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STUDY ON A NEW TECHNOLOGY OF SYNTHESIZING HYDROGENATED ROSIN ETHYL ESTER 合成氢化松香乙酯的新工艺研究
rosin ethyl ester 松香乙酯
The major aromas were hexylic acid ethyl ester, benzyl ethanol, octylic acid and octylic acid ethyl ester. 主体风味成分是己酸乙酯、苯乙醇、辛酸和辛酸乙酯。
The major chemical constitutes in essential oil were ester and alcoho.The major chemical compound was butanoic acid ethyl ester (86.89%). 其主要成分是酯类、醇类物质，其中丁酸乙酯的相对含量高达86.;89%25。
The content of active component 3,4,5-trimethoxy-trans-cinnamic ethyl ester of Radix Polygalae in Fumaiding Granules was determined by TLC-scanner. 采用薄层扫描法对复脉定冲剂中远志有效成分3，4，5－三甲氧基反式肉桂酸乙酯的含量进行测定。
The major chemical constitutes in essential oil were ester and alcoho.The major chemical compound was butanoic acid ethyl ester((86.89%)). 其主要成分是酯类、醇类物质;其中丁酸乙酯的相对含量高达86.;89%25。
The main components in ethanol-extracts are psoralen, hexadecanoic acid, hexadecanoic acid ethyl ester, bergapten, oleic acid and linoleic acid. 其乙醇提取物中以补骨脂素、十六酸、十六酸乙酯、佛手内酯、油酸、亚油酸为主。
Internal standard method for determinating the contents of DHA and EPA in fish oil, fatty acid and fatty acid ethyl ester? 内标法测定鱼油及脂肪酸与脂肪酸乙酯中 DHA 和 EPA 含量
Any of several esters, other than the ethyl ester, of carbamic acid. 聚氨脂一种氨基甲酸中除乙基酯以外的酯
Preparation of L-lysine ethyl ester diisocynanate from L-lysine by esterfication and isocyanation with triphosgene was described. 以L-赖氨酸为原料经乙酯化后与三光气反应合成了L-赖氨酸乙酯二异氰酸酯。
Abstract： Preparation of L-lysine ethyl ester diisocynanate from L-lysine by esterfication and isocyanation with triphosgene was described. 摘要：以L-赖氨酸为原料经乙酯化后与三光气反应合成了L-赖氨酸乙酯二异氰酸酯。
Poly[bis(glycine ethyl ester)phosphazene]/poly(D,L-lactide-co-glycolide) blends was one kind of novel biodegradable materials. 聚[(双-甘氨酸乙酯)膦腈]/聚(丙交酯-共-乙交酯)共混物是一类新型的生物降解材料。
The ethyl ester of conjugated linoleic acid(CLA)was synthesized with ethyl ester of safflower oil as raw material and with kalium alcoholate(KOCH2CH3)as catalyzer. 以乙醇钾为催化剂催化共轭化红花籽油乙酯制备共轭亚油酸乙酯。
The liquor contains rich microconstituents, low-molecular organic acids, higher fatty acid, ethyl ester, and phenolic compound etc., which are helpful for people's health. 特殊的酿造工艺赋予了酒体中丰富的微量元素、低分子有机酸、高级脂肪酸及乙酯、酚类化合物等微量成分对人体健康有良好的功效。
In the process of Formylchloroacetic acid ethyl ester synthesis, this paper compares the variety of output by changing the lime of chemical reaction and the quantity of raw material of ethel formate. 在甲酰氯乙酸乙酯的合成过程中,通过改变反应时间及原料甲酸乙酯的投料量来比较产量的变化,以确定提高合成率的最佳条件。
The structure of polyunsaturated fatty acid ethyl ester in fish oils were characterized by 1 H and 13C NMR, and assignment of peaks were made by means of 1H - 1H homo-nuclear shift correlation( COSY) and 1H - 13C chemical shift correlation ( HETCOR). 利用~1H、~(13)C核磁共振波谱,对鱼油多烯脂肪酸乙酯的结构进行了表征,并通过二维H-~1H相关谱(COSY)和~1H-~(13)C化学位移相关谱(HETCOR)对各共振峰进行了指认。
By using bicycle [2. 2. 1] hept-5-ene-2, 3-dicarboxylic acid ethyl ester, benzonphe-nonetetracarboxylic acid diethyl ester and methylene dianiline as monomers and ethanol as solvent "PMR" polyimide was synthesized. 合成了以乙醇为溶剂;双环[2.;2
Transesterification of soybean oil and ethanol catalyzed by KOH catalyst to prepare ethyl ester of soybean oil was studied,and its application in printing industry was investigated. 以大豆油为原料,在催化剂KOH作用下,探讨大豆油与乙醇进行酯交换反应工艺,并对大豆油脂肪酸乙酯在印刷领域的应用进行论述。
The compound 8 was synthesized by 4-nitrophenyl-hydrazine and 2- oxo-propionic acid ethyl ester by nucleophilic addition, rearrangement by total yield 67.9%, and the cost was decreased. 以对硝基苯肼、丙酮酸乙酯为原料，经亲核加成、环化（2步总收率67.;9%25）合成了化合物8，降低了生产成本。