Abstract:
PURPOSE: A N-(5-isoxazolinylmethyloxyphenyl)-dimethylmaleimide derivative is provided which has excellent stability against a rice plant and shows good herbicidal activity on weeds in a paddy like echor, scpju, moova, cypse, sagpy or so on. CONSTITUTION: The N-(5-isoxazolinylmethyloxyphenyl)-dimethylmaleimide derivative is shown in a chemical formula 1 wherein R is alkyl radical with 1-5 carbon number, phenyl radical or substituted phenyl radical, cyano radical, carboxylic acid or carboxylic ester, heterocyclic or substituted heterocyclic radical. The substituted phenyl radical or substituted heterocyclic radical is simply or mixedly substituted from 1-3 radicals among alkyl radical with 1-3 carbon number, alkoxy radial with 1-3 carbon number, halogen atom, cyano radical, nitro radical, carboxyl radical and carboxylic ester.
Abstract:
PURPOSE: Provided is a preparation method of 3(-(hydroxymethyl)tetrahydrofuran) represented by the formula (1) which is used as an intermediate raw material of drugs and insecticide. Thereby the compound is simply and easily prepared compared to the conventional methods. CONSTITUTION: (3-(hydroxymethyl)tetrahydrofuran) of the formula (1) is prepared by cyclization reaction of 2-hydroxymethyl-4-alkene-1-ol derivative of the formula (2) in the presence of I2 catalyst in organic solvent, wherein R1, R2 and R3 are C1-C4 alkyl or phenyl selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl and t-butyl, respectively.
Abstract:
Title derivatives(I; R1, R2= same or not, H, fluro, chlorro, bromo, C1-3 alkyl, C1-3 alkoxy; R1 and R2 are formed a fused ring such as -CH=CH-CH=CH-; R3= H, C1-4 alkyl, C3-6 alkenyl, etc.), useful as herbicides were prepared. Thus, 3.03 g 4-fluorophenol was reacted with 1.9 ml ethyl chloride, followed by addition of 4.0 g anhydrous aluminium chloride at 180 deg.C for 30 minutes to give 2.71 g 2-hydroxy-5-fluoroacetophenone(III). III and 1.05 g ethyl carbamate were refluxed for 20- 30 hours in 50 ml n-propanol to give ethoxycarbonylhydrazone derivatives IV. 2.41 g IV was dissolved in 100 ml tetrahydrofuran, adding 4.44 g (CH3COO)4Pb as an oxidation agent at room temperature for 3- 5 hours to give ethyl 0-acetylarylcarboxylate derivatives(V). 2.1 g V and 0.83 g 4-chloro-2-fluoro-5-hydroxyaniline were refluxed for 20- 30 hours in a mixed solvent of 50 ml o-dichlorobenzene and acetic acid to give 2,3-dihydro-3-methylene- 2-(4-chloro-2-fluoro-3-hydroxyphenyl)-1H-isoindol-1-one(VII). VII was refluxed for 20 hours to give 2,3-dihydro-3-methylene-2- (3-propagyloxy-4-chloro-2-fluorophenyl)-1H-isoindol-1-one(I).
Abstract:
본 발명은 탄소나노볼에 팔라듐을 담지한 불균일 촉매 및 상기 촉매하에서 아세틸렌 가스와 다양한 아릴 할라이드(aryl halide)를 반응시켜 단 한 단계에 산업적으로 유용성이 높은 디아릴아세틸렌 화합물들을 높은 수율로 제조하는 방법에 관한 것으로, 본 발명에 따른 팔라듐을 담지한 탄소나노볼 불균일 촉매는 회수하여 반복 사용할 수 있어 디아릴아세틸렌 화합물의 대량생산이 가능하며, 반응을 한 단계만으로 끝낼 수 있어 기존의 수율 감소 문제를 해결할 수 있다.
Abstract:
본 발명은 하기 화학식 2로 표시되는 3관능성 [1,1';3',1'']Terphenyl-4,5',4''-triol 화합물을 에폭시화한 저융점의 에폭시 수지 및 상기 에폭시 수지에 경화제 등을 더 포함하여 이루어지는 에폭시 수지 조성물과 이 조성물로부터 얻어지는 에폭시 수지 경화물에 관한 것이다. 본 발명의 따른 에폭시 수지 경화물은 할로겐계 화합물이나 인계 난연제를 사용하지 않고도 높은 난연성을 나타내고 내충격성, 내흡수성, 내열성이 우수하여 반도체 밀봉재, 인쇄 회로 기판, 도료, 접착, 주형 용도 등에 적합하게 사용할 수 있다. [화학식 2]
Abstract:
본발명은 a) C1~C14의알킬기를갖는 (메타)아크릴레이트계단량체; 히드록시기를갖는 (메타)아크릴레이트계단량체, 카복실기를갖는 (메타)아크릴레이트계단량체또는이들의혼합물;을중합하는단계; 및 b) 상기중합체에 C8~C12의알킬글리시딜에테르를투입하여그라프트(부가반응)하여중합하는단계;를포함하는점착제조성물의제조방법및 이의제조방법으로부터제조된점착제조성물에관한것이다.본발명에따른점착제조성물은젖음성및 재박리성이우수하다.
Abstract:
PURPOSE: A flame retardant composition using biguanide phosphate compounds is provided to ensure excellent thermal resistance. CONSTITUTION: A biguanide phosphate compound is denoted by chemical formula 1. The compound is prepared by reacting dicyandiamide and ammonium phosphate and is neutral. A flame retardant composition contains the compound of chemical formula 1. A thermoplastic resin composition with excellent flame retardancy contains 100 weight parts of thermoplastic resin and 1-50 weight parts of the compound of chemical formula 1. The thermoplastic resin composition further contains organic phosphate ester compounds, magnesium, aluminum, fluorinated polyolefin, organic metal compounds, zinc borate, tetrafluoro ethylene or fluorinated vinylidene polymers or copolymers.