二戊烯

The colorless, odorless, good stability hydrogenation piperylene C5 petroleum resin, whose chroma is less than 1 and softening point is 92.6 ℃, can be obtained in this process.

可以制得色度在1以下、软化点为92.6℃的无色、无味、稳定性很好的加氢间戊二烯石油树脂。

The rhythmic hydrogenation reaction of piperylene C5 petroleum resin produced by Fushun Zhengchuan chemical plant was carried out by using the laboratory made catalysts that load of palladium is 1.0%, load of other metals is 1.0%. The best hydroprocessing conditions are:reaction temperature is 270 ℃, reaction pressure is 3.0 MPa, reaction time is 4 h.

采用含钯质量分数1.0%，其他金属质量分数1.0%的自制催化剂对抚顺市正川化工厂生产间戊二烯C5石油树脂，在高压釜中进行间歇加氢，最佳工艺条件为：反应温度270℃，反应压力3.0MPa，反应时间4h。

This paper demonstrates distribution features and geochemical significance of biomarker in Tangyuan Depression and crude oil,and indicates that,abundant n-alkane,isoprenoid-n-alkane,terpenoid and steride are tested in Tangyuan Depression .

主要论述了汤原断陷生物标志化合物及原油生物标志化合物的分布特征及其地球化学意义，指出汤原断陷内检出丰富的正烷烃、类异戊二烯烷烃、萜类化合物及甾类化合物。

The stable carbon isotope s of saturated hydrocarbon and specific compound composition of the oil from the trachyte near the crater are relatively low,and the negative anomalies of the .

通过对欧利坨子原油地球化学特征的研究，发现原油性质的差异同储集层与火山口的相对位置有着密切的关系，在火山口附近的粗面岩储集层中，原油的饱和烃及其单体碳同位素值偏轻，类异戊二烯烃的碳同位素负异常基本消失，原油的CPI和OEP值较低(平均为1·21和1·06)。

The method for preventing the formation of peroxides from cyclopen-tadiene is to seal it With nitrogen.

防止环戊二烯生成过氧化物的方法，可充以氮气长期贮存。

Its emission accounts for half of the hydrocarbons total one, and especially is very high in the rural and well vegetated areas, which greatly influences the regional environment such as ozone concentration.

异戊二烯(C_5H_8)是对流层中重要的NMHC，也是植被释放最多的挥发性有机化合物，其排放量占植物烃类总排放量的一半，特别是在农村和边远地区大气边界层中含量很高，往往对局地大气环境，如臭氧浓度有很大的影响。

Isoprenoids have the advantage that, like alcohols, they are part of the natural biochemistry of many organisms.

类异戊二烯有个跟醇类一样的优势，那便是它们是许多有机体中生物化学成分所含有的。

The cure kinetics of naphthyl/dicyclopentadiene epoxy resin and bis-phenoxy (3-hydroxy) phosphine oxide was investigated by differential scanning calorimetry under nonisothermal and isothermal condition.

用差示扫描量热仪研究了含萘环和二环戊二烯环结构环氧树脂NDEP和BHPPO的等温和非等温固化动力学。

By splicing in genes from other bugs, the company was able to engineer synthetic metabolic pathways—ones that do not exist in nature—that enable the bacteria to produce isoprene from the sugars found in plant materials such as sugar cane, corn cobs and switchgrass, a tall-growing variety native to North America.

Genencor的科学家们通过将大肠杆菌的基因与其它菌类基因接合，则能研发出前所未有的代谢合成途径，使细菌能从植物所含的糖类中制造出异戊二烯，这些含糖植物包括甘蔗、玉米棒和北美特有的变异品种柳枝稷等。

The application of liquid isoprene rubber partly replacing NR by equal weight in bead filler of PC tire was investigated.

研究液体聚异戊二烯橡胶等量部分替代NR在轿车轮胎三角胶中的应用效果。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。