酯

It shows that the method is reliable and can be utilized to improve the efficiency of PET equipment. This method can also apply to the esterify reaction process of PBT and PTT.

该反应精馏法亦可应用于生产聚对苯二甲酸丁二醇酯、聚对苯二甲酸丙二醇酯的酯化反应部分。

The article adopted the method of orthogonal design using Polyethylene Glycol and Methacrylic Acid to esterify Polythylene-glycol-mono Methacrylate, then using PMA, MAA and Methacrylic Acid Sulfonic Sodium as raw material to synthesize Polycarboxylic type water-reducer.

用正交实验法研究了聚乙二醇和甲基丙烯酸酯化合成聚乙二醇单甲基丙烯酸酯的合成工艺，以该酯化物与MAA和甲基丙烯酸磺酸钠为原料，在引发剂的作用下合成聚羧酸系减水剂。

Polyester polyol which was used for polyurethane hot melt adhesives was synthesized by the condensation polymerization of adipic acid and ethanediol, butanediol, hexanediol.

以己二酸、乙二醇、丁二醇、己二醇为原料进行酯化、缩聚反应，以钛酸丁酯为催化剂，采用阶梯式升温方式，合成了聚氨酯热熔胶用已二酸系聚酯多元醇；考察了醇酸摩尔比、催化剂种类和用量以及反应条件对酯化、缩聚反应的影响。

Experimental results show that esterification reaction proceeds effectively at 200℃ with ferric sulfate as catalyst.

论文研究选用硫酸铁作酯化反应的催化剂，在醇酸摩尔比10：1.0，酯化温度200℃，酯化时间2小时。

Transesterification of geranol and vinyl acetate in ionic liquids were investigated to synthesize geranyl acetate using immobilized Candida antarctica lipase B as biocatalyst. The reuse of ionic liquids and lipase were also studied in this reaction.

以固定化的南极假丝酵母脂肪酶为催化用酶催化香叶醇和乙酸乙烯酯在离子液体中的酯交换反应，合成了香料乙酸香叶酯，同时通过该反应了解了酶和离子液体的重复利用性。

Chapter 2 has analysized the conversly synthetic means of solanesol and designed novelly synthetic routes of solanesol and key intermediate Chapter 3 has summarized the preparation of trans-3-methyl-4-hydroxy (bromo-2-butenyl oxy methyl benzene In chapter 4 ,a novel technology of important intermediate(all trans-8-bromo geranyl acetate),which is suitable for industrial procedure , was found .meanwhile,an another new way has been invented ,of which the key intermediate (all trans-8-hydroxy geranyl acetate) has been produced.

第二部分分析了茄尼醇的逆合成方法，设计了一条适合于合成茄尼醇的合成路线及其重要中间体的合成路线。第三部分研究了重要中间体[Trans-3-甲基-4-羟基-2-丁烯基乙酰基(苄基，2，3-二氢吡喃基)醚]的合成新方法，找到了一条适合于工业化生产的制备反式-3-甲基-4-羟基-2-丁烯基苄基醚的新方法。第四部分研究了重要中间体[-3，7-二甲基-8-羟基-2，6-辛二烯-1-醇乙酸酯、-3，7-二甲基-8-溴-2，6-辛二烯-1-醇乙酸酯]的合成新方法，找到了一条适合于工业化生产的制备它们的新方法；同时研究了一条制备-3，7-二甲基-8-羟基-2，6-辛二烯-1-醇乙酸酯的另一新方法。

Firstly, the reactions of glutaric acid, sebacic acid and propargyl alcohol afforded two dipropargylesters:(CH≡CCH_2OCO)_2(CH_2)_3 (compound 1) and (CH≡CCH_2OCO)_2 (CH_2)_8 (compound 2),respectively.

首先，本文分别选用戊二酸，癸二酸与丙炔醇反应得到了两个新的有机二酸二丙炔醇酯：戊二酸二丙炔醇酯(CH≡CCH_2OCO)_2(CH_2)_3(化合物1)和癸二酸二丙炔醇酯(CH≡CCH_2OCO)_2(CH_2)_8(化合物2)。

Stability of electrodeposition liquid, the physical and chemical resistance properties of the film depend on amine value, kinds of glycidic ester used, GA content and the amount of blocked polyisocyanate used.

结果表明，环氧基在固化过程中会参与交联反应，电泳液的稳定性、涂膜的物理性能和耐化学品性能由胺值、缩水甘油酯单体种类、丙烯酸缩水甘油酯含量和封闭型多异氰酸酯用量等因素决定。

Water, Sodium Laureth Sulfate, Cocamidopropyl Betaine, Cocamide MEA, Disodium Cocamphodiacetate, Sodium Lauryl Sulfate, PEG 40 Hydrogenated Castor Oil, Perfume, Sodium Chloride, Propylene Glycol, Quaternium 80, Methylparaben, Polyquaternium 10, Hydroxypropyl Guar Hydroxpropyltrimonium Chloride, Citric Acid, Diazolidinyl Urea, Tetrasodium EDTA, Polyquaternium 7, Propylparaben, Sodium Hydroxide, Panthenol, Persea Gratissima Oil, Penta Sodium Pentetate, Hedera Helix Extract, Bambusa Vulgaris Extract

水，月桂醇聚醚硫酸酯钠，椰油酰胺丙基甜菜碱，椰油酰胺MEA，椰油酰两性基二乙酸二钠，月桂醇硫酸酯钠，PEG 40 氢化篦麻油，香料，氯化钠，丙二醇，季铵盐-80，苯甲酸甲脂，聚季铵盐-10，羟丙基瓜尔胶羟丙基三甲基氯化铵，柠檬酸，重氮烷基咪唑脲，乙二氨四醋酸四钠，聚季铵盐-7，对羟基苯甲酸丙酯，氢氧化钠，泛酰醇，酪梨油，喷替酸五钠，常春藤萃取物，银竹萃取物。

The results indicated that the total quantity of volatile components in grape wine after MLF had increased and there were evident difference in the contents and proportion of isoamyl alcohol, 2-ethyl hydracrylic acid, ethyl succinate, and acetic acid in the two kinds of grape wine treated or not treated by MLF.

结果表明，MLF葡萄酒较未经MLF的葡萄酒中挥发性成分的总量有所提高；异戊醇、2-羟基丙酸乙酯、琥珀酸乙酯和醋酸在两工艺的葡萄酒中的含量和比例存在明显差异；乳酸、乳酸乙酯和两种未能准确鉴定的物质只在MLF葡萄酒中作为主要成分被分离检测到。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。