EN ISO 23900-4:2018

Pigments and extenders - Methods of dispersion and assessment of dispersibility in plastics - Part 4: Determination of colouristic properties and ease of dispersion of white pigments in polyethylene by two-roll milling (ISO 23900-4:2015)

ISO 23900-4:2015 specifies a method of determining the colouristic properties of a test pigment in polyethylene (PE) relative to a standard, and the ease of dispersion DHPE of pigments from the differences in tinting strength of dispersing colouring materials under various conditions. The method is appropriate for use with white pigments.

Pigmente und Füllstoffe - Dispergierverfahren und Beurteilung der Dispergierbarkeit in Kunststoffen - Teil 4: Bestimmung der koloristischen Eigenschaften und der Dispergierhärte von Weißpigmenten in Polyethylen im Walztest (ISO 23900-4:2015)

Pigments et matières de charge - Méthodes de dispersion et évaluation de l'aptitude à la dispersion dans les plastiques - Partie 4: Détermination des propriétés colorimétriques et de la facilité de dispersion des pigments blancs dans le polyéthylène par calandrage sur bicylindre (ISO 23900-4:2015)

ISO 23900-4:2015 spécifie une méthode permettant de déterminer les propriétés colorimétriques d'un pigment d'essai dans du polyéthylène (PE) par rapport à un étalon, et la facilité de dispersion DHPE des pigments à partir des différences de pouvoir colorant lorsque des matières colorantes sont dispersées dans différentes conditions.
Cette méthode convient pour une utilisation avec des pigments blancs.
La facilité de dispersion déterminée de cette manière n'est valable que pour l'équipement, les conditions et le milieu de dispersion utilisés. La mise en ?uvre de conditions d'essai différentes de celles spécifiées peut conduire à des résultats différents; cela vaut pour la valeur absolue et pour le rapport entre les valeurs obtenues pour la facilité de dispersion des divers pigments. L'indice DHPE est donc utilisé pour désigner la valeur obtenue comme spécifié dans la présente partie de l'ISO 23900.

Pigmenti in polnila - Metode dispergiranja in ocenjevanje disperzibilnosti v polimernih materialih - 4. del: Določevanje barvnih lastnosti in dispergiranja belih pigmentov v polietilenu z valjanjem z dvema valjčkoma (ISO 23900-4:2015)

ISO 23900-4:2015 določa postopek za določanje barvnih značilnosti preskusnega pigmenta v polietilenu (PE) glede na standard in dispergiranje pigmentov DHPE na podlagi razlik v barvni jakosti pri dispergiranju barvnih materialov v različnih pogojih. Metoda je primerna za uporabo z belimi pigmenti.

General Information

• Status: Published
• Publication Date: 18-Sep-2018
• Withdrawal Date: 30-Mar-2019
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: CEN/TC 298 - Pigments and extenders
• Drafting Committee: CEN/TC 298 - Pigments and extenders
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 19-Sep-2018
• Due Date: 15-Aug-2019
• Completion Date: 19-Sep-2018
• Ref Project: SIST EN ISO 23900-4:2018 - Pigments and extenders - Methods of dispersion and assessment of dispersibility in plastics - Part 4: Determination of colouristic properties and ease of dispersion of white pigments in polyethylene by two-roll milling (ISO 23900-4:2015)

Relations

• Replaces: EN 13900-4:2004 - Pigments and extenders - Methods of dispersion and assessment of dispersibility in plastics - Part 4: Determination of colouristic properties and ease of dispersion of white pigments in polyethylene by two-roll milling
• Effective Date: 26-Sep-2018

Overview

EN ISO 23900-4:2018 (ISO 23900-4:2015) specifies a laboratory method for assessing the colouristic properties and ease of dispersion of white pigments in polyethylene (PE) using two-roll milling. The standard defines how to prepare PE/pigment mixtures (including a carbon‑black masterbatch), process them on a two‑roll mill, produce test specimens, and measure changes in tinting strength by photometric methods. The measured increase in tinting strength after additional milling is used to calculate the ease of dispersion value (DH for PE), which is valid for the specified equipment and conditions.

Key topics and technical requirements

• Purpose: determination of colouristic properties of a test pigment in PE relative to a standard and quantification of ease of dispersion (DH_PE) from differences in tinting strength.
• Principle: disperse pigment in PE on a two‑roll mill, cool and remill at a narrower gap; the increase in tinting strength indicates dispersion performance.
• Typical formulation and sampling:
  • Example blending proportions given: 100 parts polyethylene, 0.05 parts carbon black masterbatch, and 5 parts titanium dioxide (test pigment).
  • Representative sampling per ISO 15528.
• Apparatus and process parameters (as specified in the standard):
  • Two‑roll mill with heating, adjustable roll spacing; roll diameter typically 80–200 mm.
  • Roll peripheral speed ratio normally between 1:1.1 and 1:1.2 (machine similarity guidance also provided).
  • Plate press for sample forming and a photometer for colour/tint measurement.
  • Milled sheet thickness and bank/gap geometry guidance to ensure comparable results.
• Measurement and evaluation: photometric measurement of tinting strength and calculation of DH_PE; results are equipment- and condition‑dependent.

Applications and users

• Practical uses:
  • Quality control and acceptance testing of white pigments (e.g., titanium dioxide) for polyethylene compounds.
  • Comparative evaluation of pigment batches, supplier verification and specification compliance.
  • R&D and formulation optimization for masterbatches and compounded PE products where opacity, whiteness and dispersibility matter.
• Typical users:
  • Pigment and extender manufacturers
  • Polymer compounders and masterbatch producers
  • Analytical and quality laboratories in plastics, coatings and raw materials
  • Procurement/specification engineers assessing pigment performance

Related standards and references

• ISO 23900 series (Parts 1–6) - general introduction and related dispersion/assessment methods (Parts 1, 2, 3, 5, 6).
• Normative references cited: ISO 787-24 (tinting strength photometric methods), ISO 15528 (sampling), ISO 18314-1 (analytical colorimetry).
• Note: the DH_PE result applies only to the specified dispersion equipment and test conditions; differing conditions can alter absolute values and ranking.

Keywords: pigments, extenders, dispersibility, polyethylene, two-roll milling, white pigments, tinting strength, ease of dispersion, DH_PE, colouristic properties.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2018
1DGRPHãþD
SIST EN 13900-4:2004
3LJPHQWLLQSROQLOD0HWRGHGLVSHUJLUDQMDLQRFHQMHYDQMHGLVSHU]LELOQRVWLY
SROLPHUQLKPDWHULDOLKGHO'RORþHYDQMHEDUYQLKODVWQRVWLLQGLVSHUJLUDQMDEHOLK
SLJPHQWRYYSROLHWLOHQX]YDOMDQMHP]GYHPDYDOMþNRPD,62
Pigments and extenders - Methods of dispersion and assessment of dispersibility in
plastics - Part 4: Determination of colouristic properties and ease of dispersion of white
pigments in polyethylene by two-roll milling (ISO 23900-4:2015)
Pigmente und Füllstoffe - Dispergierverfahren und Beurteilung der Dispergierbarkeit in
Kunststoffen - Teil 4: Bestimmung der koloristischen Eigenschaften und der
Dispergierhärte von Weißpigmenten in Polyethylen im Walztest (ISO 23900-4:2015)
Pigments et matières de charge - Méthodes de dispersion et évaluation de l'aptitude à la
dispersion dans les plastiques - Partie 4: Détermination des propriétés colorimétriques et
de la facilité de dispersion des pigments blancs dans le polyéthylène par calandrage sur
bicylindre (ISO 23900-4:2015)
Ta slovenski standard je istoveten z: EN ISO 23900-4:2018
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
87.060.10 Pigmenti in polnila Pigments and extenders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 23900-4
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2018
EUROPÄISCHE NORM
ICS 87.060.10 Supersedes EN 13900-4:2004
English Version
Pigments and extenders - Methods of dispersion and
assessment of dispersibility in plastics - Part 4:
Determination of colouristic properties and ease of
dispersion of white pigments in polyethylene by two-roll
milling (ISO 23900-4:2015)
Pigments et matières de charge - Méthodes de Pigmente und Füllstoffe - Dispergierverfahren und
dispersion et évaluation de l'aptitude à la dispersion Beurteilung der Dispergierbarkeit in Kunststoffen -
dans les plastiques - Partie 4: Détermination des Teil 4: Bestimmung der koloristischen Eigenschaften
propriétés colorimétriques et de la facilité de und der Dispergierhärte von Weißpigmenten in
dispersion des pigments blancs dans le polyéthylène Polyethylen im Walztest (ISO 23900-4:2015)
par calandrage sur bicylindre (ISO 23900-4:2015)
This European Standard was approved by CEN on 18 August 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23900-4:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 23900-4:2015 has been prepared by Technical Committee ISO/TC 256 "Pigments,
dyestuffs and extenders” of the International Organization for Standardization (ISO) and has been taken
over as EN ISO 23900-4:2018 by Technical Committee CEN/TC 298 “Pigments and extenders” the
secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2019, and conflicting national standards shall
be withdrawn at the latest by March 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13900-4:2004.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 23900-4:2015 has been approved by CEN as EN ISO 23900-4:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 23900-4
First edition
2015-05-01
Pigments and extenders — Methods
of dispersion and assessment of
dispersibility in plastics —
Part 4:
Determination of colouristic
properties and ease of dispersion of
white pigments in polyethylene by
two-roll milling
Pigments et matières de charge — Méthodes de dispersion et
évaluation de l’aptitude à la dispersion dans les plastiques —
Partie 4: Détermination des propriétés colorimétriques et de la
facilité de dispersion des pigments blancs dans le polyéthylène par
calandrage sur bicylindre
Reference number
ISO 23900-4:2015(E)
©
ISO 2015
ISO 23900-4:2015(E)
© ISO 2015
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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ii © ISO 2015 – All rights reserved

ISO 23900-4:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Materials . 2
5.1 Polyethylene . 2
5.2 Carbon black polyethylene masterbatch . 2
6 Apparatus . 2
7 Sampling . 2
8 Procedure. 2
8.1 Testing of colouristic properties in polyethylene in admixture with carbon black . 2
8.1.1 Preparation of the mixture . 2
8.1.2 Preparation of the test sample . 3
8.1.3 Pressing . 3
8.1.4 Photometric measurement . 3
8.2 Testing of ease of dispersion . 3
8.2.1 Preparation of the test samples . 3
8.2.2 Pressing and photometric measurement . 3
9 Evaluation . 3
10 Test report . 4
11 Precision .
...