Cis , cis-1, 4-dibromo-1,2 , 3,4-tetraphenyl-1,3-butadiene is obtained from the reaction of 1 , 4-dilitho-l, 2,3, 4-tctraphenyl-l , 3-buladicnc with carbon tetrabro-mide.

It also makes suggestions on the problems of butadiene nitrile rubber after China entered WTO.

并针对入世后国内丁腈橡胶行业存在的不足提出了几点建议.

The application of wet ground sericite to natural rubber and styrene-butadiene rubber was described.

介绍了湿磨绢云母粉在天然橡胶和 丁苯橡胶 中的应用试验,结果表明,湿磨绢云母粉具有补强性能.

Determination of residual styrene monomer in polystyrene and acrylonitrile-butadiene-styrene resins by gas chromatography.

聚苯乙烯和丙烯腈 - 丁二烯 - 苯乙烯树脂中残留苯乙烯单体的测定气相色谱法.

Nitrile is a copolymer of butadiene and acrylonitrile.

丁钠橡胶是丁二烯和丙烯腈的共聚物.

Sealing Material : O-shape or U-shape seal ring; butadiene acrylonitrile rubber, fluorine rubber.

密封材料: O形或U形密封圈; 丁晴橡胶 、 氟橡胶.

Nickel fastens butadiene rubber product to already achieved international banner level.

镍系顺丁橡胶产品已达到国际领先水平.

A synthetic rubber made from the polymerization of butadiene sodium.

丁二烯的衍生物,用于聚合制成氯丁橡胶.

A flammable gaseous fraction of petroleum, consisting chiefly of butane.

粗丁''.'烷'.''石油中易燃的气体部分, 主要由丁''.'烷'. ''组成.

KX 50 butane flow proportional counter is described and its plateau characteristic is determined.

实验证明用丁烷作为流气式正比计数管的工作气体是可行的.

The polyhedral flame has been observed clearly when butane burns in some laminar, conditions.

在一定条件下,层流预混气体燃烧过程中可清晰地观察到多棱火焰现象.

Butane is found into both oil and natural gas.

丁烷气体是从石油和天然气中找到的.

A mathematical model was established for catalytic dehydrogenation of butane in plug flow membrane reactor.

建立了模拟真实实验室膜反应器的数学模型:活塞流数学模型.

The polyhedral flame has been observed when butane burns in some laminar conditions.

在丁烷层流预混气体的燃烧过程中清晰地观察到多棱火焰现象.

Other are less common, can include ethane, propane, butane and light and heavy naphtha.

其它不常用的原材料包括乙烷 、 丙烷 、 丁烷以及轻、重石脑油.

The butane conversion of catalyst aged in different pH has similar value.

在不同pH值老化的催化剂先驱体,经活化后对丁烷的转化率基本相同.

The main component in 4 # solvent is liquefied butane.

四 号 溶剂主要成分为液化丁烷.

Synthesis of n-butyl chloro acetateacid and n-butanol in the presence of stannic chloride pentahydrate was studied.

在五水四氯化锡存在下,由氯乙酸和正丁醇合成氯乙酸正丁酯.

The mechanism of dehydrogenation of secondary butanol and the catalyst characteristics and regeneration steps were introduced.

简单地介绍了仲丁醇脱氢反应的机理、催化剂的特点和催化剂的再生步骤.

Tri-butyl citrate was synthesized from citric acid and butanol catalyzed by acidic bentonite.

以柠檬酸和正丁醇为原料,在自制酸性膨润土催化下合成了柠檬酸三丁酯.

The added n-butanol facilitates the formation of F 127 micelles and makes the CMT of F 127 solutions decrease.

正丁醇的加入有利于F127单体分子聚集形成胶束,使得F127溶液的CMT降低.