Abstract:
PURPOSE: A post-transition metal-supported catalyst, a producing method thereof, and a polymerization method of olefin using thereof are provided to secure the durability, and to improve the catalytic activity for a polymerization reaction. CONSTITUTION: A post-transition metal-supported catalyst contains a carrier, a silane compound chemically combined with the surface of the carrier, and a reaction product selected from post-transition metals marked with LmMXn. The silane compound is selected from the group consisting of silane compounds marked with chemical formula 1 and 2.
Abstract:
본 발명은 PLA의 생분해성을 저하시키지 않으면서 수지 자체가 가진 물성적 단점을 보안하면서 동시에 환경친화적인 이산화탄소를 이용한 폴리카보네이트공중합체와 중합반응으로 제조되는 트리블록 공중합체를 제공하는 것을 목적으로 한다.a) 에폭사이드 화합물 및 이산화탄소를 중합반응시켜 말단부에 하이드록시기를 포함하는 폴리카보네이트 공중합체를 제조하는 단계; 및 b) 상기 말단부에 하이드록시기를 포함하는 폴리카보네이트 공중합체 및 락타이드계 단량체를 유기용매에 넣어 혼합한 혼합물을 유기금속촉매하 중합반응시키는 단계;를 포함하는 트리블록공중합체의 제조방법을 제공할 수 있다.
Abstract:
A method of manufacturing an activated carbon molding by continuous extrusion using a polymeric organic binder is provided to manufacture a molded product of active carbon having excellent mechanical strength, to simplify a manufacturing process, and to improve productivity. A method of manufacturing an activated carbon molding includes a step for extruding an activated charcoal composition including ~10 weight% of an inorganic material additive, 0~5 weight% of an organic compound lubricant, 20~50 weight% of an organic polymer binder, and 50~80 weight% of activated charcoal or metal-processed activated charcoal. The activated charcoal is made of a raw material like bituminous coal, peat, lignite, petroleum cokes, sawdust, coconut husk etc. The organic polymer binder uses a polymer selected from in general-purpose polyolefin.