Brightening agent for cyaniding planting of silver

A brightening agent for the cyaniding plating of silver is prepared from antimony potassium tartrate and potassium sodium tartrate through dissolving them in water or distrilled water and stirring. Its advantages are uniform lustre, not decouring, high hardness and antiwear nature, and high binding force to basic body.

Brightening agent for electroplated Sn-Bi alloy and its preparing process

A brightening agent for the electroplating Sn-Bi (or Sn-Pb, or Sn-Zn, or Sn-Co-Zn) alloy is prepared from the component A containing peregal and urea, the component B containing dimethylaminoimidazole through mixing A and B with 36-38% concentration for maldehyde in vol. ratio of (1.5-3):(1.5-3):1.

一种氰化镀银光亮剂及其制备方法

... 本发明涉及一种氰化镀银光亮剂，其组成为：100-250克/升酒石酸钾钠，10-20克/升咪唑，其中溶剂为水或蒸馏水。本发明还提供了上述光亮剂的制备方法，将酒石酸钾钠溶解于50-60℃的水或蒸馏水中；另将咪唑溶于水或蒸馏水中，然后加入到前述配制的酒石酸钾钠水溶液中，以水或蒸馏水稀释至一升，混合均匀即得所需光亮剂。将本发明提供的光亮剂加入氰化镀银镀液中按常规方法进行电镀，即可得到色泽均匀且不易变色、硬度较高、耐磨性较好、与基体结合力强的光亮镀银层。且该光亮剂同一般的氰化镀银光亮剂相比在操作工艺上具有工作温度高(5-40℃)、电流密度范围较宽、深镀能力好等优点。 ...

Primary brightener for potassium chloride or sodium chloride galvanizing process

The invention provides a primary brightener for a potassium chloride or sodium chloride galvanizing process. The primary brightener is prepared by the following method: (1) firstly adding N, N-diethyl propargylamine and diethylene glycol into a reactor, and heating for reaction under the action of cobalt sulfate as a catalyst; and (2) further adding amidosulfonic acid into the step (1), heating and further performing reaction to generate a reactant, namely the primary brightener. The primary brightener does not contain any surfactant, does not produce foam and can reduce the emission of wastewater, effectively protect a water source and soil and prevent the production of gas with irritating odor; and furthermore, the preparation method is simple, and the production is easy.

Additive for electroplating satin face nickel

The additive contains in each liter saccharine in 50-300 g, sodium allylsulfonate in 5-30 g, sodium phenylasulfinate in 5-30 g, and propargylsulfonate compound in 5-20 g. The additive of the present invention can homogenize the coating, reduce the crystal grain size obvisouly, reduce the tension and hardness of the coating, reduce the brittleness of the coating, increase the ductibility of the coating, expand technological current density range, and raise the tolerance of plating liquid to impurities.

电镀锡铋合金光亮剂及其制备方法

... 电镀锡铋合金光亮剂，其基本组成为A、B和甲醛；其中A由平平加和尿素等制得；B由二甲胺咪唑等制得。本发明还提供了上述电镀锡铋合金光亮剂的制备方法，将A、B和浓度为36-38％的甲醛按1.5～3∶1.5～3∶1的体积比混合均匀即得所需电镀锡铋合金光亮剂。本发明所得光亮剂可用在光亮镀锡、锡基合金(如Sn-Pb、Sn-Zn、Sn-Co-Zn)镀液中，可提高镀层的光亮性；根据需要可得到半光亮或全光亮的合金镀层。 ...

Electroplating tin-bithmuth alloy plating liquor and its preparation method

The basic composition of the electroplating tin-bismuth alloy plating solution contains SnSO4 or SnCl2 30-60 g/l alloy plating solution, complexing agent 400-600 ml/l alloy plating solution, stabilizing agent 80-120 ml/l alloy plating solution, brightening agent 10-20 ml/l alloy plating solution and bismuth salt 0.25-5 g/l alloy plating solution. Said invention also provides its preparation method, including the following steps: placing SnSO4 or SnCl2 in the water whose pH is 0.5-1 under the condition of stirring, adding the obtained solution into the complexing agent white stirring, standingstill, adding active carbon, adding stabilizing agent, stir-adding bismuth salt, regulating pH to 4-5, adding brightening agent under the condition of stirring, adding weater to 1000 ml.

Brightening agent for cyaniding planting of silver

A brightneing agent for cyaniding plating of silver is prepared from potassium sodium tartrate and imidazole, dissolving said potassium sodium tartrate in water or distilled water, dissolving imidazole in water or distilled water, mixing, diluting with water or distilled water, and stirring. Its advantages are uniform lustre, not decolouring, high hardness and antiwear nature, and high binding force to basic body.

Additive for electroplating satin face nickel

The additive contains in each liter alkylphenol ethoxylates 2-15 g, sorbic alcohol monooleate in polyoxyethylene solution 3-20 g, and hydroxyl propyl sulfonate pyridinium salt in 20-100 g. The additive of the present invention can raise the stability of electroplating liquid for continuous working without needing filtering every day, and this can raise working efficiency and reduce environmental pollution. In addition, it can result in good outer appearance of coating, simplify technological process and eliminate stirring and has high practical value.

Additive for electroplating satin face nickel

Additive for electroplating satin face nickel

The additive for electroplating satin face nickel contains in each liter sodium allylsulfonate in 50-200 g, diphenylsulfimide in 10-100 g, N,N-diethylpropargylamine formate in 2-20 g and glutin in 0-10g. The additive of the present invention is used as hoarsing carrier and can raise the pearlite effect of the low current density area and increase the hoarseness and whiteness of the coating.

Additive for electroplating satin face nickel

Additive for electroplating satin face nickel

一种氰化镀银光亮剂

... 本发明涉及一种氰化镀银光亮剂，由下述方法制得：将二甲胺溶液及咪唑置于反应器中搅拌加热至55-65℃；然后缓慢滴加环氧氯丙烷，滴加完后，仍在55-65℃温度下搅拌30-45分钟；再将温度升至85-95℃，搅拌30-45分钟；停止搅拌，冷却到室温，放出反应物，加水或蒸馏水稀释至500毫升，得淡黄色、微粘稠状物，即为所需光亮剂。将本发明提供的光亮剂加入氰化镀银镀液中按常规方法进行电镀，即可得到色泽均匀且不易变色、硬度较高、耐磨性较好、与基体结合力强的光亮镀银层。且该光亮剂同一般的氰化镀银光亮剂相比在操作工艺上具有工作温度高(5-40℃)、电流密度范围较宽、深镀能力好等优点。 ...

Stabilizer for plating tin-bismuth alloy and preparation method thereof

The basic composition of stabilizing agent for electroplating tio-bismuth alloy includes polyglycol 2-8g/l aqueous solution, vitamin C 2-6g/l aqeous solution and sodium subphosphite 10-30 g/l aqueoussolution and its preparation method includes the following steps: dissolving sodium subphosphite in water, under the condition of stirring adding vitamin C; dissolving polyglycol in hot water, then cooling to room temp.; under the condition of stirring adding the polyglycol solution into the solution containing sodium subphosphite and vitamin so as to obtain the invented stabilizing agent for electroplating tin-bismuth alloy. Said stabilizing agent can remove and reduce free oxygen in the solution, can prevent Sn(2+) from being oxidized into Sn (4+), and the oxidized component in the stabilizing agent, for example vitamin C can be reduced on the cathode.

Auxiliary additive for potassium chloride or sodium chloride galvanizing process

The invention provides an auxiliary additive for a chloride or sodium chloride galvanizing process. The auxiliary additive is characterized by being prepared from the following components in concentration by mass: 1.0-2.0g/L of nicotinic acid, 0.4-0.8g/L of polyvinyl pyrrolidone, 2.0-4.0g/L of sodium propyne sulfonate, 2-6.0g/L of edible saccharin and the balance of ethanol and deionized water. The auxiliary additive has an auxiliary effect on a main brightener, and has an effect of making up for light in high and low current density regions, does not contain surfactant, is mild in composition and does not generate foam; the production process is optimized and the pollution to water sources, soil and the like is avoided.

Brightening agent for cyaniding plant of silver

A brightening agent for the cyaniding plating of silver is prepared through mixing dimethylamine solution with imidazole, heating to 55-65 deg.C, slowly adding dropwise epoxy chloropropane, stirring for 30-45 min, heating to 85-95 deg.C, stirring for 30-45 min, cooling, and diluting with water or distilled water. Its advantages are uniform lustre, not decolouring, high hardness and antiwear nature, and high binding force to basic body.

Complexing agent for electroplating Sn-Bi alloy and its preparing process

A complexing agent for electroplating Sn-Bi alloy is prepared from Na3C6H7O5.2H2O 120-180 g/l aqueous solution, Na2EDTA 30-60 g/l aqueous solution, H3BO3 30-45 g/l aqueous solution and NH4Cl 30-100 g/l aqueous solution through dissolving H3BO3 in hot water, cooling and mixing with others. It can inhibit the hydrolosis of Sn ions, so increasing the stability of electroplating liquid.

Plating bath solution for potassium chloride or sodium chloride galvanizing process

The invention provides a plating bath solution for a potassium chloride or sodium chloride galvanizing process. The plating bath solution is characterized in that the plating bath solution comprises the following components in mass concentration: 60-65 g/L of disodium methylene dinaphthalene sulfonate, 45-50 g/L of sodium phenylacetate, 4-8 g/L of 2-ethyl hexyl sodium sulfate and the balance of deionized water. The plating bath solution is only added in a process of preparing a new liquid. The plating bath solution plays roles in strengthening dispersion and even-plating, the compositions thereof are insoluble in water, and no bubble is produced; and moreover, the plating bath solution provided by the invention is simple in preparation method and easy for production.