In this thesis, the development of emulsion polymerization theory and related new technologies are comprehensively reviewed, and the synthetic technologies of acrylate latex modified by organosilicon both at home and abroad are also reviewed. based on the current development and research in this field, attentions of this study are focused on three ways for preparing novel acrylate latexes modified by organosilicons, that is, 1 ) the acrylate monomers are copolymerized with unsaturated silicons by emulsion copolymerization ; 2 ) a new latex with microphase separation morphology is synthesized, which shows a core - shell structure character ; 3 ) soap - free polymerization is explored for preparing a higher - performance latex using an unsaturated silicon monomer, different acrylates and a reactive emulsifier. by using techniques of delaying addition of organosilicon monomer and a hydrolysis inhibitor, the hydrolysis and condensation of 3 - ( trimethoxysilyl ) propyl methacrylate during polymerization can be effectively prevented, as a result, organosilicon content in the macromolecular chain is increased
同時採用有機硅單體延遲滴加及添加水解抑制劑等技術,有效防止了-甲
基丙烯
酰氧基丙
基三甲
氧基硅烷在乳液聚合過程中的過渡水解及縮合反應,提高了聚合物大分子鏈中有機硅鏈節的含量;利用紅外光譜與差示掃描量熱儀對產物分子結構進行了表徵,並通過對共聚產物力學和吸水率的測試,證實了本研究所制備的有機硅改性丙烯酸酯共聚物具有比純丙烯酸酯聚合物更優良的力學及耐水性能;從分子設計角度出發,利用醇解反應合成出水解、縮合反應速率較慢的兩種新型不飽和有機硅單體: ?甲
基丙烯
酰氧基丙
基三乙
氧基硅烷和?甲
基丙烯
酰氧基丙
基三異丙
氧基硅烷;利用核磁共振對新型硅烷單體結構進行了證實;研究表明利用新型硅烷單體可以制備出高硅烷含量的有機硅改性丙烯酸酯乳液,且其聚合產物具有較高的力學及耐水性能。
Synthesis of 7 - hydroxy - 4 - methyl coumarin on stannic chloride anhydrous catalyst
乙
酰氧基香豆素的合成
Determination of 3, 5 - dicaffeoyloxy cyclohexane carboxylic acid in erigeron breviscapus by hplc assay
雙咖啡
酰氧基奎寧酸的含量
( 2 ) an aminobenthiazole schiff base has been synthesized as a new fluorescence carrier by reacting 2 - aminobenthiazole with p - allyoxybenzoldohyde. the new kind of schiff base can be utilized for preparing an optical sensor, used for determining furazolidone based on the fluorescence quenching. aminobenthiazole schiff base immobilized on a glass plate surface by covalent bonding can circumvent the leakage of the fluorephore from the sensor surface and guarantee a relatively long working lifetime
( 3 )用強熒光
基團2 -氨
基苯並蒽酮與對烯丙
氧基苯甲醛合成了另一種新的schiff堿類化合物,與甲
基丙烯酸羥乙酯、丙烯
酰胺、環乙二醇二丙烯酸酯共聚制得光極膜,制備了一種苯並蒽酮schiff堿光化學傳感器,可用於單質碘的測定。
Synthesis of novel thioureas and thiosemicarbazides containing 1, 2, 3 - triazole
對甲
氧基苯甲
酰基氨
基硫脲的合成與表徵
Melatonin ( n - acetyl - 5 - methoxytryptamine ) was discovered by a lerner and his colleagues [ l ] as the principal hormone of vertebrate pineal gland, an unpaired appendage of the brain in most vertebrates and named by him after its effects on amphibian melanophore. however, it is now known that many cells and tissues synthesis and the nature of organisms, melatonin is secreted in the night, thus, melatonin is identified as an endocreine index of the darkness and referred to as darkness hormone [ 3 ]. melatonin has aslo been called by other names, such as nature ' s sleeping pill for it role in sleep - wake cycles, and circadian glue for its increasing importance in the regulation of circadian and circannual physiological and behavioural functions, moreover it is also involved in the regulation of the immune respone and various cns activies, in the last decade, considerable attention has been devoted to the pharmacology of melatonin in view of its potential applications in various therapeutic areas
褪黑素( n -乙
酰- 5 -甲
氧基色胺, melatonin ,簡稱mt ) ,由lerner和他的同事們發現[ 1 ] ,后來根據它對兩棲動物黑色素細胞的影響而命名,是脊椎動物松果腺分泌的一種重要激素。松果體在大多數多脊椎動物中是一個孤立的附屬器官。然而,現在眾所周知很多細胞和組織合成mt ,若不考慮合成的位點和機體的屬性, mt在晚上分泌,正因如此, mt被認為是一種黑暗的內源性指標,被稱作黑色激素[ 3 ] 。
Chemical analysis methods and determination of physical performance of alumina determination of vanadic oxide content - n - benzoyi - n - phenylhydroxylamine extraction photometric method
氧化鋁化學分析方法和物理性能測定方法苯甲
酰苯
基羥胺萃取光度法測定五
氧化二釩含量
Through molecular design, a series of liquid crystalline copolyesters, which possibly possessed the auxetic behavior, were prepared by solution condensation reaction between 2, 5 - bis ( p - alkoxy benzoyloxy ) hydrobenzoquinone, 4, 4 ' - ( decanoxy ) dibenzoyl chloride and 4, 4 ' - dihydroxy - oc, co - diphenoxydecane
經分子設計,通過2 , 5 ?二(對烷
氧基苯
酰氧基)對苯二酚、 4 , 4 』 ?二羥
基? , ?二苯
氧基癸烷和4 , 4 』 ? (癸二
酰氧基)二苯甲
酰氯之間的縮合反應合成了一系列具有負泊松比潛能的液晶共聚酯。
A super acylation catalyst, 4 - dimethylamino pyridine ( dmap ), was prepared and used to synthesize cholesteryl ester compounds. four kinds of cholesteryl ester compounds such as cholesteryl p - alkoxyl benzoate, cholesteryl dicarboxylate, cholesteryl lumequeic ester and coattail - like cholesteryl ester were synthesized by acylation method and super acylation catalyst method. chemical structures and liquid crystal behaviors of the synthesized samples have been characterized by using element analysis, ftir, dsc and polarized microscopy with a hot stage
本文合成了高效
酰化催化劑4 -二甲
基氨
基吡啶( 4 - dimethylaminopyridine , dmap ) ,採用
酰氯化法和高效
酰化催化劑法分別合成了對烷
氧基苯甲酸膽甾醇酯、對稱脂族二羧酸膽甾醇酯、烯酸膽甾醇酯及燕尾型膽甾醇酯四類膽甾醇酯衍生物,並進行了化學結構和液晶性能的表徵。
The preparation of optically active composite is a promising alternative to obtain a kind of new and competitive sensing membrane for fiber optic sensors, and has attracted the global attention. in this thesis, the modified sol - gel sensing membranes based on fluorescence quenching have been prepared by using tetraethoxysilane ( teos ) and dimthyldimethoxysilane ( dds ) as the main material, formamide as the drying control chemical additive ( dcca ), ru ( phen ) 3cl2 and ru ( bpy ) 3cl2 as the indicator. this kind of membranes is crack - free and has low indicator - leaking rate
本文以四乙
氧基硅烷( teos ) 、二甲
基二乙
氧基硅烷( dds )為主要原料,以甲
酰胺為控制乾燥劑,二價釕離子絡合物釕( ) ?聯吡啶( ru ( bpy ) _ 3cl _ 2 )和釕( ) ?菲咯啉( ru ( phen ) _ 3cl _ 2 )為熒光指示劑,採用改進的溶膠凝膠技術,通過添加控制乾燥劑和有機摻雜兩種手段,制備了
基於熒光猝滅原理的光纖
氧敏感膜。
Usually used in operation in hospital, skin and instrument antisepsis in injection, sterilization, prevent communicate in surgery and dermatology department ; antisepsis for family tableware and implement ; antisepsisand animal illness prevention and cure for food industry and livestock breeding industry and so on
又因為分子具有
酰胺鍵及吸附多酚分子上的氫
氧基從而形成氫鍵,因此,可用作啤酒果酒飲料酒的穩定劑,延長其保質期達三百天,並改善其透明度色澤和味道。
Asa efficient plant water retention agent ( english name : asa ) : mainly consists of plant extracts, 2 - ( acetoxyl group ) benzoic acid
高效植物保水劑,英文名: asa ,其主要成份為植物提取物2 - (乙
酰氧基)苯甲酸。
Their fluorescence emission properties were studied and their photolysis kinetics was investigated in different media by means of steady state photolysis method
考察了其熒光光譜特性,發現甲
氧基苯甲
酰亞甲
基光產堿劑的熒光量子效率較低,而萘甲
酰亞甲
基光產堿劑較高。
Abstract : aim to synthesize a new prodrug, resveratrol trinicotinate. methods in presence of lithium and a catalytic amount of naphthalene, the reaction of p - methoxybenzyl trimethylsilyl ether and 3, 5 - dimethoxylbenzaldehyde gave resveratrol after a series of translation. resveratrol trinicotinate was obtained by the reaction of resveratrol and nicotinoyl chloride hydrochloride. results a mutual prodrug resveratrol trinicotinate was designed and synthesized. conclusion a novel method for synthesis of resveratrol and resveratrol trinicotinate has been afforded. the e - isomer is selectivily obtained by dehydration of the compound 2 with khso4
文摘:目的合成一種前藥白藜蘆醇煙酸酯.方法在金屬鋰片和催化量的萘的存在下, 3 , 5 -二甲
氧基苯甲醛與對甲
氧基苯甲醇的三甲
基硅醚反應經過一系列轉變得到白藜蘆醇,白藜蘆醇與煙
酰氯反應得到白藜蘆醇煙酸酯.結果設計併合成了白藜蘆醇煙酸酯.結論提供了一種合成白藜蘆醇及白藜蘆醇煙酸酯的方法,採用khso4脫水可選擇性的得到反式產物
Chemical company located in the garden city of hubei avenue traffic developed, hubei is one of the key enterprises, the main production of medicines, pesticides intermediate, the main product b chloride, chlorine b chloride, phenol de mdma, 2, 3 - amounts jiben formaldehyde, 2, 3 - two chlorobenzene formaldehyde, 3, 5 - two regards formaldehyde, the benyi methadone, the benyisuan
仙桃市金聯化工有限公司位於交通發達的湖北仙桃,是湖北省重點企業之一,主要生產各種醫藥、農藥中間體,主要產品乙
酰氯、氯乙
酰氯、對芐
氧基苯酚、 2 , 3 -二甲
基苯甲醛、 2 , 3 -二氯苯甲醛、 3 , 5 -二羥
基苯甲醛、聯苯乙酮、聯苯乙酸。
A quantum chemical study on the electrochemical synthesis of sorbic acid precusors
電化學法合成山梨酸前體乙
酰氧基己烯酸的量子化學研究
3. the low dielectric silicate films were prepared by using poss sol - gel from hydrolyzation and condensation of y - methyl acryloyloxy propyl - triethoxysilane as template, and characterized by afm, bet and ellipsometer. a film with dielectric constant as low as 2. 7 was obtained
3 、利用- (甲
基丙稀
酰氧)丙
基三甲
氧基硅烷水解縮和得到的poss溶膠作為模板劑制備得到了低介電薄膜材料,討論了旋膜轉速對薄膜厚度的影響。
Steel tubes. internal two layers coating with phenol resin or epoxy resin and polyamide based coating
鋼管.帶有酚醛樹脂或環氧樹脂及聚酰胺基塗層的內部雙層覆層