环乙烯

Epoxides, episulphides and ethylene imines also polymerize via similar cyclic onium ion mechanisms.

环氧化合物，环硫化合物和乙烯亚胺也可以按类似于环氧？睦胱拥幕？理进行聚合。

Epoxides, episulphides and ethylene imines also polymerize via similar cyclic onium ion mechanisms

环氧化合物，环硫化合物和乙烯亚胺也可以按类似于环氧？

The company's products include: silane coupling agent KH-550, KH-560, KH-570, KH-602 and other models, perchlorethylene resin, high-chlorinated polyethylene resins, pigments, PCE, ethyl cellulose, poly vinyl perfluoro-C (F46 fluorine resin) silicone oil, dichloromethane, dichloroethane, cyclohexanone, protopine, ion exchange resin, epoxy resin, PF and other chemical raw materials, are manufacture of fine chemicals, adhesives, paint remover, paint, paint, antifreeze and other products of the basic raw materials.

本公司经营的产品有：硅烷偶联剂KH-550，KH-560，KH-570，KH-602等型号，过氯乙烯树脂、高氯化聚乙烯树脂、颜料、四氯乙烯、乙基纤维素，聚全氟丙乙烯树脂（F46氟树脂）硅油、二氯甲烷、二氯乙烷、环己酮、片碱、离子交换树脂、环氧树脂、PF等各种化工原料，是制造精细化工，粘合剂，脱漆剂，涂料，油漆，防冻液等产品的基本原料。

Resin transfer molding mould was manufactured with bisphenol-A epoxide vinylester resin as matrix,poly as low shrinkage additive and glass fiber tricot as reinforcing material,according to the basic requirement of matrix resin of RTM mould.

根据树脂传递模塑模具对基体树脂的基本要求，选用双酚A环氧乙烯基酯树脂为基体，聚乙酸乙烯酯为低收缩添加剂，玻璃纤维经编织物为增强材料，并加入相应的助剂，制备了复合材料RTM模具。

Three kinds of CpTiCl had been synthesized when was catechol , 2, 2′-biphenol , or 2, 2′-binaphthol , respectively. In the case of CpTiCl〓, was 8-hydroxylquinoline , 2-methyl-8-hydroxyl-quinoline , and 8hydroxyl-5-nitro-quinoline , respectively.

研究表明，这三类半茂钛配合物在助催化剂MAO作用下，于30℃、0.1MPa乙烯压力下均可催化乙烯聚合，并显示较高的活性，远高于未引入非茂配体的CpTiCl〓及不含茂环的相应非茂配合物的活性，这说明同时含一个茂配体和一个非茂配体的半茂配合物是烯烃聚合的优良催化剂。

Compounds were determined from more than 3 stages, including germacrene D, caryophyllene, phenol, 2, 6-bis (1, 1-dimethylethyl)-4-methyl-,β-elemene,γ-elemene, 1-octanol, 2-butyl-, dibutyl phthalate, cyclohexane, 1-ethenyl-1-methyl-2-(1-methylethenyl)-4(1-methylethylidene)-and butyl caprylate.

其中，3个时期以上能检测到相同的化学成分有9种，分别是大牻牛儿烯D、丁香烯、2，6-二叔丁基－4-甲基苯酚、β-榄香烯、γ-榄香烯、2-丁基－1-辛醇、邻苯二甲酸二丁酯、1-乙烯基－1-甲基－2-（1-甲基乙烯基）－4-（1-甲基亚乙烯基）环己烷和辛酸丁酯。

Use D4 or DMC, Divinyl tetramethyl disiloxane, Tetravinyl tetramethyl cyelo tetrasiloxane were used as raw materials and Tetramethyl ammonium hydroxide as catalyst to synthesize a high molecular weight of vinyl silicone oil. Concentrate hydrosilicone oil, tetramethyl dihydro disiloxane, hexamethyldisiloxane and D4 were used to synthesize the cross linker of low-hydro silicone oil required in experiments.

以D4或DMC，乙烯基双封头，乙烯基环体等为原料，四甲基氢氧化铵为催化剂合成了不同摩尔质量的乙烯基硅油；以高含氢硅油，含氢双封头，六甲基二硅氧烷，D4合成实验所需的交联剂低含氢硅油。

The invention relates to a mixed additive used in lithium secondary battery electrolyte, which is characterized in that: its components comprises that biphenyl at 0.5-95.4%, phenylcyclohexyl at 1.1-93.8%, vinylene carbonate at 0.4-93.2%, tertiary carbon alkyl benzene at 0.5-96.5%; and ethenyl sulfonyl benzene at

本发明公开了一种锂离子二次电池电解液用混合添加剂，其特征在于：组分与重量％分别是：联苯类0.5％～95.4％；环己基苯类1.1％～93.8％；碳酸亚乙烯酯0.4％～93.2％；叔碳烷基苯0.5％～96.5％；乙烯基硫酰苯0.5％～95.8％。

First, 4-(2, 3-epoxypropoxyl) benzaldehyde was obtained by reaction of 4-hydroxy benzaldehyde and epichlorohydrin. Then, the Wittig reaction was carried out to convert EBD to styryl glycidyl ether.

首先用对羟基苯甲醛和环氧氯丙烷反应制备4-(2， 3-环氧丙氧基)苯甲醛，然后通过Wittig反应将醛基转化为乙烯基得到含环氧基团的功能性单体苯乙烯基环氧丙基醚，最后用ATRP方法聚合单体SGE得到含环氧侧基的聚苯乙烯。

Comparisons between the experimental and computational IR spectra clarify the difference of the open- and closed-ring isomers, which indicate that it is possible to identify the tautomeric form of this diarylethene derivative using a highly selective infrared absorption band and the strong absorption at 1 705 cm-1 of the ring-closed isomer can be used in non-destructive readout by IR light.

通过红外吸收光谱表征了该光致变色二芳基乙烯衍生物在溶液中开、关环前后结构的变化，并采用理论化学计算方法研究了该化合物开、关环异构体的红外吸收振动特性。光致变色异构化过程可以通过红外吸收光谱的变化而识别。关环异构体在1 705 cm

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。