简介：Thediblockcopolymersintercalatedlayeredsilicatewaspreparedviaameltdispersiontechnique.Thentheeffectofintercalatedhybridasfilleronacrylonitrile-butadiene-styreneresinwascharacterizedbyX-raydiffraction,transmissionelectronmicroscopy,stress-strainmeasurementsinelongation.

简介：PositronannihilationtechniquewasusedtostudythemicellebehaviorsoftwoSBStriblockcopolymersinMEKsolventatdifferenttemperatures.Annihilationlifetimeτ3ofortho-positronium（o-Ps）exhibitedanobvioustransitionfromshorterlifetimetolongerlifetimewithtemperature.ItwasattributedtothechangeofmicellebehaviorofSBScopolymermoleculesinthesolution.Experimentalresultsofsedimentationvelocityofultracentrifugewerealsoreported.

简介：Styreneisextensivelyusedinindustry,butitsototoxicity,inparticularinthepregnantfemaleandtheoffspring,isstillnotwellunderstood.Inthecurrentstudy,youngadultmaleratsandpregnantfemaleratswereexposedtostyrenebygavageatdifferentdoses.Theyoungadultmaleratsreceivedatotalof12g/kgstyrenewithindifferentperiods(800mg/kg/dayfor5days/weekfor3weeks,400mg/kg/dayfor5days/weekfor6weeks,200mg/kg/dayfor5days/weekfor12weeks,and100mg/kg/dayfor5days/weekfor24weeks)andthepregnantfemaleratsreceivedstyreneatadoseof400mg/kg/dayfor5days/weekfor6weeksstartingfromthegestationday-4.Hearinglossandhaircelllosswereassessed5daysafterthestyrenetreatmentintheyoungadultmaleratsandinthemotherrats.Thecochlearimpairmentsintheratpupswereexamined2monthsaftertheirbirth.Thestyreneexposurecausedhearinglossandhaircelllossstartingfromthemid-frequencyregioninthethirdrowofouterhaircells(OHCs)andtheimpairmentsappearedtoberelatedtothedosinglevelineachsingleday.Significantly,thestyreneexposuretothepregnantratsinterferedwithauditoryfunctionaldevelopmentoftheirfetus,leadingtoadeficitofcochlearamplification,althoughtheOHCsappearedtodevelopwell.Theresultsindicatethatashort-termhigh-levelstyreneexposuremaybemoreototoxicthanalong-termlow-levelexposureforasimilartotalstyrenedoseandthestyreneinthepregnantwoman'sbodymayinterferewithauditorydevelopmentoftheirfetus.

简介：在这份报纸，从60的温度的效果??肠？？

简介：Thecharacteristicsofstyrene-acrylicacidcopolymersupportedlanthanidecomplexes(SAACLn)(Ln=La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tin,Yb,andLu)weredescribed.AcomparisonoftheactivitiesofSAAC·Lnwasmade.Itwasfoundthatinthepolymerizationofbutadiene,apeakinactivityappearedatNdandPr,Sin,Euandtheheavylanthanidesexhibitedlowornoactivities.Theeffectsofsomefactorsontheactivitieswerediscussed.Themicrostructureofthepolymersobtainedwithallthelanthanidesintheserieswerethesameandthecontentofcis-1,4polybutadieneattainedwasmorethan98%.

简介：100kt/a丁二烯单位的构造在3月20,2007日在南京在西诺佩西昂齐·布朗奇公司被发动。这个工程的主要承包商是theYangzi石油化学的工程公司，和工程设计被设计Co.and的SINOPECShanghai联合执行Yangzi石油化学的Design&Engineering公司。SINOPECNo.5ConstructionCo.will肩膀为土木工程，建设和安装的责任。

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简介：TheexistingbutadieneunitatYangziPetrochemicalCom-panywasoriginallyratedbydesignat53kt/a.Afterwardsthiscompanyhasexpandeditsethyleneproductioncapac-ityfrom300kt/ato650kt/a,resultingindoublingofthe

简介：Ethyl-cyanoethylcellulose((E-CE)C)/styrenesolutioncouldformanisotropicsystemwhentheconcentrationwashighenough.The(E-CE)C/polystyrene(PS)multiphasepolymercouldbeobtainedbyradicalpolymerizationofthestyreneinthesolution.The(E-CE)C/PSmultiphasepolymermaintainedboththecrystallinestructureofthe(E-CE)CandtheamorphousstructureofthePS.Inthemultiphasepolymerproducedfromtheisotropicsolution,however,the(E-CE)CformedspherulitesandspreadinthePSamorphousphase.While,inthemultiphasepolymerproducedfromtheanisotropicsolution,the(E-CE)formedcylindericcrystallineaggregates.Moreover,theorderedlamellartexturewasalsoobservedinthemultiphasepolymerproducedfromtheanisotropicsolution.

简介：Externalmagneticfieldincreasesthephoto-inducedpolymerizationrateofstyrenemicroemulsion.Thetypeofphotoinitiatorplaysanimportantrole.Thephotoinitiators,usedaredimethoxyphenylacetophenone(DMPA),1-hydroxycyclohexylphenylketone(Irgacure184)anddimethylhydroxyacetophenone(Darocur1173).Nomagneticeffectwasobservedbyusingdibenzylketone(DBK)asphotoinitiator.Themolecularweightofthepolymerisslightlyaffectedbymagneticfield.Theinfluenceoftemperaturehasalsobeeninvestigated.

简介：Thefirstdomesticstyreneextractionunit,a30kt/aunitforextractionofstyrenefrompyrolysisgasoline(pyro-gas),intheconstructionofwhichtheGuangdongNewHua’aoPetrochemicalCompany,arestructuredenterpriseaffiliatedtotheMaomingPetrochemicalCompany,hasinvested160millionRMB,hasbeencontinuouslyandsafelyoperatingfor430dayssinceMay2011.

简介：Thenew-generationcatalystSANC-11forsynthesisofacrylonitriledevelopedbySINOPEC’sShanghaiPetrochemicalResearchInstitutehasbeenappliedinthecommercial-scalecommissioningofthe1000AreactoroftheShanghaiPetrochemicalCompany,whenthereactorof

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简介：Polymerboundpalladium(Pd)complexcatalystswithgraftingacrylonitrileoninorganiccompound(MgO,Y-molecularsieveandSiO2)bypre-radiationmethodwerestudies.Thepalladium-graftingpolymershavebeeninvestigatedbyX-rayphotoelectronspectrscopy(XPS).ItisindicatedthatpeakwidthofC1sandO1sspectraofMgO-g-PAN-Pd(radiation-inducedgraft)iswiderthanthatofMgO-PAN-Pd(chemicalmethod)andPeaknumbersofformerareonemorethanlater.Accordingtothereportinreference,thispeakisattributedto-O-Cgroup.Thus,thegraftacrylonitrileonMgOmaycompletethroughoxygenatomsimMgOandβ-carbonatomsinacrylonitrile.Thepolymercatalystobtainedbyradiationgraftingisahigheractivehydrogenationcatalystforolefinesandbetterantioxicthanthatofoneobtainedbychemicalmethod,andithasselectivityforhydrogenationcatalyst.

简介：TheWisonEngineering(China)Company,Ltd.hasannouncedthatithassuccessfullydevelopedanewtechnologyformanufacturingbutadienethroughoxidativedehy-drogenationofbutylenefollowingthecompletionofPDPfora75kt/a

简介：Polymerizationofacrylonitrile(AN)inaqueousnitricacidinitiatedbypolypropylene-basedpolyamidoxime(PPAO)-thiourea(TU)combinationhasbeeninvestigated.Theoverallrateofpolymerization(R_p)undertheconditionsof[TU]/[PPAO]<0.5molarratioisThemolecularweightsofthepolymerswerefoundtobeinverselyproportionalto3/2-powerofnitricacidconcentrationand1-powerofthioureaconcentration.Inaddition,itisindependentwiththeconcentrationsofmonomerandPPAO,anddecreaseswithincreasingtemperature.Onthebasisoftheseexperimentalresults,acoordination-protontransfermechanismfortheinitiationwasproposedanddiscussed.

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