Nhk Spring Co., Ltd.

Yokohama Kiko Co., Ltd.

Kiko Co., Ltd.

Shitomi Katayama

Akira Ohno

Susumu Senaha

Suguru Nomura

Akira Akagami

Suizo Kyo

Hiroshi Imai

Hajime Shimabukuro

Susumu Shimomura

Kiyoshi Jin

Tetsuya Chiba

Nobuaki Koyama

Akiro Ohno

Takeyasu Iwashita

Hiroyuki Kurita

Shuichi Watanabe

The present invention relates to a novel, heat-resisting layer-constructions consisting of base substrates such as plates, boards and sheets, and silicone polymers having high contents of aryl radicals painted and thermally cured to adhere on the surfaces of the said base substrates, and the method of preparing the same. Starting materials of the said silicone polymers are polyaralkylsiloxanes in which the molar ratio of aryl radicals are: aryl radicals/(aryl radicals+alkyl radicals)=0.65 to 1, i.e., from 65 to 100 molar percent, and the functionality of the polymerizable functional groups is as average between 2 and 3. Most of the silicone polymer thin films coated and strongly adhered on to the surface of the said substrates are colorless and transparent, and all the polymer films have high resistivity against heat, light, chemicals, water, moisture and weathering tests. The polymer films have also good anti-cracking resistivity against flexing or bending and can be excellent undercoats of vacuum coatings such as vacuum deposition, sputtering and ion plating. The layer constructions can be manufactured with good workability without causing any environmental pollution.

Heat-resisting layer-constructions and method for preparing the same

A reflector includes a base body made of a metallic material having substantially the same ionization potential as that of aluminum. A reflecting layer made of aluminum is formed over one surface of the base body by vacuum deposition. A light-transmitting water-insoluble inorganic oxide layer is formed on the aluminum reflecting layer. The light-transmitting inorganic oxide layer has its micropores sealed by H.sub.2 O a carboxylate of an iron family element having a low valence.

Reflector and method for manufacturing the same

A reflector includes a base body exhibiting dielectric property at least at its surface. A reflecting layer made of aluminum is formed on one surface of the base body by vacuum deposition. A light-transmitting water-insoluble inorganic oxide layer is formed on the aluminum reflecting layer. The light-transmitting inorganic oxide layer has its micropores sealed by sealing agent comprising H.sub.2 O or a carboxylate of an iron family element having a low valence.

The present invention is intended for a heat resistant reflector in which a light reflective metal is vacuum coated on a metal or inorganic material substrate and in which on the surface of the vacuum coated layer is further vacuum coated a light transmissible ceramic and preferably, a ceramic having a crystalline substance. This reflector has a light reflective metal and a ceramic vacuum coated together, and thus, can form a thin film of the same replica as a substrate. Therefore, there is very little refraction or absorption of light due to a protective film, cnanges of total reflectivity, regular reflectivity or refractivity are very few and its manufacture as well is simple because of continuous vacuum coating with one and the same coating machine. Further, as this reflector is protected with a crystalline ceramic, it has good resistance to heat, light, weather and solvent, and since a ceramic having a low degree of oxidation is electrically conductive in some cases, it can be made antifogging by conduction. The surface is highly dense and there is very little loss of transparency or coloring deterioration with time. Rubbing scratches due to wiping of pollutants on the surface are difficult to inflict and the surface has the property of excellent durability.

Heat resistant reflector

A reflector has a base body which is made of a metallic material having an ionization potential substantially higher than that of aluminum. An aluminum reflecting layer is formed on one surface of the base body by vacuum deposition. Furthermore, a light-transmitting water-insoluble inorganic oxide layer is formed on the aluminum reflecting layer. The light-transmitting inorganic oxide layer has its micropores sealed by H.sub.2 O or a carboxylate of an iron family element having a low valence. An insulating layer is formed to cover at least the other surface and the peripheral side of the base body.

The present invention relates to heat-resisting layer-constructions consisting of base substrates such as plates, boards and sheets, and silicone polymers having high contents of aryl radicals painted and thermally cured to adhere on the surfaces of the base substrates, and the method of preparing the same.

The present invention relates to a plastic reflector having high reflective properties and the method of preparing the same. The reflector is obtained by disposing a reflective film in which a light-reflective metal is coated by a vacuum coating method on one or all sides of a molded body made of polymeric materials or the derivative thereof and further by disposing a light-transmissible coated film in which an inorganic substance selected from metallic oxides and oxides of amphoteric elements or a derivative thereof is vacuum coated on the reflective film.

Highly reflective plastic reflector with crystalline inorganic film

A multi-layer coating reflector consisting of 3 or 4 layers of the present invention, which comprises a light reflective metallic vacuum-deposited layer disposed on a substrate which may, or may not, have a resin layer thereon and a light transmittable inorganic or light transmittable resin layer which may, or may not, be further disposed on the surface of that, use for one or both of the resin layers high aryl silicone resin in which the mole percentage of aryl/alkyl+aryl is 65-100%. With the use of such high aryl silicone resin, when said resin is a protective layer, the reflector has excellent resistance to light, weathering, water, humidity, chemicals and bending and when it is on the substrate, the light reflective metal has excellent reflection properties and obtains bright reflected images, high precision light collection and distribution properties.

Multi-layer reflectors

An article with multi-layer protective coatings, comprising a substrate and two protective coating layers, in which said protective coating layers consist of a vacuum-coated ceramic layer and a resin layer, coated in any desired order.

Multi-layer coating protective film form

The reflector of the present invention is a multi-layer reflector comprising a substrate with or without a resin layer coated thereon; a light-reflective metal layer vacuum-coated on said substrate; and a protective layer consisting of a light transmittable resin layer and a light transmittable, preferably vacuum-coated, inorganic substance layer coated on said metal layer. By this, each film can be thin as compared with each individual protective film, which leads to good heat conductivity low temperature rise, high impact strength and good durability and which gives clear reflected images or high precision light collective and light distributing properties. In addition, the coated light-reflective metal shows better regular reflectivity, giving clear and sharp reflected images and allowing more accurate light collective or light distributing properties. Furthermore, selection of an inorganic substance layer or a resin layer as the outermost protection allows the manufacture of reflectors having desired characteristics (resistance to oil, solvents, light, heat, abrasion, chemicals, water and moisture; flexibility, etc.) depending on specific requirements.

A urea compound having a sulfonate radical is obtained by reaction of aminoaminosulfonate represented by the formula: ##STR1## (where R.sub.1 is a hydrocarbon-based radical, and R.sub.3 is propylene radical, a substituted propylene radical, butylene radical or a substituted butylene radical) with diisocyanate, optionally in the presence of diamine and/or water. The reaction may be achieved by interfacial polymerization, solution polymerization, or solvent-free polymerization.

Urea polymer containing a sulfonate radical and method of preparing the

A urea compound having carboxylate radical is obtained by reaction of aminoaminocarboxylate represented by the formula: ##STR1## (where R.sub.1 l is a hydrocarbon-based radical, and R.sub.2 is ethylene radical or a substituted ethylene radical) with diisocyanate, optionally in the presence of diamine and/or water. The reaction may be achieved by interfacial polymerization, solution polymerization, or solvent-free polymerization.

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Yokohama, Japan

Shitomi Katayama