丁二烯

The major products were methane, ethylene, propylene, butylene, butadiene, cyclopentadiene, benzene, toluene, styrene, vinyl-substituted cyclopentene derivatives and C5/C6 isomers (pentadiene, methyl-substituted cyclopentene derivatives, cyclohexene, hexadiene and methyl-substituted cyclopentadiene derivatives), and the main primary products were determined to be C1～C4 compounds, cyclopentadiene, benzene, toluene and vinyl-substituted cyclopentene derivatives.

热裂解主要产物为甲烷、乙烯、丙烯、丁烯、丁二烯、环戊二烯、苯、甲苯、苯乙烯、环戊烯的乙烯基取代物及C5， C6异构体(戊二烯、环戊烯的甲基取代物、环己烯、己二烯和环戊二烯甲基取代物)，其中， C1～C4、环戊二烯、苯、甲苯、乙烯基取代环戊烯为初始产物。

The major products were methane, ethylene, propylene, butylene, butadiene, cyclopentadiene, benzene, toluene, styrene, vinyl-substituted cyclopentene derivatives and C5/C6 isomers pentadiene, met...

热裂解主要产物为甲烷、乙烯、丙烯、丁烯、丁二烯、环戊二烯、苯、甲苯、苯乙烯、环戊烯的乙烯基取代物及C5，C6异构体(戊二烯、环戊烯的甲基取代物、环己烯、己二烯和环戊二烯甲基取代物)，其中，C1～C4、环戊二烯、苯、甲苯、乙烯基取代环戊烯为初始产物。

Three series of segmented polyurethanes were synthesized, which are based on 4,4'-methylene-di, N-methyl diethanolamine and hydroxy terminated poly-butadiene, poly or poly.

本文讨论了以聚环氧乙烷、聚环氧丙烷以及聚丁二烯为软段，以4，4'-二异氰酸二苯甲烷和N，N-二羟乙基甲胺为硬段的链段型聚氨酯的合成。

In this thesis, the polymerization of triblock copolymer of styrene-butadiene-methyl methacrylate was carried out in glass flask ,with n-BuLi as initiator, 1,1-diphenylethylene as capping agent and Lithium 2(2-methoxyethoxy) ethoxide as additive.

本论文以n-BuLi为引发剂、1，1-二苯基乙烯为戴帽剂、2-(2-甲氧基乙氧基)乙氧基锂为添加剂，对玻璃聚合瓶中非极性-极性三嵌段共聚物聚苯乙烯—聚丁二烯—聚甲基丙烯酸甲酯的合成进行了研究。

This article reports a new kind of copolymer, non polar polar terpolymer : poly(styrene-butadiene-methyl methacrylate ) P(S-b-B-b-MMA prepared by anionic polymerization with n BuLi as initiator, 1,1 diphenylethylene as capping agent and lithium 2-(-methoxyethoxy) ethoxide as complex agent.

以正丁基锂为引发剂， 1 ，1-二苯基乙烯为戴帽剂， 2-(2-甲氧基乙氧基)乙氧基锂为络合剂，在环己烷、四氢呋喃混合溶剂中，采用阴离子聚合法，于－70℃～－40℃合成了非极性-极性的三嵌段共聚物聚苯乙烯-聚丁二烯-聚甲基丙烯酸甲酯，并借用GPC、1H-NMR、DSC、TEM、IR等仪器对共聚物进行了表征。

In some areas, the risk levels of carbon trichloride, hexachlorobutadiene, carbon tetrachloride, chlorylene, tetracarp, trichloroethane , chloroform, gammexane and other pollutants all exceed 10-4, all above the harm value of 1, and these pollutants are likely to cause risks to human health.

而少数区域的六氯乙烷、六氯丁二烯、四氯化碳、三氯乙烯、四氯乙烯、1，1，2-三氯乙烷、氯仿和六六六等污染物风险等级均大于10-4，危害商均大于1，这些污染物均能对人体健康产生风险。

Organic chlorine compounds, including hexachlorethane , pentalin , hexachlorobutadiene, HCB, pentachlorobenzene, dioxin, gammexane, tetracarp, carbon tetrachloride , chloroform and etc.

有机氯化合物，包括六氯乙烷、五氯乙烷、六氯丁二烯、六氯苯、五氯苯、二恶英、六六六、四氯乙烯、四氯化碳和氯仿等污染物。

Have unit of 6 main production; Produce per year device of device of 130 Kt butadiene styrene rubber, 38 Kt butadiene rubber, 56 Kt and device of extraction of 53 Kt butadiene each one, device of aether of butyl of 40 Kt methylic father's younger brother, 15 Kt 1 - butene device.

现有 6套主要生产装置；年产 130 kt丁苯橡胶装置、 38 kt顺丁橡胶装置、 56 kt和 53 kt丁二烯抽提装置各一套、 40 kt甲基叔丁基醚装置、 15 kt 1－丁烯装置。

Effects of the pretreatment of catalysis, reaction temperature, the ratio of the reactants, the substrate-catalyst ratio and the content of the promoter on the reaction properties of NaK catalysts has been studied in a wide range.

本实验用超声波技术激活金属钾钠合金低共熔物催化剂，考察了催化剂预处理，反应温度，原料配比，催化剂用量以及加入助剂用量等因素对钾钠液态低共熔物催化剂上邻二甲苯与1，3-丁二烯合成OTP反应转化率的影响。

The influence of aromatic oil and naphthenic oil on the properties of oil-extended iron catalyzed 1,2-polybutadiene rubber was researched.

研究了芳烃油和环烷烃油对充油铁系1，2-聚丁二烯橡胶性能的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

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。