ISO INTERNATIONAL STANDARD 11908 First edition 1996-06-01 Binders for paints and varnishes - Amino resins - General methods of test Liants pour peintures et vernis -- Resines aminoplastes -- Methodes générales d'essai OSI Reference number ISO 11908:1996(E) ISO11908:1996(E) Foreword Iso (the International Organization for Standardization) is a worldwide fed- eration of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through IsO which a technical committee has been established has the right to be rep- resented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO col- laborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. culated to the member bodies for voting. Publication as an International a vote. International Standard ISO 11908 was prepared by Technical Committee ISO/TC 35. Paints and varnishes, Subcommittee SC 10, Test methods for binders forpaints andvarnishes. Annex A forms an integral part of this International Standard. @ISO1996 All rights reserved. Unless otherwise specified, no part of this publication may be repro- duced or utilized in any form or by any means. electronic or mechanical, including photo- copying and microfilm, without permission in writing from the publisher. International Organization for Standardization CasePostale56.CH-1211Geneve20·Switzerland Printed in Switzerland ii ISO 11908:1996(E) INTERNATIONAL STANDARD CISO Binders for paints and varnishes - Amino resins - General methods of test 1 Scope Is0 3679:1983, Paints, varnishes, petroleum and re- lated products --Determination of flashpoint -- Rapid This International Standard details general test meth- equilibrium method. ods for amino resins and solutions of amino resins in- tended for use as binders in paints, varnishes and iso 3682:1996, Binders for paints and varnishes - related products. Determination of acid value Titrimetric method. IS0 4630:1981, Binders for paints and varnishes Estimation of colour of clear liquids by the Gardner 2 Normative references colourscale. The following standards contain provisions which, lSO6271:1981,Clearliguids— Estimation of colour through reference inthis text,constitute provisions of by the platinum-cobalt scale. thisInternationalStandard.At the timeof publication, the editions indicated were valid. All standards are IS0 9020:1994, Binders for paints and varnishes subject to revision, and parties to agreements based Determinationoffree-formaldehydecontentof amino on this International Standard are encouraged to in- resinsSodiumsulfitetitrimetricmethod. vestigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid In- ternational Standards. 3 Definition ISO 842:1984, Raw materials for paints and var- nishes - Sampling. For the purposes of this International Standard, the following definition applies. ISO 1523:1983, Paints, varnishes, petroleum and re- latedproducts Determination of flashpoint Closed cup equilibrium method. 3.1 amino resin: Synthetic resin resulting from the condensationof melamineorurea ortheir derivatives IS0 2811:1974, Paints and varnishes --- Determination such as benzoguanamine with formaldehyde. These of density. resins are often etherified with alcohols. IsO3219:1993,Plastics — Polymers/resins in the liquid state or as emulsions or dispersions -Deter- mination of viscosity using a rotational viscometer Properties and test methods with defined shear rate 4 ISO3251:1993,Paintsandvarnishes Determination Unlessotherwise agreed, the properties to be of non-volatile matter of paints, varnishes and binders measured and the test methods to be used shall be as forpaintsandvarnishes given in table 1. 1