Solvent Dyes (Polypon):

Transcription

1 Solvent Dyes (): dyes are brilliant metal complex dyes with good solubility in cello solve and in many other solvents. dyes are particularly suitable for the production of transparent and lightfast shades in general coating and printing inks. Physical Properties: Solution of dyes behave like colloidal systems. The solubility values are only a guide, reached under specific conditions. The solubility & fastness to certain chemicals and food-stuffs is shown in the charts. The heat resistance of a dye depends to a great extent on the nature of the medium and on the length of time it is heated. If the medium itself turns yellow, the lacquer colour will change even through the dye itself is fairly stable: the effect is most noticeable in the case of blue dyes, which may appear markedly greener. The light fastness of a shade depends not only on the dye used but also on the nature of the vehicle. The concentration of the dye also has an influence. Application: dyes are suitable for use in transparent lacquers, flexographic and gravure printing inks and wood stains; and for colouring anodized aluum and plastics such as cellulose nitrate, cellulose acetate and polyester resins. The coloration of nitrocellulose lacquers for producing transparent shades on metalized polyester film & metal foil constitutes an important field of application for dyes. These dyes are by nature suitable for a variety of applications in many others binder systems such as vinyl resins, alkyd melae baking enamels, shellac resins and acrylic resins. We introduce the following Dyes: p.t.o.

2 Solubility (GMS/LTR) Resistance to Chemicals & Foodstuff* Yellow R *Yellow 82 Yellow GL *Yellow TR Golden Yellow Orange RL *Orange TR Orange R *Orange TR

3 Solubility (GMS/LTR) Resistance to Chemicals & Foodstuff* Fire Red G *Red TR Red 2BL TR *Red 132 Red GB TR Red B *Red TR

4 Solubility (GMS/LTR) Resistance to Chemicals & Foodstuff* Pink 5BLG *Red 127 Blue 2GLN *Blue TR TR Black RE *Black 27 Black RL *Black TR TR Green GL TR

5 Solubility (GMS/LTR) Resistance to Chemicals & Foodstuff* Cadbury Violet Brown 2RM Dark Brown 5R TR TR TR *C.I. Solvent Rating 8 represents highest fastness The above solubility chart has been checked *Rating 5 represents highest fastness Ratting 1 represents lowest fastness from particular batch. It may slightly vary from Rating 1 represents lowest fastness batch to batch

6 Note : Indications of suitability of the dyes for particular applications are based on our own tests and knowledge of actual practice. An indication of suitability for particular purpose does not indicate that the dyes will always meet the varied requirements. It must also be borne in d that processing conditions play an important part and it is essential that the user should test the suitability of the dye for his particular process.