Abstract:
본 발명은 폴리(스티렌-알킬 아크릴레이트-무수 말레인산)의 아마이드 및 에스테르 공중합체를 포함하는 분산제에 관한 것이다. 본 발명의 폴리(스티렌-알킬 아크릴레이트-무수 말레인산) 아마이드 및 에스테르 분산제는 분자 구조 내에 탄화수소기와, 카르복실산 그룹 및 아마이드/에스테르 구조를 동시에 갖고 있어 연료유, 오일, 잉크, 페인트, 코팅제 등에 포함되는 다양한 종류의 카본, 안료 등을 효과적으로 분산할 수 있다.
Abstract:
PURPOSE: A dispersant is provided to effectively disperse various kinds of carbon, pigment, etc. which are comprised in fuel oil, ink, paint, coating agent, etc by simultaneously having a hydrocarbon group, a carboxylic acid group, and an amide/ester structure in a molecular structure. CONSTITUTION: A dispersant comprises an amide and ester copolymer of poly(styrene-alkyl acrylate-maleic anhydride) indicated in chemical formula 1. In chemical formula 1, R1 is hydrogen or a methyl group, R2 is a C1-C30 alkyl group, R3 is a C1-C30 alkyl group, l is 0.1-0.89, m is 0.1-0.89, n is 0.01-0.04, and o is 1-5. The weight average molecular weight of the dispersant is 2,000-20,000 g/mol and the degree of a molecular weight distribution is 1.0-5.0. [Reference numerals] (AA) Comparative embodiment 1; (BB) Embodiment 6; (CC) Embodiment 11; (DD) Embodiment 5; (EE) Embodiment 10; (FF) Embodiment 4; (GG) Embodiment 9; (HH) Embodiment 3; (II) Embodiment 8; (JJ) Embodiment 2; (KK) Embodiment 7; (LL) Embodiment 1
Abstract:
PURPOSE: A norbonene ester-based derivative is provided to replace a phthalate-based plasticizer which has safety problems for humans, and to able to be manufactured at room temperature and a normal pressure with a high yield. CONSTITUTION: A norbonene ester-based derivative is represented by chemical formula 1. In chemical formula 1, R is a C1-20, linear or branched alkylene group, n is an integer from 1 to 15. A manufacturing method of the norbonene ester-based derivative uses a Diels-Alder reaction of cyclopentadiene and diacrylate under the presence of an organic solvent and a Lewis acid at a temperature range of -20 to 100 °C. The Lewis catalyst is an aluminum-based, titanium-based tin or zinc. A amount used of the Lewis catalyst is 0.1-50 mol% based on the diacrylate.
Abstract:
PURPOSE: A norbonene diester derivative is provided to replace a phthalate-based plasticizer which has safety problems for humans and to solve a problem regarding the generation of an acidic byproduct and a problem regarding reaction solvent disposal due to a synthesis process or using an acidic catalyst. CONSTITUTION: A norbonene diester derivative is represented by chemical formula 1. In chemical formula 1, R^1 and R^2 can be the same or different from each other, and each is a C1-12 linear, branched or cyclic alkyl group. A manufacturing method of norbonene diester derivative in chemical formula 1 comprises a step of extracting norbonene monoester, which is obtained by reacting trialkyl borate and norbonene diacid at 100-200°C, by using acid-base extraction; and a step of reacting the norbonene monoester and the trialkyl borate.