Plastic colorant types and their characteristics

Plastic as reactants, and processing molding technology fast development and outstanding performance has become the world instead of wood, paper, cotton Novel macromolecular material, steel and other traditional materials. Due to the chemical structure of all kinds of plastic, machining processing methods and temperature is different, the coloring Performance requirements are also different, consumption of varieties of organic pigments for not less than a year, demand for more than ten thousand tons, the demand of inorganic pigments are also more than ten thousand tons. Especially in recent years, with the use of colored plastic products contained toxic requirements of increasingly stringent and the requirement of harmful material residual amount is increasing, plus for plastics Colorants in the manufacturing process of strict requirements of safety and the environment pollution and so on, promoted the development of new colorant for plastics, such as pan, heavy metals such as lead, chromium pigment Substitute for development, with a methyl - nitroaniline namely scarlet base for diazo component made of pigment and grasp the development of the department of benzidine pigment substitutes, polyene The development of hydrocarbon plastic pigments have a deformation, easy in waste water treatment of development of organic pigment, etc.

Plastic with main there are three types of solvent dye colorant or a small number of disperse dyes, pigments and masterbatch.

Several kinds of important plastic colorants:

Used in PVC

Used in PA

Used in polyester

Used in ABS

These thermoplastic plastics have excellent transparency, in order to make color products to keep the original transparency, except in some of these pigment varieties staining can be used more appropriate Selection of solvent dyes and disperse dyes with high solubility, make it in the process of coloring in plastic form stable molecules in solution, high tinting strength.

For plastics colouring agent is to improve the performance of colored plastic products value one of the important factors, with the further development of the plastics industry, the performance of the colorant Will be more and more high, will further promote plastic coloring in all kinds of colorants, especially the study of organic pigment, develop application is wider and more excellent performance A new type of plastic colorants.