ISO 7142-2023 PDF

Full title and description

Binders for paints and varnishes — Epoxy resins — General methods of test. International Standard specifying general laboratory test methods and related requirements for epoxy resins and their solutions when intended for use as binders in paints, varnishes and similar coating systems (ISO 7142:2023).

Abstract

This standard specifies general methods of test for epoxy resins intended for use in paints, varnishes and similar products, and for solutions made from epoxy resins that are to be used as binders. The test methods in this document are not intended for epoxy esters; normative references and sampling/test-report requirements are included.

General information

• Status: Published (current International Standard).
• Publication date: 26 January 2023 (ISO edition published in January 2023).
• Publisher: International Organization for Standardization (ISO), technical committee ISO/TC 35 (Paints and varnishes).
• ICS / categories: 87.060.20 (Binders for paints and varnishes).
• Edition / version: Edition 3 (2023).
• Number of pages: 7 (ISO edition, concise format).

Key bibliographic and lifecycle details above are drawn from the ISO publication record for ISO 7142:2023.

Scope

ISO 7142:2023 covers general laboratory methods of test applicable to epoxy resins used as binders in paints and varnishes and to solutions of such resins. It is intended to provide agreed, repeatable procedures for sampling, testing and reporting so that resin suppliers, formulators and testing laboratories have consistent, comparable results; the standard explicitly excludes epoxy esters from its test-method scope.

Key topics and requirements

• General methods of test for epoxy resins and resin solutions intended as binders in coating systems (sampling, preparation, test reporting).
• Scope limits: applicability to epoxy resins and solutions, exclusion of epoxy esters.
• Normative references and interlinked test methods (e.g., referenced methods for flash point, sampling and related determinations used together with ISO 7142).
• Requirements for clear documentation of the test method chosen for a given resin (tests to be agreed between interested parties where appropriate).
• Annex material (e.g., historic inclusion of hydroxyl-value determination in earlier editions) and cross-references to specific physical/chemical test procedures.

Typical use and users

Used by epoxy-resin manufacturers, paint and varnish formulators, independent testing and certification laboratories, quality-control teams in coatings production, standards committees and procurement/specification authors who need harmonized test procedures for binder materials.

Related standards

ISO 7142 is used together with related standards referenced normatively (for example, methods for flash point, sampling and selected chemical determinations). The 2023 edition supersedes the 2007 edition (ISO 7142:2007) and earlier 1984 edition; it has also been adopted in regional/ national collections (for example as EN/BS/DIN/UNE adoptions). For typical cross-references see the normative-reference list in the ISO publication.

Keywords

epoxy resins, binders, paints, varnishes, test methods, sampling, hydroxyl value, epoxy equivalent, quality control.

FAQ

Q: What is this standard?

A: ISO 7142:2023 is an International Standard that defines general laboratory methods of test for epoxy resins and solutions intended as binders for paints and varnishes.

Q: What does it cover?

A: It covers sampling, general test procedures, reporting requirements and normative references applicable to epoxy resins used in coatings, and clarifies that the methods are not intended for epoxy esters.

Q: Who typically uses it?

A: Resin producers, coatings formulators, QC/testing laboratories, conformity assessment bodies and standards authors who require harmonized test procedures for binder materials.

Q: Is it current or superseded?

A: It is current — the 2023 edition (Edition 3) is published and supersedes the previous ISO 7142:2007 edition.

Q: Is it part of a series?

A: ISO 7142 sits within the family of ISO standards for binders and paints (ISO/TC 35 work) and is cross-referenced with other ISO methods for specific measurements (flash point, sampling, chlorine content, epoxy-equivalent determinations, etc.).

Q: What are the key keywords?

A: Epoxy resins; binders; paints; varnishes; test methods; sampling; epoxy equivalent; hydroxyl value; quality control.