ISO 7142:2023 PDF

Name: ISO 7142:2023 — Binders for paints and varnishes — Epoxy resins — General methods of test
SKU: ISO 7142:2023
Price: 25 EUR
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Binders for paints and varnishes — Epoxy resins — General methods of test

Название (английский):

ISO 7142:2023

Binders for paints and varnishes — Epoxy resins — General methods of test

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 26 января 2023 г.
Издание:: ISO IS 7142 edition 3 version 1
ICS:: 87.060.20

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Описание (английский):

This document specifies general methods of test for epoxy resins for use in paints, varnishes and similar products. It is also applicable to those solutions made from epoxy resins that are intended for use as binders for paints and varnishes. The test methods described in this document are not intended for epoxy esters.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 7142:2023 - Binders for paints and varnishes - Epoxy resins - General methods of test - specifies general test methods for epoxy resins and epoxy-resin solutions intended as binders for paints and varnishes. It defines required tests, sampling reference, and the minimum content of test reports. The standard explicitly excludes epoxy esters.

Key topics and technical requirements

Scope & applicability

Applies to epoxy resins used in paints, varnishes and similar products, including resin solutions used as binders.
Not intended for epoxy esters.

Sampling

Requires a representative sample taken in accordance with ISO 15528 (sampling of paints, varnishes and raw materials).

Mandatory test properties (Table 1)

Colour - ISO 4630 (Gardner) or ISO 6271 (platinum‑cobalt)
Viscosity - ISO 3219-2 or agreed methods (flow-time per ISO 2431 if used)
Non‑volatile matter - ISO 3251
Flash point - ISO 1523 or ISO 3679
Epoxy equivalent - ISO 3001
Hydroxyl value - normative Annex A (titrimetric method described)
Total chlorine - ISO 4615
Easily saponifiable chlorine - ISO 21627-2
Melting point - ISO 3146
Softening point - ISO 4625-1 or ISO 4625-2

Annex A - Hydroxyl value

Provides reagents, apparatus and titration procedure to determine hydroxyl equivalent and express hydroxyl value (g KOH/kg).
Precision: repeatability ~10%, reproducibility ~20%.

Test report content

Must include product ID, reference to ISO 7142:2023, test results and methods, deviations, anomalies and test dates.

Practical applications and users

ISO 7142:2023 is designed for practical quality control, specification and communication across the paint, coatings and resin supply chain. Typical users:

Coating manufacturers and formulators verifying binder quality before production.

Raw material suppliers specifying epoxy resin properties for commercial data sheets.

QC/analytical labs performing standardized tests (epoxy equivalent, hydroxyl value, viscosity, colour, chlorine content, flash point).

Procurement and specification engineers who need reproducible test methods to compare materials or enforce purchase specifications.

Using ISO 7142:2023 ensures consistent, comparable data on critical binder properties and supports regulatory, safety and performance assessments in coatings formulation.

Related standards

Commonly used normative references cited in ISO 7142:2023 include:

Keywords: ISO 7142:2023, epoxy resins, binders for paints and varnishes, test methods, hydroxyl value, epoxy equivalent, paint binder testing.

ISO 7142:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

BS EN ISO 15528:2020

Paints, varnishes and raw materials for paints and varnishes. Sampling.

SIST EN ISO 4630:2016

Clear liquids - Estimation of colour by the Gardner colour scale (ISO 4630:2015)

SIST EN ISO 6271:2016

Clear liquids - Estimation of colour by the platinum-cobalt colour scale (ISO 6271:2015)

SIST EN ISO 3219-2:2021

Rheology - Part 2: General principles of rotational and oscillatory rheometry (ISO 3219-2:2021)

SIST EN ISO 2431:2019

Paints and varnishes - Determination of flow time by use of flow cups (ISO 2431:2019)

SIST EN ISO 3233-2:2019

Paints and varnishes - Determination of the percentage volume of non-volatile matter - Part 2: Method using t…

BS EN ISO 15236-2:2017

Steel cord conveyor belts. Preferred belt types.

SIST EN ISO 3679:2023

Determination of flash point - Method for flash no-flash and flash point by small scale closed cup tester (IS…