ISO 2115-1996 PDF

Full title and description

Plastics — Polymer dispersions — Determination of white point temperature and minimum film-forming temperature. Specifies a laboratory method to determine the white point temperature and the minimum film‑forming temperature (MFFT) of aqueous polymer dispersions (latexes, emulsions) used in coatings, adhesives and related products.

Abstract

This International Standard (ISO 2115:1996, 3rd edition) defines terms and gives a test procedure using a controlled temperature‑gradient platen and visual inspection to identify the temperature at which an applied dispersion film changes from opaque to transparent (white point) and the lowest temperature at which a continuous film without cracks is formed (MFFT). The standard covers apparatus, sample preparation, test conditions and reporting.

General information

• Status: Published (confirmed on review, remains current)
• Publication date: February 1996 (3rd edition)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 83.040.10 (Latex and raw rubber); 83.080.01 (Plastics in general)
• Edition / version: 3rd edition (1996)
• Number of pages: 5

Scope

ISO 2115:1996 specifies a standardized laboratory procedure for determining the white point temperature and the minimum film‑forming temperature of polymer dispersions. It applies to aqueous dispersions intended to form films (for example paints, varnishes, adhesives and latex products). The procedure uses a temperature‑gradient platen, controlled drying, defined film thickness and visual inspection to locate transition points. The standard is intended for comparative testing, formulation development and quality control.

Key topics and requirements

• Definitions: white point temperature and minimum film‑forming temperature (MFFT) and related terms.
• Apparatus: temperature‑gradient platen (MFFT bar), temperature sensors, controlled airflow and a protective transparent cover for visual inspection.
• Sample preparation: film drawdown, specified film thickness, substrates and conditioning.
• Test procedure: applying the sample across the gradient, drying under controlled airflow, visual observation to identify the opaque→transparent transition and the lowest temperature showing a continuous, crack‑free film.
• Reporting: numerical MFFT and white point values, test conditions (film thickness, airflow, substrate), and any deviations from the method.
• Relationship to formulation properties: interpretation in relation to polymer glass transition and coalescence behavior; use in quality control and product specification.

Typical use and users

Used by laboratory technicians, formulation chemists, quality control and R&D teams in industries producing paints, coatings, adhesives, sealants and other products based on aqueous polymer dispersions. Common applications include formulation optimization, batch release testing, stability assessment and comparison of raw materials (latices/emulsions).

Related standards

Earlier edition: ISO 2115:1976 (superseded). Commonly referenced companion methods and industry norms include ASTM D2354 (Standard Test Method for Minimum Film Formation Temperature) and other ISO standards and test methods from ISO/TC 61 (Plastics) and ISO/TC 35 (Paints and varnishes) that address sampling, film testing and coating characterization.

Keywords

minimum film‑forming temperature, MFFT, white point temperature, polymer dispersion, latex, emulsion, coatings, film formation, test method, ISO 2115

FAQ

Q: What is this standard?

A: ISO 2115:1996 is an International Standard that specifies a laboratory method to determine the white point temperature and the minimum film‑forming temperature (MFFT) of aqueous polymer dispersions.

Q: What does it cover?

A: It covers definitions, required apparatus (temperature‑gradient platen), sample preparation, the step‑by‑step test procedure using a temperature gradient and visual inspection, and reporting of results for MFFT and white point temperature.

Q: Who typically uses it?

A: Formulation chemists, QC laboratories, R&D departments and manufacturers of paints, coatings, adhesives and other products based on polymer dispersions use this standard for product development and quality control.

Q: Is it current or superseded?

A: The 1996 (3rd) edition is the published edition; it has been subject to periodic review and was confirmed as current at review. It replaced the earlier 1976 edition.

Q: Is it part of a series?

A: ISO 2115 belongs to the body of ISO standards on plastics and polymer dispersions and is harmonized with related standards from ISO technical committees (notably ISO/TC 61 and liaison with ISO/TC 35). It is often used alongside other test methods such as ASTM D2354 for MFFT determination.

Q: What are the key keywords?

A: Minimum film‑forming temperature, MFFT, white point temperature, polymer dispersion, latex, emulsion, film formation, coatings, test method.