Abstract:
PURPOSE: A self-reactive acryl-based resin composition and an acryl-based polymer concrete pavement are provided to enable construction with ultrathin layers and low temperature quick hardening and to ensure an excellent adhesive property, water resistance, durability, noise reduction, and flexibility at low temperatures. CONSTITUTION: A self-reactive acryl-based resin composition comprises 20-40 parts by weight of PMMA, 20-35 parts by weight of MMA, 20-30 parts by weight of one or more kinds of methacrylate-based monomer excluding MMA, 5-15 parts by weight of urethane acrylate monomer, 0.1-5 parts by weight of cross-linking agent, and 1-10 parts by weight of polymerization accelerator.
Abstract:
PURPOSE: A low corrosive snow-removing agent with environmental affinity is provided to efficiently remove snow and not to be noxious to crops and/or soil by comprising specific compounds used as food additives, calcium formulation for fruit trees or agent for reforming the quality of soil instead of known harmful additives. CONSTITUTION: The snow-removing agent composition comprises calcium chloride as a principle component and calcium formate, coloration indicator and other additives as assisting components; especially, 92-99.5 wt.% of the calcium chloride (CaCl2.2H2O); 0.5-5 wt.% of sodium benzoate; 0.01-2 wt.% of calcium formate; 0.01-1 wt.% of calcium hydroxide; and 0.0001-0.0003 wt.% of coloration indicator. The composition is prepared by mixing all of the liquid and solid components with a rotating screw having a rotating rate of 25-30 rpm in a mixer at 60-90 deg.C. The liquid components are applied to the solid components in a weight amount of 3-5 weight parts to 100 weight parts of the solid components.
Abstract:
본 발명은 콘크리트 포장도로의 긴급 보수용 수지 콘크리트 조성물 및 이에 사용되는 수지의 제조방법에 관한 것으로ⅰ) 이소프탈산과 2가∼3가의 글리콜을 알콜/산의 당량비를 2∼2.5로 에스테르 촉매 존재하에 반응시켜 산가 2∼3의 프리폴리머를 제조하는 단계, ⅱ)상기 프리폴리머에 2가 알콜과 말레인산 및/또는 푸말산, 4수소 무수프탈산을 가하여 반응시켜 불포화 폴리에스테스를 제조하는 단계 및 ⅲ)상기 불포화 폴리 에스테르 수지에 스틸렌 모노머 및 열가소성 수지를 가하여 반응시켜서 콘크리트 조성물용 수지를 제조하고, 이와 같이 제조된 수지와 세골재 및/또는 조골재, 석분 및 경화제를 함유시켜서 된 수지 콘크리트 조성물 또는 몰타르를 제조하는데, 이로써 시공시 양생시간이 단축되고, 내약품성이 향상되며, 경화시 수축이 발생하지 � �는 등의 효과가 있다.