1、BRITISH STANDARD BS EN ISO 6744-4:2004 BS 6782-16.4:2000 Incorporating Corrigendum No. 1 and A m e nd m e n t N o . 1 t o BS 6782-16.4:2000 (Amendment No. 1 renumbers BS 6782-16.4:2000 as BS EN ISO 6744-4:2004) Binders for paints and varnishes Alkyd resins Part 4: Determination of fatty acid content
2、 The European Standard EN ISO 6744-4:2004 has the status of a British Standard ICS 87.060.20 BS EN ISO 6744-4:2004 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and com
3、es into effect on 15 January 2001 BSI 14 July 2004 ISBN 0 580 34300 6 National foreword This British Standard is the official English language version of EN ISO 6744-4:2004. It is identical with ISO 6744-4:1999. The UK participation in its preparation was entrusted to Technical Committee STI/3, Pain
4、t media and related products, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in
5、 the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsib
6、le for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the U
7、K interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii and iii, a blank page, pages 1 to
8、3, the Annex ZA page, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 10886 Corrigendum No. 1 December 2000 Correction to identifier 15241 14 July 2004 I
9、mplementation of the European StandardEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO67444 May2004 ICS87.060.20 Englishversion BindersforpaintsandvarnishesAlkydresinsPart4: Determinationoffattyacidcontent(ISO67444:1999) LiantspourpeinturesetvernisRsinesalkydesPartie4: Dterminationdelateneurenac
10、idesgras(ISO6744 4:1999) BindemittelfrBeschichtungsstoffeAlkydharzeTeil4: BestimmungdesGehaltesanFettsure(ISO67444:1999) ThisEuropeanStandardwasapprovedbyCENon8April2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatu
11、sofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation un
12、dertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxem
13、bourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymean
14、sreserved worldwideforCENnationalMembers. Ref.No.ENISO67444:2004EINESO7644:42(400E) 2 Foreword ThetextofISO67444:1999hasbeenpreparedbyTechnicalCommitteeISO/TC35“Paintsand varnishes”oftheInternationalOrganizationforStandardization(ISO)andhasbeentakenover asENISO67444:2004byTechnicalCommitteeCEN/TC139
15、“Paintsandvarnishes“,the secretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyNovember2004,andconflictingnational standardsshallbewithdrawnatthelatestbyNovember2004. AccordingtotheCEN/CENELECInte
16、rnalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium, Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary, Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland, Portugal,Sl
17、ovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. Endorsementnotice ThetextofISO67444:1999hasbeenapprovedbyCENasENISO67444:2004withoutany modifications. NOTENormativereferencestoInternationalStandardsarelistedinAnnexZA(normative). ENISO67444:2004Referencenumber ISO6744-4:1999(E) INTERNATIONA
18、L STANDARD ISO 6744-4 Firstedition 1999-12-01 BindersforpaintsandvarnishesAlkyd resins Part4: Determinationoffattyacidcontent Liants pour peintures et vernis Rsines alkydes Partie 4: Dtermination de la teneur en acide gras ENISO67444:2004ii ENISO67444:2004ISO6744-4:1999(E)iii Foreword ISO(theInterna
19、tionalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresented
20、onthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenint
21、heISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthispartofISO6744maybeth
22、esubjectofpatent rights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO6744-4waspreparedbyTechnicalCommitteeISO/TC35, Paints and varnishes, SubcommitteeSC10, Test methods for binders for paints and varnishes. Togetherwiththeotherparts(seebelow),thispartof
23、ISO6744cancelsandreplacesISO6744:1984,whichhas beentechnicallyrevised. ISO6744consistsofthefollowingparts,underthegeneraltitle Binders for paints and varnishes Alkyd resins: Part 1: General methods of test Part 2: Determination of phthalic anhydride content Part 3: Determination of unsaponifiable ma
24、tter content Part 4: Determination of fatty acid content ENISO67444:2004blank ENISO67444:2004INTERNATIONALSTANDADR ISO-44764:(9991)E1 BindersforpaintsandvarnishesAlkydresins Part4: Determinationoffattyacidcontent 1 Scope ThispartofISO6744specifiesamethodfordeterminingthefattyacidcontentofalkydresins
25、.Itisalwaysusedin conjunctionwithISO6744-2and-3,whichcontaintheprecedinganalysissteps. Itisnotapplicabletomodifiedalkydresins(see3.2ofISO6744-1:1999)ortoresinscontainingbenzoicacid. 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovis
26、ionsof thispartofISO6744.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublications donotapply.However,partiestoagreementsbasedonthispartofISO6744areencouragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundated references,th
27、elatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIECmaintain registersofcurrentlyvalidInternationalStandards. ISO3696:1987, Water for analytical laboratory use Specification and methods of test. ISO6744-1:1999, Binders for paints and varnishes Alkyd resins Part 1: General methods
28、 of test. ISO6744-2:1999, Binders for paints and varnishes Alkyd resins Part 2: Determination of phthalic anhydride content. ISO6744-3:1999, Binders for paints and varnishes Alkyd resins Part 3: Determination of unsaponifiable matter content. ISO15528: 1) , Paints, varnishes and raw materials for pa
29、ints and varnishes Sampling. 3Principle Theamountoffattyacidsinanalkydresinisdeterminedbysaponificationandfiltration(ISO6744-2)andremoval ofunsaponifiablematter(ISO6744-3).Thefattyacidcontentiscalculatedfromthemassoftheresidueobtained onevaporationoftheethyletherextract. 1)Tobepublished.(RevisionofI
30、SO842:1984andISO1512:1991) ENISO67444:2004ISO-44764:(9991)E 2 4 Reagents Duringtheanalysis,useonlyreagentsofrecognizedanalyticalgradeandonlywaterofatleastgrade3purityas definedinISO3696. 4.1 Diethylether,freefromperoxides,towhichacrystalofhydroquinonehasbeenadded. 4.2 Acetone. 4.3 Hydrochloricacid,a
31、pproximately73gofHClperlitre. 4.4 Silvernitrate,approximately10g/lsolution. 5 Apparatus Ordinarylaboratoryapparatusandglassware,togetherwiththefollowing: 5.1 Separatingfunnel,ofcapacity250ml. 5.2 Distillationapparatus,witharotaryevaporatororwaterbath. 5.3 Vacuumdryingoven,capableofbeingmaintainedata
32、pproximately60C. 6 Sampling Takearepresentativesampleoftheproducttobetested,asdescribedinISO15528. 7 Procedure Carryoutthedeterminationinduplicate. If,inISO6744-3,thediethylethermethodforthedeterminationoftheunsaponifiablemattercontentwasused, transfertheaqueoussolutionobtainedasdescribedinISO6744-3
33、:1999,subclause7.2,quantitativelyintothe separatingfunnel(5.1). If,inISO6744-3,thelightpetroleummethodforthedeterminationoftheunsaponifiablemattercontentwasused, evaporatetheaqueousethanolicsolutionobtainedafterseparationoftheunsaponifiablematter,togetherwiththe alkalinewashings,untilthealcoholhasbe
34、encompletelyremoved.Thentransferwithwaterintotheseparating funnel(5.1). Acidifythesolutionwithhydrochloricacid(4.3)andextractthreetimes,eachtimewith50mlofdiethylether(4.1). Washthecombinedetherextractswithwateruntilnochlorideionsaredetectablewithsilvernitratesolution(4.4). Thenevaporatetheetherusing
35、asuitableapparatus(5.2),eitherunderinertgasusingadistillationapparatuswith arotaryevaporatoror,whileobservingallrequiredsafetyprecautions,overawaterbath.Ifnecessary,removeany waterpresentbyadditionofacetone(4.2)andevaporatingasdescribedabove. Drytheresidueinthevacuumdryingoven(5.3)atapproximately60C
36、untilthedifferencebetweentheresultsof twoconsecutiveweighingsisnotgreaterthan0,1%,calculatedonthebasisofthelowervalue.Weightheresidue tothenearest1mg(m 4 ). ENISO67444:2004ISO-44764:(9991)E3 8 Expressionofresults Calculatethefattyacidcontentw F ,expressedasapercentagebymass,bytheequation w m m F 4 0
37、 100 where m 0 isthemass,ingrams,ofthetestportion(seeISO6744-2:1999,subclause7.2); m 4 isthemass,ingrams,oftheresidue. Thefattyacidcontentshallbecalculatedonthebasisoftheresinor,forresinsolutions,onthebasisofthenon- volatilemattercontentofthesolution. 9 Testreport Thetestreportshallcontainatleastthe
38、followinginformation: a) areferencetothispartofISO6744(ISO6744-4); b) alldetailsnecessarytoidentifytheproducttested; c) theresultofthetest,asindicatedinclause8; d) anydeviationfromthetestmethodspecified; e) thedateofthetest. ENISO67444:2004INESO7644:42(400E) 3 AnnexZA (normative) Normativereferences
39、tointernationalpublications withtheirrelevantEuropeanpublications ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetextandthe publicationsarelistedhereafter.Fordatedreferences,subsequentamendmentstoo
40、rrevisionsof anyofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinitby amendmentorrevision.Forundatedreferencesthelatesteditionofthepublicationreferredto applies(includingamendments). NOTEWhereanInternationalPublicationhasbeenmodifiedbycommonmodifications,indicated by(mod.),therele
41、vantEN/HDapplies. Publication Year Title EN Year ISO3696 1987 Waterforanalyticallaboratoryuse Specificationandtestmethods ENISO3696 1995 ISO15528 2000 Paints,varnishesandrawmaterials forpaintsandvarnishesSampling ENISO15528 2000 ENISO67444:2004blank ENISO67444:2004BS EN ISO 6744-4:2004 BS 6782-16.4:
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