Abstract: A biodegradable resin composition and a method for making the biodegradable resin composition are disclosed. The biodegradable resin composition has improved biodegradability by including polyethylene, a biodegradable resin, and polybutylene adipate terephthalate (PBAT).

Abstract: A biodegradable resin composition and a method for producing the biodegradable resin composition are disclosed. The biodegradable resin includes three components, polyethylene, a biodegradable resin, and at least one selected from polybutylene adipate terephthalate and maleic anhydride copolymer, thereby providing excellent compatibility and mechanical properties.

Abstract: The present invention provides a spring washer for a turbocharger including a stopper part formed at an inner periphery there and a line contact part formed at an outer periphery thereof, thus to prevent a spring repulsive force from being exerted thereto more than necessary even when exerting excessive compression and continuous compression force from peripheral parts, and prevent an inclination bent section from being flattened, thereby maintaining or improving restoring characteristics of the inclination bent section. The ring-shaped spring washer installed in a bypass valve of a turbocharger includes: an inner periphery having a stopper part fixed to a lower surface thereof with being overlapped therewith; an inclination bent section integrally formed with the inner periphery with being inclined downward; and an outer periphery having a line contact part integrally formed with the inclination bent section to be in line contact with a support of the spring washer.

Abstract: The present invention provides a spring washer for a turbocharger including a stopper part formed at an inner periphery there and a line contact part formed at an outer periphery thereof, thus to prevent a spring repulsive force from being exerted thereto more than necessary even when exerting excessive compression and continuous compression force from peripheral parts, and prevent an inclination bent section from being flattened, thereby maintaining or improving restoring characteristics of the inclination bent section. The ring-shaped spring washer installed in a bypass valve of a turbocharger includes: an inner periphery having a stopper part fixed to a lower surface thereof with being overlapped therewith; an inclination bent section integrally formed with the inner periphery with being inclined downward; and an outer periphery having a line contact part integrally formed with the inclination bent section to be in line contact with a support of the spring washer.

Abstract: Provided are an oxidation stabilizer for polyolefin, and an insulation composition comprising the same. The insulation composition according to the invention is to be used for coating and jacket of wires and cables, especially of telephone cables.