陶氏分散剂一览

TAMOL™DispersantsProductSolutionsGuideDowCoatingMaterialsTAMOL™SaltSolidsUseLevel(onpigment)BenefitsPolyacidDispersants945Na45%0.3-1.0%Excellentcost/performancebalance.Excellentcoloracceptancewithhighreproducibility.Lowodor.Low-foamgenerator.1254Na35%0.3-1.0%Broadformulatinglatitudeandcost/performancebalance.Low-foam.Goodcoloracceptanceandstabilitywithactivepigments.851Na30%0.6-1.0%Highefficiencywithlow-foamgeneration.ExcellentstabilityinpaintscontainingZnOandotherreactivepigments.901NH430%0.6-1.0%Low-foamgenerator.Excellentstability.AmmoniaversionofTAMOL™851Dispersant.963NH435%0.3-1.0%Low-cost,low-foamgenerator.Goodwaterresistance.HydrophilicCopolymerDispersants1124NH450%0.5-1.0%High-glosspotential.Broadformulatinglatitude.Cost/performancebalance.Low-foamgenerator.SG-1NH435%0.7-1.0%High-glosspotential.Broadformulatinglatitude.Cost/performancebalance.Low-foamgenerator.HydrophobicCopolymerDispersants165ANH421%0.6-1.0%Excellentearlyblisterresistanceandwetadhesion.Goodcoloracceptance.Goodglossdevelopmentandcorrosionresistance.731ANa25%0.7-1.0%Excellentoverallcompatibility.Goodpigmentwetting.Highlyefficientperformance.681NH435%1.0%-5.0%Maximizesglosspotential.GoodstabilityinpaintscontainingZnOandotherreactivepigments.Goodcorrosionresistance.2011K23%1.0%-5.0%Low-odor,solventfree*capability.Maximizesglosspotential.GoodstabilitywithZnO.Goodcorrosionresistance.2002n/a42%1.0%-5.0%LowpHtoallowforneutralizerchoice.Low-odor,solvent-free*capability.Maximizesglosspotential.GoodstabilitywithZnO.Goodcorrosionresistance.®™TrademarkofTheDowChemicalCompany(“Dow”)oranaffiliatedcompanyofDow©2013TheDowChemicalCompanyNotice:NofreedomfrominfringementofanypatentownedbyDoworothersistobeinferred.Becauseuseconditionsandapplicablelawsmaydifferfromonelocationtoanotherandmaychangewithtime,theCustomerisresponsiblefordeterminingwhetherproductsandtheinformationinthisdocumentareappropriatefortheCustomer’suseandforensuringthattheCustomer’sworkplaceanddisposalpracticesareincompliancewithapplicablelawsandothergovernmentalenactments.Theproductshowninthisliteraturemaynotbeavailableforsaleand/oravailableinallgeographieswhereDowisrepresented.Theclaimsmademaynothavebeenapprovedforuseinallcountries.Dowassumesnoobligationorliabilityfortheinformationinthisdocument.Referencesto“Dow”orthe“Company”meantheDowlegalentitysellingtheproductstoCustomerunlessotherwiseexpresslynoted.NOWARRANTIESAREGIVEN;ALLIMPLIEDWARRANTIESOFMERCHANTABILITYORFITNESSFORAPARTICULARPURPOSEAREEXPRESSLYEXCLUDED.TAMOL™Solids**AcidHomopolymers1254/9450.3%-0.75%8510.6%-1.0%HydrophilicCopolymers11240.5%-1.0%HydrophobicCopolymers2011,681,20021.0%-5.0%731A/165A0.75%-1.5%DispersantLevelGuidelines**WithTiO2slurries,subtract0.2%to0.5%*Manufacturedwithoutaddedsolvent.Formoreinformation,contactDowCoatingMaterialsUSTollFree800-447-4369dow.com/coatingmaterialsFormNo.884-00336-1013-NAR-EN-GS3305_DCM_WCS_TamolBrochure.indd1-215/10/201310:48pg2pg3PolymericDispersantsThemostprevalentdispersantmoleculesusedarepolymericdispersants.Therearetwocategoriesofpolymericdispersant:polyacidhomopolymerandpolyacidcopolymertypes.Thepolyacidcopolymercategorycanbefurtherbrokenintotwosub-categories:hydrophilicandhydrophobiccopolymers.Thecategoryofdispersantchosendependsonefficiency,rheologymodifiercompatibility,ZnOcompatibility,andotherfilmperformancecriteriaexpectedforaparticularformulation.Polymericdispersantmoleculestendtobelowerinmolecularweight,rangingfrom1,000to20,000daltons.GettingMoreFromYourPaintThegoalofthedispersionphaseinthepaintmakingprocessistomechanicallyseparatepigmentparticlesbyhigh-shearandstabilizethesepigmentparticlesforoptimumperformance.Properlydispersingandstabilizingpigmentparticleswillhelpimprovethelightscatteringforbetterhideandatighter,moredurablecoating.Ifnotproperlystabilized,thepigmentparticlesindispersionwillre-agglomerateovertimeandthusprovidelowergloss,poorhidingandreduceddurability.Dispersantmoleculesplayanactiveroleinthisphase.Theroleofadispersantmoleculeistopreventre-agglomerationofdispersedpigmentparticlesovertime;thisiskeytodevelopingahigh-performance,durablecoatingforanysurfaceyouwanttoprotect.As-suppliedpigmentisagglomerated.Grindingreducesagglomeration.GrindingPolyacidHomopolymerDispersantsPolyacidhomopolymersaremadebypolymerizingacrylic,methacrylic,crotonic,ormaleicacidstogether.Thesehomopolymersaresuppliedintheneutralizedformusingeitherammoniumoralkalimetalsalts.Polyaciddispersantsarethemostefficientandcosteffectiveofthepolymericdispersantcategories,butnotalwaysthebestchoiceforfacilitatingoverallpaintperformance.PolyacidhomopolymerdispersantsarebestpairedwithASE,HASE,andcelluloseetherrheologymodifiers.PolyacidCopolymerDispersantsPolyacidcopolymersareacombinationofhydrophilicorhydrophobiccomonomers.Thesecopolymerdispersantsaretypicallysuppliedintheneutralizedformusingeitherammoniumoralkalimetalsalts.Whatthesepolymericdispersantslackinefficiency,theymakeupforbyenhancingoverallfilmproperties.PolyacidhydrophiliccopolymersarerecommendedwiththeuseofHASE/HEURrheologymodifierpackages