JPS59500221A - Powder used in dry activation process for electroless metallization - Google Patents

Abstract

A catalytically active powder, its preparation, and its use for activating insulating substrates to receive electrolessly deposited metal in a coherent metal layer are described. The powder of the invention comprises a plastic powder containing catalyzing/activating chemical compounds allowing that the acceleration of the catalyst is not carried out until the powder is melted down onto the substrate. The substrate need not be etched prior to the metallization since the plastic melted down ensures a good adhesion between metal and plastics and between plastics and substrate. Furthermore, the colloidal nature of the catalyzing compounds is stabilized in a particular and especially durable manner by the plastic powder. The use of the powder causes less risk to the environment since the catalyst may be applied as a dry powder, and since the etching of the substrate is avoided.

Description

[Detailed description of the invention] for electroless metallizing Powder used for dry activation treatment Technique Min’Jf The present invention provides a catalytically active powder, a method for its preparation, and an insulating support using said powder. The present invention relates to a method for activating Sla-based metal layers to receive electrolessly deposited metals.

Background technique Catalytically active powders suitable directly for activating electroless metallization include: previously unknown.

For example, when attaching an insulating support such as plastic to a metal plate, the following steps are required: It is possible to use a method. That is, by evaporating the metal under vacuum, the conductivity/7tl If+ is deposited followed by metal electrodeposition and electroless metallization. The latter is , in addition, electrolytic metallization can be carried out subsequently.

``N,'' M metallizing is metallizing applied to processed brass nut. It has also come to be widely used in the electronic field of f and ki. Air force The disadvantage of the known method of clarification is that it requires a series of wet processes in commercially available equipment. It consists in sufficiently adhering the metal layer to the surface of the support through a treatment step. those The processing process is often carried out in the following steps. . In other words, etching and neutralizing sensitization, activation, acceleration, and electroless metal deposition. This is the procedure.

In many processes, sensitization and activation constitute one processing step. So The reason is that these steps are for positioning the catalytic species on the support surface. and the species is present in the metallizing bath from the bath to the metal deposition that takes place. It has a catalytic effect. Such a catalyst can be used in one step to produce an electroless metallurgical It sensitizes and activates five insulating surfaces for It consists of a mixture of nCLz and PdC, a so-called palladium-tin mixture.

This system generally includes a colloidal aqueous solution. The reason is that if you don't do it like this , as the precipitation reaction occurs, the catalyst action deteriorates and is destroyed over time. This is because it is important to stabilize the system.

The patent literature states that this support acts as an insulator, making it susceptible to metal desorption. Reference is made to both organic and aqueous solutions that can be used. den The detailed specification No. 132.801 printed and accepted in Mark states the following: It is written that. In other words, in 41 organic solvents, are there any periodic genus or IB genus? It describes how to create compounds or mixtures of elements that are reversely refracted; The adhesive may also contain an adhesive, may moisten the support, and may catalyze the formation. It can also be activated. German published application no. 2638457 also Contains binders, metal compounds/substances, complex builders and reducing agents to produce printed circuits describes aqueous catalytic lacquers used for

Upon application and drying, the metal compound is deposited as a metal species. This species is , which can also be further strengthened by electroless metallization. The aqueous solution is sparse. A drawback has long been the difficulty of wetting water-based plastic supports. It was. This drawback is due to the so-called two-step process in which the sensitization step and activation step are separated. This is particularly recognized in the case of Regarding this, see, for example, U.S. Patent Specification No. 4. No. 042.730, further details William Cold (llIillia [Metallic coating on plastic] by mGolde Coating of Plastics) J (7) f? J, 19. Especially that See Chapter 5. Danish Patent Application No. 1507/73, No. 4277 /80 and No. 3300/81 (Patent Application No. 57-127777) are insulation A method and powder for dry sensitizing the surface of a support are described.

These methods and powders have several advantages compared to the current state of the art, especially for metals. related to the distribution of adhesion, and cost reduction due to metal adhesion. has advantages. In this regard, sensitization is the process of attaching a compound to the surface of a support. shall mean one processing step. This compound contains an activator/catalyst The activator/catalyst is attached to the support by electrical treatment through contact with an aqueous solution. let

Another way to catalyze a support for electroless metal deposition is to add solid particles to the support surface. Desire to have children. , the solid particles are catalyzed for electroless metal deposition. ing. The systems described above most preferably contain colloidal particles, and such As a system, there are those containing precious metals and other containing non-noble metals that have similar effects. system is known. Aqueous SnCL2/Pd’Ci2 catalysts are the most frequently used It will be done. The reason is that a highly stable aqueous solution can be obtained. rice National patent! No. 3.01i, No. 920 describes the preparation of such colloidal catalysts. The colloidal catalyst is treated with an acid or Facilitated by adding base. For preparing optically clear liquids The solid catalyst mixture used is as shown in U.S. Patent No. 3,672,923. has been done. Such systems generally suffer from a lack of long-term stability. The literature in the field is extensive on the effects of sutra deterioration and the importance of using accelerator solutions. It talks about. For electroless metallization only, the accelerator solution is acidic. or a solution of a chemical with an alkaline reaction, activated support Its action on promotes the initiation of electroless #metal deposition. In this regard, the catalyst solution The liquid may additionally have an activating effect on the dissolved catalyst powder. this child In conventional commercial equipment, the catalyst solution is processed by the addition of chemicals before use. Related to the fact that it is activated. The actual workings of these systems remain questionable. There is a discussion about it, especially in the Journal of the Electrochemical Society (Jour, Elect). rochem.

Sac’) November 1980 issue, page 2443 onward T-Osaka (T, “PdC or 2/S used for electroless plating” by Q.s.a.k.a. et al. n Electron diffraction study on C12R gold catalyst (AnElectron Diff ration '3tuay on Mixea PdCJLz/SnCmata2 Catalysts for’r Electroless Plating) J 5 and lI5], Q1'380 December issue y page 2652 onwards R.Z. ``%'111!, Demetallization Deposition'' by R. Zeblenski Research on activation and promotion by PdC1zlSnC mixed catalyst used for (A 5 study on Activation and Accelerati on by m1xed PdC9-z/5nC1z CatalyStsfo r　Electtales　Metal　Depositiop) J to Akira It is a sword). It has long been desired to improve the stability of PdC/SnC catalysts. This means that such catalysts have widespread use in processes in t-electron technology. Because it gives you a way. These two, in particular, U.S. Patent Specification Part 4.187 , No. 198 and U.S. Pat. No. 4.2+2.7138. this Regarding the effect of catalysts, the tannification of elemental noble metals (e.g. Pd) in solution It can be stabilized by compounds.

Non-precious metals as shown in U.S. Patent No. 3,9LJ, 793 Systems containing colloidal particles of It has been shown to act as a catalyst for genus attachment. In relation to such systems However, it has been difficult to obtain high catalytic activity and good stability at the same time. US patent specification No. 3,958,048 explains how colloidal properties disappear within 24 hours. It is written about this.

U.S. Pat. No. 4.1fi7,596 describes stabilizers, surfactants, and This application describes the use of colloids with the addition of reactive-modifying compounds. support After infiltrating the support into such a colloidal system, Qt containing the reducing compound is subsequently added. Later, during the night, the support was wetted (1) for rough approval. Separately from doing so, such a process involves hitting it selectively. However, there is a drawback that there is no chi. The patent text is how to improve adhesion. It is described in the dedication. See in particular U.S. Patent No. 4,233,344. In most cases, hydrazine/X-Idrate is used as the adhesion-improving side. Ru. See U.S. Pat. No. 4,220,678. Changing the H head changes the charge on the colloidal particles and increases the attachment of said particles to the support. Affects wear.

Therefore, it is important to improve the adhesion between the colloidal catalyst system and the insulating support. and, if desired, carry out electrolytic metallization with the specified butter/ There was a strong demand for the use of compound catalysts.

In addition, manufacturing durable chemicals used in electroless metallization And it is very important for commercial purposes.

Demonstration of invention It is used for fine-grained and free metallization of plastic materials. 1 or 2 or more containing 1- compound W and a surfactant; and self-registered surfactant amount, respectively, calculated based on the plastic material, 0.2 to 213 wt% and 0.1 to 100 wt%, melted on the support and During acceleration prior to electroless metallization, the powder or molten positive Limited by the distribution of molten plastic powder adhering to tick powder. The powder according to the present invention is characterized in that the powder is formed into interlayers having interspersed boundaries. Therefore, it is obtained.

Claim 2 further describes the composition of powders active against % electrolytic metallurgy. We deal with catalytically active compounds that have proven to be particularly suitable as agents.

Claim 3 states that the metallizing bath is unstable. Claim 4 states that the present invention PdCIL2/SnClz that can be used as a compounding agent for powders related to light We handle ljl commercially available catalysts.

Claim 5 provides that the active compound for electroless metallization comprises colloidal particles. As a child, we deal with powders that are dispersed in plastic materials.

Claim 8' provides that a metallizing bath is used as a compounding agent in the molten powder. an interface that ensures good contact between the Deals with the composition of activators.

Claim 7 provides that a magnetic material is suitably mixed into a powder, so that the powder has magnetic properties. Transferred magnetostatically in a controlled manner by a brush device or electrostatically Become charged.

Claim 8 deals with a method for preparing a powder according to the invention, said method comprising: This ensures uniform distribution of the catalytic compound to each of the powder particles.

Claim 9 provides that the plastic suspension is spray-dried, thereby producing a uniform It is shown that a powder having a size of particles can be obtained.

Claim 10 provides that prior to drying the plastic suspension, a reducing compound is applied. and the metal adhesion is improved by the reaction of the reducing compound with the catalytically active compound. state what will happen.

Claim 11 provides that the powder fused to the support is salt-acidic or alkali-based. Improving the adhesion of metals and molten plastic powders by handling them in a neutral medium This article describes how to improve the adhesion of metals to metals.

Claim 12 provides that the powder is suitable for obtaining metallization of an insulating support. State that.

Claim 13 provides that the powder can be electrostatically transferred to the support. Show that you can do it.

Claim 14 provides that the blended magnetic compound ensures magnetostatic transfer. state something.

Industrial applicability Powder of plastic powder formed by known PdCILz/5nC1z catalyst is , after melting the powder on a support and applying appropriate acceleration, it has good adhesion. It is said that the metallization is done with a clear metallization boundary. It has some characteristics. Such powders offer woody improvements compared to the prior art.

Therefore, unlike the conventional wet treatment that accelerates the catalyst, this method The invention is based primarily on the fact that acceleration takes place only after the powder has been melted onto the support. Due to this, the durability of the catalyst compound is significantly increased. Conventionally, the powder was Forms of catalytic plastic powders, whether containing metals or non-precious metal compounds It is not recognized that considerable advantages can be obtained by using catalysts such as won.

For example, in order to form a cavity, avoid etching the support and its cavity. The catalytic compounds may be wicked up to ensure good adhesion.

, Furthermore, the colloidal nature of the powdered catalyst compound according to the invention depends on the fine-grained grain used. Stabilized into a specific form by a plastic powder.

In addition to the tin compound, the catalyst compound in the powder according to the present invention includes a periodic group metal, i.e. iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium. It may also contain a desired compound of um. Here, tin has an oxidation number of +2 within the possible range. Others exist. In addition, the catalytically active compound is selected from copper, silver, and gold in group B of the periodic system. Something will happen.

When the catalyst compound is a complex compound, acidic or or it may be necessary to use an accelerator that can be alkaline. . When using a commercially available catalyst of the PdC pattern z/Sr+C1z type, an aqueous solution of salt vinegar (For example, 1:2 of concentrated HC and H2O) is suitable as an accelerator. like this Then, the stabilized alkali halide is separated from the molten catalyst powder. This results in a more water-permeable surface.

In the subsequent metallizing process, this increased surface porosity As a result, the metal adheres extremely well to the molten plastic powder.

In order to prepare the powder according to the present invention containing 5n-Pd catalyst, in one ring mound, It is desirable to form a complex with PdCJL2 using an alkali halide. Not good. The reason is that this can result in very large powders. This is because that. However, U.S. Patent Specification No. 4□, No. 212,788 is halides, such as CaC1z, et al.H20'? 3yohiLaCu3,7i( 20 states that it is important to apply it. CaC odor 2,6H20 and PdC1z The use of double salts is particularly advantageous for the powder according to the invention. because, This is because a very electrostatically charged powder is thereby obtained. For example, shiso Conventional 5n-P like 9F of Play Company ('5hiplay Carp) As another method to eliminate the non-drip property that occurs when using powder containing da7 medium, Use plastic milk in-liquid for jet-pulverized powder. There is. In this way, the concentration of double salts containing active metals is reduced ↑ compared to conventional non-electrostatic In the field of metallization it is common to add surfactants to the baths used.

Support surfaces can be activated for electroless metallization and contain surfactants. So far, it has been shown that the effectiveness can be improved by using powders that can It wasn't recognized. The hydrophobic portion of this surfactant is the most Adheres to hydrophobic plastic materials that have a woody component. At the same time, the plastic The hydrophilic nature of the molten powder and the aqueous medium ensures becomes good.

Particularly for commercially available catalysts of the PdC/5IIC12 type, significant Benefits can be obtained. That is, the powder according to the present invention is melted, and the molten powder is The above-mentioned catalyst is used until the support having the This is because the medium is not activated for electroless metal deposition. As a result, powder and Both plastic films formed with said powders are previously unknown. It shows excellent durability.

The method for preparing the powder according to the invention comprises: a micronized plastic material; Alternatively, surfactant plastic materials prepared by emulsion polymerization in aqueous media After mixing with an aqueous dispersion of the agent, the catalyst compound is added and the desired acidity is adjusted. The method includes a step of drying the product by, for example, spray drying. Related to the present invention The method is that it is carried out in an aqueous medium, and that the colloidal particles present therein are or the precursors for such particles may be especially surfactant-influenced. As a result, each plasticine acts as a stabilizer and cement during the melting of the dry powder. It has the characteristic of strongly adhering to the surface. The cement Y is the surface of the support. to combine activating/catalytic compounds for electroless metallization. aqueous medium furthermore benefits from the presence of partially hydrolyzed, oxide-containing compounds. have This compound is applied to the surface of the powder particles by dissolving it, for example through a spray drying process. can be melted, thereby improving the wettability of the fused powder.

The preparation of the powder according to the invention containing non-noble metals may be accelerated by the inclusion of stabilizers and in a suitable manner. This can be done on the basis of commercially available solutions that can be Precipitate the colloidal particles by the addition of a reductive surfactant and a pillow-staining agent. can be set. In the subsequent drying process, the colloidal properties become catalytically active. It is stabilized in a specific form on the surface of each powder particle as islands of compounds.

Compared to the prior art, the powder according to the invention can be applied directly can be done. The powder is melted to properly adhere to the support. catalytic compounding ・If the material is stable enough that electroless metallization cannot be started directly, acceleration is possible. It can be performed. Such acceleration involves placing the molten powder on a support in an acidic manner. Alternatively, it includes a step □ of making it subject to the action of an alkaline medium. As a result, catalytic The compound is activated for electroless metallization. Plus a more porous structure is obtained, thereby further improving the adhesion of electrolessly deposited metals. After It is possible to increase the thickness of the metal layer in electrochemical processing (galvanic process). It is Noh.

In adjacent fields, such as photocopying, magnetic one-component toners are becoming increasingly popular. It has been used for a long time. To use the invention in a device using this principle, the claims must be made. Magnetic materials, such as iron oxides, consisting of powder particles according to scope 7. powder, the particle size of which is typically less than 2.58L. It can be prepared. In addition 1, e.g. by adding formaldehyde, e.g. , reducing the palladium salt dissolved in the slurry of particles to the particle surface; A thin layer of palladium can be precipitated onto these particles of magnetic material by Ru. These particles of magnetic material are said to have a thin layer of palladium on their surface. or, for example, Piferronx 88'OO (Beyer Chemistry)’ (Bayfer’rox 8800 (Bayer Chemie)) Even if it is a commercially available powder such as The powder according to the invention is investigated as containing particles of magnetic material in each powder particle. can be manufactured. These particles form a slurry in the plastic emulsion. and the emulsion contains one or more catalytically active compounds and surfactants. Conveniently, it is possible to add Here, the surfactant allows The hydrophilicity of the prepared powder is improved when the powder is melted onto an edge support. .

Thus, in the present invention, a It is possible to achieve good adhesion of the support as well as to achieve non-porous integration. The present invention provides a catalytically active powder that has novel capabilities. The stability of the prepared powder is , and using the powder according to the present invention, it has been verified that the powder is good. By transporting the catalyst in the electroless metallizing tank, liquids that are harmful to the environment are Instead of transporting, it can be done by transporting stable powder. This point is also very important from the point of view of pollution.

Best mode for carrying out the invention To further explain the preparation and use of the powder of the present invention described above, For this purpose, examples of the present invention are shown below: 16 Powder containing the following ingredients styrene plastic (Hercules Crop,) (7) Piml Plastic 0125 (Piccolasti* D!25) 100gPdC1z O,1 g 5nC12,2H20 (All Sn-compounds were converted to equivalent SnC + 2% 0) 5 g Surfactant (ICI-Atlas Subay60 (S) pan80)) 0.4g Example 2 Crushed 100g of plastic material (Piccolastic 0125) Milled in a Trost jet mill as described in Example 1. Prepare the powder. Finely ground powder is added to 4% of the weight of the plastic material. slurry in an aqueous dispersion containing a corresponding surfactant. I saw SnC, Weigh out 5g of 2H20, heat it to 95°C, then add 0.1g of 5nCk. . Cool the mixture, crush it, dissolve it in water, and add this aqueous solution to a small amount. Add to tick suspension. After adjusting the pH value to 8 with ammonia water, Spray dryer (NIRO sprayer Minor) Spray drying is performed using Here, the rotational speed of the atomizer wheel is 35,0OOr , p, m. At that time, hot air 1 ellipse If 59-500221 (6') and The and outlet temperatures were 180°C and 8°C, respectively.

Example 3 Powder containing the following ingredients Piccotoner 1200 (Hercules) Catalyst 9F (Catalyst 3F) (Shirapray) At? −122 (Atmer 122) (ICI Atlas) 1 case no A powder as described in Example 3 was added to a liter of oil body as a surfactant. To an aqueous dispersion containing 0.3 g of Mar 122, 10 g of crushed Picco Toner-1200 was added. Prepare by adding 0g. PdCJLz/SnCJ manufactured by Silapray , 1 liter of the amount corresponding to 5 g of solid Catalinut 9F, a type 2 commercially available catalyst. The pH value is adjusted to approximately 6 with a normal NaOH4f solution.

Add the diluted catalyst solution to the plastic suspension while stirring well. 6 Adjust p)l to 7 with standard NaOH and dry in a spray dryer (Niro sprayer model). Perform spray drying using a vacuum cleaner (Le Minor). where the rotational speed of the atomizer wheel @35.000’r, p, a+ binding, at that time, adjust the hot air supply speed and amount appropriately. Adjust the inlet and outlet temperatures to 180°C and 80°C, respectively. When using the powder as described in Example 3, such powder is Fully or partially applied to the edge support. Serigraphic mass of powder transferred by electrophotography or other methods, and then melted at a temperature of 140°C. melt. The support with the molten powder is mixed with concentrated salt alcohol and water in a ratio of 1:3. Immerse in the solution for 8 minutes. Subsequently, it is placed in an accelerator solution (Silapray 198). for 3 minutes, rinse, and methane in a Silapray 238 electroless copper bath at room temperature. Rise powder containing the following ingredients i Lucudi-21 (Org-D-2i) (Herculene) lot 1g AgNO37.5g Atomer 114 (ICI Atlas surfactant) 0.3g Example 7 Powder containing the following ingredients Orgude (--21 (Org-D-21) (Hercules) long CuCIL2,13H208,0g Atomer 114 (ICI Atlas surfactant) Q, 3 g The powder described in Example 6 was prepared by trost jetting 100 g of plasticine material. - Prepare by grinding in a mill. The finely ground powder is Slurry in an aqueous liquid containing a surfactant (Atomer 114) in an amount equivalent to 3%. - to become Add the desired amount of metal salt aqueous solution and then dilute with 6N NaOH. Adjust the pH to 8. Next, the plastic suspension is sprayed in a spray dryer (Niro). Dry using a container (Model Minor). Here, the rotation of that sprayer wheel The speed is 35.00 Or, p, m. At that time, the supply speed and amount of heat/air By properly adjusting the inlet and outlet temperatures, respectively, 170°C and 70°C. It was set to °C.

Example 8 Powder preparation as described in Example 7 was carried out in the same manner as in Example 8.

Powder of plastic material containing chemical substances is added to the powder equivalent to 3% of the weight of crude plastic. 1 in a dispersion of a surfactant (Atmer 122 from IC Atlas) in an amount of By slurrying 00g of plastic material (Piccotoner-1200), It was prepared as follows. Mix an aqueous solution containing 8 g of CuCl21, and stir well. Add another 2 g of an aqueous solution of KBH4 and then boil at 6N until the pH reaches about 3. Added NaOH solution. The plastic suspension thus obtained was dried in a spray dryer ( The rotational speed of the Coro sprayer model Mile was 35.00 Or, p, m. So During the process, the supply speed and amount of hot air are appropriately adjusted to maintain the inlet and outlet temperatures. were set at 200'C and 80°C, respectively.

cusp m Aqueous plastic emulsion equivalent to 100 g of solids (Hebariless's dressing recipe) 0.3 g of surfactant (ICI-Atra) 60) of water was added to the dispersion. While stirring well, check that the particle size is 0. ．． 51j, less than 30 g of Fe3O4 was added to the above. moreover, Add an aqueous solution of Catalyst 9F (Silapray) in an amount equivalent to 4% of the solid content. Adjust the pH to 8 using 6N NaOH, then use the two-mouth sprayer model. Spray drying was performed using a miner. The rotational speed of the atomizer wheel is 35, 0OOr, P, II, and adjust the supply rate and amount of hot air appropriately to maintain the inlet temperature. degree and outlet 1 temperature were 160°C and 65°C, respectively.

4’A tsubo at the tip Powder containing the following ingredients Piccotona-1200 (Hercules) 100gP, dC branch, 0.4g CaC1z, 8H202, 8g 5nC 2.2H, 02.8g Atomer 121 (ICI Atlas) 0.3g Example 13 The method of preparing the powder as described in Example 12 included the following steps. 0.4 Dissolve 8 of PdC in 2.88 of CaCl, BJO and dissolve at 95°C. It was kept in that state. After 15 minutes, add 2.8g of Sr + 01g, 2H,0. Ta.

This solution was now added to the plastic suspension. This plastic suspension is 100g of Piccotoner 1200, which has been jet crushed in advance, is distilled into 500ml. It is slurried in water and contains 300mg of surfactant atomer. 121 (ICI-Atlas) was dispersed. By using 6-N NaOH, Adjust the pH to 8 and spray dry using a two-mouth sprayer model Minor. I did it. Here, adjust the rotation speed of the sprayer wheel to 35.0OOr, p, m. By appropriately adjusting the supply rate and amount of hot air, the inlet and outlet temperatures can be adjusted to The temperatures were set at 180°C and 80°C, respectively.

Example 14 The powder prepared by the method described in Example 11 was transferred to a photocopying device. , whereby the powder containing the magnetic material was electrostatically transferred to the photosensitive master.

The master may be a polyester film coated with a photosensitive material. Positive High voltage 2. Electrostatically by irradiating light onto a photosensitive surface charged to ’8kV The resulting image was imaged using a conventional magnetic brush device held at ground potential. was formed by. The electrostatic image obtained in this way is transferred to the electrostatic image by charging the support. It was transferred onto an insulating support by.

Example 15 The powder prepared by the method described in Example 11 was coated with CrO2 having a magnetic structure. It was used to develop a polyester film. On that film is xeno A magnetostatic image is created by illumination with a flash lamp. This passing During this process, light was applied to the Cr02-coated magnetized film through the photographic film. irradiate. In this photographic film, light passes through bright areas of the film and becomes magnetized. The film was then heated to a temperature above its cusp point. The development is called “powder By "cloud" technology (powder cloud in the air flow) conduct. The powder particles adhering to the magnetized film are subsequently exposed to a voltage of approximately 20 kV. Transferred onto an insulating support brought to a positive potential.

Example 16 Powders as described in Examples 1, 3, 6.7 and 11.

Next, electrostatic transfer was performed as follows. Customary equipment for carrying out electrostatic powder transfer Inside the powder was electrostatically charged to a voltage of 2.2 kV. Supported by air flow The powder is transferred to a support, and then the support is heated to a melting temperature to melt it. Ta.

Real skin Ibiki V- It has the composition as described in Example 12 and as described in Example 1 Example 13. The powder prepared by (a customary carrier for use in the industry) in a weight ratio of 2:1O. customary magnet In an air brush device, such a developing mixture transfers the electrostatic latent image to a photosensitive mass. visualized on the tar. This master has a negative high voltage of 3 by conventional corona discharge. ．． It was charged to 2kV and then selectively illuminated with a pattern. insulating support electrically charged so that the particles are transported by attraction from the photosensitive master. Transcription was performed. Conventional methods involve fixing the particles to an insulating support and forming an electroless metallizer. I was doing zing.

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Claims (1)

[Claims] 1. In the powder used for dry activation treatment for electroless metallization, Fine particles of plastic material and one or more electroless metallizing circular compounds a catalyst and a surfactant, wherein the compound and the surfactant meet both components. 0.2-20% by weight and 0.1-1% by weight, respectively, calculated on plastic material of electroless metallizing characterized in that it is present in an amount of 00% by weight. Powder used for dry activation treatment. 2. In the powder according to claim 1, the catalytically active compound is tin having an oxidation number of +2. In addition to tin compounds containing iron, cobalt, nickel, ruthenium, rhodium, and Compounds of metals derived from Group VI of the periodic system such as radium and iridium A powder characterized by: 3. In the powder according to claim 1, the catalytically active compound contains iron, cobalt, A powder characterized by the presence of nickel, copper and silver. 4. In the powder described in claim 1 or 2, PaC/Sn A powder characterized in that a C12 type commercially available one-component catalyst is used as a catalyst compound. 5. In the powder according to any one of claims 1 to 4, the powder The stick material is a styrene/acrylic copolymer resin and the catalyst compound is A powder characterized by comprising colloidal particles dispersed in a plastic material. 6. In the powder according to any one of claims 1 to 85, the interface The activator is a mixture of glycerol monostearate and glycerol distearate. the mixture comprising 3% by weight of the plastic material. A powder characterized by: 7. In the powder according to any one of claims 1 to 6, A powder characterized in that it further contains a fine magnetic material. 8. For preparing the powder according to any one of claims 1 to 7. prepared by emulsion polymerization in finely divided form or in an aqueous medium. The amount of surfactant in the produced plastic material is calculated by the amount of plastic material. 0.1 to 100% by weight aqueous solution or dispersion, then plastic material One or more catalyst compounds are added in an amount of 0.2 to 10% by weight, calculated on the amount of material. and roughly adjust the acidity to a desired level, and then dry the resulting mixture. powder preparation method. 90. In the method according to claim 8, the spray drying method 26 A method characterized by performing drying by. IO1 In the method according to claim 8 or 9, a catalyst is added before drying. A method characterized in that a reducing agent is added to the compound. 11. A method of using the powder according to any one of claims 1 to 8. The molten powder on an insulating support is immersed in an acidic or alkaline medium. A method of using a powder characterized in that it is subjected to an accelerated treatment. 12. The powder according to any one of claims 1 to 8 and 11. In this method, the entire surface of the support or the area to be metallized is coated with powder. The powder is melted, accelerated and then electroless, known per se, The use of powder, which is characterized by metallizing by solution metallizing. I left. 13. The method of use according to claim 12, in which the powder is electrostatically transferred to a support. Method of using powder characterized by copying. 14. The powder according to claim 12 with respect to the powder according to claim 7 In the method of use, the powder is magnetically attached through the action of magnetic poles previously provided on the support. A method of using the powder, which is characterized by applying the powder to the skin. 11joti, ff59-500221 (2)