Paints and varnishes - Electro-deposition coatings - Part 16: Pigment-binder ratio

This document specifies a test method for determining the pigment-binder ratio. It applies to electro-deposition coatings for automotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture.

Peintures et vernis — Peintures d'électrodéposition — Partie 16: Rapport du pigment au liant

Le présent document spécifie une méthode d’essai pour la détermination du rapport du pigment au liant. Il s'applique aux peintures d'électrodéposition destinées aux industries automobiles et autres applications industrielles générales, par exemple unités frigorifiques, biens de consommation, radiateurs, aérospatiale, agriculture.

General Information

Status
Published
Publication Date
09-Oct-2022
Current Stage
6060 - International Standard published
Start Date
10-Oct-2022
Due Date
29-Jun-2023
Completion Date
10-Oct-2022

Overview - ISO 22553-16:2022 (Pigment‑binder ratio)

ISO 22553-16:2022 specifies a laboratory test method to determine the pigment‑binder ratio in electro‑deposition coatings (e‑coat). The method quantifies solids composition by measuring ash content and non‑volatile matter to calculate pigment and binder fractions. It is intended for automotive and general industrial applications (e.g., chillers, consumer products, radiators, aerospace, agriculture).

Key topics and technical requirements

  • Scope and principle
    • Determines pigment content from ash (residue on ignition) and binder content from non‑volatile‑matter (NV) determinations; pigment‑binder ratio is calculated from these results.
  • Apparatus and sample sizes
    • Typical equipment: high‑form porcelain crucible, muffle furnace (600–900 °C for ashing), oven with horizontal ventilation (105 °C ±2 °C), analytical balance (0.001 g), desiccator, crucible tongs.
    • Test portion masses: ash test 2–3 g; NV test (per ISO 3251) 1.0 ± 0.1 g.
  • Procedure essentials
    • Ash content: dry sample, ignite to constant mass, calculate ash %; duplicate determinations required. If duplicates differ by >0.2% (absolute) repeat test. Report mean to nearest 0.1% (absolute).
    • Correction factor: pigment content = ash content × product‑specific correction factor (provided by manufacturer) to account for ignition loss and composition of solids.
    • Binder content: determine NV (ISO 3251) using specified heating variations (e.g., 180 °C for 30 min or 105 °C for 180 min), then binder % = NV − pigment %.
    • Final pigment‑binder ratio: mass fraction of pigment divided by binder (reported per Clause 7).
  • Reporting and precision
    • No precision data are given in the standard.
    • Test report must identify the coating, reference ISO 22553-16:2022, state the pigment‑binder ratio, note deviations, anomalies and test date.

Applications and who uses it

  • Quality control laboratories in automotive e‑coat and industrial coating manufacturers.
  • R&D and formulation teams verifying pigment load and binder balance in e‑coat baths.
  • Suppliers, specifiers and compliance engineers creating material specifications or investigating bath stability and performance.
  • Useful for process control, supplier verification, troubleshooting and comparative testing.

Related standards

  • ISO 3251 - Determination of non‑volatile‑matter content (referenced for NV testing)
  • ISO 1513 - Sample preparation and examination
  • ISO 15528 - Sampling of paints and varnishes
  • ISO 4618 and ISO 22553‑1 - Terms, definitions and vocabulary for paints and e‑coats
  • Other parts of the ISO 22553 series for electro‑deposition coatings

Keywords: ISO 22553-16, pigment-binder ratio, electro-deposition coatings, e-coat testing method, ash content, non-volatile matter, ISO 3251, automotive coating QC.

Standard

ISO 22553-16:2022 - Paints and varnishes — Electro-deposition coatings — Part 16: Pigment-binder ratio Released:10. 10. 2022

English language
4 pages
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Frequently Asked Questions

ISO 22553-16:2022 is a standard published by the International Organization for Standardization (ISO). Its full title is "Paints and varnishes - Electro-deposition coatings - Part 16: Pigment-binder ratio". This standard covers: This document specifies a test method for determining the pigment-binder ratio. It applies to electro-deposition coatings for automotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture.

This document specifies a test method for determining the pigment-binder ratio. It applies to electro-deposition coatings for automotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture.

ISO 22553-16:2022 is classified under the following ICS (International Classification for Standards) categories: 87.040 - Paints and varnishes. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 22553-16:2022 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 22553-16
First edition
2022-10
Paints and varnishes — Electro-
deposition coatings —
Part 16:
Pigment-binder ratio
Peintures et vernis — Peintures d'électrodéposition —
Partie 16: Rapport du pigment au liant
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 S c op e . 1
2 Nor m at i ve r ef er enc e s . 1
3 Terms and definitions . 1
4 P r i nc iple . 1
5 Determination of pigment content .1
5 .1 A pp a r at u s . 1
5 . 2 S a mpl in g . 2
5 . 3 P r o ce du r e . 2
5.4 Calculation of the pigment content . 2
6 D etermination of the binder content .3
6 .1 P r o c e du r e . 3
6.2 C alculation of the pigment-binder ratio . 3
7 Calculation of the pigment-binder ratio. 3
8 P r e c i s ion . 4
9 Te s t r ep or t . 4
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
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For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee
SC 9, General test methods for paints and varnishes.
A list of all parts in the ISO 22553 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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