Abstract:
PURPOSE: An anionic multi-chain type surfactant using alkali metal salt of 1,5-dialkoxymethyl-3-aza-3-methyl-1,5-pentanedisulfuric acids and a manufacturing method thereof are provided to form micelle at 30-90 times lower concentration than sodium lauryl sulfate. CONSTITUTION: An anionic multi-chain type surfactant has a structure marked as chemical formula 1. In the chemical formula 1, R1 and R2 respectively indicate C1-C30 linear alkyl or branched alkyl, and M is selected from alkali metal. The alkyl can include unsaturated bond and substitute for fluorine or aromatic ring. The anionic multi chain type surfactant has 20-80ppm range of critical micelle concentration value and 72-80 range of HLB value.
Abstract:
PURPOSE: A polymer composition is provided to efficiently prepare polymers using specific monomers and to ensure higher calcium ion sequestering effects than existing polyacrylic acids. CONSTITUTION: A polymer composition for sequestering calcium ions comprises a monomer of chemical formula 1 and a (meth)acrylic acid monomer. In chemical formula 1, R1 is hydrogen or methyl and n is 1~10. In chemical formula 2, R2 is hydrogen or methyl, and R3 is hydrogen, sodium, potassium or ammonium. The polymer composition further includes one or two or more selected from maleic acid, maleic anhydride, and 2-methoxypolyethoxyethyl (meth)acrylate.
Abstract:
A manufacturing method of zinc-comprising mixed metal oxide is provided to form uniform particles by using a distributed system and to manufacture method of producing a catalytic of the mixed metal oxide containing a zinc of which an average diameter mostly is less than 200 nm. A mixed solution containing a metal precursor and a molding material is manufactured. The metal precursor is made of one or more materials and a zinc precursor. The one or more materials are selected from chrome precursor, aluminum precursor or a barium precursor. The coprecipitation material is manufactured by injecting precipitation agent into the mixed solution. A zinc-comprising mixed metal oxide of a chemical formula 1 (Zn_a-Cr_b-Al_c-Ba_d-O_e) is manufactured by drying and plasticizing the obtained coprecipitation material. In the chemical formula 1, a is a molar ratio of a Zn atom, B is a molar ratio of a Cr atom, C is a molar ratio of an Al atom, D is a molar ratio of a Ba atom and E is a molar ratio of an O atom.
Abstract:
본 발명은 인산칼슘 시멘트에 관한 것으로서, 더욱 상세하게는 제2인산칼슘, 제4인산칼슘, α형 제3인산칼슘 등과 같은 인산칼슘 분말에 폴리아스파틱산(polyaspartic acid, PAA), 폴리글루탐산(polyglutarmic acid, PGA), 알긴산( alginic acid, AA), 카라기난산(carrageenanic acid, CA) 등과 같은 생분해성이며 물에 녹지 않는 고분자 유기산 화합물(polymeric acid)분말을 혼합한 골접합용 인산칼슘 시멘트로서, 강도가 우수한 인산칼슘 시멘트에 관한 것이다. 인산칼슘, 시멘트, 생분해성, 고분자 유기산, 골접합