Abstract: A lighting fixture body and a lens, both formed of plastic which generates gas when heated, are bonded together, using a hot melt adhesive with adsorbent mixed therein, thereby preventing foams from residing in the interface between the plastic materials and the hot melt adhesive. The hot melt adhesive is mainly composed of styrene-ethylene-butylene block copolymer, and molecular sieve or other adsorbent having adsorbing cavities is added to the hot melt adhesive. After the hot melt adhesive is filled in the sealing grooves of the lighting fixture body, the anchoring parts of the lens are set in the hot melt adhesive and fastened mechanically with spring pegs. The hot melt adhesive solidifies in the sealing grooves, thereby fixing the lighting fixture body and the lens together.

Abstract: A granitic stone-like artificial solid material is produced by impregnating a paper sheet having a granitic stone-like fleck pattern with a thermosetting resin to give a paper containing from 25-60% by weight of the resin on a dry basis. The resin impregnated paper sheet is dried and hot-pressed into a laminate comprising a plurality of the sheets. The paper includes (A) from 20-80% by weight of cellulose pulp, (B) from 2-40% by weight of an artificial fiber, (C) from 10-70% by weight of an inorganic filler less than 10 .mu.m in average diameter, and (D) from 1-30% by weight of a fine-grained additive of grains from 10-500 82 m in average diameter, having a color hue different from that of the inorganic filler (C).

Abstract: A granitic stone ( so-called Mikage-ishi)-like artificial solid material produced by impregnating a paper sheet having a granitic pattern with a thermosetting resin to give a paper containing from 25 to 60% by weight of the resin at the dry basis; drying the resin-impregnated paper sheet; and hot-pressing a laminate comprising a plurality of the dried sheets; is claimed, said paper mainly comprising (A) from 20 to 80% by weight of cellulose pulp, (B) from 2 to 40% by weight of an artificial fiber, (C) from 10 to 70% by weight of an inorganic filler less than 10 .mu.m in average diameter, and (D) from 1 to 30% by weight of a fine-grained additive consisting of grains from 10 to 500 .mu.m in average diameter, having a color hue different from that of the inorganic filler (C).

Abstract: An aminotriazine prepolymer is provided which gives resin with toughness and favorable transparency without use of filler agent by mixing 2-hydroxyethyl methacrylate (781 g: 6 mole), melamine (126 g: 1 mole), 95% by weight of p-formaldehyde (189 g: 6 mole as formaldehyde), p-toluene sulfonate (3.0 g), hydroquinone monomethyl ether (0.2 g) in a two liter separation flask with a stirring device, a thermometer, an air-inlet tube, and a cooling tube for removing the distillate. The mixture is heated while air is blown in. After the melamine and paraformaldehyde are dissolved in 2-hydroxyethyl methacrylate, at the temperature of 80.degree. C. to 100.degree. C., the reaction is continued in the temperature range of 105.degree. C. to 115.degree. C. until the quantity of extracted water is 108 g (6 mole). The triazine ring structure-containing methacrylate prepolymer thus obtained has a viscosity of 2,000 cP at 20.degree. C., a bromine number of 92.1 (Br g/100 g), and a Gardner color degree of not greater than 5.

Abstract: An aminotriazine prepolymer is provided which gives resin with toughness and favorable trans-Darency without use of filler agent by mixing 2-hydroxyethyl methacrylate (781 g: 6 mole), melamine (126 g: 1 mole), 95% by weight of p-formaldehyde (189 g: 6 mole as formaldehyde), p-toluene sulfonate (3.0 g), hydroquinone monomethyl ether (0.2 g) in a two liter separation flask with a stirring device, a thermometer, an air-inlet tube, and a cooling tube for removing the distillate. The mixture is heated while air is blown in. After the melamine and paraformaldehyde are dissolved in 2-hydroxyethyl methacrylate, at the temperature of 80.degree. C. to 100.degree. C., the reaction is continued in the temperature range of 105.degree. C. to 115.degree. C. until the quantity of extracted water is 108 g (6 mole). The triazine ring structure-containing methacrylate prepolymer thus obtained has a viscosity of 2,000 cP at 20.degree. C., a bromine number of 92.1 (Br g/100 g), and a Gardner color degree of not greater than 5.

Abstract: The present invention relates to the hot melt type seal agent for adhering and sealing a head lamp of a vehicle, wherein a lens and a housing are integrally one unit. The necessary component materials of the hot melt type seal agent of the present invention include a mixture produced by butyl rubber, SEBS block copolymer and olefin with high softening point. The hot melt type seal agent of the present invention withstands temperature changes in the head lamp and the gas pressure that is filled therein. Consequently, good adhesion, waterproof and high gas-tight performances are achieved.

Abstract: Artificial marble is produced by laminating a plurality of prepreg sheets formed by impregnating a porous substrate with a melamine resin composition which is composed of melamine resin and a modifier. The melamine resin is an unmodified melamine resin or an alcohol-etherified melamine resin in which formaldehyde-to-melamine molar ratio is between 1.2 to 3.0. The modifier is selected from alcohol, glycol, acrylic monomer, acrylic oligomer and vinyl acetate monomer. The artificial marble has a good stability in dimensions and it is suitable to apply the artificial marble to a composite panel or a decorative laminate panel which is free from tearing even after long time use.

Abstract: A keysensor of the present invention is provided with a magnet and a magnetic switch opposedly via a hole for inserting and removing each keyholder containing magnetic metal sheet and consisting of non-magnetic substance, a plurality of magnetic switches are placed at predetermined places, said keysensor makes it possible for said magnetic switches to operate corresponding to said places by using said keyholder containing magnetic metal sheet different in each position and size.

Abstract: The room temperature control unit is provided with a switch for determining whether the room is vacant or occupied and if required with a switch for determining whether the room is cooled or heated, so that the room temperature is controlled while the room is vacant to be somewhat (e.g. 2.degree. C.) higher than a set temperature when the room is cooled, and somewhat (e.g. 2.degree. C.) lower than a set temperature when the room is heated. For that purpose, at least two common contacts are provided and they are connected to switch contacts in different ways so that one common contact is selected according to whether the room is vacant or occupied.

Abstract: The present keysensor (1) includes a base (2) for placing a keyholder (4) with a magnet (7) contained and a magnetic sensor (3) installed on a reverse side thereof, thus, it is possible to facilitate the use and to employ a fixed-type keyholder.

Abstract: A top fitted with a basin having good water drainage which is constructed by fixing the basin to the top made by laminating a decorative board on the top surface of a wood derived material, e.g. plywood, particle board etc. as a core material, so that a flange part of the basin is situated beneath the rear surface of the decorative board, and bonding and reinforcing with a synthetic resin, and a process for their production.By the present invention, the basin can be firmly fixed without any spaces, and therefore remarkably increases durability of kitchen fixtures.