ISO INTERNATIONAL STANDARD 23900-1 First edition 2015-05-01 Pigments and extenders Methods of dispersion and assessment of dispersibility in plastics Part 1: General introduction Pigments et matieres de charge - Méthodes de dispersion et évaluation de I'aptitude a la dispersion dans les plastiques - Partie 1: Généralités Reference number ISO 23900-1:2015(E) ISO International Organization for Standardization @IS02015 HS unde mitted without license from IHS IS0 23900-1:2015(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2015 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax +41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland Internatinai br DrganizationforStandardization Not for Resale, 2015/6/29 09:31:21 networking permited without license from IHS IS0 23900-1:2015(E) Contents Page Foreword ..iv 1 Scope 1 2 Normative references ..1 3 Terms and definitions 4 Methods of dispersion and methods of assessment .2 4.1 Preliminary agreements .2 4.2 Plastics materials..... .2 4.3 Methods of dispersion 2 4.4 Methods of assessment. 2 5 Procedures 5.1 Determination of colouristic properties and ease of dispersion in plasticized polyvinyl chloride by two-roll milling. 5.2 Determination of colouristic properties and ease of dispersion of black and colour pigments in polyethylene by two-roll milling 3 5.3 Determination of colouristic properties and ease of dispersion of white pigments in polyethylene by two-roll milling 3 5.4 Determination of dispersibility of pigments by filter pressure value test 3 5.5 Determination of dispersibility of pigments by film test .3 6 Precision 3 ii icensee=Zhejiang Institute of Standardization 5956617 vided by IHS under I ithout license from IHS Not for Resale, 2015/6/29 09:31:21