Mass Pigmentation

TABLE OF CONTENTS
  1.0 Introduction
  2.0 Mass pigmentation
      3.1 Definition
            3.2.1.1 Features of a pigment
            3.2.1.2 Aplication of pigments.
      3.2 Mass pigmentation application characteristics.
  3.0 Textile spin finishers and finishes
      4.3 Definiton
      4.4 Classification of finishes
      4.5 Pre-treatment processes
      4.6 Important finishes

1.0 INTRODUCTION
This is a research assignment on mass pigmentation, being a part of Textile raw materials MIT 221.

2.0 MASS PIGMENTATION
2.1 DEFINITION
Mass pigmentation is the incorporation of the pigment in a molten polymer mass during processing into a compound or molten batch or when the end user or converter prepares a finished article e.g. an injection moulding.
Pigments are generally coloured, organic or inorganic solid powder, and usually are insoluble. They are not affected physically or chemically in the substrate in which they are incorporated. Pigments can give a full range of colours. Pigments have a variety of applications that includes plastics, ink, and coating applications.

2.1.1Features of the Pigments
The pigments are versatile coloring agents that come with all round features to give credence to its suitability in a variety of mediums. Some of the striking features are given here:
  * Excellent light and weather fastness
  * Easily dispersible
  * Consistency and uniqueness of shades
  * A good baking stability that makes them suitable for automotive and other industrial paints
  * High tinting strength
  * Good spray fastness when applied in paints
  * Gives good heat stability of around 300° C in the case of Polyolefin’s Plastics
  * Displays good solvent resistance properties

2.1.2 Application of Pigments
Pigments find regular application in the following sectors:
  * Electronics industry
  * Inkjet Inks
  * Paints Industry
  * Plastics
  * Construction Industry
  * Wood working
  * Cement...