GB/T 2403-2014Cationic dyes—Determination of suitable range of pH of dyeing liquor in acrylic dyeing (English PDF)

1 Scope

This standard specifies the method for determination of cationic dye acrylic dye suitable pH range.

This standard applies to the determination of cationic dyes suitable pH range of dyeing when dyed acrylic.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

General conditions GB/T 2374-2007 Determination of dyes provisions

Determination of GB/T 2399 cationic dye shade and intensity

GB/T 4841.1 standard depth dyeing color card 1/1

Determination of GB/T 6688-2008 relative dye strength and color of the instrumental method

Principle 3

Cationic dye at different pH were boiling dyeing, and then observe the changes in their strength and shade, changes can be assessed according to the intensity and shade

Dyeing pH adaptation range.

4 Reagents and materials

Reagents and materials shall comply with the relevant provisions of GB/T 2374-2007 in Chapter 3.

5. Apparatus

Instruments and equipment shall comply with the relevant provisions of GB/T 2374-2007 in Chapter 4.

Instruments and equipment covered by this standard are as follows.

a) laboratory dyeing machine;

b) pH meter.

6 Test methods