Abstract:
A resist underlayer polymer, a resist underlayer composition including the same, and a method of patterning using the same, the resist underlayer polymer including a repeating unit represented by at least one of Chemical Formula 1 and Chemical Formula 2:
Abstract:
Disclosed is a deoxidation apparatus for preparing low-oxygen titanium powders. The deoxidation apparatus includes a lower container having an open upper portion and storing an deoxidizer representing an oxygen degree higher than an oxygen degree of titanium and a melting temperature lower than a melting temperature of titanium, and an upper container coupled with the lower container on the lower container and storing titanium base powders. The upper container is provided at a lower surface thereof with a sieve, and allows the deoxidizer, which is evaporated due to heating, to make contact with the titanium base powders so that the titanium base powders are deoxidized.
Abstract:
Disclosed is a method for preparing low-oxygen titanium powders. The method includes (a) separately placing titanium base powders and calcium in a deoxidation container, (b) deoxidizing the titanium base powders by heating an inner part of the deoxidation container at a temperature of 850° C. to 1050° C. so that the calcium is evaporated to make contact with the titanium base powders, (c) removing calcium oxide from surfaces of titanium powders, which are obtained by deoxidizing the titanium base powders in step (b), by washing the titanium powders, and (d) drying the titanium powders subject to the removing of the calcium oxide in step (c).
Abstract:
The present invention provides a method for preparing microtubular halloysite nanopowders by cutting halloysite nanotubes at a high pressure, microtubular halloysite nanopowders prepared by the method, and a cosmetic composition comprising the microtubular halloysite nanopowders. According to the method of the present invention, it is possible to prepare the halloysite nanopowders with a tubular shape using natural halloysite and effectively select a halloysite nanopowder having a desired shape. The microtubular halloysite nanopowders can be used in many industrial fields and used as a container or a carrier for nanoparticles or organic materials such as drugs, air fresheners, cosmetics, agricultural chemical materials, etc.
Abstract:
An aromatic ring-containing compound for a resist underlayer and a resist underlayer composition, the aromatic ring-containing compound being represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, R1 to R6 are each independently a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C5 to C20 aromatic ring group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C3 to C20 cycloalkenyl group, a substituted or unsubstituted C2 to C20 heteroaryl group, or a substituted or unsubstituted C2 to C20 heterocycloalkyl group, X1 to X6 are each independently hydrogen, a hydroxy group (—OH), a substituted or unsubstituted alkyl amine group, a substituted or unsubstituted alkoxy group, or an amino group (—NH2), n1 to n6 are each independently 0 or 1, and 1≦n1+n2+n3+n4+n5+n6≦6.
Abstract:
A resist underlayer polymer, a resist underlayer composition including the same, and a method of patterning using the same, the resist underlayer polymer including a repeating unit represented by at least one of Chemical Formula 1 and Chemical Formula 2:
Abstract:
A microwave oven including: a main casing forming a component compartment and a cooking compartment and formed with a component compartment through portion communicating with the component compartment; a fan assembly coupled to the main casing, and including an exhaling fan blowing air toward the component compartment through portion to cool the component compartment and a fan motor driving the exhaling fan; and a guide unit mounted to the component compartment through portion and guiding the air blown by the exhaling fan toward a heating component accommodated in the component compartment.
Abstract:
The present invention relates to a wall-mounting type microwave oven including a main body, a bottom plate provided on a bottom portion of the main body and having an opening, and a lamp supporter to support a lamp provided in the opening. The bottom plate being integrally formed with the lamp supporter to support the lamp. Thus, the lamp installation structure is simplified and the number of components is decreased.
Abstract:
Disclosed is a method for preparing low-oxygen titanium powders. The method includes (a) separately placing titanium base powders and calcium in a deoxidation container, (b) deoxidizing the titanium base powders by heating an inner part of the deoxidation container at a temperature of 850° C. to 1050° C. so that the calcium is evaporated to make contact with the titanium base powders, (c) removing calcium oxide from surfaces of titanium powders, which are obtained by deoxidizing the titanium base powders in step (b), by washing the titanium powders, and (d) drying the titanium powders subject to the removing of the calcium oxide in step (c).
Abstract:
The present invention relates to a wall-mounting type microwave oven including a main body, a bottom plate provided on a bottom portion of the main body and having an opening, and a lamp supporter to support a lamp provided in the opening. The bottom plate being integrally formed with the lamp supporter to support the lamp. Thus, the lamp installation structure is simplified and the number of components is decreased.