Abstract: The enclosure of the receiver device is divided into an antenna vicinity enclosure 1 and a demodulation unit enclosure 2, which are connected by a single transmission cable. By disposing the antenna vicinity enclosure 1 in the vicinity of the antenna, the high frequency feeder cable drawn from the antenna to the antenna vicinity enclosure 1 can be shortened. The effect of pulse noise and high frequency noise picked up by the conventional feeder cable can therefore be reduced. Furthermore, the length of the feeder cables in a quantity corresponding to the number of antennas is then reduced and the wiring space for the feeder cable can be reduced. The demodulation unit enclosure 2 is disposed spaced apart from the antenna, and the wiring space for the transmission cable can be greatly reduced in comparison with a case where a plurality of feeder cables are wired in the wiring space.

Abstract: A high voltage generated by a high voltage generator is applied to corona electrodes, and powder supplied from a powder flow passage collides against a diffuser main body while being moved in a vortex by air ejected from a vortex air introduction port and is ejected from a nozzle opening. After the powder is charged by ions generated by corona discharge, it is sprayed to an object to be coated. Free ions generated by the corona discharge are trapped by ion trap electrodes. The adhesion of the powder can be prevented by the ejection of compressed air through a diffuser front portion cover and an outer cylinder cover each composed of a porous member and the ejection of compressed air from a nozzle hole.

Abstract: An electrostatic powder coating gun for dispersing aggregate powder onto substrates. The gun includes swirling air passage outlets to form a vortex of air inside the spray gun tip to reduce powder adhesion and assist in pulverizing the powder material. The coating gun employs a powder supply unit having a fluidized bed that includes temperature and humidity controls to adjust the temperature and humidity of the compressed air supplied to the spray gun and a mixer to agitate the powder in the container.

Abstract: An electrostatic powder coating method of forming an undercoating film having a volume specific resistivity of not more than 10.sup.13 .OMEGA..multidot.cm and a thickness of not more than 200 .mu.m on a metal surface and forming an overcoating layer on the undercoating film by electrostatic powder coating. The undercoating film is composed of a plurality of layers with only the top layer containing a conductive material.

Abstract: An electrostatic powder coating apparatus is provided which includes a spray gun and a powder supply unit. The spray gun includes facilities for dually functioning to both pulverize and disperse the aggregated powder and powder adhesion preventing facilities. Both the pulverizing and dispersing facilities and the powder adhesion prevention facilities are provided in a nozzle lip of the spray gun of the electrostatic powder coating apparatus. The powder supply unit includes a temperature/humidity control facilities for adjusting the temperature and humidity of the compressed air supplied to an air chamber within the powder supply unit.

Abstract: Supplying method of powder paints wherein powder paint pellets are manufactured and stored as they are at the manufacture site and, when ordered, they are shipped and transported to the coater, and, at the coater site, they are stocked, and pulverized and classified into a sprayable powder upon powder coating thereby enabling to control the particle size of the powder paint while continuing the powder coating.A powder coating machine therefor pulverizes and classifies powder paint pellets into a sprayable powder at the coater site while continuing powder coating using the pulverized powder paint.

Abstract: A powder coating composition contains acrylic resin (A) containing at least 40 percent by weight of a glycidyl-group-containing monomer and having a solubility parameter which is in the range of 11.0 to 11.6 and a glass transition temperature of at least 20.degree. C., a surface modifier (B) consisting of a polymer having a solubility parameter which is in the range of 10.4 to 11.0, and polyvalent carboxylic acid (B). The surface modifier (B) is in a content of 0.1 to 4 parts by weight with respect to a total content of 100 parts by weight of the acrylic resin (A) and the polyvalent carboxylic acid (C), while the components are so mixed with each other that the amount of carboxylic groups contained in the polyvalent carboxylic acid (C) is at an equivalence ratio of at least 0.5 to the amount of glycidyl groups contained in the acrylic resin (A).

Abstract: Supplying method of powder paints wherein powder paint pellets are manufactured and stored as they are at the manufacture site and, when ordered, they are shipped and transported to the coater, and, at the coater site, they are stocked, and pulverized and classified into a sprayable powder upon powder coating thereby enabling to control the particle size of the powder paint while continuing the powder coating. A powder coating machine therefor pulverizes and classifies powder paint pellets into a sprayable powder at the coater site while continuing powder coating using the pulverized powder paint.

Abstract: Supplying method of powder paints wherein powder paint pellets are manufactured and stored as they are at the manufacture site and, when ordered, they are shipped and transported to the coater, and, at the coater site, they are stocked, and pulverized and classified into a sprayable powder upon powder coating thereby enabling to control the particle size of the powder paint while continuing the powder coating.A powder coating machine therefor pulverizes and classifies powder paint pellets into a sprayable powder at the coater site while continuing powder coating using the pulverized powder paint.

Abstract: A powder coating composition contains acrylic resin (A) containing at least 40 percent by weight of a glycidyl-group-containing monomer and having a solubility parameter which is in the range of 11.0 to 11.6 and a glass transition temperature of at least 20.degree. C., a surface modifier (B) consisting of a polymer having a solubility parameter which is in the range of 10.4 to 11.0, and polyvalent carboxylic acid (B). The surface modifier (B) is in a content of 0.1 to 4 parts by weight with respect to a total content of 100 parts by weight of the acrylic resin (A) and the polyvalent carboxylic acid (C), while the components are so mixed with each other that the amount of carboxylic groups contained in the polyvalent carboxylic acid (C) is at an equivalence ratio of at least 0.5 to the amount of glycidyl groups contained in the acrylic resin (A).

Abstract: The object of the present invention is to provide a powder coating excellent in storage stability and in coat surface smoothness.The present invention relates to a powder coating comprising a binder resin and a curing agent, characterized in that said curing agent has particle size characteristics such that the average particle size is 0.3 to 7 .mu.m and particles having a particle size not smaller than 20 .mu.m account for not less than 10% by weight of all curing agent particles.

Abstract: There is obtained with greater efficiency a powder coating having an average particle diameter smaller and a particle size distribution range narrower than those currently made by conventional methods.

Abstract: A resinous composition for powder coating, comprising (A) an acrylic resin and (B) a hardener, the acrylic resin being composed of (a) t-butyl methacrylate and/or t-butyl acrylate, (b) an ethylenically unsaturated monomer having a reactive functional group and (c) other ethylenically unsaturated monomer(s) than the said (a) and (b) which is (are) non-reactive with the functional group of (b), the reactive functional group content being 0.0010-0.0046 mol/g of resin, the glass transition temperature being 30-110.degree. C. and the number average molecular weight being 1,000-20,000, and the hardener having in its molecule 2 or more functional groups which are reactive with the reactive functional group possessed by the acrylic resin.The powder coating based on the present resinous composition is useful for the coating of construction material, auto-mobile and the like and is excellent in low temperature curing properties, storage stability and can result an excellent film even when used a stored powder.

Abstract: A process for preparing a polymerizable compound of the formula: ##STR1## or a polymerizable compound of the formula: ##STR2## is provided. These formed compounds are useful for the preparation of an acrylic resin which is low in viscosity and capable of forming a coating with excellent flexibility, weather resistance and water resistance.

Abstract: A powder coating which is specifically useful for the containing of electric appliance, office appliance and the like and is excellent, inter alia, stain resistance of the formed coating is provided, the powder coating comprising (a) a base resin having a reactive functional group, (b) a hardener having in its molecule 2 or more functional groups which are reactive with the functional group of the base resin and (c) an acrylic resin containing 40 100 % by weight of the total of the constituting monomers of t-butyl acrylate and/or t-butyl methacrylate.

Abstract: The invention concerns a coating powder composition comprising (A) a carboxyl group containing polyester resin having a number average molecular weight of 1,000.about.20,000, an acid value of 10.about.100, a glass transition temperature of 35.degree.-120.degree. C. and an SP value of 9.8.about.11.5, and (B) glycidyl trimellitate, wherein the equivalent weight ratio of carboxyl the groups of said (A) to the glycidyl groups of said (B) is 1:2 to 2:1. The coating powder composition is specifically suitable for a high-temperature-short time baking and capable of resulting in a coating having excellent film properties including bending and processability and which coating is highly-crosslinked.

Abstract: The invention relates to a composite particle comprising 2 to 98% by weight of a base resin having softending point of -10.degree. to 120.degree. C. and a number average molecular weight of 600 or more and 98 to 2% by weight of an anisotropic crystalline polymer having a phase transition point of 60.degree. to 230.degree. C. and a number average molecular weight of 600 to 10,000 and capable for forming an anisotropic molten phase, the polymer having the specific structure in which a repeating unit of the formula:A--X--B (I)(wherein 100 to 50 mol % of A stands for defined mesogenic group, 0 to 50 mole % of A is p-phenylene, m-phenylene or trans-1,4-cyclohexylene, B is a defined spacer group, and X is ester bond, carbonate bond, amide bond, urethane bond or urea bond, and a repeating unit of the formula:R (II)in which R stands for bivalent to hexavalent hydrocarbon residue, are connected, in any successive orders and in a weight ratio of (I)/(II)=99.9/0.

Abstract: Benzyl pyridinium or ammonium salts of a non-nucleophilic anion are useful as a cationic polymerization initiator having a heat latency. A variety of resinous compositions containing this initiator is also disclosed.

Abstract: The invention concerns powder coatings comprising thermoplastic or thermosetting type resin powder particles, each particle carrying at least on the surface thereof, a number of microparticles having an average diameter of 0.001 to 10.mu. of such resin as having a glass transition temperature of 50.degree. to 150.degree. C. and a SP value of 9 to 15, said microparticle optionally containing UV absorber or antioxidant or hardening catalyst, the weight ratio of said microparticles to the total weight of the powder coatings being 0.05 to 30% by weight. The present powder coatings are excellent in blocking resistance and capable of forming a coating with excellent stain resistance, coating appearance and other desired properties.

Abstract: Disclosed is a paint resin prepared by reacting an aluminum chelate compound with a resin having an active hydrogen bonded to an electrophilic atom or atomic group, and/or epoxy group.