Designation:D7805−13StandardTerminologyforPrintingInkVehiclesandRelatedMaterials1ThisstandardisissuedunderthefixeddesignationD7805;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisstandardcontainsthedefinitionsoftermsasusedinreferencetoprintinginkvehiclesandrelatedmaterials.2.ReferencedDocuments2.1ASTMStandards:2D2369TestMethodforVolatileContentofCoatingsD4713TestMethodsforNonvolatileContentofHeatsetandLiquidPrintingInkSystemsD6419TestMethodforVolatileContentofSheet-FedandColdsetWebOffsetPrintingInks3.SignificanceandUse3.1Acommonsetofdefinitionsisessentialtoimprovecommunicationandavoidmisunderstandingamongmanufac-turersofprintingink,printinginkvehicles,resins,solvents,oilsandallothercomponentsofprintinginkvehicles.4.Terminologyacidnumber(value),n—anindicationoftherelativeamountof–COOHfunctionalityofapolymerorothermolecule.DISCUSSION—Acidnumbercalculatedbythenumberofmilligramsofpotassiumhydroxideneutralizedbythefreeacidspresentin1gofresinorothermaterial.ThedeterminationismadebytitratingthesamplewithKOHinalcoholusingphenolphthaleinasanindicator.acrylates,n—chemicalmaterialswhichcontainthegroupingOCOCHCH2,usuallyintheformofmonomersoroligomers.acrylicresins,n—thermoplasticorthermosettingpolymersorcopolymersderivedfromethenylicallyunsaturatedmono-merssuchasstyrene,acrylic/methacrylicacid,andacrylic/methacrylicacidesters.DISCUSSION—Acrylicresinsareusedmostcommonlyinliquid(forexample,flexoandgravure)inks.Mostwaterbasedinksareformulatedfromacrylicresinsoracrylicemulsions.adhesion,n—stateinwhichtwosurfacesareheldtogetherbyinterfacialforcesthatmayconsistofvalenceforces,inter-lockingaction,orboth.alkyd,n—syntheticresinsformedbythereactionofpolybasicacidswithpolyhydricalcohols,typicallymodifiedwithunsaturatedvegetableoils.DISCUSSION—Alkydsaretypic...
