JPS5857954A - Plastic material for outdoor spread - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION In particular, the present invention relates to a surface-modified plastic material that can withstand long-term off-site use and is easily transparent to light.

For example, roofing materials for simple buildings (garages, storerooms, etc.), covering materials for agricultural heating, lighting parts KW for gymnasiums, factories, warehouses, etc.
The greatest feature of the glass material used as an outdoor extension material, compared to other materials such as slate and wood, is that it allows sunlight to enter. However, all of the currently available materials suffer from reduced light transmittance due to dust adhesion and surface deterioration due to long-term use, resulting in decreased practical value and poor appearance.

Traditionally, glass has been used for these plastic materials, but glass has poor impact resistance, and if a structure is hit by a stone or is distorted, it will break and it is difficult to dispose of the broken pieces.

Also, because the specific gravity is high, it is necessary to make the aggregate thicker. Under these circumstances, there is a demand for long-term durable plastic materials.

Materials currently provided include: GE) Soft AlJ & Sheet (1L! Polyvinyl chloride% I
P) Hard resin sheet (rigid polyvinyl chloride V1L polyester, PofJ acrylic, etc.) e→ Fiber-reinforced resin sheet (/17 ester, acrylic l1 resin, etc.) @ mark indicates soft Therefore, it is easy to spread, and it is possible to adhere to distorted surfaces by deforming the sheet. However, compared to (1) and (3), it is more susceptible to stains from wind, rain, and dust and does not last for a year, significantly impairing its transparency and appearance.

Although the workability of spreading is inferior to that of KK, it is possible to maintain transparency for a longer period of time. However, after three years, the surface deteriorates and a cloudy devitrification phenomenon occurs.

As for e), in the first place, the transparency is not sufficient, and the smoothness between the surfaces is not lost after long-term use, and the 4ca delicate parts are exposed, which prevents light from passing through.

The object of the present invention is to withstand long-term outdoor use and to have good light transmittance. The purpose is to provide a plastic material with a modified surface for outdoor application.

According to the present invention, there is provided a surface-modified nine-outdoor display material, which is made by coating a plastic sheet with a mixture of a fluorine-containing polymer and a coating polymer as a binder thereof.

The present invention will be explained in detail below. What is a fluorine-containing polymer?1
Examples include polyvinyl heptadate, vinylidene fluoride, polytetrafluoroethylene, polytrifluoromonochloroethylene, perfluoropropylene polymer, fluoroalkoxyethylene polymer, and copolymers thereof. Furthermore, copolymers of the above-mentioned fluorine-containing monomers and non-fluorine-containing monomers (eg, vinyl compounds such as ethylene, propylene, vinyl chloride, etc.) are also included. Such fluorine-containing polymers are generally expected to have low surface tension and good weather resistance. However, because of its low surface tension, it has poor adhesion to other materials, and transparent coatings on plastic substrates are practically not practiced.

The inventors have discovered the use of binder resins to improve the adhesion of these polymers. Examples of coating polymers used as binders in the present invention include acrylic, amino (alkyd, melamine alkyd,
(benzoguanan alkyd type, etc.), organosiloxane type, fluorine-containing type, polyester type, alkylphenol type, epoxy type, etc. These paints are selected depending on the material of the plastic sheet to be coated. Preferably, these paints and the fluorine-containing polymer are mixed in a solution in a common solvent. The ratio of the binder resin and the fluorine-containing polymer is not particularly specified, but depending on the type of binder resin or the type of 7-strand-containing polymer,
Mixing in the form of powder, suspension, or emulsion is also possible.

Examples of the base plastic sheet used in the present invention include vinyl chloride polymers (hard and soft),
Examples include acrylic polymers, polyesters (thermoplastic and thermosetting resins), polyolefins (polyethylene, polyvinyl acetate, etc.), and other thermoplastic and thermosetting resins. The above-mentioned resin can be blended with a reinforcing agent such as glass fiber, a filler, etc., if necessary, and formed into a sheet, which can be stretched if necessary. The thickness of the sheet is not particularly limited, but is from 0.1 to 3-
degree is preferred.

The spreading material of the present invention prevents the adhesion of scum, prevents aging and corrosion of the base sheet, and maintains transparency for a long period of time.

When the mixture of the fluorine-containing polymer/coating polymer of the present invention is applied to the soft resin sheet of (a) above, it is possible to prevent the adhesion of dust and maintain transparency.

When the resin mixture of the present invention is applied to the hard resin sheet (b) above, surface deterioration can be prevented and transparency can be maintained.

When the resin mixture of the present invention is applied to the fiber-reinforced resin sheet of e→ above, exposure of the fibers can be prevented and transparency and good appearance can be maintained. Therefore, the outdoor spreading material of the present invention exhibits its effects regardless of the plastic material. 8 parts by weight and 2 parts by weight of polymethyl methacrylate were coated to a thickness of 3 microns using dimethylacetamide as a common solvent. When this was used outdoors for a year, the light transmittance was 80%, which was excellent.

The light transmittance of the soft vinyl chloride sheet after the same period of time without being treated according to the present invention was 60%. Furthermore, the light transmittance of the soft vinyl chloride sheet coated with the above-mentioned acrylic resin that does not contain poly(vinyrizo/7t) after one year was 70%. Note that the light transmittance was measured according to the method of JISK-6714.

Actual M False-2 5 parts by weight of polyvinylidene fluoride and 5 parts by weight of resin for acrylic paints were mixed and dissolved in dimethyl formamide on the surface of a 0.2 inch biaxially stretched polyethylene terephthalate sheet to form a solid content of 5μ. Thickness Kl! F Cloth Maru. The light transmittance after this was expanded outdoors for three years was 80%. It was 70% when the treatment of the present invention was not performed.

Example 3 Acrylic resin sheet reinforced with glass fiber (thickness l
■) A mixture of fluororubber latex mainly consisting of a copolymer of vinylidene fluoride and per-70 ropropylene and an emulsion of acrylic resin (polymer weight ratio 2:
1) was applied so that there were 5 tones when dry. This material was used outdoors for three years and the light transmittance at the time of death was 85%. On the other hand, when the treatment of the present invention was not performed, the smoothness of both surfaces of the sheet was lost and the light transmittance was poor at 75%.

Only the fluororubber latex was applied to an acrylic resin sheet using the same method. This was spread outdoors, but after 3 months, the coating layer had already peeled off, and the transparency after 3 years was 75%, which was the same as the untreated product. Commissioner of the Japan Patent Office Kazuo Wakasugi 1 Case Indication Special - No. 156142/1982 2 Name of the invention Plastic material for outdoor expansion 3 Relationship with the person making the amendment Name of the patent applicant (312) Mitsui Toatsu Chemical Co., Ltd. 4 Address of agent: 2-8-1 Toranomon, Minato-ku, Tokyo, Toranomon Electric Building@- Column 6 for claims and detailed description of the invention, Contents of amendment 0) The scope of claims has been corrected as shown in the attached sheet. do.

(2) On page 3, line 16 of the specification, "made by coating with a coating polymer" is corrected to "'made by forming a film using a high molecular weight polymer."

俤) On page 4, line 16, "coating polymer" is corrected to "high molecular polymer."

(Again, page 5, lines 1-3, “These paints...
``These Ikll) and the above-mentioned fluorine-containing polymers'' should be amended to read as follows: ``These polymers are selected depending on the material of the glass sheet on which the film is to be formed.'' There are various ways to use indider as a treatment method.Generally, a method is to blend a fluorine-containing polymer and /4-in film and paint it on the glass sheet to be coated using a common solvent. It is easy to do this, but it is not limited to this.You can blend the two together and extrude and laminate them onto a plastic sheet.
It is also possible to co-extrude the blend and the glass material, which is the material used for the shoe, by applying pine paste onto the glass sheet in advance, extrusion coating it, and then extruding the fluorine-containing polymer. In blend coating, which is the most flexible method, the binder and the fluorine-containing polymer may be co-extruded, or co-extrusion of these three components may be used. ” is corrected.

(6) On page 6, line 9, change “Apply a mixture of coating polymers” to “
``Film formation using a high molecular weight polymer as a binder.''

υ) On page 4, line 7, insert the following sentence next to "Contains copolymers with...": "These fluorine-containing polymers contain anti-cultivating agents, ultraviolet light absorbers, etc." (8) Correct line 1118 and line 6 0rKJ to r6cJ.

(9) Insert the following sentence in the column on page 8: "Example 4 2 methyl methacrylate/butyl acrylate as a binder to PVC Δ round of the following composition as a base material:
Copolymerize at a molar ratio of 1:9 to make a 3-layer coextrusion using a 9-acrylic copolymer resin and a litz bi-lydene resin, and cast 1Illk so that each layer has a thickness of 150 μm and 5 μm in order to form a laminated film. Obtained.

Composition of PVC compound: Vinyl chloride CP = 1,200) 100 parts by weight Dioctyl phthalate 50 Epoxidized soybean oil 2 Metal soap 1 Surfactant 2 When this was used outside the layer for one year, the permeability was 82 −
It was very good. The original light transmittance of the soft vinyl chloride sheet after the same period of time without the film formation of the present invention was 609I.
The scope of the J patent claim, which was previously stated, has been amended as follows: ``A film with an improved surface formed by forming a film on a glass sheet using a fluorine-containing polymer and a high molecular weight polymer as its pine coating. ``Materials for outdoor expansion,''

Claims (1)

[Claims] An outdoor spreading material with 11 sides removable, which is made by coating a plastic sheet with a mixture of a fluorine-containing polymer and a coating polymer as a binder.