Coway Co., Ltd

Other

Korea Institute of Science and Technology

Lg Philips Lcd Co., Inc.

Kim, Yong-bum

Yong-Bum Kim

Tae-Song Kim

Jin-Pyo Hong

Su-Seok Choi

Hyun-woo Lee

Hyoung-Min Moon

Hee-Do Jung

Hyung-Jin Jung

Soo-Young Lee

Min-Sub Song

Hyung-Joon Kim

Tae-Yong Son

Kyung-Heon Lee

The present invention relates to a method for production of terephthalic acid using high polymerization degree polyethylene terephthalate, which includes: (i) introducing high polymerization degree polyethylene terephthalate having an intrinsic viscosity of 0.75 dl/g or more into a continuous reactor, and then heating and pressurizing the same to prepare a fluidal polyethylene terephthalate; (ii) introducing a mixed slurry prepared by mixing an alkaline material containing an alkali-metal, a weak acid salt of the alkali-metal and ethylene glycol together into an internal position of the continuous reactor, through which the fluidal polyethylene terephthalate passes, and implementing neat reaction of the fluidal polyethylene terephthalate with the mixed slurry in the continuous reactor to prepare alkali-metal terephthalate; and (iii) dissolving the prepared alkali-metal terephthalate in water, removing foreign substances through filtration and centrifugation, adding acid to the alkali-metal terephthalate dissolved in water and reacting the same, thereby producing terephthalic acid.

Method of manufacturing for terephthalic acid using polyethylene terephthalate with high degree of polymerization more than 0.75 dl/g of intrinsic viscosity

There are provided an ice thermal storage tank having excellent cold water generation efficiency and having a considerably reduced size, and a water cooler having the same. The ice thermal storage tank includes: a tank body accommodating an ice storage liquid cooled according to an ice thermal storage scheme; a cold water generation unit heat-exchanging introduced water with the cooled ice storage liquid to generate cold water; and a circulation unit extracting the ice storage liquid accommodated in the tank body to circulate it within the tank body. The water cooler includes: the thermal storage tank cooling water supplied from the outside; and a water dispensing unit dispensing cooled water from the ice thermal storage tank. Since an ice storage liquid is circulated without using a stirrer, the size of an ice thermal storage tank can be remarkably reduced, and thus, a water cooler is reduced in size.

Ice thermal storage tank and water cooler having the same

An ice maker is provided that varies an amount of heat transferred between an ice making member connected to a cooling unit and water being in direct or indirect contact with the ice making member according to portions of the ice making member, and producing ice in various forms including rounded ice without edges, especially spherical ice, on the ice making member, the ice maker including a cooling unit performing cooling; at least one ice making member connected to the cooling unit and being in direct or indirect contact with water to allow ice to be produced thereon; with an amount of heat transferred between the ice making member and the water being in direct or indirect contact with the ice making member varies according to portions of the ice making member, such that ice is produced in various forms on the ice making member.

Ice maker

A high-sensitive micro cantilever sensor and a method for fabricating the same which is able to reduce size of a system greatly using a functional thin film has a structure in which an upper substrate comprising one or two piezoelectric cells including a cantilever, a piezoelectric layer formed on lower or upper surface of the cantilever, and electrodes formed on upper and lower surfaces of the piezoelectric layer is attached to a lower substrate including a cavity of an even depth by contacting the lower surface of the piezoelectric cell on the upper substrate with the cavity surface of the lower substrate.

High sensitive micro-cantilever sensor and fabricating method thereof

A high density ceramic thick film is fabricated by providing vehicle comprising an organic binder and solvent, dispersing ceramic powders into the vehicle to be paste, forming the paste to thick film by screen printing, removing the organic binder from the film, applying sol or sol-like solution to the surface of the film so that the sol or sol-like solution can infiltrate into the film, removing remaining sol or sol-like solution from the surface of the film, drying and preheating the film, and sintering the film.

High density ceramic thick film fabrication method by screen printing

A liquid crystal injection apparatus and method for injecting a liquid crystal material between substrates of a liquid crystal display panel. The method and apparatus includes using an electric field to orientate the liquid crystal material during injection such that the liquid crystal material has a reduced viscosity. The electric field can be produced by electrodes adjacent the substrates, and by an electric source that applies a potential to the electrodes. Liquid crystal material injection can be the result of capillary forces and/or differential pressure.

Apparatus and method for injecting liquid crystal material

Growing community of inventors

Seoul, South Korea

Yong-Bum Kim