JPH04135675A - Production of crepe pattern coated film and patterned decorative material - Google Patents

Abstract

PURPOSE:To produce the excellent crepe pattern coated film and the patterned decorative material having such crepe pattern coated film by a short-time ordinary temp. drying by applying the coating material of a crosslinked curing type polyurethane resin on a base material, then bringing the coating material into contact with a curing catalyst. CONSTITUTION:After the coating material of the crosslinked curing type polyurethane resin is applied to the base material, the curing catalyst is brought into contact with the surface of this coated film to form the crepe pattern coated film, by which the patterned decorative material having such crepe pattern coated film is produced. The base material includes metallic materials, such as iron, aluminum, copper, stainless steel, titanium, lead, etc., gypsum base materials, such as gypsum boards and gypsum slag boards, stone materials, glass materials, tile materials, etc., having heat resistance. The coating material of the crosslinked curing type polyurethane resin is the coating material which consists essentially of polyisocylate and polyol and is cured by crosslinking. Examples of the curing catalyst include basic catalyst, acidic catalyst, metallic catalyst, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a creased pattern coating film with high designability, and a method for producing a patterned decorative material having the crimped pattern coating film.

[Conventional technology]

As a shrinking paint that forms a shrinking pattern coating.

Paints are used in which the resin component is alkyd resin varnish, which uses a long drying oil with conjugated double bonds, such as tung oil, and a large amount of organic acid salts, such as cobalt or manganese, as a drying agent. Usually this paint is spray painted, and
A shrinking pattern is formed by baking at 100°C for about 20 minutes, and this is further baked at 130-150°C for about 20 minutes.
The coating was baked for a minute to harden, resulting in a coating with a wrinkled pattern.

However, in order to obtain a beautiful wrinkle pattern and good film performance from the above-mentioned oil-based shrink paint, it is necessary to apply a thick coat of highly concentrated paint to the point of sagging. Therefore, there is an inconvenience in the coating process that an aromatic low-boiling point solvent must be used to dilute the coating material, and it takes a long time to obtain a cured coating film. In addition, paints tend to form skins during storage, so care must be taken when storing them, and when used, filtration is required to remove the skins that form. There is a problem that the weather resistance of the coating film is poor because of the

In addition, as a shrinking paint that forms a shrinking pattern coating, we use a resin component with a curing agent of acrylic resin or fluororesin having a hydroxyl group, and a low-nuclear melamine resin, and a sulfonic acid compound blocked with an amino compound having an amino group. Paints consisting of
No. 75). Furthermore, there is also a shrinking paint that uses cellulose acetate butyrate resin, epoxy resin, and urea resin as the main ingredients, and consists of an acid catalyst and an amine catalyst (Official Digest March issue P, 298-310.19
1962).

However, although these shrinking paints can form an excellent shrinking pattern coating film in a short time, they require baking at a high temperature of 100° C. or higher.

There is a problem in that the applicable base materials are limited to those that can be baked at high temperatures, such as metal materials and gypsum base materials.

[Problem to be solved by the invention]

In order to solve the above-mentioned problems, the purpose of the present invention is to propose an excellent wrinkle pattern coating film that can be obtained by drying at room temperature in a short time and has a high design quality, and a method for producing a patterned decorative material having a wrinkle pattern coating film. It is to be.

[Means to solve the problem]

The present invention is a method for producing the following wrinkled pattern coating film and patterned decorative material.

(1) After applying the cross-linked curing polyurethane resin paint,
A method for producing a wrinkled pattern coating film, which comprises bringing a curing catalyst into contact with the surface of the coating film.

(2) A patterned decorative material having a creased pattern coating film, which is characterized in that after a cross-linked curing polyurethane resin coating is applied to a base material, a curing catalyst is brought into contact with the surface of this coating film to form a crimped pattern coating film. Production method.

In the present invention, the base material used to form the creased pattern coating film includes iron, aluminum, copper, stainless steel,
Metal materials such as titanium and lead; gypsum base materials such as gypsum board and gypsum slag board; stone and glass materials; heat-resistant base materials such as tiles, as well as acrylic resin, polyethylene terephthalate resin, polycarbonate resin, etc. Synthetic resin base materials; base materials with relatively poor heat resistance such as wood base materials can also be mentioned. Furthermore, it is also possible to use a substrate coated with an undercoat material such as a primer or an intermediate coat material such as a surfacer for the purpose of improving the smoothness, adhesion, corrosion resistance, etc. of the base material. These base materials can be used for coating film formation in the form of plates or other molded products, or in the form of buildings, structures, and the like.

The crosslinked curable polyurethane resin paint used in the present invention is
It is a paint that has polyisocyanate and polyol as its main components and is cured by crosslinking. Specific examples include 1) Curing through the reaction of a polyol as a main component with colorants, inorganic fillers, plasticizers, additives, curing catalysts, solvents, etc., and a polyisocyanate curing agent. 2) A two-component reactive polyurethane resin paint containing polyisocyanate as the main component, and optionally polyol.

Examples include one-component moisture-curing polyurethane resin paints that contain colorants, inorganic fillers, plasticizers, additives, curing catalysts, solvents, etc. and harden with moisture in the air, and all of these are commonly available as commercial products. What can be used is available.

The two-component reactive polyurethane resin paint in 1) above is manufactured by Bay
Desmodur, Des+mophen (
Both are polyol/polyisocyanate two-component paints typified by trademark). Examples of the polyol component include polyester polyols, acrylic polyols, and polyether polyols. In addition, as a polyisocyanate component, toluene diisocyanate, 4,4
Aromatic diisocyanates such as '-diphenylmethane diisocyanate and xylylene diisocyanate; hexamethylene diisocyanate, 2,6-diycyanatomethyl caproate, isophorone diisocyanate, trimethylhexamethylene diisocyanate, 4,4'-
Examples include non-yellowing diisocyanates such as methylene bis(cyclohexyl isocyanate); polymers thereof such as polyol adducts, billet forms, and trimers; and mixtures thereof.

The l-liquid hot air-curable polyurethane resin paint mentioned in 2) above is a resin in which polyols such as polyester and polyether are reacted with excess diisocyanate to leave free isocyanate groups at the ends, and the isocyanate groups react with moisture and harden. It is something.

These paints may contain compounds such as colorants, inorganic fillers, plasticizers, antifoaming agents, leveling agents, light stabilizers, curing catalysts, and solvents, as required.

Examples of the curing catalyst used in the present invention include basic catalysts, acidic catalysts, and metal catalysts.

Specific basic catalysts include diethylethanolamine, N-methylmorpholine, N-ethylmorpholine, triethylamine, N,N'-dimethylbenzylamine, N,N'-dimethylpiperazine, triethylenediamine, N,N , N'N'-tetramethylethylenediamine, N,N,N'N'-tetramethylpropylenediamine, N,N,N'N'-tetramethyl-1,3-butanediamine, N-pentanemethyldiethylenetriamine, N -Hexamethyltriethylenetetramine and the like can be mentioned.

Specific examples of the acidic catalyst include butadiene sulfonic acid, inorganic acids, oxyacids, esters of phosphoric acid or boric acid, and para-toluenesulfonic acid.

Specific examples of metal catalysts include tin compounds such as stannous chloride, stannic chloride, and dibutyltin dilaurate;
Salts such as naphthenate, acetate, hydrochloride or nitrate of copper, lead, zinc, cobalt, nickel and manganese; ferrous chloride; antimony trichloride; potassium oleate and the like.

These curing catalysts can be used alone or in combination of two or more. In addition, these curing catalysts are
As mentioned above, it may also be incorporated into paints. A curing catalyst that is brought into contact with a polyurethane resin paint film to promote surface curing of the paint film is used in a liquid or gaseous state.

In the method for producing a crimp-patterned coating film and patterned decorative material of the present invention, a cross-linked and cured polyurethane resin paint is first applied to a base material.

Application methods for polyurethane resin paint include roll coater, flow coater, roll flow coater, bar coater, spray gun, brush, and roll brush painting. It can be applied by any suitable method selected from.

Polyurethane resin paint has a dry film thickness of 10 to 100 mm.
Preferably, it is applied so that the tone becomes 20 to 80 tones. When the dry coating thickness is less than 10 -, it is difficult to obtain a sufficient crimp pattern. Further, if the number of lines exceeds 100, the wrinkled pattern on the surface tends to be uneven, which is not preferable.

In the present invention, before the coating film thus formed is cured,
A curing catalyst is brought into contact with the surface of the coating film to promote surface curing of the coating film and form a wrinkled pattern coating film.

By bringing the curing catalyst into contact with the surface of the coating film in this way, a wrinkled pattern coating film is formed by drying at room temperature for a short period of time.

In the present invention, methods for promoting surface curing of the applied polyurethane resin coating include (1) applying a curing catalyst or a curing catalyst solution, (2) immersing the substrate in a curing catalyst or a curing catalyst solution. and (3) a method of bringing the curing catalyst into contact with the catalyst vapor of a volatile curing catalyst. In either case, the curing process is carried out at room temperature, but heating may also be used. Examples of methods for applying the curing catalyst or curing catalyst solution include air spray, curtain flow coater, and flow coating.

By bringing a polyurethane resin paint film into contact with a curing catalyst, the surface curing of the paint film is promoted, and a crepe-patterned paint film with a large number of fine wrinkles (irregularities) gathered together is formed. In this case, it is thought that by bringing the surface of the applied polyurethane resin paint into contact with the curing catalyst, the curing of the surface is significantly accelerated, resulting in the so-called top-drying phenomenon and the formation of a shriveled pattern. .

The creased pattern coating film thus formed has a high degree of design and is used as a decorative coating film, a protective coating film, etc., and can also be formed on buildings, structures, etc. Furthermore, patterned decorative materials having such a crimp pattern coating film also have excellent design properties, and can be used as is as decorative materials, protective materials, etc., and can also be made into molded products of arbitrary shapes by post-processing.

〔Effect of the invention〕

As described above, according to the present invention, by applying a cross-linked curable polyurethane resin paint to a base material and then bringing it into contact with a curing catalyst, surface curing is significantly accelerated, thereby creating a crepe-like crepe pattern with high design quality. A coating film is formed, and by drying at room temperature for a short time, it is possible to produce an excellent crimp pattern coating film and a patterned decorative material having such a crimp pattern coating film.

〔Example〕

Examples of the present invention will be described below.

Example 1 Commercially available aromatic two-component reactive polyester urethane paint (
Main ingredient = urethane clear [contains basic catalyst], curing agent =
Urethane curing agent B, base agent/curing agent ratio = 271, manufactured by NOF Corporation, product name), 0.6 m x 100 m x 200
- Painted with air spray to a phenol board (Standlight, trade name, manufactured by Hitachi Chemical Co., Ltd.) to a dry coating thickness of 40 -, set at 25°C for 5 minutes, and then heated again at 25°C. Dimethylethanolamine (100% co
ne) was applied by air spray at 50 g/retention.

A wrinkled pattern appeared on the entire surface within 2 to 3 minutes after application.

After the shriveled pattern was obtained, the coating was further heated at 50° C. for 45 minutes to completely cure the coating, thereby obtaining a patterned decorative material having a shriveled pattern coating.

Example 2 Commercially available non-yellowing two-component reactive acrylic urethane paint (base material =
High urethane & 500 clear [contains metal catalyst], hardening agent = high urethane hardening agent HA, base agent/hardening agent ratio = 571
, manufactured by Nippon Oil & Fats Co., Ltd., product name) at 0.6+gv+
100mm x 200++n ABS (M Kasei Co., Ltd.)
Coated with air spray to a dry coating thickness of 407 m on a board made of Stylac-ABS (trade name) manufactured by Manufacturer Co., Ltd., and heated at 25°C.
After setting for 5 minutes, the coated substrate was further immersed in triethylamine at 25°C.

Approximately 3 minutes after soaking, a shrinking pattern appeared on the entire surface.

After the shriveled pattern was obtained, the coating was further heated at 80° C. for 30 minutes to completely cure the coating film, thereby obtaining a patterned decorative material having a shriveled pattern coating.

Example 3 Commercially available aromatic two-component reactive acrylic urethane paint (main ingredient = urethane and 500 clear [contains metal catalyst]).

Curing agent = urethane curing agent F, base agent/curing agent ratio = 5/11
Nippon Oil & Fats Co., Ltd., product name) 0.6 mm x 100 mm
X 200mm methacrylic (Sumipex, trade name, manufactured by Sumima Kagaku Kogyo Co., Ltd.) board was coated with air spray to a dry film thickness of 60 mm, set at 25°C for 5 minutes, and then covered with a 100mm lid. X 150mm
It was placed in a 250 mm glass container at 25° C. in a saturated vapor atmosphere of triethylamine.

After about 3 minutes, a shrinking pattern appeared on the entire surface.

After the wrinkled pattern appeared, the coating was further heated at 50° C. for 30 minutes to completely cure the coating, thereby obtaining a patterned decorative material having a wrinkled pattern coating.

Comparative Examples 1 to 3 Comparative Example 1) by omitting the step of air spraying dimethylethanolamine in Example 1, Comparative Example 2) by omitting the step of dipping the substrate in triethylamine in Example 2, and Comparative Example 2) by omitting the step of air spraying dimethylethanolamine in Example 3. A patterned decorative material was obtained in the same manner as in Examples 1 to 3, except that the step of leaving the material in a saturated vapor atmosphere of triethylamine was omitted (Comparative Example 3).

The patterned decorative materials obtained in Examples 1 to 3 all had three-dimensional, uniform, and excellent crimp pattern coatings. However, in Comparative Examples 1 to 3, despite the use of a curing catalyst and curing agent, no crimp-patterned coatings were formed, and only those with smooth surfaces were obtained.

Agent: Patent attorney Sei Yanagi Hara

Claims (2)

[Claims] (1) After applying the cross-linked curing polyurethane resin paint,
A method for producing a wrinkled pattern coating film, which comprises bringing a curing catalyst into contact with the surface of the coating film. (2) A patterned decorative material having a creased pattern coating film, which is characterized in that after a cross-linked curing polyurethane resin coating is applied to a base material, a curing catalyst is brought into contact with the surface of this coating film to form a crimped pattern coating film. Production method.