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戊醇

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Sodium Benzoate, Amyl Cinnamal, Benzyl Alcohol, Eugenol, Hydroxy Citronellol, Benzyl Salicylate, Geraniol, Linalool, Citronellol, Benzyl Benzoate.

苯甲酸钠,戊Cinnamal ,苯甲醇,丁香酚,羟基香茅醇,水杨酸苄酯,香叶醇,芳樟醇,香茅醇,苯甲酸苄酯。

Glycine Soja Oil, Vitis Vinifera Seed Oil, Pistacia Vera Seed Oil, C 12-15 Alkyl Benzoate, Caprylic/Capric Triglyceride, Prunus Amygdalus Dulcis Oil, Fragrance, Tocopheryl Acetate, Lecithin, Amyl Cinnamal, Benzyl Benzoate, Citronellol, Geraniol, Limonene, Linalool.

野生大豆油,葡萄籽油,阿月浑子种子油和c 12月15日烷基苯甲酸,辛酸/癸甘油三酯,李野枣油,香水, Tocopheryl醋酸酯,卵磷脂,戊Cinnamal ,苯甲酸苄酯,香茅醇,香叶醇,柠檬烯,芳樟醇。

China,calcium carbide, acetic acid,vinyl acetate,pentaerythrite,polyvinyl butyral resin,polyvinyl butyral film,"AVS"paint for interior and exterior walls,cement,carbonized bricks etc,over 40 chemicals and building materials.

主要有聚乙烯醇系列产品、聚乙酸乙烯酯乳液系列产品、电石、冰醋酸、醋酸乙烯、季戊四醇、聚乙烯醇缩丁醛树脂、聚乙烯醇缩丁醛胶片、AVS内外墙涂料、水泥、碳化砖等40多种化工产品和建材产品。

The company,covering 4.2 square km,has eleven branch and subsidiary companies,and 4,737 employees,it mainly produces polyvinyl alcohol series,polyvinyl acetate emulsion ( commonly called"bairuijiao"in China),calcium carbide, acetic acid,vinyl acetate,pentaerythrite,polyvinyl butyral resin,polyvinyl butyral film,"AVS"paint for interior and exterior walls,cement,carbonized bricks etc,over 40 chemicals and building materials.

主要有聚乙烯醇系列产品,聚乙酸乙烯酯乳液系列产品,电石,冰醋酸,醋酸乙烯,季戊四醇,聚乙烯醇缩丁醛树脂,聚乙烯醇缩丁醛胶片,AVS内外墙涂料,水泥,碳化砖等40多种化工产品和建材产品。

To investigate the pollution levels, occurrence and distribution of estrogens, six estrogens in the surface sediments of Wenyuhe River were analyzed quantitatively by GC/MS following ultrasonicated extraction including diethylstilbestrol, estrone(E1),β-estradiol(E2), 17α-ethynylestradiol(EE2), estriol(E3), and β-estradiol 17-valerate. Six estrogen concentrations ranged from 0.39-36.6ng/g and the mean concentration was 10.2ng/g.

为了调查温榆河沉积物中雌激素物质的污染状况,采用超声萃取、GC/MS法研究了6种常用雌激素(包括己烯雌酚DES、雌酮E1、雌二醇E2、乙炔基雌二醇EE2、雌三醇E3和戊酸雌二醇EV)在北京温榆河上游及干流表层沉积物中的含量水平,并对其分布及来源情况进行了分析。

A series of polymer paraffin inhibitor with star shape structure have been synthesized from pentaerythrite, propanetriol binary acid and dibasic alcohol monoacid and monobasic alcohol which have different number of branch chain and different length of branch chain and different proportion of polar group, efficiency inhibiting paraffin of different structure paraffin inhibitor was evaluated.

用季戊四醇、丙三醇、二元酸、二元醇、一元酸和一元醇等合成了一系列不同支链数目、不同支链长度和不同极性基团比例的星型结构聚合物防蜡剂,评价了不同结构防蜡剂的防蜡率。

Given the current complexity of industrial recovery of 3'-methyl-2'-butenyl 3, 3-dimethyl-pentenoate and the decomposition problems with 2-methyl-1-butene, research was conducted on a process for direct recycling of MBDP involving an ester exchange reaction of MBDP with either methanol, trimethyl orthoacetate, or solutions of methanol and trimethyl orthoacetate.

针对目前工业上回收3,3-二甲基-4-戊烯酸-3'-甲基-2'-丁烯酯工艺复杂、异戊烯大量分解问题,研究了MBDP直接返回循环使用工艺,MBDP与甲醇、原乙酸三甲酯或与甲醇原乙酸三甲酯混合溶液进行酯交换反应的回收新工艺,比较了四异丙基钛酸酯、甲醇钠、氢氧化钾用作酯交换催化剂的效果,筛选出回收MBDP&一锅煮&最佳工艺:按照n:n:n:n=1.0:9.8:9.2:0.05物质的量比投料,74℃~78℃反应21h,MBDP转化为贲亭酸甲酯和异戊烯醇,单程转化率87.7%,用85%的磷酸中和甲醇钠,蒸出甲醇,直接用于合成贲亭酸甲酯。

Both star copolymer precursors are hydrolyzed in the acidic conditions, then the corresponding recovered star copolymers of EO and glycidol with multi pending hydroxylmethyls are esterified with 2-bromoisobutyryl bromide to produce the ATRP macroinitiators with multi pending bromoisobutyryl groups . Then the latters initiate the polymerization of styrene to form the corresponding amphiphilic three- and four-arm star PEO-g-PS.

在阴离子共聚EPEE单体和环氧乙烷单体的过程中,通过变换引发剂体系中的醇的结构(由原来的二元醇变成多元醇,如三羟甲基丙烷和季戊四醇),合成了星形结构的共聚物,通过水解反应脱去保护基团后,再与2-溴异丁酰溴反应,得到链的侧端挂有很多2-溴异丁酸酯基的星形大分子引发剂,通过ATRP聚合机理引发苯乙烯聚合得到PEO为主链,PS为侧链的星形一接枝共聚物。

The influences of the reaction time,the reaction temperature,the mole ratio of isovaleric acid to isoamyl alcohol,the quantity of solid surperacid catalysts on the conversion rate of iaovaleric acid were studied.

介绍了一种利用超强酸TiO2/SO2-4催化合成异戊酸异戊酯的新工艺,研究了固体超强酸催化剂用量、酸醇摩尔比、反应时间和反应温度对异戊酸转化率的影响。

In home, due to the shortage of polyester glycol, one of raw materials of preparing water-borne polyurethane, aromatic polyester glycols having designed molecular weight of 600,1000 and 2000 are synthesized in lab.

由于国内缺乏制备水性聚氨酯的原料聚酯二醇,实验自制了设计分子量为600、1000和2000的芳香族聚酯二醇;其中以邻苯二甲酸酐、间苯二甲酸、对苯二甲酸为二元酸,乙二醇、1,3—丙二醇和新戊二醇等为二元醇。

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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。