％的磷酸铵。 一种预处理铜基板的方法包括提供具有铜基底并使铜基底与磷酸根离子接触的印刷线路板和氧化剂。 在印刷电路板上中和高锰酸盐的方法包括在印刷线路板上提供印刷线路板上的高锰酸盐残留物，并使高锰酸盐残留物与磷酸根离子接触，以及氧化剂。
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公开(公告)号：US06623787B2
公开(公告)日：2003-09-23
申请号：US09915444
申请日：2001-07-26
IPC分类号： B01F312
CPC分类号： C09D11/324 , C01P2006/12 , C01P2006/40 , C09C1/56 , C09D11/037 , H05K3/424
摘要： A method for preventing a carbon dispersion from increasing in viscosity during use is described. The dispersion comprises graphite particles or carbon black particles or a combination of both dispersed in a fluid. The method involves lowering the susceptibility of the carbon dispersion to an increase in viscosity or ionic strength by lowering its pH or reducing its exposure to reactive components in the ambient atmospheric gas. The pH can be lowered by at least partially removing ammonia from the dispersion, or by adding a material that reduces the pH of the dispersion. The stability of the dispersion can also be improved by isolating the dispersion from reactive atmospheric gas. The stabilized aqueous carbon dispersion can have a viscosity of less than about 20 cps and a conductivity of less than about 3 mS.
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公开(公告)号：US4921964A
公开(公告)日：1990-05-01
申请号：US317383
申请日：1989-03-01
IPC分类号： C07D263/62 , C07D263/64
CPC分类号： C07D263/64
摘要： Disclosed is a process for the preparation of stilbene compounds such as bis(2-benzoxazolyl) stilbenes by reacting a stilbenedicarboxylate such as dimethyl-4,4'-stilbenedicarboxylate with an o-aminophenol in an organic solvent such as chloronaphthalene in the presence of a catalytic amount of a tin or titanium compound. The reaction is typically carried out at a temperature of about 200.degree.-250.degree. C. and a preferred catalyst is either dibutyl tin oxide or titanium tetra-alkoxide.
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公开(公告)号：US4847429A
公开(公告)日：1989-07-11
申请号：US81209
申请日：1987-08-03
IPC分类号： B01J27/12 , B01J27/125 , B01J27/16 , B01J29/06 , B01J31/02 , B01J31/04 , B01J31/08 , C07B61/00 , C07C37/06 , C07C37/11 , C07C37/14 , C07C39/15 , C07C39/17 , C07C41/18 , C07C41/30 , C07C43/205 , C07C43/21 , C07C69/017 , C07C69/28 , C07C205/00 , C07C205/21 , C07C205/36 , C07C321/00
CPC分类号： C07C37/11 , C07C37/06 , C07C37/14 , C07C2101/14
摘要： Process is disclosed for the preparation of phenylhydroquinones by the alkylation of hydroquinone (or derivatives thereof) with the cyclohexyl moieties, cyclohexanol or cyclohexene (or derivatives thereof), followed by dehydrogenation of the intermediate cyclohexylhydroquinone.
摘要翻译： 公开了通过用环己基部分，环己醇或环己烯（或其衍生物）烷基化氢醌（或其衍生物），然后中间体环己基氢醌脱氢来制备苯基氢醌的方法。
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7.发明授权Process for the preparation of 2,2,4-trimethyl-1,2-dihydroquinoline compounds 失效制备2,2,4-三甲基-1,2-二氢喹啉化合物的方法
公开(公告)号：US4514570A
公开(公告)日：1985-04-30
申请号：US585647
申请日：1984-03-02
IPC分类号： C07D215/06 , C07D215/14
CPC分类号： C07D215/06
摘要： Disclosed is a process for preparing 2,2,4-trimethyl-1,2-dihydroquinoline compounds by reacting acetone with an aniline compound in the presence of a strongly acidic sulfonic acid-type macroreticular cation exchange resin catalyst. 2,2,4-Trimethyl-1,2-dihydroquinoline compounds are obtained in good yield and containing substantially no catalyst residue contaminant.
摘要翻译： 公开了一种在强酸性磺酸型大网络阳离子交换树脂催化剂存在下使丙酮与苯胺化合物反应制备2,2,4-三甲基-1,2-二氢喹啉化合物的方法。 获得了2,2,4-三甲基-1,2-二氢喹啉化合物，并且基本上不含有催化剂残余物污染物。
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公开(公告)号：US4342877A
公开(公告)日：1982-08-03
申请号：US93661
申请日：1979-11-13
IPC分类号： C07C67/287 , C07C69/035 , C07C69/157 , C07C69/24 , C07C69/63 , C07C69/635
CPC分类号： C07C67/287
摘要： Process for the preparation of Compound I by treating Compound II with X.sub.2 or SO.sub.2 X.sub.2 in the presence of a free radical initiator and an anhydride having the formula (RCO).sub.2 O while eliminating the acid halide formed having the formula RCOX from the reaction mixture, wherein Compounds I and II have the formulas ##STR1## and R is C.sub.1 -C.sub.3 alkyl, X is Cl or Br and n is 1, 2 or 3.
摘要翻译： 在自由基引发剂和具有式（RCO）2 O的酸酐的存在下，用X2或SO2X2处理化合物II，同时从反应混合物中除去由式RCOX形成的酰卤，从而制备化合物I的方法，其中化合物 I和II具有式[IMAGE]，R是C 1 -C 3烷基，X是Cl或Br，n是1,2或3。
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