Abstract: A water playing system includes an infrared sensor for sensing people, a display module for displaying still image or moving image, a jet module for jetting the water into the water playing pool, and a control computer for controlling to display the still image or the moving image by the display module and to jet the water by the jet module when the people are sensed by the infrared sensor.

Abstract: Provided is an assembly type block module for water playing, including: a plurality of unit assembly blocks including: a body; an inner passage formed in the interior of the body such that fluid flows through the inner passage; and coupling parts detachably coupled to corresponding coupling parts of other unit assembly blocks such that the inner passages thereof are communicated with each other at any one of opposite ends of the body, wherein the unit assembly blocks have different shapes of the bodies and different forms of inner passages, fluid is supplied from an external fluid supply source while the unit assembly blocks are assembled, and the supplied fluid is discharged to the outside through the inner passage of the unit assembly block located at the extreme end after flowing through the inner passages of the unit assembly blocks.

Abstract: In a cationic electrodeposition coating composition and a method of preparing the cationic electrodeposition coating composition, a cationic electrodeposition coating composition is prepared by dispersing a cationic electrodeposition resin in an aqueous medium containing about 0.5 to 3% by weight of zinc acetate. The cationic electrodeposition resin is prepared by reacting about 40 to about 60% by weight of a cationic resin prepared by an epoxy-amino addition reaction, about 2 to about 5% by weight of an acrylic cationic resin having an amino group, and about 30 to about 50% by weight of a polyisocyanate curing agent including partially blocked isocyanate functional groups. The cured film formed on the hard disc driver base frame by using the cationic electrodeposition coating composition contains no heavy metal such as lead or tin, has no appearance defect such as a pinhole and has excellent corrosion-resistance even when being cured at low temperature.

Abstract: A condensation polymerization of apolyhydric alcohol and a polybasic acid in a solvent is performed to give a polyester resin. The polyester resin and an unsaturated polybasic acid are polymerized to give a polyester resin intermediate of following formula (1) having a carbon-carbon double bond at one end. The polyester resin intermediate is polymerized with an acryl monomer to give an acryl-modified polyester resin composition. Due to the polymerization of the polyester resin intermediate having the carbon-carbon double bond and the acryl monomer, a paint including the acryl-modified polyester resin composition has advantages of a polyester resin and the acryl resin, R—CH2—O—CO—CH?CH—X??(1) wherein R represents a polyester polymer residue, and X represents a methyl or carboxylic group.

Abstract: A water soluble thermosetting polyester resin composition for undercoating a PCM steel sheet is prepared from about 100 parts by weight of thermosetting polyester resin obtained by condensing polyethylene terephthalate using glycol and polybasic acid, about 5-20 parts by weight of anhydrous polybasic acid and amine. A paint composition prepared using thus prepared resin composition is applicable for undercoating PCM steel sheet for both of home appliances and construction materials. In addition, an organic solvent included in the conventional oily paint composition can be excluded to minimize an environmental contamination, a dangerous factor of initiating fire and a bodily harm on human. Further, a paint composition having advantageous processibility, chemical resistance, solvent resistance, adhesion and scratch resistance may be prepared.

Abstract: Disclosed are a resin dispersion and a cationic electrodeposition coating composition including the same, in which the dried coating film of the electrodeposition paint is lead-free and has an epoxy-acrylic double-layered structure for displaying excellent properties, and in which an organic solvent content can be minimized. A resin dispersion of a cationic electrodeposition includes an aqueous dispersion prepared by the following processes. The resin dispersion includes a cationic electrodeposition resin, deionized water, an acid for neutralization, a reaction product of manganese phosphate and an acid diluted in an deionized water to 10%, and a cationic surfactant.

Abstract: In a uniformly copolymerized one-part polyurethane resin composition with improved processing behaviors and chemical resistance, the one-part polyurethane resin composition comprises about 20 to 50% by weight of a hard segment and about 50 to 80% by weight of a soft segment. The hard segment reduces drying time and recoating time of a film coated by the composition, and the soft segment improves processing behaviors of the film including rolling and spraying properties. The one-part polyurethane resin composition may further comprise a catalyst. The catalyst may regulate film drying time and improve gloss of a coated film. Thus, the resin composition may be applied in various fields.

Abstract: In a cationic electrodeposition coating composition and a method of preparing the cationic electrodeposition coating composition, a cationic electrodeposition coating composition is prepared by dispersing a cationic electrodeposition resin in an aqueous medium containing about 0.5 to 3% by weight of zinc acetate. The cationic electrodeposition resin is prepared by reacting about 40 to about 60% by weight of a cationic resin prepared by an epoxy-amino addition reaction, about 2 to about 5% by weight of an acrylic cationic resin having an amino group, and about 30 to about 50% by weight of a polyisocyanate curing agent including partially blocked isocyanate functional groups. The cured film formed on the hard disc driver base frame by using the cationic electrodeposition coating composition contains no heavy metal such as lead or tin, has no appearance defect such as a pinhole and has excellent corrosion-resistance even when being cured at low temperature.

Abstract: Disclosed are a resin dispersion and a cationic electrodeposition coating composition including the same, in which the dried coating film of the electrodeposition paint is lead-free and has an epoxy-acrylic double-layered structure for displaying excellent properties, and in which an organic solvent content can be minimized. A resin dispersion of a cationic electrodeposition includes an aqueous dispersion prepared by the following processes. The resin dispersion includes a cationic electrodeposition resin, deionized water, an acid for neutralization, a reaction product of manganese phosphate and an acid diluted in an deionized water to 10%, and a cationic surfactant.

Abstract: Disclosed are a resin dispersion and a low-temperature curable cationic electrodeposition coating composition including the same, in which the dried coating film of the electrodeposition paint is lead-free and has an epoxy-acrylic double-layered structure for displaying excellent properties, and in which an organic solvent content can be minimized. The resin dispersion includes a cationic electrodeposition resin, deionized water, an acid for a neutralization, a reaction product of manganese phosphate and an acid diluted to a concentration of 10% in deionized water and a cationic surfactant.