ISO 6744-2:1999 PDF

Name: ISO 6744-2:1999 — Binders for paints and varnishes — Alkyd resins — Part 2: Determination of phthalic anhydride content
SKU: ISO 6744-2:1999
Price: 25 EUR
Availability: InStock

Binders for paints and varnishes — Alkyd resins — Part 2: Determination of phthalic anhydride content

Название (английский):

ISO 6744-2:1999

Binders for paints and varnishes — Alkyd resins — Part 2: Determination of phthalic anhydride content

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 4
Дата публикации:: 9 декабря 1999 г.
Издание:: ISO IS 6744 edition 1 version 1
ICS:: 87.060.20

Тип поставки:

Full version60 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 раб. дн. (перевод)

Цена:60 €

Описание (английский):

This part of ISO 6744 specifies a method for determining the phthalic anhydride content of alkyd resins. It is only applicable to those alkyd resins which contain only orthophthalic acid as the polybasic acid. It is not applicable to modified alkyd resins (see 3.2 of ISO 6744-1:1999) or to resins containing benzoic acid.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 6744-2:1999 - Binders for paints and varnishes - Alkyd resins - Part 2: Determination of phthalic anhydride content specifies a laboratory method to quantify phthalic anhydride content in alkyd resins. The standard is applicable only to alkyd resins that use orthophthalic acid as the sole polybasic acid and excludes modified alkyds and resins containing benzoic acid. The method is commonly used in quality control and materials testing for paints and varnishes.

Key topics and technical requirements

Scope limitation: Only for alkyds containing orthophthalic acid; not for modified alkyd resins or benzoic-acid-containing resins.

Principle: Saponification of a test portion with potassium hydroxide in alcohol produces potassium phthalate, which is filtered, dried, and weighed. The filtrate is retained for related tests (unsaponifiable matter, fatty acids).

Test procedure essentials:

Typical test portion: 3–5 g (weighed to 1 mg).
Dissolution in toluene, addition of KOH in absolute ethanol (~28 g/L), then reflux with stirring for 2 h.
Filter using a sintered-glass crucible; wash precipitate with a solvent mixture (toluene + ethanol or diethyl ether + ethanol).
Dry precipitate under vacuum then in an oven (~140 °C) and weigh.
Perform duplicate determinations and report the average.

Calculation:

Convert measured potassium phthalate mass to phthalic anhydride using provided factors: 51.4 (monoethanolate) or 61.1 (anhydrous).
If the two calculation routes differ by more than 2 percentage points absolute, the method is not suitable for that resin.

Equipment and reagents: standard laboratory glassware, reflux condenser, sintered-glass filter crucible, drying oven, toluene, ethanol, KOH in ethanol, and grade-3 water per ISO 3696.

Reporting: Results must reference ISO 6744-2, identify the product, state the phthalic anhydride content, note any deviations, and include the test date.

Applications and users

Who uses it: Paint and varnish manufacturers, raw-material suppliers, QC/analytical laboratories, R&D teams, and standards/compliance personnel.

Practical uses:

Batch release testing and quality control of alkyd resin raw materials.
Verification of formulation consistency and feedstock purity.
Supporting comparative testing for process optimization or troubleshooting.
Providing documented test results for regulatory or contractual compliance.

Related standards

ISO 6744-1:1999 - General methods of test for alkyd resins

ISO 6744-3:1999 - Determination of unsaponifiable matter (uses the reserved filtrate)

ISO 6744-4:1999 - Determination of fatty acid content

ISO 3681:1996 - Saponification value (titrimetric method)

ISO 3696:1987 - Water for analytical laboratory use

ISO 15528 - Sampling for paints and varnishes

Keywords: ISO 6744-2, phthalic anhydride content, alkyd resins, binders for paints and varnishes, saponification, potassium phthalate, analytical test method.

ISO 6744-2:1999 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 6744-1:1999

Binders for paints and varnishes — Alkyd resins — Part 1: General methods of test

ISO 6744-3:1999

Binders for paints and varnishes — Alkyd resins — Part 3: Determination of unsaponifiable matter content

ISO 6744-4:1999

Binders for paints and varnishes — Alkyd resins — Part 4: Determination of fatty acid content

ISO 3681:1996

Binders for paints and varnishes — Determination of saponification value — Titrimetric method

ISO 3696:1987

Water for analytical laboratory use — Specification and test methods

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

SIST EN ISO 6744-2:2004

Binders for paints and varnishes - Alkyd resins - Part 2: Determination of phthalic anhydride content (ISO 67…

BS EN ISO 15528:2020

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