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BASIC DYES

MAUVENE, the first to be discovered by Perkin, was a basic dye and most of the dyes which followed, including magenta, malachite green and crystal violet, were of the same type. Basic dyes dye wool and silk from a dye bath containing acid but dye cotton fibres only in the presence of a mordant usually a metallic salt that increases affinity of the fabric for the dye. Basic dyes include the most brilliant of all the synthetic dyes known, but unfortunately they have very poor light and wash fastness.

USE: Basic dyes will dye wool and silk from an acid bath and are used where brightness is of prime consideration. With the introduction of cotton dyes possessing higher fastness properties their use for dyeing cotton has diminished. Basic dyes are used extensively for dyeing cut flowers, dried flowers, also dyeing jute sisal, raffia, coir and wood (toys). With the introduction of acrylic fibre a new range of 'modified' basic dyes were perfected for dyeing of this material.

Dyeing method of Basic Dyes

1. Pre-treatment of goods

Goods→ treatment with tannin (tannin:1-10%, temp.: 90°C time:30min, Liquor ratio: 1:10-20)→ Lower the temperature to ordinary temperature (Keeping the temp. 6-12 hour)→ Dry→ treatment with tartar emetic( tartar emetic:1-3%, temp.: ordinary temp., time:10-20min, Liquor ratio:1:10)→ Rinse.

2. Dyeing procedure

       

PRODUCT LIST

Article No.

Color Sample

Name of Dyes

C.I.NO

Packing

1

Chrysoidine

Basic Orange 2

25kg /Drum

2

Auramine O

Basic Yellow 2

25kg /Drum

3

Bismarck Brown G

Basic Brown 1

25kg /Drum

4

Bismarck Brown G

Basic Brown 1

25kg /Drum

5

Bismarck Black BL

Basic Black 1

25kg /Drum

6

Malachite Green

Basic Green 4

25kg /Drum

7

Basic Violet 2B

Basic Violet 1

25kg /Drum

8

Methyl Violet 5BN

Basic Violet 3

25kg /Drum

9

Basic Rhodamine B

Basic Violet 10

25kg /Drum

10

Basic Magenta

Basic Violet 14

25kg /Drum

11

Basic Brilliant Blue BO

Basic Blue 7

25kg /Drum

12

Basic Lake Blue BB

Basic Blue 9

25kg /Drum

 

 
   
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