JPS5896586A - Printing and coating composition for organo-silicone- based print film - Google Patents

Abstract

PURPOSE:To obtain a printing and coating composition having a strong adhesiveness by a method in which a specific pretreating liquid is coated on an organo-silicone compound film, and cleaned with a specific cleaning liquid, and then ink and paint films are formed on the film. CONSTITUTION:On an organo-silicone compound film covered on a thermoplastic resin plate or molding, a liquid mixture, obtained by adding a halogenated hydrocarbon with a silicone-based chloride (e.g., SiCl4, etc.) or a boron-based fluoride (e.g., BF3, etc.) to a mixture of a polyhydric alcohol (derivative) (e.g., ethylene glycol, etc.) or (unsaturated) saturated monovalent alcohol (e.g., isopropyl alcohol, etc.) and a halogenated hydrocarbon (e.g., methylene chloride, etc.), is coated and then cleaned with a mixture of a halogenated hydrocarbon and a lower alcohol, and then the dried surface is further coated with an ink and paint to form a paint film. The paint film is strongly bonded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to printing or coating on synthetic resins with a highly hard organosilicon coating layer unraveled on the surface, and on fibers with an organic silicone coating layer treated with silicon. It is about things that have been done. Conventionally, when printing or painting molded materials such as methacrylic, styrene, and ABS, which have the lowest surface hardness of plastics, scratches occur during the process.

The product value was severely damaged, and the scratches had to be removed by puffing or mechanical methods. To solve this problem, products with organic silicon-based coatings were created, and various attempts were made to print or paint them in order to increase the galvanic value, but they did not adhere well to any Σ ink or paint. It was easily peeled off in the tape peel test and scratch test.

Therefore, these matte and transparent coatings with high hardness coatings cannot be printed or painted, so demand has been limited. The same was true for fibers treated with silicon.

The present invention aims to solve these shortcomings.As a result of intensive research, printed matter and coated matter using ink having strong adhesive properties on the surface having these coating layers have been completed. The above objects are achieved by the invention described below. The present invention relates to organic silicon coatings coated on plastic plates, plastic molded articles, such as vinyl chloride plates, methacrylic plates, styrene plates, polycarbonate plates, ABS plates, and other thermoplastic resins and molded articles. A pretreatment solution that is effective for activating the layer is silicon tetrachloride, ethylene glycol, which is a polyhydric alcohol, and methylene chloride, which is a halogen hydrocarbon, at 40°C to 60°C for about 1 to 2 hours. It is produced by reacting it and then leaving it for a day or night, or it is produced by the reaction of silicon tetrachloride with a small amount of hydrogen fluoride, a -hydric alcohol such as improvyl alcohol, and a 710-gen hydrocarbon, methylene chloride. It can also be made from things. In addition, when using dry evaporation type, oxidative polymerization type, -liquid curing type, two-liquid reaction type, ultraviolet curing type, water-based ink, water-based paint, etc. with a small amount of silane coupling agent added, Furthermore, it exhibits stronger adhesion and improves the physical properties of the coating film. Screen printing, offset printing, gravure printing, etc. can be applied as printing methods. In the case of paint, spray painting, brush painting, etc. can also be applied. Adhesive effects can be obtained even if only the ink and paint containing the silane coupling agent are used as described above, but using a pre-treatment liquid, apply the film evenly to the surface, leave it for 5 to 50 minutes, and then apply the methylene chloride-containing ink or paint. If the surface is wiped or washed with grade alcohol and then printed and painted after drying, it shows even stronger and complete adhesion.

In particular, we have shown good results with highly hard materials with anti-glare effects (non-glare), which have recently been attracting attention along with conventional transparent organic silicon coatings. Demonstrates adhesive strength. It is also possible to print and paint fibers treated with an organic silicon coating.

Therefore, it can be used in a variety of applications, such as nameplates for electrical appliances, fluorescent light covers, glass substitutes, cosmetic containers, automobile instrument front panels, dial plates, and general displays if it is non-glare. It can also be used to decorate textile silicone processed products, and is expected to open up new uses through painting and printing. Next, the present invention will be explained in detail with reference to Examples.

Example I Methylene chloride (dichloromethane field f12) 3
Mix and dissolve 0 parts of butylene chloride and 45 parts of butyl alcohol, and charge this into a reaction vessel equipped with a cooler and a stirrer. While cooling the solution in which 5 parts of silicon tetrachloride was dissolved in 20 parts of methylene chloride, 20 parts of silicon tetrachloride was dissolved. Add dropwise to keep the temperature at ~60°C, react for about 1 to 2 hours, and after the reaction is complete, transfer to another container.
After it becomes transparent after being left for day and night, leveling agent and penetrating agent are added. The resulting pretreatment liquid was translucent and milky white, with a viscosity of 11 centipoise at 20°C. Using this solution, methacrylic 30CIX150 coated with organosilicon resin was used as a printing material.
Apply it evenly on the surface of 2% square and 2% board thickness, about 5~
After allowing it to stand for 30 minutes, it was wiped or washed with a mixture of 50 parts of dichloromethane and 50 parts of isoprobil alcohol, and then dried thoroughly. ,ps
-911 black) and screen printed using 80% after printing.
It was dried by heating at ℃ for about 5 to 10 minutes. Immediately after drying, the paint film was subjected to a tape test using the Cloth 7 Sochi test.Various tests were carried out, including boiling tests, methanol immersion tests, water resistance, and weather resistance, and very good results were obtained. Ta. In addition, in case of untreated area, Example 2: Using the pretreatment liquid of Example 1, treat the surface of a 5% methacrylic plate with an organosilicon film in the same manner as before, and then apply two-component screen ink (Teikoku). Ink Co., Ltd.
K, a silane coupling agent, is added to the product (PS-166 white).
BM503 and KBM602 (Shin-Etsu Chemical) from 0.5
Screen printing was carried out after adding 1 liter. The physical properties of the ink coating after drying were even better than in Example 1, and the adhesion was further improved, and there was no abnormality in the ink coating even when subjected to a 180° bending test. Untreated, unmodified ink Example 3 Evaporative drying type ink Qp-22 (manufactured by Seiko Adnons Co., Ltd.) red 100 parts and KBM-602, a silane coupling agent, were applied to a methacrylic 2% plate with an organic silicon coating.
, KBM-503, and 0.5 to 1 part of each were screen printed and dried by heating at 80° C. for 10 minutes. The resulting ink film had a hardness of H, was highly flexible, and had good adhesion.

Example 4 40 parts of methylene chloride and 40 parts of offyl alcohol
1 part of trifluoride was dissolved in 10 parts of methylene chloride.
The mixture was added dropwise to maintain the temperature at 20 DEG C., allowed to react for about 1 to 2 hours, and after the reaction was completed, it was transferred to a separate container and left to stand day and night.The light brown liquid had a viscosity of 20 centipoise at 20 DEG C. This solution was applied to a styrene molded product with an organosilicon coating film, left for 5 to 10 minutes, then wiped off with methylene chloride-containing alcohol, and after drying, Cericol 5000.9
It was printed in 11 black (Teikoku Ink product). Furthermore, KBM-'5o3, a silane coupling agent, is added to this ink.
Printing was done using ink containing KMB602 (Shin-Etsu Chemical), and the adhesion and physical properties of the coating were better than last time. In this case, he was also the youngest brother.

Example 5 The same printing material as in Example 4 was treated in the same way as before, sprayed with Cambeniazole lacquer (Kansai Paint Products), and a coating cross test was carried out with various inks except for the above examples. An adhesion test was conducted for paints and paints, and all of them peeled off without exception, but printed matter and painted objects using pretreatment and modified ink or a combination of pretreatments adhered strongly without exception, and their physical properties were improved.

Patent applicant Yuzo Kafuji (

Claims (1)

[Claims] Polyhydric alcohol and its derivatives or saturated and unsaturated monohydric alcohols and halogen hydrocarbons are mixed on a film of an organic silicon compound, and this contains silicon chloride or boron fluoride. After coating a mixed solution in which hydrocarbons are added and reacted, it is washed with a mixed solution of a halogenated hydrocarbon and a base alcohol, and then dried, and a coating film is formed on the surface with ink and paint. Printed matter and painted matter of characteristic organosilicon-based coatings.