醇酸树脂生产工艺Alkyd Production Training

ResinsNuplexResinsFoshanAlkydProduction&ProcessPreparedandPresentedbyChristopherTanNovember2007ResinsNuplexFoshanCoatingResins•Long-oilalkyd•Medium-oilalkyd•Short-oilalkyd•Saturatedpolyester•Polyesterpolyol•Thermoplasticsacrylic(TPA)•Acrylicpolyol(APO)•Ureaformaldehyde•Melamineformaldehyde(NotmadeinFoshan)SetalSetaluxSetamineResinsINTRODUCTIONTOALKYDRESINResinsAlkydProductionDefinitionofAlkydResins•ThereactedproductofAlcoholsanddi-basicacidsiscalledanEsterOOR-OH+R’-C-OHR’COR+H2O(Alcohol)(CarboxylicAcid)(Ester)Alkydresinsareessentiallyshortbranchespolyesterchains,formedbythereactionofdi-basicsacids(suchasPA,MA)andapolyhydricalcohol(suchasPenta,MEGorGlycerol),inthepresenceofavegetableoilorfattyacid.AlkydresinsarealsoknownasoilmodifiedpolyesterResinsAlkydProductionBillofMaterials•Alkyd=Polyestersmodifiedwithoil/fattyacidsTheRawMaterialsaredividedinto7categories:-1)AlcoholorPolyol2)Acids/Anhydrides3)Oils/Fattyacids4)Othermodifiers5)Anti-Oxidant6)Catalyst7)SolventsResins•Pentaerythritol(Penta)•GlycerineorGlycerol•MonoEthyleneGlycol(EGorMEG)•TrimethylolPropane(TMP)•NeoPentylGlycol(NPG)AlkydProductionTypesofPolyolsResinsNote:MAisveryreactiveascomparedtoPA,therefore,anypresenceofO2wouldturntheAlkyddarkerincolor.•PhthalicAnhydrides•MaleicAnhydrides•IsoPhthalicAnhydrides•TerephthalicAcid•AdipicAcidAlkydProductionAcidsorAnhydridesResinsOtherModifier•GumRosins(ImproveHardness)•Phenolic(improvedrying)•Styrene(improvedrying)Resins•SoyaBeanOil•LinseedOil•CoconutOil•TallOilFattyAcids•PalmOilFattyAcids•SoyaOilFattyAcids•SunflowerFattyAcid•SunflowerOil•CastorOil•etcNote:-OilorFattyacidswhenreactwithrenegadesoxygeninReactorwillgivehigherAlkydcolor.Itisthereforeimportantthattheoxygenmustbeeliminatedfromthereactor.AlkydProductionVegetableOilsorFattyAcidsResins•Litharge(LeadOxideorPbO)–Veryreactive,onlyasmallamountisneeded,unfortunatelyleadisbannedinpaintformulation•LeadNaphthenate(PbNaph)–leadisbannedinpaintformulation•CalciumNaphthenate(CaNaph)–Lowreactivity,needquitealottoreactandgiveresinahazyappearance,butgivelightcolourresins.•LithiumHydroxide(LiOH)–Reactive,cutdownkettletimebuthowever,resinsremainshazyduetothesuspendedsalt.•Fastcat4350(tinbase)–Reactive,dramaticallycutdownkettletime.Resinsisclearatreactor.However,theresinscolourcanbequiteinconsistentandthecatalystisexpensive.•CalciumOctoate/TPPI–Lessreactive,longerkettletimebutcheaperascomparedtoFastcat4350,resinsisclearatreactor.However,TPPIaffecttheresinsdryingtime.•Tagocut–(Tinbase)–AsreactivecomparedtoFastcat4350.Resinisclearatreactor.TinAlkydProductionCatalystsResins•TriphenylPhosphite(TPP)•HypophosphorusAcid(HPA)•PhosphoricAcid(30%)1)TheseAnti-OxidantsreactswithoxygenthatentersthekettleandpreventitfromreactingwiththeAlkyd.2)Economics–Anti-OxidantsareveryexpensivematerialImportantNote:HPAcangeneratePhosphinegasattemperatureevenbelow90oC.Phosphinegashasaverybroadexplosionrangeandanauto-ignitiontemperaturebetween40to90oC.Evenatlowoxygencontent,phosphinegascanigniteAlkydProductionAnti-OxidantsResinsHypophosphorusAcid(HPA)AdditionProcedureResinsAlkydProductionSolventsSolventBoilingPt(oC)FlashPt(oC)•WhiteSpirit150-20052-56•Xylene137-14125•Solvesso100163–18041•Solvesso150183–20760•Toluene108–1127•Colourforallsolventspec.are10APHA•Forotherdetails,seeQClaboratoryRMSpecificationResinsATypicalAlkydProcessingOil+PolyolMono-glycerides+CatalystAddpolycarboxylicacidSolventrefluxAlkyd+WaterEsterificationProcessAlcoholysisProcessResins•1.IDENTIFICATIONOFTHESUBSTANCE/PREPARATIONANDCOMPANY/UNDERTAKING•2.COMPOSITION/INFORMATIONONINGREDIENTS•3.HAZARDSIDENTIFICATION•4.FIRSTAIDMEASURES•5.FIREFIGHTINGMEASURES•6.ACCIDENTALRELEASEMEASURES•7.HANDLINGANDSTORAGE•8.EXPOSURECONTROLS/PERSONALPROTECTION•9.PHYSICALANDCHEMICALPROPERTIES•10.STABILITYANDREACTIVITY•11.TOXICOLOGICALINFORMATION•12.ECOLOGICALINFORMATION•13.DISPOSALCONSIDERATIONS•14.TRANSPORTINFORMATION•15.REGULATORYINFORMATION•16.OTHERINFORMATIONAlkydProductionMaterialSafetyDataResins•OilarenotreadilyabletoreactwiththepolyolandacidscomponentsintheAlkydformulation.Itisbasicallyatriglycerideswhichrequireitgothroughatrans-esterificationstage(Alcoholysis)withthepolyolbeforeitcanreactwiththeacids.•Alcoholysiswillconvertthetri-glyceridesinoilinthepresenceofCatalystintomono-glyceridesCH2–OOCRCH2–OOCRCH2-OOCR240oCCH–OOCR+2CH–OH3CH–OHCatalystCH2–OOCRCH2–OHCH2-OHTri-GlyceridespolyolMono-GlyceidesAlcoholysisreactionsrequirestemperatureof240oCandthereactionisspeedupbytheuseofCatalyst.Theprocessiscarriedoutinthereactorunderaslightpositiveinertgaspressure(Nitrogen)topreventingressofairtopreventproductdiscoloration.AlkydProductionAlcoholysisResinsAlkydProductionAlcoholysisCompletionTest•Sincethetransformationoftriglycerideintomono-glycerideissoimportant,testsaretobecarriedouttoensurethatthealcoholysisreactioniscompletedduringtheprocess.–ESTest(EthanolSolubilityTest)–PATest(PhathalicAnhydrideTest)ResinsAlkydProductionIn-completeAcoholysis•Incompletealcohoysiswillresultintheformationofinsolubleesters,onadditionofthedi-basicacid(suchasPAorMA)duringthe