查询词典 styrene

Firstly, polyacrylamide with 26 million molecular weight was compounded in lab through establishing optimum compounding initiator proportionality of 1:1. 3 and mass concentration of 170 mgL^(-1), temperature of 10 ℃, acrylamide mass percentage of 25%, electrical conductivity of 3.6 μSm^(-1) and pH value of 6.57. The salt-resistance, thermal endurance and shear-resistance of polyacrylamide could be enhanced b introducing sulfonic acid group or styrene sulfonate group or drawing the two groups above at the same time. Secondly, chelator HEDP, bactericide isoquinoline ketone and oxygen scavenger thiourea were optimized to improve the compatibility of polyacrylamide and formation water.

在由室内试验确定了复合引发剂最佳比值1：1.3和质量浓度170 mgL^(-1)、合成最佳温度10℃、丙烯酰胺单体质量分数25%、电导率3.6μSm^(-1)和pH值6.57后，合成出相对分子质量高于2.6×10^7的聚丙烯酰胺，同时通过丙烯酰胺单体复配引入磺酸基团、苯乙烯磺酸基团或同时引入此两种基团，提高了聚合物的抗盐、抗温、抗剪切性能；后针对聚丙烯酰胺与地层水配伍性差的问题，优选出HEDP螯合剂、异噻唑烷酮杀菌剂和除氧剂硫脲，对聚合物稳定效果明显。

Two kinds of cross-linked polyacrylate latices with relatively narrow distribution of particle diameters, which are abbreviated to P and P/P, were synthesized by seeded emulsion co-polymerization, respectively. Butyl acrylate and 2-ethylhexy! acrylate were used as comonomers of ACR core, styrene and methyl methacrylate were employed as comonomers of ACR shell, and 1,4-butanediol diacrylate was used as cross-linking agent.

采用丙烯酸丁酯和丙烯酸2-乙基己酯(2-EHA)为核层单体、苯乙烯和甲基丙烯酸甲酯为壳层单体、1，4-丁二醇二丙烯酸酯为交联剂，通过多步种子乳液聚合方法合成了P、P／P两种具有窄粒径分布的共聚丙烯酸酯胶乳。

Thermoset acrylic coating are based on resins prepared from acrylic and methacrylic esters, acrylic and methacrylic acids, and /or styrene.

热固型丙烯酸涂料是由丙烯酸和甲乙基丙烯酸酯，丙烯酸和甲基丙烯酸，或苯乙烯反应而成。

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。

Synthesized ethylene - laborious Xi copolymer and methylic acrylic acid armour ester - propylene nitrile - the graft copolymer of styrene .

梗概： 合成了乙烯-辛烯共聚物和甲基丙烯酸甲酯-丙烯腈-苯乙烯的接枝共聚物。

Main product has: SBR of butadiene styrene rubber - 1500, SBR - 1502, SBR - 1712, butadiene rubber BR - 9000, BR - 9073 with 6 ＃ solvent naphtha, 120 ＃ industrial aether of butyl of solvent naphtha, methylic father's younger brother, 1 - Ding Xi.

主要产品有：丁苯橡胶 SBR－ 1500、 SBR－ 1502、 SBR－ 1712，顺丁橡胶 BR－ 9000、 BR－ 9073和 6＃溶剂油、 120＃工业用溶剂油、甲基叔丁基醚、 1－丁烯。

The present invention provides a multinuclear half metallocene compound in which two or more of transition metals of groups 3 to 10 on periodic table are connected through bridge ligand simultaneously containing Pi-ligand cycloalkandienyl group and Alpha-ligand functional group and its preparation, and a process for preparing styrene polymer using the compound as a catalyst.

本发明提供了一种其中的两个或更多元素周期表第3-10族过渡金属通过同时包含π-配体环烷基二烯基团和α-配体功能基团的桥配体连接的多核半金属茂络合化合物及其制备方法，及使用本化合物为催化剂的苯乙烯聚合体的制备工艺。

N,N '- ditertbutyl nitroxyl radical, 2, 2,6,6- tetramethyl-4 - hydroxyl piperdinehy droxylamine and its nitroxyl radical, as inhibitors of the BPO- initiated copolymerization of styrene (M 1 ) with acrylonitrile (M2 ), at 60℃,has been studied.

研究了二叔丁基羟胺，二叔丁基氮氧自由基，2，2，6，6－四甲基－4－羟基哌啶羟胺和2，2，6，6－四甲基－4－羟基哌啶－1－氧自由基对过氧化苯甲酰60℃引发的苯乙烯（M1）－丙烯腈（M2）共聚合的阻聚行为。

A dynamic generating toxic gas system and a nose-only exposure system were used for the pharmacokinetic study of inhaled environmental contaminants for benzene, toluene, xylene, ethylbenzene,chlorobenzene, styrene, isopropyl benzene, tetrachloroethylene, nonane and methylcyclohexane in male guinea pig.

用动态配气设备和鼻式吸入方式染毒，采用雄性豚鼠对环境中10种挥发性污染物(苯、甲苯、对二甲苯、乙基苯、氯代苯、苯乙烯、异丙苯、四氯乙烯、甲基环己烷和壬烷混合物)的吸入动力学进行了研究。

The test result showed that the pour point of Jianghan crude oil might depress from 28 ℃ to 13 ℃ when styrene∶maleic anhydride∶octadecyl acrylater was 1∶3∶3, preheated temperature of the crude oil was 60 ℃, and addition of the terpolymer was 300 mg/L.

研究表明，当苯乙烯、马来酸酐、丙烯酸十八烷基酯三种单体摩尔比为1∶3∶3，原油预热温度为60 ℃，三元共聚物在江汉原油中加量为300 mg/L时，此三元共聚物可使江汉原油的凝固点从28 ℃降到13 ℃。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。