Colouring materials in plastics - Determination of colour stability to heat during processing of colouring materials in plastics - Part 1: General introduction

This technical specification outlines a systematic approach for evaluating the color stability of pigments during the processing of plastic coloring materials. It provides general guidance on the methods required to assess how color properties change under specific thermal and mechanical stresses encountered in manufacturing. The document serves as a foundational reference for laboratories and manufacturers seeking to ensure consistent quality in colored polymer products. It details fundamental principles for sample preparation, testing conditions, and measurement techniques necessary to determine the extent of color variation. By establishing a common framework, it facilitates comparisons of results across different facilities and helps identify potential degradation issues in the production line. The text focuses on the procedural aspects of testing, ensuring that the evaluation process is reproducible and reliable. It addresses key parameters that influence color performance, offering a clear structure for conducting experiments. This approach supports the development of more durable and aesthetically consistent plastic goods by providing a standardized methodology for monitoring color retention throughout the processing cycle.