Daiwa Fine Chemicals Co., Ltd. List of Products and Services

"Dain Gold Star V" is an electroplating bath for gold-tin alloys with a melting point of 280±1°C and unique melting characteristics, covering a wide range of compositions. This plating bath is weakly acidic, with a pH of 5.5, and does not adversely affect resist materials. Additionally, it is a versatile bath with good long-term stability, suitable for various applications such as barrel and rack plating. It has a high melting point and can serve as an alternative to high-temperature solder, contributing to lead-free initiatives. 【Features】 ■ High melting point ■ Weakly acidic bath ■ Contributes to lead-free initiatives ■ Unique melting characteristics ■ Can replace high-temperature solder *For more details, please refer to the catalog or feel free to contact us.

The "Dain IN-161PL" is a plating bath that easily diffuses into various metals, providing excellent oil affinity, lubrication, and anti-seizure properties. This plating bath is widely used for surface treatment of bearings and other components due to its superior load-bearing capacity, wear resistance, and anti-seizure properties. Additionally, it has good long-term stability and produces a dense and uniform electrodeposited In coating. 【Features】 ■ Soft and low melting point ■ Good oil affinity ■ Good long-term stability of the bath ■ Widely used for surface treatment ■ Produces a uniform electrodeposited In coating *For more details, please refer to the catalog or feel free to contact us.

Cyanide silver plating solution has been used for many years due to its usefulness, despite having many issues related to the working environment and wastewater treatment. Dain Silver AG-PL30 is a non-cyanide type of silver plating solution that our company successfully developed and industrialized for the first time in the world. Despite being a plating solution that contains no cyanide at all (not low-cyanide, but non-cyanide), it has performance equivalent to that of cyanide baths. Furthermore, it also surpasses cyanide baths in terms of stability during long-term use and the ability to plate over a wide pH range. As a result of these recognized characteristics, AG-PL30 is used in various applications. Additionally, its purely technical aspects have been highly regarded at academic conferences, and it received the Surface Technology Association Technical Award for the fiscal year 1992 (in collaboration with Osaka Prefecture University).

Traditionally, cyanide complex-based plating solutions have been used for replacement-type electroless plating of silver (Ag), but there have been many issues regarding the working environment and wastewater treatment costs. The Dain Silver EL-3S process is a replacement-type electroless Ag plating solution that contains no cyanide at all and has performance equivalent to that of cyanide baths. It also has a long liquid life and can be applied not only to copper materials but also to electroless Ni-P plated materials. It can be used as an alternative plating for electroless Ni-P/electroless Au plating, which is a coating for soldering printed circuit boards, and by directly plating Ag onto copper circuits using the EL-3S process, it can reduce plating costs. Furthermore, it demonstrates superior reliability in solderability compared to heat-resistant preflux.

Gold-tin alloy shows a eutectic point at an Au/Sn composition of 80/20 (wt%), with a melting point of 280°C. This alloy is non-oxidizing, has good solderability, low resistivity, and improved creep characteristics, lubrication, and wear resistance, making it suitable as a high-temperature joining material for high-frequency devices such as mobile phones, optoelectronic packages, mounted components, optical communication components, as well as for protective element materials, sliding parts, and decorative items. Many gold-tin alloy materials are produced in the form of ribbons or pellets metallurgically, but issues have arisen that make them difficult to apply to narrow pitches associated with high-density mounting. This plating bath allows for barrel plating of micro parts, enabling the production of a uniform eutectic composition plating film.

Automotive, home appliances, and construction materials require excellent corrosion resistance, so they have been treated with hexavalent chromium solution after zinc plating. However, due to the inclusion of harmful hexavalent chromium in the process, it is subject to regulations such as the RoHS directive. Dainchromate TR-02 is a chemical treatment solution primarily composed of trivalent chromium for zinc and zinc-nickel alloy plating. It does not contain hexavalent chromium. When combined with our zinc-nickel alloy plating solution, Dainjin Alloy N-PL, it demonstrates excellent corrosion resistance with white rust resistance for 200 hours and red rust resistance for 500 hours. Additionally, the treatment process is similar to conventional hexavalent chromium treatment, allowing for the direct repurposing of existing equipment.

The Dainakuchi PB-830Z is a silver (Ag) colloid activator used as a catalyst additive for electroless copper plating on various plastics, coating resin films, fibers, and paper. It can be used as an alternative to traditional palladium catalysts, providing adhesion properties equivalent to those of palladium (Pd). Additionally, since there is no residual Pd smut, it prevents issues caused by overflow during subsequent electroless Ni to Au plating after copper plating.

This is a strong acidic non-cyanide electroplating process based on organic acids. It allows for silver plating without etching the resist pattern and direct silver plating on SUS materials. It consists of two processes: strike silver plating and main silver plating. By adjusting the bath composition, it can be applied to various plating methods, including rack plating and continuous plating. Depending on the application, options for a matte white, semi-gloss white, or glossy appearance lineup are available.

Indium (In) is a metal that easily diffuses into various metals and has excellent alkali resistance, with characteristics such as a low melting point (156°C). In plating has good corrosion resistance against organic acids in lubricating oils, and its load-bearing capacity, wear resistance, and seizure resistance are outstanding, making it widely used for surface treatments such as bearings. DAIN IN-161PL is an electroplating solution based on organic sulfonic acid. It produces a uniform and fine-particle white coating. The stability of the plating solution over time is also good, and bath management is easy.

Silver, silver alloys, or silver-plated products are widely used in tableware and jewelry due to their beautiful silver color. Furthermore, they possess excellent electrical properties such as solderability and contact electrical resistance, making them useful as contact materials in electronic components. However, silver generally tarnishes easily, particularly through sulfide formation, changing to yellow, purple, and in severe cases, black. The tarnishing of silver not only detracts from its aesthetic appeal and reduces its commercial value but also adversely affects solderability and contact electrical resistance. New Dain Silver prevents silver tarnishing for an extended period with a very simple room temperature, short-duration immersion treatment. The protective film formed by the New Dain Silver treatment is an extremely thin organic chelate film. The treatment does not alter the appearance of silver or degrade its solderability or contact electrical resistance.

■ It exhibits strong effects in preventing discoloration of various silver-plated products. ■ It is ideal for surface treatment of electronic components and decorative items. ■ It does not affect the contact resistance or solder wettability of metal surfaces. ■ It forms a water-repellent film without stains or stickiness after treatment. ■ It does not contain heavy metals like chromium or organic solvents, and is not subject to the Poisonous and Deleterious Substances Control Law, the Industrial Safety and Health Law, the Fire Service Law, or the PRTR Law. ■ It is equivalent to thiol treatment.

This catalog provides an overview of "Metal Surface Treatment Processes." It includes a non-cyanide silver plating process, "Dain Silver EL, RD," which allows for the selection of replacement or reduction types depending on the target material, as well as various stable tin alloy plating processes such as "DAIN TINGOOD 501, DAIN TINSIL SBB VI." Yamato Kasei can propose "new plating processes" that address issues related to plating, such as environmental concerns, improvement of working conditions, and reduction of total costs. [Contents] ■ Non-cyanide silver plating process ■ Lead-free tin plating process ■ Various additives for the same plating ■ Non-cyanide indium plating ■ Zinc-nickel alloy plating and chromate ■ Nano-etching treatment agents for titanium materials ■ Palladium smut removers *For more details, please refer to the PDF materials or feel free to contact us.

"DAIN TINGOOD S-25" is a 25wt% Sn salt solution with a higher Sn concentration than conventional products. In barrel plating, where the amount of replenishment due to liquid extraction is significant, it reduces the replenishment amount of Sn salt and the cost of waste liquid treatment, thereby lowering the total cost of tin plating. It is possible to mitigate the increase in liquid volume and free acid during metal replenishment. 【Features】 ■ Total cost reduction ■ Liquid volume reduced by half compared to conventional products ■ Higher Sn concentration than conventional products ■ Mitigates increase in liquid volume and free acid ■ Reduces replenishment amount of Sn salt and waste liquid treatment costs (Related keywords: tin plating, Sn, tin salt, organic acid) *For more details, please refer to the PDF document or feel free to contact us.

"Dain Silver HKR" is a non-cyanide, alkaline type of bright silver plating solution that achieves high hardness silver plating, which is being adopted in electronic components and EV parts that have seen increased demand in recent years. 【Features】 * Compared to typical non-cyanide bright silver plating baths, it has higher heat resistance and can suppress discoloration of the coating due to copper diffusion from the substrate during heat treatment (according to our research). * Pre-treatment with various strike silver plating is required. * A uniform bright appearance with a Vickers hardness of approximately 110 Hv can be obtained. * It does not contain substances regulated by the RoHS directive or substances listed as candidates for the 22nd SVHC. Currently, we are offering technical documents summarizing measurement results of various characteristics! Please check them out via PDF download. We are also able to accommodate prototype requests upon consultation, so we look forward to your inquiries!

* Dainjin Alloy N2-PL is a high nickel type zinc-nickel alloy plating solution. * A high corrosion-resistant coating with a nickel content of 14-18 wt% can be obtained. * Bath temperature: 35 °C, achieving high work efficiency with a Dk of 4 A/dm2. * It is a weakly acidic type with a pH around 5.8, allowing plating on materials that are sensitive to alkalis. * For more details, please contact us.

"VERZONE DA-3" is a discoloration prevention agent for tin plating that exhibits a powerful discoloration prevention effect. This treatment solution is acidic and can be used with a simple immersion treatment. In constant temperature and humidity tests (85°C/85% RH), there is no discoloration after 120 hours, and there is almost no change in solder wettability before and after the discoloration prevention treatment. 【Example of Treatment Process】 ■ Tin and tin alloy plating ■ Rinsing ■ Discoloration prevention ■ Rinsing ■ Drying *For more details, please refer to the PDF document or feel free to contact us.

"Silver Picat P" is a spray-type silver tarnish remover that can remove discoloration and dirt from gold and silver accessories without significantly scraping the base material. The pH of the liquid is close to neutral, causing almost no damage to the items. In an example of use on a severely tarnished silver necklace with no shine, the tarnish disappeared and the shine was restored. 【Usage Instructions】 ■ Place the item in a larger container, shake this product well, and spray it over the entire surface from a distance of about 10 cm. ■ After spraying, let it sit for about 30 seconds to 1 minute, then rinse thoroughly with tap water. ■ If there is severe grease, wash with a neutral detergent beforehand before using this product. *For more details, please refer to the PDF document or feel free to contact us.

Dain Silver RD2 is a non-cyanide, self-catalyzing electroless silver plating solution. With a suitable pretreatment process for the target material and in combination with palladium catalyst application, it is possible to form a silver plating film on non-conductors such as resin and glass. *For more details, please contact us.

"Dyne Silver BPL" is an alkaline silver plating bath based on organic acid silver salts and special additives, completely free of cyanide compounds. It does not contain cyanide compounds, is easy to handle, and is suitable for general wastewater treatment. It excels in adhesion and uniform electrodeposition, exhibiting a white, matte appearance. 【Features】 ■ Suppresses discoloration due to heating compared to conventional non-cyanide silver plating baths ■ Free of cyanide compounds and easy to handle ■ Suitable for general wastewater treatment ■ Excellent adhesion and uniform electrodeposition ■ Exhibits a white, matte appearance *For more details, please refer to the PDF document or contact us.

Dain Silver EL-3S is a non-cyanide, strongly acidic type of electroless replacement silver plating bath. * It can replace deposit on various copper materials and electroless nickel-phosphorus plating (especially medium phosphorus type). * It is suitable for silver plating on independent pattern substrates where electrical conduction is difficult. * It has a long liquid life and excellent stability, allowing for use of more than 2 turns. * It can deposit a film of approximately 0.4 μm. * A thicker type of 2-3 μm is also available in the lineup.

Dine Silver AG-PL30 is a safe silver plating bath that does not contain cyanide compounds. The plating film has a beautiful white color. Both the plating appearance and crystal grain size are on par with traditional cyanide baths, and the electrical properties are not inferior at all. Additionally, the crystal grain size is small, providing good adhesion and coverage. 【Features】 ■ Usable in a wide pH range of 3 to 10 ■ Direct silver plating on copper-based materials is possible (Adhesion can be enhanced by combining with various strike silver platings) ■ Post-treatment with specialized agents is required *For more details, please refer to the PDF document or feel free to contact us.

"DAIN TINGOOD 802" is a Pb-free high melting point solder plating material. It is an acidic bath (organic sulfonic acid) that does not contain fluorides, allowing for a stable Sb content (approximately 10 wt%) coating to be obtained. Plating can be performed with relatively high current efficiency. 【Usage Conditions】 ■DAIN TINGOOD 802BASE 　・Concentration Condition: 900mL/L ■DAIN TINGOOD Sb-36 　・Concentration Condition: 11.5g/L ■DAIN TINGOOD S-25 　・Concentration Condition: 80g/L *For more details, please refer to the PDF document or feel free to contact us.

"New Dine Silver Oil-RD" is a product that has a strong discoloration prevention effect on metals such as copper (alloy) and silver. It can be added to lubricants, cutting oils, and solvents such as mineral oils and hydrocarbons. Even when added to oils containing corrosive extreme pressure agents, it exhibits remarkable rust prevention capabilities. 【Features】 - Effective against other metals such as steel, zinc, aluminum, nickel, and tin - The rust prevention film on the metal surface is thin, preventing stickiness and adhesion to other items - By adding it to silver paste, it suppresses silver sulfide formation *For more details, please refer to the PDF document or feel free to contact us.

* It is an acid non-electrolytic replacement silver plating that does not contain cyanide compounds. * It forms a well-adhered film on copper materials and copper-plated surfaces. * It is compatible with thick films of 1 μm or more.

The rust inhibitor vaporizes (turns into gas) and protects the surface of the metal from rust. It is a very easy rust prevention method since you only need to place the vaporizing rust inhibitor together with the metal products! Complete sealing is not necessary; a certain degree of sealing is sufficient. ■ How to use the vaporizing rust inhibitor Simply seal the metal parts you want to protect from rust together with the vaporizing rust inhibitor. (For example, put them in a box or cover them with a bag) Complete sealing is not required! ■ Mechanism of the vaporizing rust inhibitor 1. The rust inhibitor vaporizes. 2. The rust inhibitor fills the sealed space (inside the box or packaging). 3. The vaporized rust inhibitor protects the surface of the metal. ■ Other features - No need for coating or cleaning. - The gas from the rust inhibitor reaches even complexly shaped metal parts. - Even if it gets wet due to condensation, the vaporizing rust inhibitor dissolves in water and suppresses rust.

"DAIN COPPER PSR-SZ" is the industry's first cyanide-free copper plating solution that uses monovalent copper ions. Due to the inclusion of a special complexing agent, there is no substitution with the substrate at all, and the electrodeposited film shows excellent adhesion. It has made it possible to perform cyanide-free copper plating on zinc die-cast materials, which has been difficult until now.

The non-cyanide silver plating proposed by Yamato Kasei is entirely cyan-free and of the non-cyanide type. We offer a wide range of options from matte to high gloss, allowing you to choose according to your application. 【Acidic】 "Dine Silver GPE" Series - Direct plating on resist patterns is possible without dissolving the resist. Matte: Dine Silver GPE-PL Semi-gloss: Dine Silver GPE-SB Gloss: Dine Silver GPE-HB High gloss: Dine Silver GPE-HB2 【Neutral】 "Dine Silver AG-PL30, Dine Silver Bright PL50" - Direct silver plating on copper and copper alloys is possible. Matte: Dine Silver AG-PL30 Gloss: Dine Silver Bright PL50 【Alkaline】 "Dine Silver BPL, Dine Silver HKR" - Excellent uniform electrodeposition, stability, and heat discoloration resistance. Matte: Dine Silver BPL Gloss: Dine Silver HKR *For more details, please refer to the related links below.

"See You Guard SN-5" is an electroless and replacement type tin plating bath that achieves a fast tin plating film through immersion in copper material. It is ideal for rust prevention treatment of copper materials. 【Features】 ■ Thick films of up to several micrometers can be achieved. ■ A dense film with few pinholes can be formed. ■ Due to minimal influence from stirring, plating can be done uniformly on complex shapes. ■ There is almost no foaming in the plating solution, which enhances workability. ■ It can be used over a wide temperature range. *For more details, please refer to the PDF document or feel free to contact us.

"See You Guard SN-3" is an electroless, replacement-type tin plating bath that allows for the formation of a uniform tin plating film simply by immersing copper materials. It is compatible with fine wiring. 【Features】 ■ Thick films of up to several micrometers can be achieved. ■ A dense film can be formed. ■ Due to the minimal impact of agitation, plating can be done uniformly on complex shapes. ■ Usable over a wide temperature range. *For more details, please refer to the PDF materials or feel free to contact us.

When plating silver onto a resist pattern substrate, conventional cyan baths make it impossible to form a plating film according to the pattern due to the dissolution of the resist. With the acidic "Dine Silver GPE" series, plating can be done according to the pattern without damaging the resist, and it is being adopted for silver plating on resist pattern substrates. ■ Direct plating onto the resist pattern is possible, eliminating the need for special mask processing and allowing for process shortening. ■ A wide range of options from matte to glossy is available to suit various applications. *For details, please refer to the related links below and the PDF materials.

"DAIN COPPER PSR-SZ" is the industry's first thickly applicable non-cyanide copper plating solution that uses monovalent copper ions. Due to the inclusion of a special complexing agent, there is no substitution with the substrate at all, and the electrodeposited film shows excellent adhesion. It has made it possible to perform non-cyanide copper plating on zinc die-cast materials, which has been difficult until now.

The Belzon SF-310 forms a powerful water-repellent film on all metals, including nickel, chrome, and copper plating, improving discoloration prevention and corrosion resistance. It contributes to reducing the thickness of the plating film and improving workability through water drainage. It does not have the stickiness of general rust prevention oils and does not cause adhesion of other products.

This product is a completely cyan-free type of silver alloy plating that is environmentally friendly and safe for humans. For electric vehicle (EV) charging connectors, it is necessary to carry a large current to shorten charging time, which requires a metal plating coating with excellent wear resistance. This product has a contact electrical resistance comparable to that of pure silver plating and provides a silver-antimony alloy plating coating (Sb = 1-2%) with excellent wear resistance and a hardness of over 150 Hv (measured value around 180 Hv). Therefore, it can be applied to various contacts and switch components, including EV charging connectors.

【Features】 - When used as a base for gold plating, it suppresses corrosion compared to using nickel plating as a base. - It is a non-cyanide sulfuric acid bath. - A uniform glossy appearance can be achieved over a wide range of current densities. - Thick films are possible. - Compatible with rack plating, barrel plating, and hoop plating.

【ZnNi Plating High-Speed Type】 - Plating at high current density is possible, with a fast deposition rate. - There is almost no consumption of additives, making management easy. - A uniform matte appearance can be achieved. ⇒ This contributes to reducing total working time, such as plating time and analysis time, leading to cost reduction. 【Rust Preventive Oil for Dissimilar Metals Type】 - Ideal for joints and overlaps of dissimilar materials, as well as for various metals where cracks may occur in the plating film. - The application process is a room temperature process that is quick, reducing environmental impact. - Maintains external dimensions. ⇒ Contributes to miniaturization of components and cost reduction. (Not only for plating and Geomet treatment, but also serves as an alternative for insulation treatments like anodizing, painting, and coating.) 【Coating Heat-Resistant Type】 - Can form a film over various metals and surface treatments such as plating, anodizing, and thermal spraying. - A transparent coating layer with heat resistance and corrosion resistance can be obtained with a thin film. - It is a one-component system with good liquid stability. ⇒ Features a heat resistance temperature of 1000°C, contributing to xEV development.

【Features】 - It is an alkaline type non-cyanide silver plating solution. - A stable film appearance can be achieved. - Excellent adhesion (equivalent to cyanide baths). - Available in a range from matte to glossy finishes, allowing us to propose a solution that meets your requirements (Vickers hardness Hv 60-110). - Heat resistance is improved compared to conventional baths. - It has a proven track record in heavy electrical component applications both domestically and internationally, so you can use it with confidence.

This is a non-cyanide silver plating bath that does not use cyanide compounds. By not using toxic substances such as cyanide compounds or selenium, it reduces the risk for operators and in the event of a leak. Additionally, since it is not a toxic substance, strict chemical management and special wastewater treatment facilities are not required. With a wide range of products available, we can offer various options tailored to our customers' needs.

【Discoloration Prevention Performance】 ■ Suppresses discoloration when copper materials are heated (140–200℃). ■ Suppresses discoloration at high temperatures and high humidity (>70℃, >80%RH). 【Other Features】 ■ A water-soluble, non-chrome product that contains no inorganic components, making it environmentally friendly. ■ Does not significantly adversely affect the contact resistance of copper surfaces. 【Examples of Use】 ■ Copper-plated products, copper foil, copper wire. ■ Rolled copper foil, electrolytic copper foil (for printed circuit boards, lithium-ion battery anodes, etc.). ■ Alternative to chromium treatment for copper foil. ■ Suppresses discoloration during heating in post-processes such as reflow and soldering.