简介：我们在场这里周期的oligo(乙烯adipate)的第一合成经由有乙烯乙二醇的adipoyl氯化物的伪高度冲淡冷凝作用反应的s(COEA)，和合成相应poly(乙烯adipate)(豌豆)经由COEA的melt聚合。COEA的结构被1H-NMR和MALDI-TOF团大小。器官的底，反应温度和到COEA的收益上的乙烯乙二醇的adipoyl氯化物的比率的效果被学习，并且最佳反应条件被揭示。豌豆，二酸和diol基于半水晶的绿脂肪族的聚酯，被COEA的melt聚合用Ti综合(n-C4H9O)是的4是的催化剂和1,10-decanediol在200点的开始者在上到葡萄牙的语言的BPI在巴西说瞄准它的以后的用法在癌症病人生活测量疼痛的紧张和干扰。方法：BPI-B从原来的位／英寸被开发，用背翻译和委员会评论。背Translatio？

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简介：Factorsaffectingfoulingofdepentanizerinethyleneunitswereexploredthroughstudyofthecompositionofpyrolysisgasoline,C5distillateandfoulingdepositsfromthedepentanizerwhiletakingintoconsiderationtheprocessingparameters.Avarietyofantifoulingmeasures,inparticulartheinjec-tionofaspecialanti-foulingagentintotheCsgasphasepipelineandtheC5distillaterefluxpipelinewereintroduced.Commercialevaluationtestofamultifunctionalanti-foulingagent,theRIPP-1404anti-foulingagent,wasalsodescribed.

简介：OnApril20,2009thecontractonfabricationofanEOreactorincludedintheprojectforrevampoftheEOreactionsystematSINOPECYangziPetrochemicalCompanywas

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简介：Thecrystallinityofethylene-butenecopolymerspreparedbycopolymerizationofethyleneandbuteneinthepresenceofanewhighlyactivecatalystwasstudiedbymeansofDSC,WAXDandDMA.Theresultsshowthatthemeltingtemperature,thecrystallinityandthecrystallitesizedecreasedwithincreasingthecontentofbuteneinthecopolymers.Thecopolymershaveahighdegreeofbranching,thebutenesegmentsaremainlyintheamorphousregionsofthecopolymers,whilethepolyethylenesequenceformscrystalphaseactingascrosslinkingbondagebetweenthemoleculesatroomtemperature.Theethylene-butenecopolymershavealowmodulus,alowstressandahighstrainanalogoustothestress-strainbehaviorofnon-crossthermoplasticelastomer.

简介：有一双chelatingaminotropone的Ti建筑群的合成和结构[在上]ligand被报导了。功能的理论(DFT)学习的密度的计算建议当与methylaluminoxane(毛)激活时，二度(aminotropone)Ti建筑群为olefinic单体的聚合有高潜力。这些理论研究也证明活跃种类通常从二度(aminotropone)导出Ti催化剂与用二度(phenoxyimine)生产的那些相比拥有更高的electrophilicity自然作为高效石蜡聚合催化剂被知道的Ti建筑群(TiFI催化剂)。二度(aminotropone)Ti催化剂产生比TiFI有更高的electrophilicity的催化地活跃的种催化剂。

简介：ThereactionofsingletoxygenwithethylenehasbeenstudiedattheabinitiolevelwithbothHF/3-21GandHF/6-31Gbasissets,fullyoptimizingthegeometriesofthecriticalpoints.Thetransitionstateleadingtotheintermediateperoxiranefromtheinitialreactantsisfound,Iocatedat81.71kJ/molabovethedissociationlimit.Thevibrationalanalysisisdonewithtwobasissets.Fromtheresultsitcanbeseenthatthefrequencieshavenotbeenmadeanimprovementobviouslywithaugmented6-31Gcomparedto3-21Gbasis;itfollowsthatmainreasonfortoohighHF/3-21Gfrequencycouldmainlybethevibrationalanharmonicity.TheeigenvectorcorrespondingtothesingleimaginaryvibrationalfrequencyisdominatedbythelargerO-Odistance.Thefindingofthetransitionstateconfirmsthattheperoxiraneminimumcanbereachablepassingthroughaperoxirane-likesaddlepoint.Inaddition,themechanismsofthereactionformingoxiranearediscussedaswell.

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简介：Well-defineddiblockcopolymersofstyrene(St)andethyleneoxide(EO)havebeenpreparedbysequentiallivinganionicpolymerizationofthetwocomonomersinTHF.Diphenylmethylpotassumhasbeenusedasinitiator.Theblockcopolymerswerecharacterizedindetailbymethodsofsizeexclusionchromatography(SEC),^1H-NMR,FT-IR,dynamicmechanicalanalysis(DMA)andWAXD.

简介：The650kt/aethylenerevampprojectatSINOPECYangziPetrochemicalCompanyafteritstrialcommissioningformorethantwoyearshaspassedtheacceptancetestorganizedbySINOPEC.

简介：在SINOPEC武汉石油化学的植物的0.8Mt/a乙烯工程被国家发展改革委员会(SDRP)在4月3,2007日同意了。在这个工程的建设的结束以后，武汉将在华中成为第一个大综合refining/chemicalproduction底。

简介：TheYangziPetrochemicalCompany(YPC),afterhavingbeenutilizingtheLPGraffinatefromthearomaticsunitandpropanefromtherefineryasthepyrolysisfeedstocks,hadsuccessfullydeliveredtailgasinthelate2009totheethylene

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简介：Theinfluenceofoperatingparametersandtypeofzeolitecatalystsonformationofethyleneandpropyleneduringcatalyticpyrolysisofmethylcyclohexane(MCH)wasstudiedinalaboratoryfixedfluidizedbedreactor.TheresultsindicatedthathigherreactiontemperatureandlowerWHSVtendedtoproducemoreethyleneandpropylene,amongwhichthereactiontemperaturewasanimportantfactorinfluencingtheethyleneformation.ComparedwiththeFAUandBEAtypezeolites,theMFIstructuredzeolitecatalyst,thankstomoreacidsitesandsmallerporediameterofthecatalyst,wasconducivetotheformationofethyleneandpropylene.TheprotonationoccurredondifferentC—CbondsandC—HbondsinthecarbonchainofMCHledtodifferentproductslates,andtheprotonationonC—Cbondslocatedatnaphthenicringwasfavorabletotheformationofethyleneandpropylene.

简介：阶段PVDF水晶结构和在先存在的阶段PVDF球粒以内的豌豆的结晶化上的豌豆的效果被光显微镜学OM，红外线的光谱学红外和扫描电子显微镜学SEM调查了。结果证明阶段PVDF球粒由展出高度弄弯的像滚动的形态学的lamellae组成并且在充满豌豆的混合优先地发展。与增加豌豆集中，滚动直径增加和滚动更好与对方被分开。豌豆在interspherulitic区域使第一结晶，transcrystalline层发展。随后，豌豆的transcrystalline层继续在阶段PVDF球粒以内成长，例如在在滚动之间的区域，直到在另外的豌豆transcrystalline层或球粒上侵犯。结晶化动力学结果显示在阶段PVDF的intraspherulitic区域的豌豆晶体的生长率与阶段PVDF的结晶化温度与豌豆，而是否定豌豆的内容显示出积极关联。