ISO 6744-4:1999 PDF

Name: ISO 6744-4:1999 — Binders for paints and varnishes — Alkyd resins — Part 4: Determination of fatty acid content
SKU: ISO 6744-4:1999
Price: 25 EUR
Availability: InStock

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

Название (английский):

ISO 6744-4:1999

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

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 3
Дата публикации:: 9 декабря 1999 г.
Издание:: ISO IS 6744 edition 1 version 1
ICS:: 87.060.20

Тип поставки:

Full version45 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 раб. дн. (перевод)

Цена:45 €

Описание (английский):

This part of ISO 6744 specifies a method for determining the fatty acid content of alkyd resins. It is always used in conjunction with ISO 6744-2 and -3, which contain the preceding analysis steps. 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 6744-4:1999 specifies a laboratory method for the determination of fatty acid content in alkyd resins, part of the ISO 6744 series for binders used in paints and varnishes. This part is intended to be used together with ISO 6744-2 and ISO 6744-3 (which cover preceding analysis steps) and is not applicable to modified alkyd resins or resins containing benzoic acid. The method measures fatty acids remaining after saponification and removal of unsaponifiable matter and expresses the result as a percentage by mass.

Key topics and requirements

Scope and applicability: Applies to conventional alkyd resins; excludes modified alkyd resins and resins with benzoic acid.

Analytical principle: Determine fatty acid content after saponification and removal of unsaponifiable matter; extract fatty acids into diethyl ether, evaporate solvent and weigh the residue.

Sample handling: Sampling should follow ISO 15528 to ensure representative test portions.

Reagents and apparatus:

Diethyl ether (peroxide-free, with hydroquinone), acetone, hydrochloric acid (~73 g/L), silver nitrate (~10 g/L).
Separating funnel (250 ml), distillation/rotary evaporator or water bath, vacuum drying oven (~60 °C).

Procedure essentials:

Work in duplicate.
Acidify aqueous solution, extract three times with diethyl ether.
Wash combined ether extracts until no chloride detected (silver nitrate test).
Evaporate solvent (rotary evaporator or water bath with safety precautions), remove residual water with acetone if needed.
Dry residue in vacuum oven at ~60 °C to constant mass (consecutive weighings within 0.1%).

Result expression: Fatty acid content (%) = (mass of residue after evaporation / mass of test portion) × 100.

Quality and reporting: Report reference to ISO 6744-4, product identification, result, deviations, and test date.

Applications and users

ISO 6744-4 is used for quality control, specification verification and R&D where accurate fatty acid quantification in alkyd resins is required. Typical users:

Paint and varnish manufacturers (formulation and QC labs)

Raw material suppliers and resin producers

Independent testing laboratories and accreditation bodies

R&D chemists evaluating alkyd resin composition and consistency

Practical benefits include reproducible fatty acid measurement for batch control, ingredient traceability, and compliance with contractual or regulatory specifications.

Related standards

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

ISO 6744-2:1999 - Determination of phthalic anhydride content (preceding steps)

ISO 6744-3:1999 - Determination of unsaponifiable matter content (preceding steps)

ISO 3696 - Water for analytical laboratory use

ISO 15528 - Sampling of paints, varnishes and raw materials

Keywords: ISO 6744-4, fatty acid content, alkyd resins, binders for paints and varnishes, test method, saponification, unsaponifiable matter, paint industry quality control.

ISO 6744-4:1999 PDF

Abstract

Похожие стандарты

Overview

Key topics and 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 6744-2:1999

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

ISO 6744-3:1999

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

SIST EN ISO 6744-3:2004

Binders for paints and varnishes - Alkyd resins - Part 3: Determination of unsaponifiable matter content (ISO…

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.

SIST EN ISO 6744-4:2004

Binders for paints and varnishes - Alkyd resins - Part 4: Determination of fatty acid content (ISO 6744-4:199…

SIST EN ISO 3696:1998

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